Python: Misc/HISTORY

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3.8.6_vs_3.9.0.

1 Python History 2 -------------- 3 4 This file contains the release messages for previous Python releases. 5 As you read on you go back to the dark ages of Python's history. 6 7 8 ====================================================================== 9 10 What's New in Python 3.4.6? 11 =========================== 12 13 Release date: 2017-01-17 14 15 There were no changes between 3.4.6rc1 and 3.4.6 final. 16 17 18 What's New in Python 3.4.6rc1? 19 ============================== 20 21 Release date: 2017-01-02 22 23 Core and Builtins 24 ----------------- 25 26 - Issue #28648: Fixed crash in Py_DecodeLocale() in debug build on Mac OS X 27 when decode astral characters. Patch by Xiang Zhang. 28 29 - Issue #28426: Fixed potential crash in PyUnicode_AsDecodedObject() in debug 30 build. 31 32 Library 33 ------- 34 35 - Issue #28563: Fixed possible DoS and arbitrary code execution when handle 36 plural form selections in the gettext module. The expression parser now 37 supports exact syntax supported by GNU gettext. 38 39 - In the curses module, raise an error if window.getstr() or window.instr() is 40 passed a negative value. 41 42 - Issue #27783: Fix possible usage of uninitialized memory in operator.methodcaller. 43 44 - Issue #27774: Fix possible Py_DECREF on unowned object in _sre. 45 46 - Issue #27760: Fix possible integer overflow in binascii.b2a_qp. 47 48 - Issue #27758: Fix possible integer overflow in the _csv module for large record 49 lengths. 50 51 - Issue #27568: Prevent HTTPoxy attack (CVE-2016-1000110). Ignore the 52 HTTP_PROXY variable when REQUEST_METHOD environment is set, which indicates 53 that the script is in CGI mode. 54 55 - Issue #27759: Fix selectors incorrectly retain invalid file descriptors. 56 Patch by Mark Williams. 57 58 Build 59 ----- 60 61 - Issue #28248: Update Windows build to use OpenSSL 1.0.2j. 62 63 Tests 64 ----- 65 66 - Issue #27369: In test_pyexpat, avoid testing an error message detail that 67 changed in Expat 2.2.0. 68 69 70 What's New in Python 3.4.5? 71 =========================== 72 73 Release date: 2016-06-26 74 75 Tests 76 ----- 77 78 - Issue #26867: Ubuntu's openssl OP_NO_SSLv3 is forced on by default; fix test. 79 80 81 What's New in Python 3.4.5rc1? 82 ============================== 83 84 Release date: 2016-06-11 85 86 Core and Builtins 87 ----------------- 88 89 - Issue #26478: Fix semantic bugs when using binary operators with dictionary 90 views and tuples. 91 92 - Issue #26171: Fix possible integer overflow and heap corruption in 93 zipimporter.get_data(). 94 95 Library 96 ------- 97 98 - Issue #26556: Update expat to 2.1.1, fixes CVE-2015-1283. 99 100 - Fix TLS stripping vulnerability in smptlib, CVE-2016-0772. Reported by Team 101 Oststrom 102 103 - Issue #25939: On Windows open the cert store readonly in ssl.enum_certificates. 104 105 - Issue #26012: Don't traverse into symlinks for ** pattern in 106 pathlib.Path.[r]glob(). 107 108 - Issue #24120: Ignore PermissionError when traversing a tree with 109 pathlib.Path.[r]glob(). Patch by Ulrich Petri. 110 111 - Skip getaddrinfo if host is already resolved. 112 Patch by A. Jesse Jiryu Davis. 113 114 - Add asyncio.timeout() context manager. 115 116 - Issue #26050: Add asyncio.StreamReader.readuntil() method. 117 Patch by Марк Коренберг. 118 119 Tests 120 ----- 121 122 - Issue #25940: Changed test_ssl to use self-signed.pythontest.net. This 123 avoids relying on svn.python.org, which recently changed root certificate. 124 125 126 What's New in Python 3.4.4? 127 =========================== 128 129 Release date: 2015/12/20 130 131 Windows 132 ------- 133 134 - Issue #25844: Corrected =/== typo potentially leading to crash in launcher. 135 136 137 What's New in Python 3.4.4rc1? 138 ============================== 139 140 Release date: 2015/12/06 141 142 Core and Builtins 143 ----------------- 144 145 - Issue #25709: Fixed problem with in-place string concatenation and utf-8 146 cache. 147 148 - Issue #24097: Fixed crash in object.__reduce__() if slot name is freed inside 149 __getattr__. 150 151 - Issue #24731: Fixed crash on converting objects with special methods 152 __bytes__, __trunc__, and __float__ returning instances of subclasses of 153 bytes, int, and float to subclasses of bytes, int, and float correspondingly. 154 155 - Issue #25388: Fixed tokenizer crash when processing undecodable source code 156 with a null byte. 157 158 - Issue #22995: Default implementation of __reduce__ and __reduce_ex__ now 159 rejects builtin types with not defined __new__. 160 161 - Issue #24802: Avoid buffer overreads when int(), float(), compile(), exec() 162 and eval() are passed bytes-like objects. These objects are not 163 necessarily terminated by a null byte, but the functions assumed they were. 164 165 - Issue #24402: Fix input() to prompt to the redirected stdout when 166 sys.stdout.fileno() fails. 167 168 - Issue #24806: Prevent builtin types that are not allowed to be subclassed from 169 being subclassed through multiple inheritance. 170 171 - Issue #24848: Fixed a number of bugs in UTF-7 decoding of misformed data. 172 173 - Issue #25280: Import trace messages emitted in verbose (-v) mode are no 174 longer formatted twice. 175 176 - Issue #25003: os.urandom() doesn't use getentropy() on Solaris because 177 getentropy() is blocking, whereas os.urandom() should not block. getentropy() 178 is supported since Solaris 11.3. 179 180 - Issue #25182: The stdprinter (used as sys.stderr before the io module is 181 imported at startup) now uses the backslashreplace error handler. 182 183 - Issue #24891: Fix a race condition at Python startup if the file descriptor 184 of stdin (0), stdout (1) or stderr (2) is closed while Python is creating 185 sys.stdin, sys.stdout and sys.stderr objects. These attributes are now set 186 to None if the creation of the object failed, instead of raising an OSError 187 exception. Initial patch written by Marco Paolini. 188 189 - Issue #21167: NAN operations are now handled correctly when python is 190 compiled with ICC even if -fp-model strict is not specified. 191 192 - Issue #4395: Better testing and documentation of binary operators. 193 Patch by Martin Panter. 194 195 - Issue #24467: Fixed possible buffer over-read in bytearray. The bytearray 196 object now always allocates place for trailing null byte and it's buffer now 197 is always null-terminated. 198 199 - Issue #24115: Update uses of PyObject_IsTrue(), PyObject_Not(), 200 PyObject_IsInstance(), PyObject_RichCompareBool() and _PyDict_Contains() 201 to check for and handle errors correctly. 202 203 - Issue #24257: Fixed system error in the comparison of faked 204 types.SimpleNamespace. 205 206 - Issue #22939: Fixed integer overflow in iterator object. Patch by 207 Clement Rouault. 208 209 - Issue #23985: Fix a possible buffer overrun when deleting a slice from 210 the front of a bytearray and then appending some other bytes data. 211 212 - Issue #24102: Fixed exception type checking in standard error handlers. 213 214 - Issue #23757: PySequence_Tuple() incorrectly called the concrete list API 215 when the data was a list subclass. 216 217 - Issue #24407: Fix crash when dict is mutated while being updated. 218 219 - Issue #24096: Make warnings.warn_explicit more robust against mutation of the 220 warnings.filters list. 221 222 - Issue #23996: Avoid a crash when a delegated generator raises an 223 unnormalized StopIteration exception. Patch by Stefan Behnel. 224 225 - Issue #24022: Fix tokenizer crash when processing undecodable source code. 226 227 - Issue #23309: Avoid a deadlock at shutdown if a daemon thread is aborted 228 while it is holding a lock to a buffered I/O object, and the main thread 229 tries to use the same I/O object (typically stdout or stderr). A fatal 230 error is emitted instead. 231 232 - Issue #22977: Fixed formatting Windows error messages on Wine. 233 Patch by Martin Panter. 234 235 - Issue #23803: Fixed str.partition() and str.rpartition() when a separator 236 is wider then partitioned string. 237 238 - Issue #23192: Fixed generator lambdas. Patch by Bruno Cauet. 239 240 - Issue #23629: Fix the default __sizeof__ implementation for variable-sized 241 objects. 242 243 - Issue #24044: Fix possible null pointer dereference in list.sort in out of 244 memory conditions. 245 246 - Issue #21354: PyCFunction_New function is exposed by python DLL again. 247 248 Library 249 ------- 250 251 - Issue #24903: Fix regression in number of arguments compileall accepts when 252 '-d' is specified. The check on the number of arguments has been dropped 253 completely as it never worked correctly anyway. 254 255 - Issue #25764: In the subprocess module, preserve any exception caused by 256 fork() failure when preexec_fn is used. 257 258 - Issue #6478: _strptime's regexp cache now is reset after changing timezone 259 with time.tzset(). 260 261 - Issue #25177: Fixed problem with the mean of very small and very large 262 numbers. As a side effect, statistics.mean and statistics.variance should 263 be significantly faster. 264 265 - Issue #25718: Fixed copying object with state with boolean value is false. 266 267 - Issue #10131: Fixed deep copying of minidom documents. Based on patch 268 by Marian Ganisin. 269 270 - Issue #25725: Fixed a reference leak in pickle.loads() when unpickling 271 invalid data including tuple instructions. 272 273 - Issue #25663: In the Readline completer, avoid listing duplicate global 274 names, and search the global namespace before searching builtins. 275 276 - Issue #25688: Fixed file leak in ElementTree.iterparse() raising an error. 277 278 - Issue #23914: Fixed SystemError raised by unpickler on broken pickle data. 279 280 - Issue #25691: Fixed crash on deleting ElementTree.Element attributes. 281 282 - Issue #25624: ZipFile now always writes a ZIP_STORED header for directory 283 entries. Patch by Dingyuan Wang. 284 285 - Issue #25583: Avoid incorrect errors raised by os.makedirs(exist_ok=True) 286 when the OS gives priority to errors such as EACCES over EEXIST. 287 288 - Issue #25593: Change semantics of EventLoop.stop() in asyncio. 289 290 - Issue #6973: When we know a subprocess.Popen process has died, do 291 not allow the send_signal(), terminate(), or kill() methods to do 292 anything as they could potentially signal a different process. 293 294 - Issue #25578: Fix (another) memory leak in SSLSocket.getpeercer(). 295 296 - Issue #25590: In the Readline completer, only call getattr() once per 297 attribute. 298 299 - Issue #25498: Fix a crash when garbage-collecting ctypes objects created 300 by wrapping a memoryview. This was a regression made in 3.4.3. Based 301 on patch by Eryksun. 302 303 - Issue #18010: Fix the pydoc web server's module search function to handle 304 exceptions from importing packages. 305 306 - Issue #25510: fileinput.FileInput.readline() now returns b'' instead of '' 307 at the end if the FileInput was opened with binary mode. 308 Patch by Ryosuke Ito. 309 310 - Issue #25530: Disable the vulnerable SSLv3 protocol by default when creating 311 ssl.SSLContext. 312 313 - Issue #25569: Fix memory leak in SSLSocket.getpeercert(). 314 315 - Issue #21827: Fixed textwrap.dedent() for the case when largest common 316 whitespace is a substring of smallest leading whitespace. 317 Based on patch by Robert Li. 318 319 - Issue #25471: Sockets returned from accept() shouldn't appear to be 320 nonblocking. 321 322 - Issue #25441: asyncio: Raise error from drain() when socket is closed. 323 324 - Issue #25411: Improved Unicode support in SMTPHandler through better use of 325 the email package. Thanks to user simon04 for the patch. 326 327 - Issue #25380: Fixed protocol for the STACK_GLOBAL opcode in 328 pickletools.opcodes. 329 330 - Issue #23972: Updates asyncio datagram create method allowing reuseport 331 and reuseaddr socket options to be set prior to binding the socket. 332 Mirroring the existing asyncio create_server method the reuseaddr option 333 for datagram sockets defaults to True if the O/S is 'posix' (except if the 334 platform is Cygwin). Patch by Chris Laws. 335 336 - Issue #25304: Add asyncio.run_coroutine_threadsafe(). This lets you 337 submit a coroutine to a loop from another thread, returning a 338 concurrent.futures.Future. By Vincent Michel. 339 340 - Issue #25319: When threading.Event is reinitialized, the underlying condition 341 should use a regular lock rather than a recursive lock. 342 343 - Issue #25232: Fix CGIRequestHandler to split the query from the URL at the 344 first question mark (?) rather than the last. Patch from Xiang Zhang. 345 346 - Issue #24657: Prevent CGIRequestHandler from collapsing slashes in the 347 query part of the URL as if it were a path. Patch from Xiang Zhang. 348 349 - Issue #22958: Constructor and update method of weakref.WeakValueDictionary 350 now accept the self and the dict keyword arguments. 351 352 - Issue #22609: Constructor of collections.UserDict now accepts the self keyword 353 argument. 354 355 - Issue #25262. Added support for BINBYTES8 opcode in Python implementation of 356 unpickler. Highest 32 bits of 64-bit size for BINUNICODE8 and BINBYTES8 357 opcodes no longer silently ignored on 32-bit platforms in C implementation. 358 359 - Issue #25034: Fix string.Formatter problem with auto-numbering and 360 nested format_specs. Patch by Anthon van der Neut. 361 362 - Issue #25233: Rewrite the guts of asyncio.Queue and 363 asyncio.Semaphore to be more understandable and correct. 364 365 - Issue #23600: Default implementation of tzinfo.fromutc() was returning 366 wrong results in some cases. 367 368 - Issue #25203: Failed readline.set_completer_delims() no longer left the 369 module in inconsistent state. 370 371 - Prevent overflow in _Unpickler_Read. 372 373 - Issue #25047: The XML encoding declaration written by Element Tree now 374 respects the letter case given by the user. This restores the ability to 375 write encoding names in uppercase like "UTF-8", which worked in Python 2. 376 377 - Issue #19143: platform module now reads Windows version from kernel32.dll to 378 avoid compatibility shims. 379 380 - Issue #23517: Fix rounding in fromtimestamp() and utcfromtimestamp() methods 381 of datetime.datetime: microseconds are now rounded to nearest with ties 382 going to nearest even integer (ROUND_HALF_EVEN), instead of being rounding 383 towards zero (ROUND_DOWN). It's important that these methods use the same 384 rounding mode than datetime.timedelta to keep the property: 385 (datetime(1970,1,1) + timedelta(seconds=t)) == datetime.utcfromtimestamp(t). 386 It also the rounding mode used by round(float) for example. 387 388 - Issue #24684: socket.socket.getaddrinfo() now calls 389 PyUnicode_AsEncodedString() instead of calling the encode() method of the 390 host, to handle correctly custom string with an encode() method which doesn't 391 return a byte string. The encoder of the IDNA codec is now called directly 392 instead of calling the encode() method of the string. 393 394 - Issue #24982: shutil.make_archive() with the "zip" format now adds entries 395 for directories (including empty directories) in ZIP file. 396 397 - Issue #24857: Comparing call_args to a long sequence now correctly returns a 398 boolean result instead of raising an exception. Patch by A Kaptur. 399 400 - Issue #25019: Fixed a crash caused by setting non-string key of expat parser. 401 Based on patch by John Leitch. 402 403 - Issue #24917: time_strftime() buffer over-read. 404 405 - Issue #23144: Make sure that HTMLParser.feed() returns all the data, even 406 when convert_charrefs is True. 407 408 - Issue #16180: Exit pdb if file has syntax error, instead of trapping user 409 in an infinite loop. Patch by Xavier de Gaye. 410 411 - Issue #21112: Fix regression in unittest.expectedFailure on subclasses. 412 Patch from Berker Peksag. 413 414 - Issue #24931: Instances of subclasses of namedtuples have their own __dict__ 415 which breaks the inherited __dict__ property and breaks the _asdict() method. 416 Removed the __dict__ property to prevent the conflict and fixed _asdict(). 417 418 - Issue #24764: cgi.FieldStorage.read_multi() now ignores the Content-Length 419 header in part headers. Patch written by Peter Landry and reviewed by Pierre 420 Quentel. 421 422 - Issue #24774: Fix docstring in http.server.test. Patch from Chiu-Hsiang Hsu. 423 424 - Issue #21159: Improve message in configparser.InterpolationMissingOptionError. 425 Patch from Łukasz Langa. 426 427 - Issue #23888: Handle fractional time in cookie expiry. Patch by ssh. 428 429 - Issue #23004: mock_open() now reads binary data correctly when the type of 430 read_data is bytes. Initial patch by Aaron Hill. 431 432 - Issue #23652: Make it possible to compile the select module against the 433 libc headers from the Linux Standard Base, which do not include some 434 EPOLL macros. Patch by Matt Frank. 435 436 - Issue #22932: Fix timezones in email.utils.formatdate. 437 Patch from Dmitry Shachnev. 438 439 - Issue #23779: imaplib raises TypeError if authenticator tries to abort. 440 Patch from Craig Holmquist. 441 442 - Issue #23319: Fix ctypes.BigEndianStructure, swap correctly bytes. Patch 443 written by Matthieu Gautier. 444 445 - Issue #23254: Document how to close the TCPServer listening socket. 446 Patch from Martin Panter. 447 448 - Issue #19450: Update Windows and OS X installer builds to use SQLite 3.8.11. 449 450 - Issue #23441: rcompleter now prints a tab character instead of displaying 451 possible completions for an empty word. Initial patch by Martin Sekera. 452 453 - Issue #24735: Fix invalid memory access in 454 itertools.combinations_with_replacement(). 455 456 - Issue #17527: Add PATCH to wsgiref.validator. Patch from Luca Sbardella. 457 458 - Issue #24683: Fixed crashes in _json functions called with arguments of 459 inappropriate type. 460 461 - Issue #21697: shutil.copytree() now correctly handles symbolic links that 462 point to directories. Patch by Eduardo Seabra and Thomas Kluyver. 463 464 - Issue #24620: Random.setstate() now validates the value of state last element. 465 466 - Issue #22153: Improve unittest docs. Patch from Martin Panter and evilzero. 467 468 - Issue #24206: Fixed __eq__ and __ne__ methods of inspect classes. 469 470 - Issue #21750: mock_open.read_data can now be read from each instance, as it 471 could in Python 3.3. 472 473 - Issue #23247: Fix a crash in the StreamWriter.reset() of CJK codecs. 474 475 - Issue #18622: unittest.mock.mock_open().reset_mock would recurse infinitely. 476 Patch from Nicola Palumbo and Laurent De Buyst. 477 478 - Issue #24608: chunk.Chunk.read() now always returns bytes, not str. 479 480 - Issue #18684: Fixed reading out of the buffer in the re module. 481 482 - Issue #24259: tarfile now raises a ReadError if an archive is truncated 483 inside a data segment. 484 485 - Issue #24552: Fix use after free in an error case of the _pickle module. 486 487 - Issue #24514: tarfile now tolerates number fields consisting of only 488 whitespace. 489 490 - Issue #19176: Fixed doctype() related bugs in C implementation of ElementTree. 491 A deprecation warning no longer issued by XMLParser subclass with default 492 doctype() method. Direct call of doctype() now issues a warning. Parser's 493 doctype() now is not called if target's doctype() is called. Based on patch 494 by Martin Panter. 495 496 - Issue #20387: Restore semantic round-trip correctness in tokenize/untokenize 497 for tab-indented blocks. 498 499 - Issue #24456: Fixed possible buffer over-read in adpcm2lin() and lin2adpcm() 500 functions of the audioop module. 501 502 - Issue #24336: The contextmanager decorator now works with functions with 503 keyword arguments called "func" and "self". Patch by Martin Panter. 504 505 - Issue #24489: ensure a previously set C errno doesn't disturb cmath.polar(). 506 507 - Issue #5633: Fixed timeit when the statement is a string and the setup is not. 508 509 - Issue #24326: Fixed audioop.ratecv() with non-default weightB argument. 510 Original patch by David Moore. 511 512 - Issue #23840: tokenize.open() now closes the temporary binary file on error 513 to fix a resource warning. 514 515 - Issue #24257: Fixed segmentation fault in sqlite3.Row constructor with faked 516 cursor type. 517 518 - Issue #22107: tempfile.gettempdir() and tempfile.mkdtemp() now try again 519 when a directory with the chosen name already exists on Windows as well as 520 on Unix. tempfile.mkstemp() now fails early if parent directory is not 521 valid (not exists or is a file) on Windows. 522 523 - Issue #6598: Increased time precision and random number range in 524 email.utils.make_msgid() to strengthen the uniqueness of the message ID. 525 526 - Issue #24091: Fixed various crashes in corner cases in C implementation of 527 ElementTree. 528 529 - Issue #21931: msilib.FCICreate() now raises TypeError in the case of a bad 530 argument instead of a ValueError with a bogus FCI error number. 531 Patch by Jeffrey Armstrong. 532 533 - Issue #23796: peek and read1 methods of BufferedReader now raise ValueError 534 if they called on a closed object. Patch by John Hergenroeder. 535 536 - Issue #24521: Fix possible integer overflows in the pickle module. 537 538 - Issue #22931: Allow '[' and ']' in cookie values. 539 540 - Issue #20274: Remove ignored and erroneous "kwargs" parameters from three 541 METH_VARARGS methods on _sqlite.Connection. 542 543 - Issue #24094: Fix possible crash in json.encode with poorly behaved dict 544 subclasses. 545 546 - Asyncio issue 222 / PR 231 (Victor Stinner) -- fix @coroutine 547 functions without __name__. 548 549 - Issue #9246: On POSIX, os.getcwd() now supports paths longer than 1025 bytes. 550 Patch written by William Orr. 551 552 - The keywords attribute of functools.partial is now always a dictionary. 553 554 - Issues #24099, #24100, and #24101: Fix free-after-use bug in heapq's siftup 555 and siftdown functions. 556 557 - Backport collections.deque fixes from Python 3.5. Prevents reentrant badness 558 during deletion by deferring the decref until the container has been restored 559 to a consistent state. 560 561 - Issue #23008: Fixed resolving attributes with boolean value is False in pydoc. 562 563 - Fix asyncio issue 235: LifoQueue and PriorityQueue's put didn't 564 increment unfinished tasks (this bug was introduced in 3.4.3 when 565 JoinableQueue was merged with Queue). 566 567 - Issue #23908: os functions now reject paths with embedded null character 568 on Windows instead of silently truncate them. 569 570 - Issue #23728: binascii.crc_hqx() could return an integer outside of the range 571 0-0xffff for empty data. 572 573 - Issue #23811: Add missing newline to the PyCompileError error message. 574 Patch by Alex Shkop. 575 576 - Issue #17898: Fix exception in gettext.py when parsing certain plural forms. 577 578 - Issue #22982: Improve BOM handling when seeking to multiple positions of 579 a writable text file. 580 581 - Issue #23865: close() methods in multiple modules now are idempotent and more 582 robust at shutdown. If they need to release multiple resources, all are 583 released even if errors occur. 584 585 - Issue #23881: urllib.request.ftpwrapper constructor now closes the socket if 586 the FTP connection failed to fix a ResourceWarning. 587 588 - Issue #23400: Raise same exception on both Python 2 and 3 if sem_open is not 589 available. Patch by Davin Potts. 590 591 - Issue #15133: _tkinter.tkapp.getboolean() now supports Tcl_Obj and always 592 returns bool. tkinter.BooleanVar now validates input values (accepted bool, 593 int, str, and Tcl_Obj). tkinter.BooleanVar.get() now always returns bool. 594 595 - Issue #23338: Fixed formatting ctypes error messages on Cygwin. 596 Patch by Makoto Kato. 597 598 - Issue #16840: Tkinter now supports 64-bit integers added in Tcl 8.4 and 599 arbitrary precision integers added in Tcl 8.5. 600 601 - Issue #23834: Fix socket.sendto(), use the C Py_ssize_t type to store the 602 result of sendto() instead of the C int type. 603 604 - Issue #21526: Tkinter now supports new boolean type in Tcl 8.5. 605 606 - Issue #23838: linecache now clears the cache and returns an empty result on 607 MemoryError. 608 609 - Issue #18473: Fixed 2to3 and 3to2 compatible pickle mappings. Fixed 610 ambigious reverse mappings. Added many new mappings. Import mapping is no 611 longer applied to modules already mapped with full name mapping. 612 613 - Issue #23745: The new email header parser now handles duplicate MIME 614 parameter names without error, similar to how get_param behaves. 615 616 - Issue #23792: Ignore KeyboardInterrupt when the pydoc pager is active. 617 This mimics the behavior of the standard unix pagers, and prevents 618 pipepager from shutting down while the pager itself is still running. 619 620 - Issue #23742: ntpath.expandvars() no longer loses unbalanced single quotes. 621 622 - Issue #21802: The reader in BufferedRWPair now is closed even when closing 623 writer failed in BufferedRWPair.close(). 624 625 - Issue #23671: string.Template now allows to specify the "self" parameter as 626 keyword argument. string.Formatter now allows to specify the "self" and 627 the "format_string" parameters as keyword arguments. 628 629 - Issue #21560: An attempt to write a data of wrong type no longer cause 630 GzipFile corruption. Original patch by Wolfgang Maier. 631 632 - Issue #23647: Increase imaplib's MAXLINE to accommodate modern mailbox sizes. 633 634 - Issue #23539: If body is None, http.client.HTTPConnection.request now sets 635 Content-Length to 0 for PUT, POST, and PATCH headers to avoid 411 errors from 636 some web servers. 637 638 - Issue #22351: The nntplib.NNTP constructor no longer leaves the connection 639 and socket open until the garbage collector cleans them up. Patch by 640 Martin Panter. 641 642 - Issue #23136: _strptime now uniformly handles all days in week 0, including 643 Dec 30 of previous year. Based on patch by Jim Carroll. 644 645 - Issue #23700: Iterator of NamedTemporaryFile now keeps a reference to 646 NamedTemporaryFile instance. Patch by Bohuslav Kabrda. 647 648 - Issue #22903: The fake test case created by unittest.loader when it fails 649 importing a test module is now picklable. 650 651 - Issue #23568: Add rdivmod support to MagicMock() objects. 652 Patch by Håkan Lövdahl. 653 654 - Issue #23138: Fixed parsing cookies with absent keys or values in cookiejar. 655 Patch by Demian Brecht. 656 657 - Issue #23051: multiprocessing.Pool methods imap() and imap_unordered() now 658 handle exceptions raised by an iterator. Patch by Alon Diamant and Davin 659 Potts. 660 661 - Issue #22928: Disabled HTTP header injections in http.client. 662 Original patch by Demian Brecht. 663 664 - Issue #23615: Modules bz2, tarfile and tokenize now can be reloaded with 665 imp.reload(). Patch by Thomas Kluyver. 666 667 - Issue #23476: In the ssl module, enable OpenSSL's X509_V_FLAG_TRUSTED_FIRST 668 flag on certificate stores when it is available. 669 670 - Issue #23576: Avoid stalling in SSL reads when EOF has been reached in the 671 SSL layer but the underlying connection hasn't been closed. 672 673 - Issue #23504: Added an __all__ to the types module. 674 675 - Issue #20204: Added the __module__ attribute to _tkinter classes. 676 677 - Issue #23521: Corrected pure python implementation of timedelta division. 678 679 * Eliminated OverflowError from timedelta * float for some floats; 680 * Corrected rounding in timedelta true division. 681 682 - Issue #21619: Popen objects no longer leave a zombie after exit in the with 683 statement if the pipe was broken. Patch by Martin Panter. 684 685 - Issue #6639: Module-level turtle functions no longer raise TclError after 686 closing the window. 687 688 - Issues #814253, #9179: Warnings now are raised when group references and 689 conditional group references are used in lookbehind assertions in regular 690 expressions. 691 692 - Issue #23215: Multibyte codecs with custom error handlers that ignores errors 693 consumed too much memory and raised SystemError or MemoryError. 694 Original patch by Aleksi Torhamo. 695 696 - Issue #5700: io.FileIO() called flush() after closing the file. 697 flush() was not called in close() if closefd=False. 698 699 - Issue #23374: Fixed pydoc failure with non-ASCII files when stdout encoding 700 differs from file system encoding (e.g. on Mac OS). 701 702 - Issue #23481: Remove RC4 from the SSL module's default cipher list. 703 704 - Issue #21548: Fix pydoc.synopsis() and pydoc.apropos() on modules with empty 705 docstrings. 706 707 - Issue #22885: Fixed arbitrary code execution vulnerability in the dbm.dumb 708 module. Original patch by Claudiu Popa. 709 710 - Issue #23146: Fix mishandling of absolute Windows paths with forward 711 slashes in pathlib. 712 713 - Issue #23421: Fixed compression in tarfile CLI. Patch by wdv4758h. 714 715 - Issue #23367: Fix possible overflows in the unicodedata module. 716 717 - Issue #23361: Fix possible overflow in Windows subprocess creation code. 718 719 - Issue #23801: Fix issue where cgi.FieldStorage did not always ignore the 720 entire preamble to a multipart body. 721 722 - Issue #23310: Fix MagicMock's initializer to work with __methods__, just 723 like configure_mock(). Patch by Kasia Jachim. 724 725 - asyncio: New event loop APIs: set_task_factory() and get_task_factory(). 726 727 - asyncio: async() function is deprecated in favour of ensure_future(). 728 729 - Issue #23898: Fix inspect.classify_class_attrs() to support attributes 730 with overloaded __eq__ and __bool__. Patch by Mike Bayer. 731 732 - Issue #24298: Fix inspect.signature() to correctly unwrap wrappers 733 around bound methods. 734 735 - Issue #23572: Fixed functools.singledispatch on classes with falsy 736 metaclasses. Patch by Ethan Furman. 737 738 IDLE 739 ---- 740 741 - Issue 15348: Stop the debugger engine (normally in a user process) 742 before closing the debugger window (running in the IDLE process). 743 This prevents the RuntimeErrors that were being caught and ignored. 744 745 - Issue #24455: Prevent IDLE from hanging when a) closing the shell while the 746 debugger is active (15347); b) closing the debugger with the [X] button 747 (15348); and c) activating the debugger when already active (24455). 748 The patch by Mark Roseman does this by making two changes. 749 1. Suspend and resume the gui.interaction method with the tcl vwait 750 mechanism intended for this purpose (instead of root.mainloop & .quit). 751 2. In gui.run, allow any existing interaction to terminate first. 752 753 - Change 'The program' to 'Your program' in an IDLE 'kill program?' message 754 to make it clearer that the program referred to is the currently running 755 user program, not IDLE itself. 756 757 - Issue #24750: Improve the appearance of the IDLE editor window status bar. 758 Patch by Mark Roseman. 759 760 - Issue #25313: Change the handling of new built-in text color themes to better 761 address the compatibility problem introduced by the addition of IDLE Dark. 762 Consistently use the revised idleConf.CurrentTheme everywhere in idlelib. 763 764 - Issue #24782: Extension configuration is now a tab in the IDLE Preferences 765 dialog rather than a separate dialog. The former tabs are now a sorted 766 list. Patch by Mark Roseman. 767 768 - Issue #22726: Re-activate the config dialog help button with some content 769 about the other buttons and the new IDLE Dark theme. 770 771 - Issue #24820: IDLE now has an 'IDLE Dark' built-in text color theme. 772 It is more or less IDLE Classic inverted, with a cobalt blue background. 773 Strings, comments, keywords, ... are still green, red, orange, ... . 774 To use it with IDLEs released before November 2015, hit the 775 'Save as New Custom Theme' button and enter a new name, 776 such as 'Custom Dark'. The custom theme will work with any IDLE 777 release, and can be modified. 778 779 - Issue #25224: README.txt is now an idlelib index for IDLE developers and 780 curious users. The previous user content is now in the IDLE doc chapter. 781 'IDLE' now means 'Integrated Development and Learning Environment'. 782 783 - Issue #24820: Users can now set breakpoint colors in 784 Settings -> Custom Highlighting. Original patch by Mark Roseman. 785 786 - Issue #24972: Inactive selection background now matches active selection 787 background, as configured by users, on all systems. Found items are now 788 always highlighted on Windows. Initial patch by Mark Roseman. 789 790 - Issue #24570: Idle: make calltip and completion boxes appear on Macs 791 affected by a tk regression. Initial patch by Mark Roseman. 792 793 - Issue #24988: Idle ScrolledList context menus (used in debugger) 794 now work on Mac Aqua. Patch by Mark Roseman. 795 796 - Issue #24801: Make right-click for context menu work on Mac Aqua. 797 Patch by Mark Roseman. 798 799 - Issue #25173: Associate tkinter messageboxes with a specific widget. 800 For Mac OSX, make them a 'sheet'. Patch by Mark Roseman. 801 802 - Issue #25198: Enhance the initial html viewer now used for Idle Help. 803 * Properly indent fixed-pitch text (patch by Mark Roseman). 804 * Give code snippet a very Sphinx-like light blueish-gray background. 805 * Re-use initial width and height set by users for shell and editor. 806 * When the Table of Contents (TOC) menu is used, put the section header 807 at the top of the screen. 808 809 - Issue #25225: Condense and rewrite Idle doc section on text colors. 810 811 - Issue #21995: Explain some differences between IDLE and console Python. 812 813 - Issue #22820: Explain need for *print* when running file from Idle editor. 814 815 - Issue #25224: Doc: augment Idle feature list and no-subprocess section. 816 817 - Issue #25219: Update doc for Idle command line options. 818 Some were missing and notes were not correct. 819 820 - Issue #24861: Most of idlelib is private and subject to change. 821 Use idleib.idle.* to start Idle. See idlelib.__init__.__doc__. 822 823 - Issue #25199: Idle: add synchronization comments for future maintainers. 824 825 - Issue #16893: Replace help.txt with help.html for Idle doc display. 826 The new idlelib/help.html is rstripped Doc/build/html/library/idle.html. 827 It looks better than help.txt and will better document Idle as released. 828 The tkinter html viewer that works for this file was written by Mark Roseman. 829 The now unused EditorWindow.HelpDialog class and helt.txt file are deprecated. 830 831 - Issue #24199: Deprecate unused idlelib.idlever with possible removal in 3.6. 832 833 - Issue #24790: Remove extraneous code (which also create 2 & 3 conflicts). 834 835 - Issue #23672: Allow Idle to edit and run files with astral chars in name. 836 Patch by Mohd Sanad Zaki Rizvi. 837 838 - Issue 24745: Idle editor default font. Switch from Courier to 839 platform-sensitive TkFixedFont. This should not affect current customized 840 font selections. If there is a problem, edit $HOME/.idlerc/config-main.cfg 841 and remove 'fontxxx' entries from [Editor Window]. Patch by Mark Roseman. 842 843 - Issue #21192: Idle editor. When a file is run, put its name in the restart bar. 844 Do not print false prompts. Original patch by Adnan Umer. 845 846 - Issue #13884: Idle menus. Remove tearoff lines. Patch by Roger Serwy. 847 848 - Issue #23184: remove unused names and imports in idlelib. 849 Initial patch by Al Sweigart. 850 851 Tests 852 ----- 853 854 - Issue #25616: Tests for OrderedDict are extracted from test_collections 855 into separate file test_ordered_dict. 856 857 - Issue #25099: Make test_compileall not fail when an entry on sys.path cannot 858 be written to (commonly seen in administrative installs on Windows). 859 860 - Issue #24751: When running regrtest with the ``-w`` command line option, 861 a test run is no longer marked as a failure if all tests succeed when 862 re-run. 863 864 - Issue #21520: test_zipfile no longer fails if the word 'bad' appears 865 anywhere in the name of the current directory. 866 867 - Issue #23799: Added test.support.start_threads() for running and 868 cleaning up multiple threads. 869 870 - Issue #22390: test.regrtest now emits a warning if temporary files or 871 directories are left after running a test. 872 873 - Issue #23583: Added tests for standard IO streams in IDLE. 874 875 Build 876 ----- 877 878 - Issue #23445: pydebug builds now use "gcc -Og" where possible, to make 879 the resulting executable faster. 880 881 - Issue #24603: Update Windows builds to use OpenSSL1.0.2d 882 and OS X 10.5 installer to use OpenSSL 1.0.2e. 883 884 C API 885 ----- 886 887 - Issue #23998: PyImport_ReInitLock() now checks for lock allocation error 888 889 Documentation 890 ------------- 891 892 - Issue #12067: Rewrite Comparisons section in the Expressions chapter of the 893 language reference. Some of the details of comparing mixed types were 894 incorrect or ambiguous. NotImplemented is only relevant at a lower level 895 than the Expressions chapter. Added details of comparing range() objects, 896 and default behaviour and consistency suggestions for user-defined classes. 897 Patch from Andy Maier. 898 899 - Issue #24952: Clarify the default size argument of stack_size() in 900 the "threading" and "_thread" modules. Patch from Mattip. 901 902 - Issue #24808: Update the types of some PyTypeObject fields. Patch by 903 Joseph Weston. 904 905 - Issue #22812: Fix unittest discovery examples. 906 Patch from Pam McA'Nulty. 907 908 - Issue #24129: Clarify the reference documentation for name resolution. 909 This includes removing the assumption that readers will be familiar with the 910 name resolution scheme Python used prior to the introduction of lexical 911 scoping for function namespaces. Patch by Ivan Levkivskyi. 912 913 - Issue #20769: Improve reload() docs. Patch by Dorian Pula. 914 915 - Issue #23589: Remove duplicate sentence from the FAQ. Patch by Yongzhi Pan. 916 917 - Issue #24729: Correct IO tutorial to match implementation regarding 918 encoding parameter to open function. 919 920 - Issue #24351: Clarify what is meant by "identifier" in the context of 921 string.Template instances. 922 923 - Issue #22155: Add File Handlers subsection with createfilehandler to tkinter 924 doc. Remove obsolete example from FAQ. Patch by Martin Panter. 925 926 - Issue #24029: Document the name binding behavior for submodule imports. 927 928 - Issue #24077: Fix typo in man page for -I command option: -s, not -S. 929 930 Tools/Demos 931 ----------- 932 933 - Issue #25440: Fix output of python-config --extension-suffix. 934 935 - Issue #23330: h2py now supports arbitrary filenames in #include. 936 937 - Issue #24031: make patchcheck now supports git checkouts, too. 938 939 Windows 940 ------- 941 942 - Issue #24306: Sets component ID for launcher to match 3.5 and later 943 to avoid downgrading. 944 945 - Issue #25022: Removed very outdated PC/example_nt/ directory. 946 947 948 What's New in Python 3.4.3? 949 =========================== 950 951 Release date: 2015-02-23 952 953 Core and Builtins 954 ----------------- 955 956 - Issue #22735: Fix many edge cases (including crashes) involving custom mro() 957 implementations. 958 959 - Issue #22896: Avoid using PyObject_AsCharBuffer(), PyObject_AsReadBuffer() 960 and PyObject_AsWriteBuffer(). 961 962 - Issue #21295: Revert some changes (issue #16795) to AST line numbers and 963 column offsets that constituted a regression. 964 965 - Issue #21408: The default __ne__() now returns NotImplemented if __eq__() 966 returned NotImplemented. Original patch by Martin Panter. 967 968 - Issue #23321: Fixed a crash in str.decode() when error handler returned 969 replacement string longer than malformed input data. 970 971 - Issue #23048: Fix jumping out of an infinite while loop in the pdb. 972 973 - Issue #20335: bytes constructor now raises TypeError when encoding or errors 974 is specified with non-string argument. Based on patch by Renaud Blanch. 975 976 - Issue #22335: Fix crash when trying to enlarge a bytearray to 0x7fffffff 977 bytes on a 32-bit platform. 978 979 - Issue #22653: Fix an assertion failure in debug mode when doing a reentrant 980 dict insertion in debug mode. 981 982 - Issue #22643: Fix integer overflow in Unicode case operations (upper, lower, 983 title, swapcase, casefold). 984 985 - Issue #22604: Fix assertion error in debug mode when dividing a complex 986 number by (nan+0j). 987 988 - Issue #22470: Fixed integer overflow issues in "backslashreplace", 989 "xmlcharrefreplace", and "surrogatepass" error handlers. 990 991 - Issue #22520: Fix overflow checking when generating the repr of a unicode 992 object. 993 994 - Issue #22519: Fix overflow checking in PyBytes_Repr. 995 996 - Issue #22518: Fix integer overflow issues in latin-1 encoding. 997 998 - Issue #23165: Perform overflow checks before allocating memory in the 999 _Py_char2wchar function. 1000 1001 Library 1002 ------- 1003 1004 - Issue #23399: pyvenv creates relative symlinks where possible. 1005 1006 - Issue #23099: Closing io.BytesIO with exported buffer is rejected now to 1007 prevent corrupting exported buffer. 1008 1009 - Issue #23363: Fix possible overflow in itertools.permutations. 1010 1011 - Issue #23364: Fix possible overflow in itertools.product. 1012 1013 - Issue #23366: Fixed possible integer overflow in itertools.combinations. 1014 1015 - Issue #23369: Fixed possible integer overflow in 1016 _json.encode_basestring_ascii. 1017 1018 - Issue #23353: Fix the exception handling of generators in 1019 PyEval_EvalFrameEx(). At entry, save or swap the exception state even if 1020 PyEval_EvalFrameEx() is called with throwflag=0. At exit, the exception state 1021 is now always restored or swapped, not only if why is WHY_YIELD or 1022 WHY_RETURN. Patch co-written with Antoine Pitrou. 1023 1024 - Issue #18518: timeit now rejects statements which can't be compiled outside 1025 a function or a loop (e.g. "return" or "break"). 1026 1027 - Issue #23094: Fixed readline with frames in Python implementation of pickle. 1028 1029 - Issue #23268: Fixed bugs in the comparison of ipaddress classes. 1030 1031 - Issue #21408: Removed incorrect implementations of __ne__() which didn't 1032 returned NotImplemented if __eq__() returned NotImplemented. The default 1033 __ne__() now works correctly. 1034 1035 - Issue #19996: :class:`email.feedparser.FeedParser` now handles (malformed) 1036 headers with no key rather than assuming the body has started. 1037 1038 - Issue #23248: Update ssl error codes from latest OpenSSL git master. 1039 1040 - Issue #23098: 64-bit dev_t is now supported in the os module. 1041 1042 - Issue #23250: In the http.cookies module, capitalize "HttpOnly" and "Secure" 1043 as they are written in the standard. 1044 1045 - Issue #23063: In the distutils' check command, fix parsing of reST with code or 1046 code-block directives. 1047 1048 - Issue #23209, #23225: selectors.BaseSelector.close() now clears its internal 1049 reference to the selector mapping to break a reference cycle. Initial patch 1050 written by Martin Richard. 1051 1052 - Issue #21356: Make ssl.RAND_egd() optional to support LibreSSL. The 1053 availability of the function is checked during the compilation. Patch written 1054 by Bernard Spil. 1055 1056 - Issue #20896, #22935: The :func:`ssl.get_server_certificate` function now 1057 uses the :data:`~ssl.PROTOCOL_SSLv23` protocol by default, not 1058 :data:`~ssl.PROTOCOL_SSLv3`, for maximum compatibility and support platforms 1059 where :data:`~ssl.PROTOCOL_SSLv3` support is disabled. 1060 1061 - Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol 1062 version. 1063 1064 - Issue #23132: Mitigate regression in speed and clarity in functools.total_ordering. 1065 1066 - Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(), 1067 instead of reading /dev/urandom, to get pseudo-random bytes. 1068 1069 - Issue #23112: Fix SimpleHTTPServer to correctly carry the query string and 1070 fragment when it redirects to add a trailing slash. 1071 1072 - Issue #23093: In the io, module allow more operations to work on detached 1073 streams. 1074 1075 - Issue #19104: pprint now produces evaluable output for wrapped strings. 1076 1077 - Issue #23071: Added missing names to codecs.__all__. Patch by Martin Panter. 1078 1079 - Issue #15513: Added a __sizeof__ implementation for pickle classes. 1080 1081 - Issue #19858: pickletools.optimize() now aware of the MEMOIZE opcode, can 1082 produce more compact result and no longer produces invalid output if input 1083 data contains MEMOIZE opcodes together with PUT or BINPUT opcodes. 1084 1085 - Issue #22095: Fixed HTTPConnection.set_tunnel with default port. The port 1086 value in the host header was set to "None". Patch by Demian Brecht. 1087 1088 - Issue #23016: A warning no longer produces an AttributeError when the program 1089 is run with pythonw.exe. 1090 1091 - Issue #21775: shutil.copytree(): fix crash when copying to VFAT. An exception 1092 handler assumed that that OSError objects always have a 'winerror' attribute. 1093 That is not the case, so the exception handler itself raised AttributeError 1094 when run on Linux (and, presumably, any other non-Windows OS). 1095 Patch by Greg Ward. 1096 1097 - Issue #1218234: Fix inspect.getsource() to load updated source of 1098 reloaded module. Initial patch by Berker Peksag. 1099 1100 - Issue #22959: In the constructor of http.client.HTTPSConnection, prefer the 1101 context's check_hostname attribute over the *check_hostname* parameter. 1102 1103 - Issue #16043: Add a default limit for the amount of data xmlrpclib.gzip_decode 1104 will return. This resolves CVE-2013-1753. 1105 1106 - Issue #22966: Fix __pycache__ pyc file name clobber when pyc_compile is 1107 asked to compile a source file containing multiple dots in the source file 1108 name. 1109 1110 - Issue #21971: Update turtledemo doc and add module to the index. 1111 1112 - Issue #21032. Fixed socket leak if HTTPConnection.getresponse() fails. 1113 Original patch by Martin Panter. 1114 1115 - Issue #22960: Add a context argument to xmlrpclib.ServerProxy constructor. 1116 1117 - Issue #22915: SAX parser now supports files opened with file descriptor or 1118 bytes path. 1119 1120 - Issue #22609: Constructors and update methods of mapping classes in the 1121 collections module now accept the self keyword argument. 1122 1123 - Issue #22788: Add *context* parameter to logging.handlers.HTTPHandler. 1124 1125 - Issue #22921: Allow SSLContext to take the *hostname* parameter even if 1126 OpenSSL doesn't support SNI. 1127 1128 - Issue #22894: TestCase.subTest() would cause the test suite to be stopped 1129 when in failfast mode, even in the absence of failures. 1130 1131 - Issue #22638: SSLv3 is now disabled throughout the standard library. 1132 It can still be enabled by instantiating a SSLContext manually. 1133 1134 - Issue #22370: Windows detection in pathlib is now more robust. 1135 1136 - Issue #22841: Reject coroutines in asyncio add_signal_handler(). 1137 Patch by Ludovic.Gasc. 1138 1139 - Issue #22849: Fix possible double free in the io.TextIOWrapper constructor. 1140 1141 - Issue #12728: Different Unicode characters having the same uppercase but 1142 different lowercase are now matched in case-insensitive regular expressions. 1143 1144 - Issue #22821: Fixed fcntl() with integer argument on 64-bit big-endian 1145 platforms. 1146 1147 - Issue #22406: Fixed the uu_codec codec incorrectly ported to 3.x. 1148 Based on patch by Martin Panter. 1149 1150 - Issue #17293: uuid.getnode() now determines MAC address on AIX using netstat. 1151 Based on patch by Aivars Kalvāns. 1152 1153 - Issue #22769: Fixed ttk.Treeview.tag_has() when called without arguments. 1154 1155 - Issue #22417: Verify certificates by default in httplib (PEP 476). 1156 1157 - Issue #22775: Fixed unpickling of http.cookies.SimpleCookie with protocol 2 1158 and above. Patch by Tim Graham. 1159 1160 - Issue #22366: urllib.request.urlopen will accept a context object 1161 (SSLContext) as an argument which will then used be for HTTPS connection. 1162 Patch by Alex Gaynor. 1163 1164 - Issue #22776: Brought excluded code into the scope of a try block in 1165 SysLogHandler.emit(). 1166 1167 - Issue #22665: Add missing get_terminal_size and SameFileError to 1168 shutil.__all__. 1169 1170 - Issue #17381: Fixed handling of case-insensitive ranges in regular 1171 expressions. 1172 1173 - Issue #22410: Module level functions in the re module now cache compiled 1174 locale-dependent regular expressions taking into account the locale. 1175 1176 - Issue #22759: Query methods on pathlib.Path() (exists(), is_dir(), etc.) 1177 now return False when the underlying stat call raises NotADirectoryError. 1178 1179 - Issue #8876: distutils now falls back to copying files when hard linking 1180 doesn't work. This allows use with special filesystems such as VirtualBox 1181 shared folders. 1182 1183 - Issue #18853: Fixed ResourceWarning in shlex.__nain__. 1184 1185 - Issue #9351: Defaults set with set_defaults on an argparse subparser 1186 are no longer ignored when also set on the parent parser. 1187 1188 - Issue #21991: Make email.headerregistry's header 'params' attributes 1189 be read-only (MappingProxyType). Previously the dictionary was modifiable 1190 but a new one was created on each access of the attribute. 1191 1192 - Issue #22641: In asyncio, the default SSL context for client connections 1193 is now created using ssl.create_default_context(), for stronger security. 1194 1195 - Issue #22435: Fix a file descriptor leak when SocketServer bind fails. 1196 1197 - Issue #13096: Fixed segfault in CTypes POINTER handling of large 1198 values. 1199 1200 - Issue #11694: Raise ConversionError in xdrlib as documented. Patch 1201 by Filip Gruszczyński and Claudiu Popa. 1202 1203 - Issue #22462: Fix pyexpat's creation of a dummy frame to make it 1204 appear in exception tracebacks. 1205 1206 - Issue #21173: Fix len() on a WeakKeyDictionary when .clear() was called 1207 with an iterator alive. 1208 1209 - Issue #11866: Eliminated race condition in the computation of names 1210 for new threads. 1211 1212 - Issue #21905: Avoid RuntimeError in pickle.whichmodule() when sys.modules 1213 is mutated while iterating. Patch by Olivier Grisel. 1214 1215 - Issue #22219: The zipfile module CLI now adds entries for directories 1216 (including empty directories) in ZIP file. 1217 1218 - Issue #22449: In the ssl.SSLContext.load_default_certs, consult the 1219 environmental variables SSL_CERT_DIR and SSL_CERT_FILE on Windows. 1220 1221 - Issue #20076: Added non derived UTF-8 aliases to locale aliases table. 1222 1223 - Issue #20079: Added locales supported in glibc 2.18 to locale alias table. 1224 1225 - Issue #22396: On 32-bit AIX platform, don't expose os.posix_fadvise() nor 1226 os.posix_fallocate() because their prototypes in system headers are wrong. 1227 1228 - Issue #22517: When a io.BufferedRWPair object is deallocated, clear its 1229 weakrefs. 1230 1231 - Issue #22448: Improve canceled timer handles cleanup to prevent 1232 unbound memory usage. Patch by Joshua Moore-Oliva. 1233 1234 - Issue #23009: Make sure selectors.EpollSelector.select() works when no 1235 FD is registered. 1236 1237 IDLE 1238 ---- 1239 1240 - Issue #20577: Configuration of the max line length for the FormatParagraph 1241 extension has been moved from the General tab of the Idle preferences dialog 1242 to the FormatParagraph tab of the Config Extensions dialog. 1243 Patch by Tal Einat. 1244 1245 - Issue #16893: Update Idle doc chapter to match current Idle and add new 1246 information. 1247 1248 - Issue #3068: Add Idle extension configuration dialog to Options menu. 1249 Changes are written to HOME/.idlerc/config-extensions.cfg. 1250 Original patch by Tal Einat. 1251 1252 - Issue #16233: A module browser (File : Class Browser, Alt+C) requires an 1253 editor window with a filename. When Class Browser is requested otherwise, 1254 from a shell, output window, or 'Untitled' editor, Idle no longer displays 1255 an error box. It now pops up an Open Module box (Alt+M). If a valid name 1256 is entered and a module is opened, a corresponding browser is also opened. 1257 1258 - Issue #4832: Save As to type Python files automatically adds .py to the 1259 name you enter (even if your system does not display it). Some systems 1260 automatically add .txt when type is Text files. 1261 1262 - Issue #21986: Code objects are not normally pickled by the pickle module. 1263 To match this, they are no longer pickled when running under Idle. 1264 1265 - Issue #23180: Rename IDLE "Windows" menu item to "Window". 1266 Patch by Al Sweigart. 1267 1268 Tests 1269 ----- 1270 1271 - Issue #23392: Added tests for marshal C API that works with FILE*. 1272 1273 - Issue #18982: Add tests for CLI of the calendar module. 1274 1275 - Issue #19548: Added some additional checks to test_codecs to ensure that 1276 statements in the updated documentation remain accurate. Patch by Martin 1277 Panter. 1278 1279 - Issue #22838: All test_re tests now work with unittest test discovery. 1280 1281 - Issue #22173: Update lib2to3 tests to use unittest test discovery. 1282 1283 - Issue #16000: Convert test_curses to use unittest. 1284 1285 - Issue #21456: Skip two tests in test_urllib2net.py if _ssl module not 1286 present. Patch by Remi Pointel. 1287 1288 - Issue #22770: Prevent some Tk segfaults on OS X when running gui tests. 1289 1290 - Issue #23211: Workaround test_logging failure on some OS X 10.6 systems. 1291 1292 - Issue #23345: Prevent test_ssl failures with large OpenSSL patch level 1293 values (like 0.9.8zc). 1294 1295 - Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout. 1296 1297 Build 1298 ----- 1299 1300 - Issue #15506: Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure 1301 script. 1302 1303 - Issue #22935: Allow the ssl module to be compiled if openssl doesn't support 1304 SSL 3. 1305 1306 - Issue #16537: Check whether self.extensions is empty in setup.py. Patch by 1307 Jonathan Hosmer. 1308 1309 - Issue #18096: Fix library order returned by python-config. 1310 1311 - Issue #17219: Add library build dir for Python extension cross-builds. 1312 1313 - Issue #17128: Use private version of OpenSSL for 3.4.3 OS X 10.5+ installer. 1314 1315 C API 1316 ----- 1317 1318 - Issue #22079: PyType_Ready() now checks that statically allocated type has 1319 no dynamically allocated bases. 1320 1321 Documentation 1322 ------------- 1323 1324 - Issue #19548: Update the codecs module documentation to better cover the 1325 distinction between text encodings and other codecs, together with other 1326 clarifications. Patch by Martin Panter. 1327 1328 - Issue #22914: Update the Python 2/3 porting HOWTO to describe a more automated 1329 approach. 1330 1331 - Issue #21514: The documentation of the json module now refers to new JSON RFC 1332 7159 instead of obsoleted RFC 4627. 1333 1334 Tools/Demos 1335 ----------- 1336 1337 - Issue #22314: pydoc now works when the LINES environment variable is set. 1338 1339 Windows 1340 ------- 1341 1342 - Issue #17896: The Windows build scripts now expect external library sources 1343 to be in ``PCbuild\..\externals`` rather than ``PCbuild\..\..``. 1344 1345 - Issue #17717: The Windows build scripts now use a copy of NASM pulled from 1346 svn.python.org to build OpenSSL. 1347 1348 - Issue #22644: The bundled version of OpenSSL has been updated to 1.0.1j. 1349 1350 1351 What's New in Python 3.4.2? 1352 =========================== 1353 1354 Release date: 2014-10-06 1355 1356 Library 1357 ------- 1358 1359 - Issue #10510: distutils register and upload methods now use HTML standards 1360 compliant CRLF line endings. 1361 1362 - Issue #9850: Fixed macpath.join() for empty first component. Patch by 1363 Oleg Oshmyan. 1364 1365 - Issue #22427: TemporaryDirectory no longer attempts to clean up twice when 1366 used in the with statement in generator. 1367 1368 - Issue #20912: Now directories added to ZIP file have correct Unix and MS-DOS 1369 directory attributes. 1370 1371 - Issue #21866: ZipFile.close() no longer writes ZIP64 central directory 1372 records if allowZip64 is false. 1373 1374 - Issue #22415: Fixed debugging output of the GROUPREF_EXISTS opcode in the re 1375 module. Removed trailing spaces in debugging output. 1376 1377 - Issue #22423: Unhandled exception in thread no longer causes unhandled 1378 AttributeError when sys.stderr is None. 1379 1380 - Issue #21332: Ensure that ``bufsize=1`` in subprocess.Popen() selects 1381 line buffering, rather than block buffering. Patch by Akira Li. 1382 1383 1384 What's New in Python 3.4.2rc1? 1385 ============================== 1386 1387 Release date: 2014-09-22 1388 1389 Core and Builtins 1390 ----------------- 1391 1392 - Issue #22258: Fix the internal function set_inheritable() on Illumos. 1393 This platform exposes the function ``ioctl(FIOCLEX)``, but calling it fails 1394 with errno is ENOTTY: "Inappropriate ioctl for device". set_inheritable() 1395 now falls back to the slower ``fcntl()`` (``F_GETFD`` and then ``F_SETFD``). 1396 1397 - Issue #21669: With the aid of heuristics in SyntaxError.__init__, the 1398 parser now attempts to generate more meaningful (or at least more search 1399 engine friendly) error messages when "exec" and "print" are used as 1400 statements. 1401 1402 - Issue #21642: In the conditional if-else expression, allow an integer written 1403 with no space between itself and the ``else`` keyword (e.g. ``True if 42else 1404 False``) to be valid syntax. 1405 1406 - Issue #21523: Fix over-pessimistic computation of the stack effect of 1407 some opcodes in the compiler. This also fixes a quadratic compilation 1408 time issue noticeable when compiling code with a large number of "and" 1409 and "or" operators. 1410 1411 Library 1412 ------- 1413 1414 - Issue #21091: Fix API bug: email.message.EmailMessage.is_attachment is now 1415 a method. Since EmailMessage is provisional, we can change the API in a 1416 maintenance release, but we use a trick to remain backward compatible with 1417 3.4.0/1. 1418 1419 - Issue #21079: Fix email.message.EmailMessage.is_attachment to return the 1420 correct result when the header has parameters as well as a value. 1421 1422 - Issue #22247: Add NNTPError to nntplib.__all__. 1423 1424 - Issue #4180: The warnings registries are now reset when the filters 1425 are modified. 1426 1427 - Issue #22419: Limit the length of incoming HTTP request in wsgiref server to 1428 65536 bytes and send a 414 error code for higher lengths. Patch contributed 1429 by Devin Cook. 1430 1431 - Lax cookie parsing in http.cookies could be a security issue when combined 1432 with non-standard cookie handling in some Web browsers. Reported by 1433 Sergey Bobrov. 1434 1435 - Issue #22384: An exception in Tkinter callback no longer crashes the program 1436 when it is run with pythonw.exe. 1437 1438 - Issue #22168: Prevent turtle AttributeError with non-default Canvas on OS X. 1439 1440 - Issue #21147: sqlite3 now raises an exception if the request contains a null 1441 character instead of truncate it. Based on patch by Victor Stinner. 1442 1443 - Issue #21951: Fixed a crash in Tkinter on AIX when called Tcl command with 1444 empty string or tuple argument. 1445 1446 - Issue #21951: Tkinter now most likely raises MemoryError instead of crash 1447 if the memory allocation fails. 1448 1449 - Issue #22338: Fix a crash in the json module on memory allocation failure. 1450 1451 - Issue #22226: First letter no longer is stripped from the "status" key in 1452 the result of Treeview.heading(). 1453 1454 - Issue #19524: Fixed resource leak in the HTTP connection when an invalid 1455 response is received. Patch by Martin Panter. 1456 1457 - Issue #22051: turtledemo no longer reloads examples to re-run them. 1458 Initialization of variables and gui setup should be done in main(), 1459 which is called each time a demo is run, but not on import. 1460 1461 - Issue #21933: Turtledemo users can change the code font size with a menu 1462 selection or control(command) '-' or '+' or control-mousewheel. 1463 Original patch by Lita Cho. 1464 1465 - Issue #21597: The separator between the turtledemo text pane and the drawing 1466 canvas can now be grabbed and dragged with a mouse. The code text pane can 1467 be widened to easily view or copy the full width of the text. The canvas 1468 can be widened on small screens. Original patches by Jan Kanis and Lita Cho. 1469 1470 - Issue #18132: Turtledemo buttons no longer disappear when the window is 1471 shrunk. Original patches by Jan Kanis and Lita Cho. 1472 1473 - Issue #22216: smtplib now resets its state more completely after a quit. The 1474 most obvious consequence of the previous behavior was a STARTTLS failure 1475 during a connect/starttls/quit/connect/starttls sequence. 1476 1477 - Issue #22185: Fix an occasional RuntimeError in threading.Condition.wait() 1478 caused by mutation of the waiters queue without holding the lock. Patch 1479 by Doug Zongker. 1480 1481 - Issue #22182: Use e.args to unpack exceptions correctly in 1482 distutils.file_util.move_file. Patch by Claudiu Popa. 1483 1484 - The webbrowser module now uses subprocess's start_new_session=True rather 1485 than a potentially risky preexec_fn=os.setsid call. 1486 1487 - Issue #22236: Fixed Tkinter images copying operations in NoDefaultRoot mode. 1488 1489 - Issue #22191: Fix warnings.__all__. 1490 1491 - Issue #15696: Add a __sizeof__ implementation for mmap objects on Windows. 1492 1493 - Issue #22068: Avoided reference loops with Variables and Fonts in Tkinter. 1494 1495 - Issue #22165: SimpleHTTPRequestHandler now supports undecodable file names. 1496 1497 - Issue #8797: Raise HTTPError on failed Basic Authentication immediately. 1498 Initial patch by Sam Bull. 1499 1500 - Issue #20729: Restored the use of lazy iterkeys()/itervalues()/iteritems() 1501 in the mailbox module. 1502 1503 - Issue #21448: Changed FeedParser feed() to avoid O(N**2) behavior when 1504 parsing long line. Original patch by Raymond Hettinger. 1505 1506 - Issue #22184: The functools LRU Cache decorator factory now gives an earlier 1507 and clearer error message when the user forgets the required parameters. 1508 1509 - Issue #17923: glob() patterns ending with a slash no longer match non-dirs on 1510 AIX. Based on patch by Delhallt. 1511 1512 - Issue #21121: Don't force 3rd party C extensions to be built with 1513 -Werror=declaration-after-statement. 1514 1515 - Issue #21975: Fixed crash when using uninitialized sqlite3.Row (in particular 1516 when unpickling pickled sqlite3.Row). sqlite3.Row is now initialized in the 1517 __new__() method. 1518 1519 - Issue #21580: Now Tkinter correctly handles bytes arguments passed to Tk. 1520 In particular this allows to initialize images from binary data. 1521 1522 - Issue #17172: Make turtledemo start as active on OS X even when run with 1523 subprocess. Patch by Lita Cho. 1524 1525 - Issue #21704: Fix build error for _multiprocessing when semaphores 1526 are not available. Patch by Arfrever Frehtes Taifersar Arahesis. 1527 1528 - Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError 1529 on closed socket. repr(socket.socket) already works fine. 1530 1531 - Issue #16133: The asynchat.async_chat.handle_read() method now ignores 1532 BlockingIOError exceptions. 1533 1534 - Issue #22044: Fixed premature DECREF in call_tzinfo_method. 1535 Patch by Tom Flanagan. 1536 1537 - Issue #19884: readline: Disable the meta modifier key if stdout is not 1538 a terminal to not write the ANSI sequence "\033[1034h" into stdout. This 1539 sequence is used on some terminal (ex: TERM=xterm-256color") to enable 1540 support of 8 bit characters. 1541 1542 - Issue #21888: plistlib's load() and loads() now work if the fmt parameter is 1543 specified. 1544 1545 - Issue #21044: tarfile.open() now handles fileobj with an integer 'name' 1546 attribute. Based on patch by Antoine Pietri. 1547 1548 - Issue #21867: Prevent turtle crash due to invalid undo buffer size. 1549 1550 - Issue #19076: Don't pass the redundant 'file' argument to self.error(). 1551 1552 - Issue #21942: Fixed source file viewing in pydoc's server mode on Windows. 1553 1554 - Issue #11259: asynchat.async_chat().set_terminator() now raises a ValueError 1555 if the number of received bytes is negative. 1556 1557 - Issue #12523: asynchat.async_chat.push() now raises a TypeError if it doesn't 1558 get a bytes string 1559 1560 - Issue #21707: Add missing kwonlyargcount argument to 1561 ModuleFinder.replace_paths_in_code(). 1562 1563 - Issue #20639: calling Path.with_suffix('') allows removing the suffix 1564 again. Patch by July Tikhonov. 1565 1566 - Issue #21714: Disallow the construction of invalid paths using 1567 Path.with_name(). Original patch by Antony Lee. 1568 1569 - Issue #21897: Fix a crash with the f_locals attribute with closure 1570 variables when frame.clear() has been called. 1571 1572 - Issue #21151: Fixed a segfault in the winreg module when ``None`` is passed 1573 as a ``REG_BINARY`` value to SetValueEx. Patch by John Ehresman. 1574 1575 - Issue #21090: io.FileIO.readall() does not ignore I/O errors anymore. Before, 1576 it ignored I/O errors if at least the first C call read() succeed. 1577 1578 - Issue #21781: ssl.RAND_add() now supports strings longer than 2 GB. 1579 1580 - Issue #11453: asyncore: emit a ResourceWarning when an unclosed file_wrapper 1581 object is destroyed. The destructor now closes the file if needed. The 1582 close() method can now be called twice: the second call does nothing. 1583 1584 - Issue #21858: Better handling of Python exceptions in the sqlite3 module. 1585 1586 - Issue #21476: Make sure the email.parser.BytesParser TextIOWrapper is 1587 discarded after parsing, so the input file isn't unexpectedly closed. 1588 1589 - Issue #21729: Used the "with" statement in the dbm.dumb module to ensure 1590 files closing. Patch by Claudiu Popa. 1591 1592 - Issue #21491: socketserver: Fix a race condition in child processes reaping. 1593 1594 - Issue #21832: Require named tuple inputs to be exact strings. 1595 1596 - Issue #19145: The times argument for itertools.repeat now handles 1597 negative values the same way for keyword arguments as it does for 1598 positional arguments. 1599 1600 - Issue #21812: turtle.shapetransform did not transform the turtle on the 1601 first call. (Issue identified and fixed by Lita Cho.) 1602 1603 - Issue #21635: The difflib SequenceMatcher.get_matching_blocks() method 1604 cache didn't match the actual result. The former was a list of tuples 1605 and the latter was a list of named tuples. 1606 1607 - Issue #21722: The distutils "upload" command now exits with a non-zero 1608 return code when uploading fails. Patch by Martin Dengler. 1609 1610 - Issue #21723: asyncio.Queue: support any type of number (ex: float) for the 1611 maximum size. Patch written by Vajrasky Kok. 1612 1613 - Issue #21326: Add a new is_closed() method to asyncio.BaseEventLoop. 1614 run_forever() and run_until_complete() methods of asyncio.BaseEventLoop now 1615 raise an exception if the event loop was closed. 1616 1617 - Issue #21774: Fixed NameError for an incorrect variable reference in the 1618 XML Minidom code for creating processing instructions. 1619 (Found and fixed by Claudiu Popa.) 1620 1621 - Issue #21766: Prevent a security hole in CGIHTTPServer by URL unquoting paths 1622 before checking for a CGI script at that path. 1623 1624 - Issue #21310: Fixed possible resource leak in failed open(). 1625 1626 - Issue #21677: Fixed chaining nonnormalized exceptions in io close() methods. 1627 1628 - Issue #11709: Fix the pydoc.help function to not fail when sys.stdin is not a 1629 valid file. 1630 1631 - Issue #13223: Fix pydoc.writedoc so that the HTML documentation for methods 1632 that use 'self' in the example code is generated correctly. 1633 1634 - Issue #21463: In urllib.request, fix pruning of the FTP cache. 1635 1636 - Issue #21618: The subprocess module could fail to close open fds that were 1637 inherited by the calling process and already higher than POSIX resource 1638 limits would otherwise allow. On systems with a functioning /proc/self/fd 1639 or /dev/fd interface the max is now ignored and all fds are closed. 1640 1641 - Issue #21552: Fixed possible integer overflow of too long string lengths in 1642 the tkinter module on 64-bit platforms. 1643 1644 - Issue #14315: The zipfile module now ignores extra fields in the central 1645 directory that are too short to be parsed instead of letting a struct.unpack 1646 error bubble up as this "bad data" appears in many real world zip files in 1647 the wild and is ignored by other zip tools. 1648 1649 - Issue #21402: tkinter.ttk now works when default root window is not set. 1650 1651 - Issue #10203: sqlite3.Row now truly supports sequence protocol. In particular 1652 it supports reverse() and negative indices. Original patch by Claudiu Popa. 1653 1654 - Issue #18807: If copying (no symlinks) specified for a venv, then the python 1655 interpreter aliases (python, python3) are now created by copying rather than 1656 symlinking. 1657 1658 - Issue #14710: pkgutil.get_loader() no longer raises an exception when None is 1659 found in sys.modules. 1660 1661 - Issue #14710: pkgutil.find_loader() no longer raises an exception when a 1662 module doesn't exist. 1663 1664 - Issue #21481: Argparse equality and inequality tests now return 1665 NotImplemented when comparing to an unknown type. 1666 1667 - Issue #8743: Fix interoperability between set objects and the 1668 collections.Set() abstract base class. 1669 1670 - Issue #13355: random.triangular() no longer fails with a ZeroDivisionError 1671 when low equals high. 1672 1673 - Issue #21538: The plistlib module now supports loading of binary plist files 1674 when reference or offset size is not a power of two. 1675 1676 - Issue #21801: Validate that __signature__ is None or an instance of Signature. 1677 1678 - Issue #21923: Prevent AttributeError in distutils.sysconfig.customize_compiler 1679 due to possible uninitialized _config_vars. 1680 1681 - Issue #21323: Fix http.server to again handle scripts in CGI subdirectories, 1682 broken by the fix for security issue #19435. Patch by Zach Byrne. 1683 1684 Extension Modules 1685 ----------------- 1686 1687 - Issue #22176: Update the ctypes module's libffi to v3.1. This release 1688 adds support for the Linux AArch64 and POWERPC ELF ABIv2 little endian 1689 architectures. 1690 1691 Build 1692 ----- 1693 1694 - Issue #15661: python.org OS X installers are now distributed as signed 1695 installer packages compatible with the Gatekeeper security feature. 1696 1697 - Issue #21958: Define HAVE_ROUND when building with Visual Studio 2013 and 1698 above. Patch by Zachary Turner. 1699 1700 - Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/ 1701 now display special message when and only when there are failures. 1702 1703 - Issue #17095: Fix Modules/Setup *shared* support. 1704 1705 - Issue #21811: Anticipated fixes to support OS X versions > 10.9. 1706 1707 - Issue #21166: Prevent possible segfaults and other random failures of 1708 python --generate-posix-vars in pybuilddir.txt build target. 1709 1710 IDLE 1711 ---- 1712 1713 - Issue #17390: Adjust Editor window title; remove 'Python', 1714 move version to end. 1715 1716 - Issue #14105: Idle debugger breakpoints no longer disappear 1717 when inseting or deleting lines. 1718 1719 - Issue #17172: Turtledemo can now be run from Idle. 1720 Currently, the entry is on the Help menu, but it may move to Run. 1721 Patch by Ramchandra Apt and Lita Cho. 1722 1723 - Issue #21765: Add support for non-ascii identifiers to HyperParser. 1724 1725 - Issue #21940: Add unittest for WidgetRedirector. Initial patch by Saimadhav 1726 Heblikar. 1727 1728 - Issue #18592: Add unittest for SearchDialogBase. Patch by Phil Webster. 1729 1730 - Issue #21694: Add unittest for ParenMatch. Patch by Saimadhav Heblikar. 1731 1732 - Issue #21686: add unittest for HyperParser. Original patch by Saimadhav 1733 Heblikar. 1734 1735 - Issue #12387: Add missing upper(lower)case versions of default Windows key 1736 bindings for Idle so Caps Lock does not disable them. Patch by Roger Serwy. 1737 1738 - Issue #21695: Closing a Find-in-files output window while the search is 1739 still in progress no longer closes Idle. 1740 1741 - Issue #18910: Add unittest for textView. Patch by Phil Webster. 1742 1743 - Issue #18292: Add unittest for AutoExpand. Patch by Saihadhav Heblikar. 1744 1745 - Issue #18409: Add unittest for AutoComplete. Patch by Phil Webster. 1746 1747 Tests 1748 ----- 1749 1750 - Issue #22166: With the assistance of a new internal _codecs._forget_codec 1751 helping function, test_codecs now clears the encoding caches to avoid the 1752 appearance of a reference leak 1753 1754 - Issue #22236: Tkinter tests now don't reuse default root window. New root 1755 window is created for every test class. 1756 1757 - Issue #20746: Fix test_pdb to run in refleak mode (-R). Patch by Xavier 1758 de Gaye. 1759 1760 - Issue #22060: test_ctypes has been somewhat cleaned up and simplified; it 1761 now uses unittest test discovery to find its tests. 1762 1763 - Issue #22104: regrtest.py no longer holds a reference to the suite of tests 1764 loaded from test modules that don't define test_main(). 1765 1766 - Issue #22002: Added ``load_package_tests`` function to test.support and used 1767 it to implement/augment test discovery in test_asyncio, test_email, 1768 test_importlib, test_json, and test_tools. 1769 1770 - Issue #21976: Fix test_ssl to accept LibreSSL version strings. Thanks 1771 to William Orr. 1772 1773 - Issue #21918: Converted test_tools from a module to a package containing 1774 separate test files for each tested script. 1775 1776 - Issue #20155: Changed HTTP method names in failing tests in test_httpservers 1777 so that packet filtering software (specifically Windows Base Filtering Engine) 1778 does not interfere with the transaction semantics expected by the tests. 1779 1780 - Issue #19493: Refactored the ctypes test package to skip tests explicitly 1781 rather than silently. 1782 1783 - Issue #18492: All resources are now allowed when tests are not run by 1784 regrtest.py. 1785 1786 - Issue #21634: Fix pystone micro-benchmark: use floor division instead of true 1787 division to benchmark integers instead of floating point numbers. Set pystone 1788 version to 1.2. Patch written by Lennart Regebro. 1789 1790 - Issue #21605: Added tests for Tkinter images. 1791 1792 - Issue #21493: Added test for ntpath.expanduser(). Original patch by 1793 Claudiu Popa. 1794 1795 - Issue #19925: Added tests for the spwd module. Original patch by Vajrasky Kok. 1796 1797 - Issue #21522: Added Tkinter tests for Listbox.itemconfigure(), 1798 PanedWindow.paneconfigure(), and Menu.entryconfigure(). 1799 1800 Documentation 1801 ------------- 1802 1803 - Issue #21777: The binary sequence methods on bytes and bytearray are now 1804 documented explicitly, rather than assuming users will be able to derive 1805 the expected behaviour from the behaviour of the corresponding str methods. 1806 1807 Windows 1808 ------- 1809 1810 - Issue #21671, #22160, CVE-2014-0224: The bundled version of OpenSSL has been 1811 updated to 1.0.1i. 1812 1813 - Issue #10747: Use versioned labels in the Windows start menu. 1814 Patch by Olive Kilburn. 1815 1816 Tools/Demos 1817 ----------- 1818 1819 - Issue #22201: Command-line interface of the zipfile module now correctly 1820 extracts ZIP files with directory entries. Patch by Ryan Wilson. 1821 1822 - Issue #21906: Make Tools/scripts/md5sum.py work in Python 3. 1823 Patch by Zachary Ware. 1824 1825 - Issue #21629: Fix Argument Clinic's "--converters" feature. 1826 1827 1828 What's New in Python 3.4.1? 1829 =========================== 1830 1831 Release date: 2014-05-18 1832 1833 Core and Builtins 1834 ----------------- 1835 1836 - Issue #21418: Fix a crash in the builtin function super() when called without 1837 argument and without current frame (ex: embedded Python). 1838 1839 - Issue #21425: Fix flushing of standard streams in the interactive 1840 interpreter. 1841 1842 - Issue #21435: In rare cases, when running finalizers on objects in cyclic 1843 trash a bad pointer dereference could occur due to a subtle flaw in 1844 internal iteration logic. 1845 1846 Library 1847 ------- 1848 1849 - Issue #10744: Fix PEP 3118 format strings on ctypes objects with a nontrivial 1850 shape. 1851 1852 - Issue #20998: Fixed re.fullmatch() of repeated single character pattern 1853 with ignore case. Original patch by Matthew Barnett. 1854 1855 - Issue #21075: fileinput.FileInput now reads bytes from standard stream if 1856 binary mode is specified. Patch by Sam Kimbrel. 1857 1858 - Issue #21396: Fix TextIOWrapper(..., write_through=True) to not force a 1859 flush() on the underlying binary stream. Patch by akira. 1860 1861 - Issue #21470: Do a better job seeding the random number generator by 1862 using enough bytes to span the full state space of the Mersenne Twister. 1863 1864 - Issue #21398: Fix an unicode error in the pydoc pager when the documentation 1865 contains characters not encodable to the stdout encoding. 1866 1867 Tests 1868 ----- 1869 1870 - Issue #17756: Fix test_code test when run from the installed location. 1871 1872 - Issue #17752: Fix distutils tests when run from the installed location. 1873 1874 IDLE 1875 ---- 1876 1877 - Issue #18104: Add idlelib/idle_test/htest.py with a few sample tests to begin 1878 consolidating and improving human-validated tests of Idle. Change other files 1879 as needed to work with htest. Running the module as __main__ runs all tests. 1880 1881 1882 What's New in Python 3.4.1rc1? 1883 ============================== 1884 1885 Release date: 2014-05-05 1886 1887 Core and Builtins 1888 ----------------- 1889 1890 - Issue #21274: Define PATH_MAX for GNU/Hurd in Python/pythonrun.c. 1891 1892 - Issue #21209: Fix sending tuples to custom generator objects with the yield 1893 from syntax. 1894 1895 - Issue #21134: Fix segfault when str is called on an uninitialized 1896 UnicodeEncodeError, UnicodeDecodeError, or UnicodeTranslateError object. 1897 1898 - Issue #19537: Fix PyUnicode_DATA() alignment under m68k. Patch by 1899 Andreas Schwab. 1900 1901 - Issue #20929: Add a type cast to avoid shifting a negative number. 1902 1903 - Issue #20731: Properly position in source code files even if they 1904 are opened in text mode. Patch by Serhiy Storchaka. 1905 1906 - Issue #20637: Key-sharing now also works for instance dictionaries of 1907 subclasses. Patch by Peter Ingebretson. 1908 1909 - Issue #12546: Allow ``\x00`` to be used as a fill character when using str, int, 1910 float, and complex __format__ methods. 1911 1912 - Issue #13598: Modify string.Formatter to support auto-numbering of 1913 replacement fields. It now matches the behavior of str.format() in 1914 this regard. Patches by Phil Elson and Ramchandra Apte. 1915 1916 Library 1917 ------- 1918 1919 - Issue #21088: Bugfix for curses.window.addch() regression in 3.4.0. 1920 In porting to Argument Clinic, the first two arguments were reversed. 1921 1922 - Issue #21469: Reduced the risk of false positives in robotparser by 1923 checking to make sure that robots.txt has been read or does not exist 1924 prior to returning True in can_fetch(). 1925 1926 - Issue #21321: itertools.islice() now releases the reference to the source 1927 iterator when the slice is exhausted. Patch by Anton Afanasyev. 1928 1929 - Issue #9815: assertRaises now tries to clear references to local variables 1930 in the exception's traceback. 1931 1932 - Issue #13204: Calling sys.flags.__new__ would crash the interpreter, 1933 now it raises a TypeError. 1934 1935 - Issue #19385: Make operations on a closed dbm.dumb database always raise the 1936 same exception. 1937 1938 - Issue #21207: Detect when the os.urandom cached fd has been closed or 1939 replaced, and open it anew. 1940 1941 - Issue #21291: subprocess's Popen.wait() is now thread safe so that 1942 multiple threads may be calling wait() or poll() on a Popen instance 1943 at the same time without losing the Popen.returncode value. 1944 1945 - Issue #21127: Path objects can now be instantiated from str subclass 1946 instances (such as ``numpy.str_``). 1947 1948 - Issue #15002: urllib.response object to use _TemporaryFileWrapper (and 1949 _TemporaryFileCloser) facility. Provides a better way to handle file 1950 descriptor close. Patch contributed by Christian Theune. 1951 1952 - Issue #12220: mindom now raises a custom ValueError indicating it doesn't 1953 support spaces in URIs instead of letting a 'split' ValueError bubble up. 1954 1955 - Issue #21239: patch.stopall() didn't work deterministically when the same 1956 name was patched more than once. 1957 1958 - Issue #21222: Passing name keyword argument to mock.create_autospec now 1959 works. 1960 1961 - Issue #21197: Add lib64 -> lib symlink in venvs on 64-bit non-OS X POSIX. 1962 1963 - Issue #17498: Some SMTP servers disconnect after certain errors, violating 1964 strict RFC conformance. Instead of losing the error code when we issue the 1965 subsequent RSET, smtplib now returns the error code and defers raising the 1966 SMTPServerDisconnected error until the next command is issued. 1967 1968 - Issue #17826: setting an iterable side_effect on a mock function created by 1969 create_autospec now works. Patch by Kushal Das. 1970 1971 - Issue #7776: Fix ``Host:`` header and reconnection when using 1972 http.client.HTTPConnection.set_tunnel(). Patch by Nikolaus Rath. 1973 1974 - Issue #20968: unittest.mock.MagicMock now supports division. 1975 Patch by Johannes Baiter. 1976 1977 - Issue #21529 (CVE-2014-4616): Fix arbitrary memory access in 1978 JSONDecoder.raw_decode with a negative second parameter. Bug reported by Guido 1979 Vranken. 1980 1981 - Issue #21169: getpass now handles non-ascii characters that the 1982 input stream encoding cannot encode by re-encoding using the 1983 replace error handler. 1984 1985 - Issue #21171: Fixed undocumented filter API of the rot13 codec. 1986 Patch by Berker Peksag. 1987 1988 - Issue #21172: isinstance check relaxed from dict to collections.Mapping. 1989 1990 - Issue #21155: asyncio.EventLoop.create_unix_server() now raises a ValueError 1991 if path and sock are specified at the same time. 1992 1993 - Issue #21149: Improved thread-safety in logging cleanup during interpreter 1994 shutdown. Thanks to Devin Jeanpierre for the patch. 1995 1996 - Issue #20145: `assertRaisesRegex` and `assertWarnsRegex` now raise a 1997 TypeError if the second argument is not a string or compiled regex. 1998 1999 - Issue #21058: Fix a leak of file descriptor in 2000 :func:`tempfile.NamedTemporaryFile`, close the file descriptor if 2001 :func:`io.open` fails 2002 2003 - Issue #21200: Return None from pkgutil.get_loader() when __spec__ is missing. 2004 2005 - Issue #21013: Enhance ssl.create_default_context() when used for server side 2006 sockets to provide better security by default. 2007 2008 - Issue #20633: Replace relative import by absolute import. 2009 2010 - Issue #20980: Stop wrapping exception when using ThreadPool. 2011 2012 - Issue #21082: In os.makedirs, do not set the process-wide umask. Note this 2013 changes behavior of makedirs when exist_ok=True. 2014 2015 - Issue #20990: Fix issues found by pyflakes for multiprocessing. 2016 2017 - Issue #21015: SSL contexts will now automatically select an elliptic 2018 curve for ECDH key exchange on OpenSSL 1.0.2 and later, and otherwise 2019 default to "prime256v1". 2020 2021 - Issue #20995: Enhance default ciphers used by the ssl module to enable 2022 better security an prioritize perfect forward secrecy. 2023 2024 - Issue #20884: Don't assume that __file__ is defined on importlib.__init__. 2025 2026 - Issue #21499: Ignore __builtins__ in several test_importlib.test_api tests. 2027 2028 - Issue #20879: Delay the initialization of encoding and decoding tables for 2029 base32, ascii85 and base85 codecs in the base64 module, and delay the 2030 initialization of the unquote_to_bytes() table of the urllib.parse module, to 2031 not waste memory if these modules are not used. 2032 2033 - Issue #19157: Include the broadcast address in the usuable hosts for IPv6 2034 in ipaddress. 2035 2036 - Issue #11599: When an external command (e.g. compiler) fails, distutils now 2037 prints out the whole command line (instead of just the command name) if the 2038 environment variable DISTUTILS_DEBUG is set. 2039 2040 - Issue #4931: distutils should not produce unhelpful "error: None" messages 2041 anymore. distutils.util.grok_environment_error is kept but doc-deprecated. 2042 2043 - Issue #20875: Prevent possible gzip "'read' is not defined" NameError. 2044 Patch by Claudiu Popa. 2045 2046 - Issue #11558: ``email.message.Message.attach`` now returns a more 2047 useful error message if ``attach`` is called on a message for which 2048 ``is_multipart`` is False. 2049 2050 - Issue #20283: RE pattern methods now accept the string keyword parameters 2051 as documented. The pattern and source keyword parameters are left as 2052 deprecated aliases. 2053 2054 - Issue #20778: Fix modulefinder to work with bytecode-only modules. 2055 2056 - Issue #20791: copy.copy() now doesn't make a copy when the input is 2057 a bytes object. Initial patch by Peter Otten. 2058 2059 - Issue #19748: On AIX, time.mktime() now raises an OverflowError for year 2060 outsize range [1902; 2037]. 2061 2062 - Issue #20816: Fix inspect.getcallargs() to raise correct TypeError for 2063 missing keyword-only arguments. Patch by Jeremiah Lowin. 2064 2065 - Issue #20817: Fix inspect.getcallargs() to fail correctly if more 2066 than 3 arguments are missing. Patch by Jeremiah Lowin. 2067 2068 - Issue #6676: Ensure a meaningful exception is raised when attempting 2069 to parse more than one XML document per pyexpat xmlparser instance. 2070 (Original patches by Hirokazu Yamamoto and Amaury Forgeot d'Arc, with 2071 suggested wording by David Gutteridge) 2072 2073 - Issue #21117: Fix inspect.signature to better support functools.partial. 2074 Due to the specifics of functools.partial implementation, 2075 positional-or-keyword arguments passed as keyword arguments become 2076 keyword-only. 2077 2078 - Issue #21209: Fix asyncio.tasks.CoroWrapper to workaround a bug 2079 in yield-from implementation in CPythons prior to 3.4.1. 2080 2081 - asyncio: Add gi_{frame,running,code} properties to CoroWrapper 2082 (upstream issue #163). 2083 2084 - Issue #21311: Avoid exception in _osx_support with non-standard compiler 2085 configurations. Patch by John Szakmeister. 2086 2087 - Issue #11571: Ensure that the turtle window becomes the topmost window 2088 when launched on OS X. 2089 2090 Extension Modules 2091 ----------------- 2092 2093 - Issue #21276: posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd. 2094 2095 - Issue #21226: Set up modules properly in PyImport_ExecCodeModuleObject 2096 (and friends). 2097 2098 IDLE 2099 ---- 2100 2101 - Issue #21139: Change default paragraph width to 72, the PEP 8 recommendation. 2102 2103 - Issue #21284: Paragraph reformat test passes after user changes reformat width. 2104 2105 - Issue #17654: Ensure IDLE menus are customized properly on OS X for 2106 non-framework builds and for all variants of Tk. 2107 2108 Build 2109 ----- 2110 2111 - The Windows build now includes OpenSSL 1.0.1g 2112 2113 - Issue #21285: Refactor and fix curses configure check to always search 2114 in a ncursesw directory. 2115 2116 - Issue #15234: For BerkelyDB and Sqlite, only add the found library and 2117 include directories if they aren't already being searched. This avoids 2118 an explicit runtime library dependency. 2119 2120 - Issue #20644: OS X installer build support for documentation build changes 2121 in 3.4.1: assume externally supplied sphinx-build is available in /usr/bin. 2122 2123 C API 2124 ----- 2125 2126 - Issue #20942: PyImport_ImportFrozenModuleObject() no longer sets __file__ to 2127 match what importlib does; this affects _frozen_importlib as well as any 2128 module loaded using imp.init_frozen(). 2129 2130 Documentation 2131 ------------- 2132 2133 - Issue #17386: Expanded functionality of the ``Doc/make.bat`` script to make 2134 it much more comparable to ``Doc/Makefile``. 2135 2136 - Issue #21043: Remove the recommendation for specific CA organizations and to 2137 mention the ability to load the OS certificates. 2138 2139 - Issue #20765: Add missing documentation for PurePath.with_name() and 2140 PurePath.with_suffix(). 2141 2142 - Issue #19407: New package installation and distribution guides based on 2143 the Python Packaging Authority tools. Existing guides have been retained 2144 as legacy links from the distutils docs, as they still contain some 2145 required reference material for tool developers that isn't recorded 2146 anywhere else. 2147 2148 - Issue #19697: Document cases where __main__.__spec__ is None. 2149 2150 Tests 2151 ----- 2152 2153 - Issue #18604: Consolidated checks for GUI availability. All platforms now 2154 at least check whether Tk can be instantiated when the GUI resource is 2155 requested. 2156 2157 - Issue #21275: Fix a socket test on KFreeBSD. 2158 2159 - Issue #21223: Pass test_site/test_startup_imports when some of the extensions 2160 are built as builtins. 2161 2162 - Issue #20635: Added tests for Tk geometry managers. 2163 2164 - Add test case for freeze. 2165 2166 - Issue #20743: Fix a reference leak in test_tcl. 2167 2168 - Issue #21097: Move test_namespace_pkgs into test_importlib. 2169 2170 - Issue #20939: Avoid various network test failures due to new 2171 redirect of http://www.python.org/ to https://www.python.org: 2172 use http://www.example.com instead. 2173 2174 - Issue #20668: asyncio tests no longer rely on tests.txt file. 2175 (Patch by Vajrasky Kok) 2176 2177 - Issue #21093: Prevent failures of ctypes test_macholib on OS X if a 2178 copy of libz exists in $HOME/lib or /usr/local/lib. 2179 2180 Tools/Demos 2181 ----------- 2182 2183 - Add support for ``yield from`` to 2to3. 2184 2185 - Add support for the PEP 465 matrix multiplication operator to 2to3. 2186 2187 - Issue #16047: Fix module exception list and __file__ handling in freeze. 2188 Patch by Meador Inge. 2189 2190 - Issue #11824: Consider ABI tags in freeze. Patch by Meador Inge. 2191 2192 - Issue #20535: PYTHONWARNING no longer affects the run_tests.py script. 2193 Patch by Arfrever Frehtes Taifersar Arahesis. 2194 2195 2196 What's New in Python 3.4.0? 2197 =========================== 2198 2199 Release date: 2014-03-16 2200 2201 Library 2202 ------- 2203 2204 - Issue #20939: Fix test_geturl failure in test_urllibnet due to 2205 new redirect of http://www.python.org/ to https://www.python.org. 2206 2207 Documentation 2208 ------------- 2209 2210 - Merge in all documentation changes since branching 3.4.0rc1. 2211 2212 2213 What's New in Python 3.4.0 release candidate 3? 2214 =============================================== 2215 2216 Release date: 2014-03-09 2217 2218 Core and Builtins 2219 ----------------- 2220 2221 - Issue #20786: Fix signatures for dict.__delitem__ and 2222 property.__delete__ builtins. 2223 2224 Library 2225 ------- 2226 2227 - Issue #20839: Don't trigger a DeprecationWarning in the still supported 2228 pkgutil.get_loader() API when __loader__ isn't set on a module (nor 2229 when pkgutil.find_loader() is called directly). 2230 2231 Build 2232 ----- 2233 2234 - Issue #14512: Launch pydoc -b instead of pydocgui.pyw on Windows. 2235 2236 - Issue #20748: Uninstalling pip does not leave behind the pyc of 2237 the uninstaller anymore. 2238 2239 - Issue #20568: The Windows installer now installs the unversioned ``pip`` 2240 command in addition to the versioned ``pip3`` and ``pip3.4`` commands. 2241 2242 - Issue #20757: The ensurepip helper for the Windows uninstaller now skips 2243 uninstalling pip (rather than failing) if the user has updated pip to a 2244 different version from the one bundled with ensurepip. 2245 2246 - Issue #20465: Update OS X and Windows installer builds to use 2247 SQLite 3.8.3.1. 2248 2249 2250 What's New in Python 3.4.0 release candidate 2? 2251 =============================================== 2252 2253 Release date: 2014-02-23 2254 2255 Core and Builtins 2256 ----------------- 2257 2258 - Issue #20625: Parameter names in __annotations__ were not mangled properly. 2259 Discovered by Jonas Wielicki, patch by Yury Selivanov. 2260 2261 - Issue #20261: In pickle, lookup __getnewargs__ and __getnewargs_ex__ on the 2262 type of the object. 2263 2264 - Issue #20619: Give the AST nodes of keyword-only arguments a column and line 2265 number. 2266 2267 - Issue #20526: Revert changes of issue #19466 which introduces a regression: 2268 don't clear anymore the state of Python threads early during the Python 2269 shutdown. 2270 2271 Library 2272 ------- 2273 2274 - Issue #20710: The pydoc summary line no longer displays the "self" parameter 2275 for bound methods. 2276 2277 - Issue #20566: Change asyncio.as_completed() to use a Queue, to 2278 avoid O(N**2) behavior. 2279 2280 - Issue #20704: Implement new debug API in asyncio. Add new methods 2281 BaseEventLoop.set_debug() and BaseEventLoop.get_debug(). 2282 Add support for setting 'asyncio.tasks._DEBUG' variable with 2283 'PYTHONASYNCIODEBUG' environment variable. 2284 2285 - asyncio: Refactoring and fixes: BaseEventLoop.sock_connect() raises an 2286 error if the address is not resolved; use __slots__ in Handle and 2287 TimerHandle; as_completed() and wait() raise TypeError if the passed 2288 list of Futures is a single Future; call_soon() and other 'call_*()' 2289 functions raise TypeError if the passed callback is a coroutine 2290 function; _ProactorBasePipeTransport uses _FlowControlMixin; 2291 WriteTransport.set_write_buffer_size() calls _maybe_pause_protocol() 2292 to consider pausing receiving if the watermark limits have changed; 2293 fix _check_resolved_address() for IPv6 address; and other minor 2294 improvements, along with multiple documentation updates. 2295 2296 - Issue #20684: Fix inspect.getfullargspec() to not to follow __wrapped__ 2297 chains. Make its behaviour consistent with bound methods first argument. 2298 Patch by Nick Coghlan and Yury Selivanov. 2299 2300 - Issue #20681: Add new error handling API in asyncio. New APIs: 2301 loop.set_exception_handler(), loop.default_exception_handler(), and 2302 loop.call_exception_handler(). 2303 2304 - Issue #20673: Implement support for UNIX Domain Sockets in asyncio. 2305 New APIs: loop.create_unix_connection(), loop.create_unix_server(), 2306 streams.open_unix_connection(), and streams.start_unix_server(). 2307 2308 - Issue #20616: Add a format() method to tracemalloc.Traceback. 2309 2310 - Issue #19744: the ensurepip installation step now just prints a warning to 2311 stderr rather than failing outright if SSL/TLS is unavailable. This allows 2312 local installation of POSIX builds without SSL/TLS support. 2313 2314 - Issue #20594: Avoid name clash with the libc function posix_close. 2315 2316 Build 2317 ----- 2318 2319 - Issue #20641: Run MSI custom actions (pip installation, pyc compilation) 2320 with the NoImpersonate flag, to support elevated execution (UAC). 2321 2322 - Issue #20221: Removed conflicting (or circular) hypot definition when 2323 compiled with VS 2010 or above. Initial patch by Tabrez Mohammed. 2324 2325 - Issue #20609: Restored the ability to build 64-bit Windows binaries on 2326 32-bit Windows, which was broken by the change in issue #19788. 2327 2328 2329 What's New in Python 3.4.0 release candidate 1? 2330 =============================================== 2331 2332 Release date: 2014-02-10 2333 2334 Core and Builtins 2335 ----------------- 2336 2337 - Issue #19255: The builtins module is restored to initial value before 2338 cleaning other modules. The sys and builtins modules are cleaned last. 2339 2340 - Issue #20588: Make Python-ast.c C89 compliant. 2341 2342 - Issue #20437: Fixed 22 potential bugs when deleting objects references. 2343 2344 - Issue #20500: Displaying an exception at interpreter shutdown no longer 2345 risks triggering an assertion failure in PyObject_Str. 2346 2347 - Issue #20538: UTF-7 incremental decoder produced inconsistent string when 2348 input was truncated in BASE64 section. 2349 2350 - Issue #20404: io.TextIOWrapper (and hence the open() builtin) now uses the 2351 internal codec marking system added for issue #19619 to throw LookupError 2352 for known non-text encodings at stream construction time. The existing 2353 output type checks remain in place to deal with unmarked third party 2354 codecs. 2355 2356 - Issue #17162: Add PyType_GetSlot. 2357 2358 - Issue #20162: Fix an alignment issue in the siphash24() hash function which 2359 caused a crash on PowerPC 64-bit (ppc64). 2360 2361 Library 2362 ------- 2363 2364 - Issue #20530: The signatures for slot builtins have been updated 2365 to reflect the fact that they only accept positional-only arguments. 2366 2367 - Issue #20517: Functions in the os module that accept two filenames 2368 now register both filenames in the exception on failure. 2369 2370 - Issue #20563: The ipaddress module API is now considered stable. 2371 2372 - Issue #14983: email.generator now always adds a line end after each MIME 2373 boundary marker, instead of doing so only when there is an epilogue. This 2374 fixes an RFC compliance bug and solves an issue with signed MIME parts. 2375 2376 - Issue #20540: Fix a performance regression (vs. Python 3.2) when layering 2377 a multiprocessing Connection over a TCP socket. For small payloads, Nagle's 2378 algorithm would introduce idle delays before the entire transmission of a 2379 message. 2380 2381 - Issue #16983: the new email header parsing code will now decode encoded words 2382 that are (incorrectly) surrounded by quotes, and register a defect. 2383 2384 - Issue #19772: email.generator no longer mutates the message object when 2385 doing a down-transform from 8bit to 7bit CTEs. 2386 2387 - Issue #20536: the statistics module now correctly handle Decimal instances 2388 with positive exponents 2389 2390 - Issue #18805: the netmask/hostmask parsing in ipaddress now more reliably 2391 filters out illegal values and correctly allows any valid prefix length. 2392 2393 - Issue #20481: For at least Python 3.4, the statistics module will require 2394 that all inputs for a single operation be of a single consistent type, or 2395 else a mixed of ints and a single other consistent type. This avoids 2396 some interoperability issues that arose with the previous approach of 2397 coercing to a suitable common type. 2398 2399 - Issue #20478: the statistics module now treats collections.Counter inputs 2400 like any other iterable. 2401 2402 - Issue #17369: get_filename was raising an exception if the filename 2403 parameter's RFC2231 encoding was broken in certain ways. This was 2404 a regression relative to python2. 2405 2406 - Issue #20013: Some imap servers disconnect if the current mailbox is 2407 deleted, and imaplib did not handle that case gracefully. Now it 2408 handles the 'bye' correctly. 2409 2410 - Issue #20531: Revert 3.4 version of fix for #19063, and apply the 3.3 2411 version. That is, do *not* raise an error if unicode is passed to 2412 email.message.Message.set_payload. 2413 2414 - Issue #20476: If a non-compat32 policy is used with any of the email parsers, 2415 EmailMessage is now used as the factory class. The factory class should 2416 really come from the policy; that will get fixed in 3.5. 2417 2418 - Issue #19920: TarFile.list() no longer fails when outputs a listing 2419 containing non-encodable characters. Based on patch by Vajrasky Kok. 2420 2421 - Issue #20515: Fix NULL pointer dereference introduced by issue #20368. 2422 2423 - Issue #19186: Restore namespacing of expat symbols inside the pyexpat module. 2424 2425 - Issue #20053: ensurepip (and hence venv) are no longer affected by the 2426 settings in the default pip configuration file. 2427 2428 - Issue #20426: When passing the re.DEBUG flag, re.compile() displays the 2429 debug output every time it is called, regardless of the compilation cache. 2430 2431 - Issue #20368: The null character now correctly passed from Tcl to Python. 2432 Improved error handling in variables-related commands. 2433 2434 - Issue #20435: Fix _pyio.StringIO.getvalue() to take into account newline 2435 translation settings. 2436 2437 - tracemalloc: Fix slicing traces and fix slicing a traceback. 2438 2439 - Issue #20354: Fix an alignment issue in the tracemalloc module on 64-bit 2440 platforms. Bug seen on 64-bit Linux when using "make profile-opt". 2441 2442 - Issue #17159: inspect.signature now accepts duck types of functions, 2443 which adds support for Cython functions. Initial patch by Stefan Behnel. 2444 2445 - Issue #18801: Fix inspect.classify_class_attrs to correctly classify 2446 object.__new__ and object.__init__. 2447 2448 - Fixed cmath.isinf's name in its argument parsing code. 2449 2450 - Issue #20311, #20452: poll and epoll now round the timeout away from zero, 2451 instead of rounding towards zero, in select and selectors modules: 2452 select.epoll.poll(), selectors.PollSelector.poll() and 2453 selectors.EpollSelector.poll(). For example, a timeout of one microsecond 2454 (1e-6) is now rounded to one millisecondi (1e-3), instead of being rounded to 2455 zero. However, the granularity property and asyncio's resolution feature 2456 were removed again. 2457 2458 - asyncio: Some refactoring; various fixes; add write flow control to 2459 unix pipes; Future.set_exception() instantiates the exception 2460 argument if it is a class; improved proactor pipe transport; support 2461 wait_for(f, None); don't log broken/disconnected pipes; use 2462 ValueError instead of assert for forbidden subprocess_{shell,exec} 2463 arguments; added a convenience API for subprocess management; added 2464 StreamReader.at_eof(); properly handle duplicate coroutines/futures 2465 in gather(), wait(), as_completed(); use a bytearray for buffering 2466 in StreamReader; and more. 2467 2468 - Issue #20288: fix handling of invalid numeric charrefs in HTMLParser. 2469 2470 - Issue #20424: Python implementation of io.StringIO now supports lone surrogates. 2471 2472 - Issue #20308: inspect.signature now works on classes without user-defined 2473 __init__ or __new__ methods. 2474 2475 - Issue #20372: inspect.getfile (and a bunch of other inspect functions that 2476 use it) doesn't crash with unexpected AttributeError on classes defined in C 2477 without __module__. 2478 2479 - Issue #20356: inspect.signature formatting uses '/' to separate 2480 positional-only parameters from others. 2481 2482 - Issue #20223: inspect.signature now supports methods defined with 2483 functools.partialmethods. 2484 2485 - Issue #19456: ntpath.join() now joins relative paths correctly when a drive 2486 is present. 2487 2488 - Issue #19077: tempfile.TemporaryDirectory cleanup no longer fails when 2489 called during shutdown. Emitting resource warning in __del__ no longer fails. 2490 Original patch by Antoine Pitrou. 2491 2492 - Issue #20394: Silence Coverity warning in audioop module. 2493 2494 - Issue #20367: Fix behavior of concurrent.futures.as_completed() for 2495 duplicate arguments. Patch by Glenn Langford. 2496 2497 - Issue #8260: The read(), readline() and readlines() methods of 2498 codecs.StreamReader returned incomplete data when were called after 2499 readline() or read(size). Based on patch by Amaury Forgeot d'Arc. 2500 2501 - Issue #20105: the codec exception chaining now correctly sets the 2502 traceback of the original exception as its __traceback__ attribute. 2503 2504 - Issue #17481: inspect.getfullargspec() now uses inspect.signature() API. 2505 2506 - Issue #15304: concurrent.futures.wait() can block forever even if 2507 Futures have completed. Patch by Glenn Langford. 2508 2509 - Issue #14455: plistlib: fix serializing integers in the range 2510 of an unsigned long long but outside of the range of signed long long for 2511 binary plist files. 2512 2513 IDLE 2514 ---- 2515 2516 - Issue #20406: Use Python application icons for Idle window title bars. 2517 Patch mostly by Serhiy Storchaka. 2518 2519 - Update the python.gif icon for the Idle classbrowser and pathbowser 2520 from the old green snake to the new blue and yellow snakes. 2521 2522 - Issue #17721: Remove non-functional configuration dialog help button until we 2523 make it actually gives some help when clicked. Patch by Guilherme Simões. 2524 2525 Tests 2526 ----- 2527 2528 - Issue #20532: Tests which use _testcapi now are marked as CPython only. 2529 2530 - Issue #19920: Added tests for TarFile.list(). Based on patch by Vajrasky Kok. 2531 2532 - Issue #19990: Added tests for the imghdr module. Based on patch by 2533 Claudiu Popa. 2534 2535 - Issue #20474: Fix test_socket "unexpected success" failures on OS X 10.7+. 2536 2537 Tools/Demos 2538 ----------- 2539 2540 - Issue #20530: Argument Clinic's signature format has been revised again. 2541 The new syntax is highly human readable while still preventing false 2542 positives. The syntax also extends Python syntax to denote "self" and 2543 positional-only parameters, allowing inspect.Signature objects to be 2544 totally accurate for all supported builtins in Python 3.4. 2545 2546 - Issue #20456: Argument Clinic now observes the C preprocessor conditional 2547 compilation statements of the C files it parses. When a Clinic block is 2548 inside a conditional code, it adjusts its output to match, including 2549 automatically generating an empty methoddef macro. 2550 2551 - Issue #20456: Cloned functions in Argument Clinic now use the correct 2552 name, not the name of the function they were cloned from, for text 2553 strings inside generated code. 2554 2555 - Issue #20456: Fixed Argument Clinic's test suite and "--converters" feature. 2556 2557 - Issue #20456: Argument Clinic now allows specifying different names 2558 for a parameter in Python and C, using "as" on the parameter line. 2559 2560 - Issue #20326: Argument Clinic now uses a simple, unique signature to 2561 annotate text signatures in docstrings, resulting in fewer false 2562 positives. "self" parameters are also explicitly marked, allowing 2563 inspect.Signature() to authoritatively detect (and skip) said parameters. 2564 2565 - Issue #20326: Argument Clinic now generates separate checksums for the 2566 input and output sections of the block, allowing external tools to verify 2567 that the input has not changed (and thus the output is not out-of-date). 2568 2569 Build 2570 ----- 2571 2572 - Issue #20465: Update SQLite shipped with OS X installer to 3.8.3. 2573 2574 C-API 2575 ----- 2576 2577 - Issue #20517: Added new functions allowing OSError exceptions to reference 2578 two filenames instead of one: PyErr_SetFromErrnoWithFilenameObjects() and 2579 PyErr_SetExcFromWindowsErrWithFilenameObjects(). 2580 2581 Documentation 2582 ------------- 2583 2584 - Issue #20488: Change wording to say importlib is *the* implementation of 2585 import instead of just *an* implementation. 2586 2587 - Issue #6386: Clarify in the tutorial that specifying a symlink to execute 2588 means the directory containing the executed script and not the symlink is 2589 added to sys.path. 2590 2591 2592 What's New in Python 3.4.0 Beta 3? 2593 ================================== 2594 2595 Release date: 2014-01-26 2596 2597 Core and Builtins 2598 ----------------- 2599 2600 - Issue #20189: Four additional builtin types (PyTypeObject, 2601 PyMethodDescr_Type, _PyMethodWrapper_Type, and PyWrapperDescr_Type) 2602 have been modified to provide introspection information for builtins. 2603 2604 - Issue #17825: Cursor "^" is correctly positioned for SyntaxError and 2605 IndentationError. 2606 2607 - Issue #2382: SyntaxError cursor "^" is now written at correct position in most 2608 cases when multibyte characters are in line (before "^"). This still not 2609 works correctly with wide East Asian characters. 2610 2611 - Issue #18960: The first line of Python script could be executed twice when 2612 the source encoding was specified on the second line. Now the source encoding 2613 declaration on the second line isn't effective if the first line contains 2614 anything except a comment. 'python -x' works now again with files with the 2615 source encoding declarations, and can be used to make Python batch files 2616 on Windows. 2617 2618 Library 2619 ------- 2620 2621 - asyncio: Various improvements and small changes not all covered by 2622 issues listed below. E.g. wait_for() now cancels the inner task if 2623 the timeout occcurs; tweaked the set of exported symbols; renamed 2624 Empty/Full to QueueEmpty/QueueFull; "with (yield from lock)" now 2625 uses a separate context manager; readexactly() raises if not enough 2626 data was read; PTY support tweaks. 2627 2628 - Issue #20311: asyncio: Add a granularity attribute to BaseEventLoop: maximum 2629 between the resolution of the BaseEventLoop.time() method and the resolution 2630 of the selector. The granuarility is used in the scheduler to round time and 2631 deadline. 2632 2633 - Issue #20311: selectors: Add a resolution attribute to BaseSelector. 2634 2635 - Issue #20189: unittest.mock now no longer assumes that any object for 2636 which it could get an inspect.Signature is a callable written in Python. 2637 Fix courtesy of Michael Foord. 2638 2639 - Issue #20317: ExitStack.__exit__ could create a self-referential loop if an 2640 exception raised by a cleanup operation already had its context set 2641 correctly (for example, by the @contextmanager decorator). The infinite 2642 loop this caused is now avoided by checking if the expected context is 2643 already set before trying to fix it. 2644 2645 - Issue #20374: Fix build with GNU readline >= 6.3. 2646 2647 - Issue #20262: Warnings are raised now when duplicate names are added in the 2648 ZIP file or too long ZIP file comment is truncated. 2649 2650 - Issue #20165: The unittest module no longer considers tests marked with 2651 @expectedFailure successful if they pass. 2652 2653 - Issue #18574: Added missing newline in 100-Continue reply from 2654 http.server.BaseHTTPRequestHandler. Patch by Nikolaus Rath. 2655 2656 - Issue #20270: urllib.urlparse now supports empty ports. 2657 2658 - Issue #20243: TarFile no longer raise ReadError when opened in write mode. 2659 2660 - Issue #20238: TarFile opened with external fileobj and "w:gz" mode didn't 2661 write complete output on close. 2662 2663 - Issue #20245: The open functions in the tarfile module now correctly handle 2664 empty mode. 2665 2666 - Issue #20242: Fixed basicConfig() format strings for the alternative 2667 formatting styles. Thanks to kespindler for the bug report and patch. 2668 2669 - Issue #20246: Fix buffer overflow in socket.recvfrom_into. 2670 2671 - Issues #20206 and #5803: Fix edge case in email.quoprimime.encode where it 2672 truncated lines ending in a character needing encoding but no newline by 2673 using a more efficient algorithm that doesn't have the bug. 2674 2675 - Issue #19082: Working xmlrpc.server and xmlrpc.client examples. Both in 2676 modules and in documentation. Initial patch contributed by Vajrasky Kok. 2677 2678 - Issue #20138: The wsgiref.application_uri() and wsgiref.request_uri() 2679 functions now conform to PEP 3333 when handle non-ASCII URLs. 2680 2681 - Issue #19097: Raise the correct Exception when cgi.FieldStorage is given an 2682 invalid fileobj. 2683 2684 - Issue #20152: Ported Python/import.c over to Argument Clinic. 2685 2686 - Issue #13107: argparse and optparse no longer raises an exception when output 2687 a help on environment with too small COLUMNS. Based on patch by 2688 Elazar Gershuni. 2689 2690 - Issue #20207: Always disable SSLv2 except when PROTOCOL_SSLv2 is explicitly 2691 asked for. 2692 2693 - Issue #18960: The tokenize module now ignore the source encoding declaration 2694 on the second line if the first line contains anything except a comment. 2695 2696 - Issue #20078: Reading malformed zipfiles no longer hangs with 100% CPU 2697 consumption. 2698 2699 - Issue #20113: os.readv() and os.writev() now raise an OSError exception on 2700 error instead of returning -1. 2701 2702 - Issue #19719: Make importlib.abc.MetaPathFinder.find_module(), 2703 PathEntryFinder.find_loader(), and Loader.load_module() use PEP 451 APIs to 2704 help with backwards-compatibility. 2705 2706 - Issue #20144: inspect.Signature now supports parsing simple symbolic 2707 constants as parameter default values in __text_signature__. 2708 2709 - Issue #20072: Fixed multiple errors in tkinter with wantobjects is False. 2710 2711 - Issue #20229: Avoid plistlib deprecation warning in platform.mac_ver(). 2712 2713 - Issue #14455: Fix some problems with the new binary plist support in plistlib. 2714 2715 IDLE 2716 ---- 2717 2718 - Issue #17390: Add Python version to Idle editor window title bar. 2719 Original patches by Edmond Burnett and Kent Johnson. 2720 2721 - Issue #18960: IDLE now ignores the source encoding declaration on the second 2722 line if the first line contains anything except a comment. 2723 2724 Tests 2725 ----- 2726 2727 - Issue #20358: Tests for curses.window.overlay and curses.window.overwrite 2728 no longer specify min{row,col} > max{row,col}. 2729 2730 - Issue #19804: The test_find_mac test in test_uuid is now skipped if the 2731 ifconfig executable is not available. 2732 2733 - Issue #19886: Use better estimated memory requirements for bigmem tests. 2734 2735 Tools/Demos 2736 ----------- 2737 2738 - Issue #20390: Argument Clinic's "file" output preset now defaults to 2739 "{dirname}/clinic/{basename}.h". 2740 2741 - Issue #20390: Argument Clinic's "class" directive syntax has been extended 2742 with two new required arguments: "typedef" and "type_object". 2743 2744 - Issue #20390: Argument Clinic: If __new__ or __init__ functions didn't use 2745 kwargs (or args), the PyArg_NoKeywords (or PyArg_NoPositional) calls 2746 generated are only run when the type object is an exact match. 2747 2748 - Issue #20390: Argument Clinic now fails if you have required parameters after 2749 optional parameters. 2750 2751 - Issue #20390: Argument Clinic converters now have a new template they can 2752 inject code into: "modifiers". Code put there is run in the parsing 2753 function after argument parsing but before the call to the impl. 2754 2755 - Issue #20376: Argument Clinic now escapes backslashes in docstrings. 2756 2757 - Issue #20381: Argument Clinic now sanity checks the default argument when 2758 c_default is also specified, providing a nice failure message for 2759 disallowed values. 2760 2761 - Issue #20189: Argument Clinic now ensures that parser functions for 2762 __new__ are always of type newfunc, the type of the tp_new slot. 2763 Similarly, parser functions for __init__ are now always of type initproc, 2764 the type of tp_init. 2765 2766 - Issue #20189: Argument Clinic now suppresses the docstring for __new__ 2767 and __init__ functions if no docstring is provided in the input. 2768 2769 - Issue #20189: Argument Clinic now suppresses the "self" parameter in the 2770 impl for @staticmethod functions. 2771 2772 - Issue #20294: Argument Clinic now supports argument parsing for __new__ and 2773 __init__ functions. 2774 2775 - Issue #20299: Argument Clinic custom converters may now change the default 2776 value of c_default and py_default with a class member. 2777 2778 - Issue #20287: Argument Clinic's output is now configurable, allowing 2779 delaying its output or even redirecting it to a separate file. 2780 2781 - Issue #20226: Argument Clinic now permits simple expressions 2782 (e.g. "sys.maxsize - 1") as default values for parameters. 2783 2784 - Issue #19936: Added executable bits or shebang lines to Python scripts which 2785 requires them. Disable executable bits and shebang lines in test and 2786 benchmark files in order to prevent using a random system python, and in 2787 source files of modules which don't provide command line interface. Fixed 2788 shebang lines in the unittestgui and checkpip scripts. 2789 2790 - Issue #20268: Argument Clinic now supports cloning the parameters and 2791 return converter of existing functions. 2792 2793 - Issue #20228: Argument Clinic now has special support for class special 2794 methods. 2795 2796 - Issue #20214: Fixed a number of small issues and documentation errors in 2797 Argument Clinic (see issue for details). 2798 2799 - Issue #20196: Fixed a bug where Argument Clinic did not generate correct 2800 parsing code for functions with positional-only parameters where all arguments 2801 are optional. 2802 2803 - Issue #18960: 2to3 and the findnocoding.py script now ignore the source 2804 encoding declaration on the second line if the first line contains anything 2805 except a comment. 2806 2807 - Issue #19723: The marker comments Argument Clinic uses have been changed 2808 to improve readability. 2809 2810 - Issue #20157: When Argument Clinic renames a parameter because its name 2811 collides with a C keyword, it no longer exposes that rename to PyArg_Parse. 2812 2813 - Issue #20141: Improved Argument Clinic's support for the PyArg_Parse "O!" 2814 format unit. 2815 2816 - Issue #20144: Argument Clinic now supports simple symbolic constants 2817 as parameter default values. 2818 2819 - Issue #20143: The line numbers reported in Argument Clinic errors are 2820 now more accurate. 2821 2822 - Issue #20142: Py_buffer variables generated by Argument Clinic are now 2823 initialized with a default value. 2824 2825 Build 2826 ----- 2827 2828 - Issue #12837: Silence a tautological comparison warning on OS X under Clang in 2829 socketmodule.c. 2830 2831 2832 What's New in Python 3.4.0 Beta 2? 2833 ================================== 2834 2835 Release date: 2014-01-05 2836 2837 Core and Builtins 2838 ----------------- 2839 2840 - Issue #17432: Drop UCS2 from names of Unicode functions in python3.def. 2841 2842 - Issue #19526: Exclude all new API from the stable ABI. Exceptions can be 2843 made if a need is demonstrated. 2844 2845 - Issue #19969: PyBytes_FromFormatV() now raises an OverflowError if "%c" 2846 argument is not in range [0; 255]. 2847 2848 - Issue #19995: %c, %o, %x, and %X now issue a DeprecationWarning on non-integer 2849 input; reworded docs to clarify that an integer type should define both __int__ 2850 and __index__. 2851 2852 - Issue #19787: PyThread_set_key_value() now always set the value. In Python 2853 3.3, the function did nothing if the key already exists (if the current value 2854 is a non-NULL pointer). 2855 2856 - Issue #14432: Remove the thread state field from the frame structure. Fix a 2857 crash when a generator is created in a C thread that is destroyed while the 2858 generator is still used. The issue was that a generator contains a frame, and 2859 the frame kept a reference to the Python state of the destroyed C thread. The 2860 crash occurs when a trace function is setup. 2861 2862 - Issue #19576: PyGILState_Ensure() now initializes threads. At startup, Python 2863 has no concrete GIL. If PyGILState_Ensure() is called from a new thread for 2864 the first time and PyEval_InitThreads() was not called yet, a GIL needs to be 2865 created. 2866 2867 - Issue #17576: Deprecation warning emitted now when __int__() or __index__() 2868 return not int instance. 2869 2870 - Issue #19932: Fix typo in import.h, missing whitespaces in function prototypes. 2871 2872 - Issue #19736: Add module-level statvfs constants defined for GNU/glibc 2873 based systems. 2874 2875 - Issue #20097: Fix bad use of "self" in importlib's WindowsRegistryFinder. 2876 2877 - Issue #19729: In str.format(), fix recursive expansion in format spec. 2878 2879 - Issue #19638: Fix possible crash / undefined behaviour from huge (more than 2 2880 billion characters) input strings in _Py_dg_strtod. 2881 2882 Library 2883 ------- 2884 2885 - Issue #20154: Deadlock in asyncio.StreamReader.readexactly(). 2886 2887 - Issue #16113: Remove sha3 module again. 2888 2889 - Issue #20111: pathlib.Path.with_suffix() now sanity checks the given suffix. 2890 2891 - Fix breakage in TestSuite.countTestCases() introduced by issue #11798. 2892 2893 - Issue #20108: Avoid parameter name clash in inspect.getcallargs(). 2894 2895 - Issue #19918: Fix PurePath.relative_to() under Windows. 2896 2897 - Issue #19422: Explicitly disallow non-SOCK_STREAM sockets in the ssl 2898 module, rather than silently let them emit clear text data. 2899 2900 - Issue #20046: Locale alias table no longer contains entities which can be 2901 calculated. Generalized support of the euro modifier. 2902 2903 - Issue #20027: Fixed locale aliases for devanagari locales. 2904 2905 - Issue #20067: Tkinter variables now work when wantobjects is false. 2906 2907 - Issue #19020: Tkinter now uses splitlist() instead of split() in configure 2908 methods. 2909 2910 - Issue #19744: ensurepip now provides a better error message when Python is 2911 built without SSL/TLS support (pip currently requires that support to run, 2912 even if only operating with local wheel files) 2913 2914 - Issue #19734: ensurepip now ignores all pip environment variables to avoid 2915 odd behaviour based on user configuration settings 2916 2917 - Fix TypeError on "setup.py upload --show-response". 2918 2919 - Issue #20045: Fix "setup.py register --list-classifiers". 2920 2921 - Issue #18879: When a method is looked up on a temporary file, avoid closing 2922 the file before the method is possibly called. 2923 2924 - Issue #20037: Avoid crashes when opening a text file late at interpreter 2925 shutdown. 2926 2927 - Issue #19967: Thanks to the PEP 442, asyncio.Future now uses a 2928 destructor to log uncaught exceptions, instead of the dedicated 2929 _TracebackLogger class. 2930 2931 - Added a Task.current_task() class method to asyncio. 2932 2933 - Issue #19850: Set SA_RESTART in asyncio when registering a signal 2934 handler to limit EINTR occurrences. 2935 2936 - Implemented write flow control in asyncio for proactor event loop (Windows). 2937 2938 - Change write buffer in asyncio use to avoid O(N**2) behavior. Make 2939 write()/sendto() accept bytearray/memoryview. 2940 2941 - Issue #20034: Updated alias mapping to most recent locale.alias file 2942 from X.org distribution using makelocalealias.py. 2943 2944 - Issue #5815: Fixed support for locales with modifiers. Fixed support for 2945 locale encodings with hyphens. 2946 2947 - Issue #20026: Fix the sqlite module to handle correctly invalid isolation 2948 level (wrong type). 2949 2950 - Issue #18829: csv.Dialect() now checks type for delimiter, escapechar and 2951 quotechar fields. Original patch by Vajrasky Kok. 2952 2953 - Issue #19855: uuid.getnode() on Unix now looks on the PATH for the 2954 executables used to find the mac address, with /sbin and /usr/sbin as 2955 fallbacks. 2956 2957 - Issue #20007: HTTPResponse.read(0) no more prematurely closes connection. 2958 Original patch by Simon Sapin. 2959 2960 - Issue #19946: multiprocessing now uses runpy to initialize __main__ in 2961 child processes when necessary, allowing it to correctly handle scripts 2962 without suffixes and submodules that use explicit relative imports or 2963 otherwise rely on parent modules being correctly imported prior to 2964 execution. 2965 2966 - Issue #19921: When Path.mkdir() is called with parents=True, any missing 2967 parent is created with the default permissions, ignoring the mode argument 2968 (mimicking the POSIX "mkdir -p" command). 2969 2970 - Issue #19887: Improve the Path.resolve() algorithm to support certain 2971 symlink chains. 2972 2973 - Issue #19912: Fixed numerous bugs in ntpath.splitunc(). 2974 2975 - Issue #19911: ntpath.splitdrive() now correctly processes the 'İ' character 2976 (U+0130, LATIN CAPITAL LETTER I WITH DOT ABOVE). 2977 2978 - Issue #19532: python -m compileall with no filename/directory arguments now 2979 respects the -f and -q flags instead of ignoring them. 2980 2981 - Issue #19623: Fixed writing to unseekable files in the aifc module. 2982 2983 - Issue #19946: multiprocessing.spawn now raises ImportError when the module to 2984 be used as the main module cannot be imported. 2985 2986 - Issue #17919: select.poll.register() again works with poll.POLLNVAL on AIX. 2987 Fixed integer overflow in the eventmask parameter. 2988 2989 - Issue #19063: if a Charset's body_encoding was set to None, the email 2990 package would generate a message claiming the Content-Transfer-Encoding 2991 was 7bit, and produce garbage output for the content. This now works. 2992 A couple of other set_payload mishandlings of non-ASCII are also fixed. 2993 In addition, calling set_payload with a string argument without 2994 specifying a charset now raises an error (this is a new error in 3.4). 2995 2996 - Issue #15475: Add __sizeof__ implementations for itertools objects. 2997 2998 - Issue #19944: Fix importlib.find_spec() so it imports parents as needed 2999 and move the function to importlib.util. 3000 3001 - Issue #19880: Fix a reference leak in unittest.TestCase. Explicitly break 3002 reference cycles between frames and the _Outcome instance. 3003 3004 - Issue #17429: platform.linux_distribution() now decodes files from the UTF-8 3005 encoding with the surrogateescape error handler, instead of decoding from the 3006 locale encoding in strict mode. It fixes the function on Fedora 19 which is 3007 probably the first major distribution release with a non-ASCII name. Patch 3008 written by Toshio Kuratomi. 3009 3010 - Issue #19343: Expose FreeBSD-specific APIs in resource module. Original 3011 patch by Koobs. 3012 3013 - Issue #19929: Call os.read with 32768 within subprocess.Popen.communicate 3014 rather than 4096 for efficiency. A microbenchmark shows Linux and OS X 3015 both using ~50% less cpu time this way. 3016 3017 - Issue #19506: Use a memoryview to avoid a data copy when piping data 3018 to stdin within subprocess.Popen.communicate. 5-10% less cpu usage. 3019 3020 - Issue #19876: selectors unregister() no longer raises ValueError or OSError 3021 if the FD is closed (as long as it was registered). 3022 3023 - Issue #19908: pathlib now joins relative Windows paths correctly when a drive 3024 is present. Original patch by Antoine Pitrou. 3025 3026 - Issue #19296: Silence compiler warning in dbm_open 3027 3028 - Issue #6784: Strings from Python 2 can now be unpickled as bytes 3029 objects by setting the encoding argument of Unpickler to be 'bytes'. 3030 Initial patch by Merlijn van Deen. 3031 3032 - Issue #19839: Fix regression in bz2 module's handling of non-bzip2 data at 3033 EOF, and analogous bug in lzma module. 3034 3035 - Issue #19881: Fix pickling bug where cpickle would emit bad pickle data for 3036 large bytes string (i.e., with size greater than 2**32-1). 3037 3038 - Issue #19138: doctest's IGNORE_EXCEPTION_DETAIL now allows a match when 3039 no exception detail exists (no colon following the exception's name, or 3040 a colon does follow but no text follows the colon). 3041 3042 - Issue #19927: Add __eq__ to path-based loaders in importlib. 3043 3044 - Issue #19827: On UNIX, setblocking() and settimeout() methods of 3045 socket.socket can now avoid a second syscall if the ioctl() function can be 3046 used, or if the non-blocking flag of the socket is unchanged. 3047 3048 - Issue #19785: smtplib now supports SSLContext.check_hostname and server name 3049 indication for TLS/SSL connections. 3050 3051 - Issue #19784: poplib now supports SSLContext.check_hostname and server name 3052 indication for TLS/SSL connections. 3053 3054 - Issue #19783: nntplib now supports SSLContext.check_hostname and server name 3055 indication for TLS/SSL connections. 3056 3057 - Issue #19782: imaplib now supports SSLContext.check_hostname and server name 3058 indication for TLS/SSL connections. 3059 3060 - Issue #20123: Fix pydoc.synopsis() for "binary" modules. 3061 3062 - Issue #19834: Support unpickling of exceptions pickled by Python 2. 3063 3064 - Issue #19781: ftplib now supports SSLContext.check_hostname and server name 3065 indication for TLS/SSL connections. 3066 3067 - Issue #19509: Add SSLContext.check_hostname to match the peer's certificate 3068 with server_hostname on handshake. 3069 3070 - Issue #15798: Fixed subprocess.Popen() to no longer fail if file 3071 descriptor 0, 1 or 2 is closed. 3072 3073 - Issue #17897: Optimized unpickle prefetching. 3074 3075 - Issue #3693: Make the error message more helpful when the array.array() 3076 constructor is given a str. Move the array module typecode documentation to 3077 the docstring of the constructor. 3078 3079 - Issue #19088: Fixed incorrect caching of the copyreg module in 3080 object.__reduce__() and object.__reduce_ex__(). 3081 3082 - Issue #19698: Removed exec_module() methods from 3083 importlib.machinery.BuiltinImporter and ExtensionFileLoader. 3084 3085 - Issue #18864: Added a setter for ModuleSpec.has_location. 3086 3087 - Fixed _pickle.Unpickler to not fail when loading empty strings as 3088 persistent IDs. 3089 3090 - Issue #11480: Fixed copy.copy to work with classes with custom metaclasses. 3091 Patch by Daniel Urban. 3092 3093 - Issue #6477: Added support for pickling the types of built-in singletons 3094 (i.e., Ellipsis, NotImplemented, None). 3095 3096 - Issue #19713: Add remaining PEP 451-related deprecations and move away 3097 from using find_module/find_loaer/load_module. 3098 3099 - Issue #19708: Update pkgutil to use the new importer APIs. 3100 3101 - Issue #19703: Update pydoc to use the new importer APIs. 3102 3103 - Issue #19851: Fixed a regression in reloading sub-modules. 3104 3105 - ssl.create_default_context() sets OP_NO_COMPRESSION to prevent CRIME. 3106 3107 - Issue #19802: Add socket.SO_PRIORITY. 3108 3109 - Issue #11508: Fixed uuid.getnode() and uuid.uuid1() on environment with 3110 virtual interface. Original patch by Kent Frazier. 3111 3112 - Issue #11489: JSON decoder now accepts lone surrogates. 3113 3114 - Issue #19545: Avoid chained exceptions while passing stray % to 3115 time.strptime(). Initial patch by Claudiu Popa. 3116 3117 IDLE 3118 ---- 3119 3120 - Issue #20058: sys.stdin.readline() in IDLE now always returns only one line. 3121 3122 - Issue #19481: print() of string subclass instance in IDLE no longer hangs. 3123 3124 - Issue #18270: Prevent possible IDLE AttributeError on OS X when no initial 3125 shell window is present. 3126 3127 Tests 3128 ----- 3129 3130 - Issue #20055: Fix test_shutil under Windows with symlink privileges held. 3131 Patch by Vajrasky Kok. 3132 3133 - Issue #20070: Don't run test_urllib2net when network resources are not 3134 enabled. 3135 3136 - Issue #19938: Re-enabled test_bug_1333982 in test_dis, which had been 3137 disabled since 3.0 due to the changes in listcomp handling. 3138 3139 - Issue #19320: test_tcl no longer fails when wantobjects is false. 3140 3141 - Issue #19919: Fix flaky SSL test. connect_ex() sometimes returns 3142 EWOULDBLOCK on Windows or VMs hosted on Windows. 3143 3144 - Issue #19912: Added tests for ntpath.splitunc(). 3145 3146 - Issue #19828: Fixed test_site when the whole suite is run with -S. 3147 3148 - Issue #19928: Implemented a test for repr() of cell objects. 3149 3150 - Issue #19535: Fixed test_docxmlrpc, test_functools, test_inspect, and 3151 test_statistics when python is run with -OO. 3152 3153 - Issue #19926: Removed unneeded test_main from test_abstract_numbers. 3154 Patch by Vajrasky Kok. 3155 3156 - Issue #19572: More skipped tests explicitly marked as skipped. 3157 3158 - Issue #19595, #19987: Re-enabled a long-disabled test in test_winsound. 3159 3160 - Issue #19588: Fixed tests in test_random that were silently skipped most 3161 of the time. Patch by Julian Gindi. 3162 3163 Build 3164 ----- 3165 3166 - Issue #19728: Enable pip installation by default on Windows. 3167 3168 - Issue #16136: Remove VMS support 3169 3170 - Issue #18215: Add script Tools/ssl/test_multiple_versions.py to compile and 3171 run Python's unit tests with multiple versions of OpenSSL. 3172 3173 - Issue #19922: define _INCLUDE__STDC_A1_SOURCE in HP-UX to include mbstate_t 3174 for mbrtowc(). 3175 3176 - Issue #19788: kill_python(_d).exe is now run as a PreBuildEvent on the 3177 pythoncore sub-project. This should prevent build errors due a previous 3178 build's python(_d).exe still running. 3179 3180 Documentation 3181 ------------- 3182 3183 - Issue #20265: Updated some parts of the Using Windows document. 3184 3185 - Issue #20266: Updated some parts of the Windows FAQ. 3186 3187 - Issue #20255: Updated the about and bugs pages. 3188 3189 - Issue #20253: Fixed a typo in the ipaddress docs that advertised an 3190 illegal attribute name. Found by INADA Naoki. 3191 3192 - Issue #18840: Introduce the json module in the tutorial, and de-emphasize 3193 the pickle module. 3194 3195 - Issue #19845: Updated the Compiling Python on Windows section. 3196 3197 - Issue #19795: Improved markup of True/False constants. 3198 3199 Tools/Demos 3200 ----------- 3201 3202 - Issue #19659: Added documentation for Argument Clinic. 3203 3204 - Issue #19976: Argument Clinic METH_NOARGS functions now always 3205 take two parameters. 3206 3207 3208 What's New in Python 3.4.0 Beta 1? 3209 ================================== 3210 3211 Release date: 2013-11-24 3212 3213 Core and Builtins 3214 ----------------- 3215 3216 - Use the repr of a module name in more places in import, especially 3217 exceptions. 3218 3219 - Issue #19619: str.encode, bytes.decode and bytearray.decode now use an 3220 internal API to throw LookupError for known non-text encodings, rather 3221 than attempting the encoding or decoding operation and then throwing a 3222 TypeError for an unexpected output type. (The latter mechanism remains 3223 in place for third party non-text encodings) 3224 3225 - Issue #19183: Implement PEP 456 'secure and interchangeable hash algorithm'. 3226 Python now uses SipHash24 on all major platforms. 3227 3228 - Issue #12892: The utf-16* and utf-32* encoders no longer allow surrogate code 3229 points (U+D800-U+DFFF) to be encoded. The utf-32* decoders no longer decode 3230 byte sequences that correspond to surrogate code points. The surrogatepass 3231 error handler now works with the utf-16* and utf-32* codecs. Based on 3232 patches by Victor Stinner and Kang-Hao (Kenny) Lu. 3233 3234 - Issue #17806: Added keyword-argument support for "tabsize" to 3235 str/bytes.expandtabs(). 3236 3237 - Issue #17828: Output type errors in str.encode(), bytes.decode() and 3238 bytearray.decode() now direct users to codecs.encode() or codecs.decode() 3239 as appropriate. 3240 3241 - Issue #17828: The interpreter now attempts to chain errors that occur in 3242 codec processing with a replacement exception of the same type that 3243 includes the codec name in the error message. It ensures it only does this 3244 when the creation of the replacement exception won't lose any information. 3245 3246 - Issue #19466: Clear the frames of daemon threads earlier during the 3247 Python shutdown to call objects destructors. So "unclosed file" resource 3248 warnings are now correctly emitted for daemon threads. 3249 3250 - Issue #19514: Deduplicate some _Py_IDENTIFIER declarations. 3251 Patch by Andrei Dorian Duma. 3252 3253 - Issue #17936: Fix O(n**2) behaviour when adding or removing many subclasses 3254 of a given type. 3255 3256 - Issue #19428: zipimport now handles errors when reading truncated or invalid 3257 ZIP archive. 3258 3259 - Issue #18408: Add a new PyFrame_FastToLocalsWithError() function to handle 3260 exceptions when merging fast locals into f_locals of a frame. 3261 PyEval_GetLocals() now raises an exception and return NULL on failure. 3262 3263 - Issue #19369: Optimized the usage of __length_hint__(). 3264 3265 - Issue #18603: Ensure that PyOS_mystricmp and PyOS_mystrnicmp are in the 3266 Python executable and not removed by the linker's optimizer. 3267 3268 - Issue #19306: Add extra hints to the faulthandler module's stack 3269 dumps that these are "upside down". 3270 3271 Library 3272 ------- 3273 3274 - Issue #3158: doctest can now find doctests in functions and methods 3275 written in C. 3276 3277 - Issue #13477: Added command line interface to the tarfile module. 3278 Original patch by Berker Peksag. 3279 3280 - Issue #19674: inspect.signature() now produces a correct signature 3281 for some builtins. 3282 3283 - Issue #19722: Added opcode.stack_effect(), which 3284 computes the stack effect of bytecode instructions. 3285 3286 - Issue #19735: Implement private function ssl._create_stdlib_context() to 3287 create SSLContext objects in Python's stdlib module. It provides a single 3288 configuration point and makes use of SSLContext.load_default_certs(). 3289 3290 - Issue #16203: Add re.fullmatch() function and regex.fullmatch() method, 3291 which anchor the pattern at both ends of the string to match. 3292 Original patch by Matthew Barnett. 3293 3294 - Issue #13592: Improved the repr for regular expression pattern objects. 3295 Based on patch by Hugo Lopes Tavares. 3296 3297 - Issue #19641: Added the audioop.byteswap() function to convert big-endian 3298 samples to little-endian and vice versa. 3299 3300 - Issue #15204: Deprecated the 'U' mode in file-like objects. 3301 3302 - Issue #17810: Implement PEP 3154, pickle protocol 4. 3303 3304 - Issue #19668: Added support for the cp1125 encoding. 3305 3306 - Issue #19689: Add ssl.create_default_context() factory function. It creates 3307 a new SSLContext object with secure default settings. 3308 3309 - Issue #19727: os.utime(..., None) is now potentially more precise 3310 under Windows. 3311 3312 - Issue #17201: ZIP64 extensions now are enabled by default. Patch by 3313 William Mallard. 3314 3315 - Issue #19292: Add SSLContext.load_default_certs() to load default root CA 3316 certificates from default stores or system stores. By default the method 3317 loads CA certs for authentication of server certs. 3318 3319 - Issue #19673: Add pathlib to the stdlib as a provisional module (PEP 428). 3320 3321 - Issue #16596: pdb in a generator now properly skips over yield and 3322 yield from rather than stepping out of the generator into its 3323 caller. (This is essential for stepping through asyncio coroutines.) 3324 3325 - Issue #17916: Added dis.Bytecode.from_traceback() and 3326 dis.Bytecode.current_offset to easily display "current instruction" 3327 markers in the new disassembly API (Patch by Claudiu Popa). 3328 3329 - Issue #19552: venv now supports bootstrapping pip into virtual environments 3330 3331 - Issue #17134: Finalize interface to Windows' certificate store. Cert and 3332 CRL enumeration are now two functions. enum_certificates() also returns 3333 purpose flags as set of OIDs. 3334 3335 - Issue #19555: Restore sysconfig.get_config_var('SO'), (and the distutils 3336 equivalent) with a DeprecationWarning pointing people at $EXT_SUFFIX. 3337 3338 - Issue #8813: Add SSLContext.verify_flags to change the verification flags 3339 of the context in order to enable certification revocation list (CRL) 3340 checks or strict X509 rules. 3341 3342 - Issue #18294: Fix the zlib module to make it 64-bit safe. 3343 3344 - Issue #19682: Fix compatibility issue with old version of OpenSSL that 3345 was introduced by Issue #18379. 3346 3347 - Issue #14455: plistlib now supports binary plists and has an updated API. 3348 3349 - Issue #19633: Fixed writing not compressed 16- and 32-bit wave files on 3350 big-endian platforms. 3351 3352 - Issue #18379: SSLSocket.getpeercert() returns CA issuer AIA fields, OCSP 3353 and CRL distribution points. 3354 3355 - Issue #18138: Implement cadata argument of SSLContext.load_verify_location() 3356 to load CA certificates and CRL from memory. It supports PEM and DER 3357 encoded strings. 3358 3359 - Issue #18775: Add name and block_size attribute to HMAC object. They now 3360 provide the same API elements as non-keyed cryptographic hash functions. 3361 3362 - Issue #17276: MD5 as default digestmod for HMAC is deprecated. The HMAC 3363 module supports digestmod names, e.g. hmac.HMAC('sha1'). 3364 3365 - Issue #19449: in csv's writerow, handle non-string keys when generating the 3366 error message that certain keys are not in the 'fieldnames' list. 3367 3368 - Issue #13633: Added a new convert_charrefs keyword arg to HTMLParser that, 3369 when True, automatically converts all character references. 3370 3371 - Issue #2927: Added the unescape() function to the html module. 3372 3373 - Issue #8402: Added the escape() function to the glob module. 3374 3375 - Issue #17618: Add Base85 and Ascii85 encoding/decoding to the base64 module. 3376 3377 - Issue #19634: time.strftime("%y") now raises a ValueError on AIX when given a 3378 year before 1900. 3379 3380 - Fix test.support.bind_port() to not cause an error when Python was compiled 3381 on a system with SO_REUSEPORT defined in the headers but run on a system 3382 with an OS kernel that does not support that reasonably new socket option. 3383 3384 - Fix compilation error under gcc of the ctypes module bundled libffi for arm. 3385 3386 - Issue #19448: Add private API to SSL module to lookup ASN.1 objects by OID, 3387 NID, short name and long name. 3388 3389 - Issue #19282: dbm.open now supports the context management protocol. (Initial 3390 patch by Claudiu Popa) 3391 3392 - Issue #8311: Added support for writing any bytes-like objects in the aifc, 3393 sunau, and wave modules. 3394 3395 - Issue #5202: Added support for unseekable files in the wave module. 3396 3397 - Issue #19544 and Issue #1180: Restore global option to ignore 3398 ~/.pydistutils.cfg in Distutils, accidentally removed in backout of 3399 distutils2 changes. 3400 3401 - Issue #19523: Closed FileHandler leak which occurred when delay was set. 3402 3403 - Issue #19544 and Issue #6516: Restore support for --user and --group 3404 parameters to sdist command accidentally rolled back as part of the 3405 distutils2 rollback. 3406 3407 - Issue #13674: Prevented time.strftime from crashing on Windows when given 3408 a year before 1900 and a format of %y. 3409 3410 - Issue #19406: implementation of the ensurepip module (part of PEP 453). 3411 Patch by Donald Stufft and Nick Coghlan. 3412 3413 - Issue #19544 and Issue #6286: Restore use of urllib over http allowing use 3414 of http_proxy for Distutils upload command, a feature accidentally lost 3415 in the rollback of distutils2. 3416 3417 - Issue #19544 and Issue #7457: Restore the read_pkg_file method to 3418 distutils.dist.DistributionMetadata accidentally removed in the undo of 3419 distutils2. 3420 3421 - Issue #16685: Added support for any bytes-like objects in the audioop module. 3422 Removed support for strings. 3423 3424 - Issue #7171: Add Windows implementation of ``inet_ntop`` and ``inet_pton`` 3425 to socket module. Patch by Atsuo Ishimoto. 3426 3427 - Issue #19261: Added support for writing 24-bit samples in the sunau module. 3428 3429 - Issue #1097797: Added CP273 encoding, used on IBM mainframes in 3430 Germany and Austria. Mapping provided by Michael Bierenfeld. 3431 3432 - Issue #1575020: Fixed support of 24-bit wave files on big-endian platforms. 3433 3434 - Issue #19378: Fixed a number of cases in the dis module where the new 3435 "file" parameter was not being honoured correctly 3436 3437 - Issue #19378: Removed the "dis.Bytecode.show_info" method 3438 3439 - Issue #19378: Renamed the "dis.Bytecode.display_code" method to 3440 "dis.Bytecode.dis" and converted it to returning a string rather than 3441 printing output. 3442 3443 - Issue #19378: the "line_offset" parameter in the new "dis.get_instructions" 3444 API has been renamed to "first_line" (and the default value and usage 3445 changed accordingly). This should reduce confusion with the more common use 3446 of "offset" in the dis docs to refer to bytecode offsets. 3447 3448 - Issue #18678: Corrected spwd struct member names in spwd module: 3449 sp_nam->sp_namp, and sp_pwd->sp_pwdp. The old names are kept as extra 3450 structseq members, for backward compatibility. 3451 3452 - Issue #6157: Fixed tkinter.Text.debug(). tkinter.Text.bbox() now raises 3453 TypeError instead of TclError on wrong number of arguments. Original patch 3454 by Guilherme Polo. 3455 3456 - Issue #10197: Rework subprocess.get[status]output to use subprocess 3457 functionality and thus to work on Windows. Patch by Nick Coghlan 3458 3459 - Issue #6160: The bbox() method of tkinter.Spinbox now returns a tuple of 3460 integers instead of a string. Based on patch by Guilherme Polo. 3461 3462 - Issue #19403: contextlib.redirect_stdout is now reentrant 3463 3464 - Issue #19286: Directories in ``package_data`` are no longer added to 3465 the filelist, preventing failure outlined in the ticket. 3466 3467 - Issue #19480: HTMLParser now accepts all valid start-tag names as defined 3468 by the HTML5 standard. 3469 3470 - Issue #15114: The html.parser module now raises a DeprecationWarning when the 3471 strict argument of HTMLParser or the HTMLParser.error method are used. 3472 3473 - Issue #19410: Undo the special-casing removal of '' for 3474 importlib.machinery.FileFinder. 3475 3476 - Issue #19424: Fix the warnings module to accept filename containing surrogate 3477 characters. 3478 3479 - Issue #19435: Fix directory traversal attack on CGIHttpRequestHandler. 3480 3481 - Issue #19227: Remove pthread_atfork() handler. The handler was added to 3482 solve #18747 but has caused issues. 3483 3484 - Issue #19420: Fix reference leak in module initialization code of 3485 _hashopenssl.c 3486 3487 - Issue #19329: Optimized compiling charsets in regular expressions. 3488 3489 - Issue #19227: Try to fix deadlocks caused by re-seeding then OpenSSL 3490 pseudo-random number generator on fork(). 3491 3492 - Issue #16037: HTTPMessage.readheaders() raises an HTTPException when more than 3493 100 headers are read. Adapted from patch by Jyrki Pulliainen. 3494 3495 - Issue #16040: CVE-2013-1752: nntplib: Limit maximum line lengths to 2048 to 3496 prevent readline() calls from consuming too much memory. Patch by Jyrki 3497 Pulliainen. 3498 3499 - Issue #16041: CVE-2013-1752: poplib: Limit maximum line lengths to 2048 to 3500 prevent readline() calls from consuming too much memory. Patch by Jyrki 3501 Pulliainen. 3502 3503 - Issue #17997: Change behavior of ``ssl.match_hostname()`` to follow RFC 6125, 3504 for security reasons. It now doesn't match multiple wildcards nor wildcards 3505 inside IDN fragments. 3506 3507 - Issue #16039: CVE-2013-1752: Change use of readline in imaplib module to limit 3508 line length. Patch by Emil Lind. 3509 3510 - Issue #19330: the unnecessary wrapper functions have been removed from the 3511 implementations of the new contextlib.redirect_stdout and 3512 contextlib.suppress context managers, which also ensures they provide 3513 reasonable help() output on instances 3514 3515 - Issue #19393: Fix symtable.symtable function to not be confused when there are 3516 functions or classes named "top". 3517 3518 - Issue #18685: Restore re performance to pre-PEP 393 levels. 3519 3520 - Issue #19339: telnetlib module is now using time.monotonic() when available 3521 to compute timeout. 3522 3523 - Issue #19399: fix sporadic test_subprocess failure. 3524 3525 - Issue #13234: Fix os.listdir to work with extended paths on Windows. 3526 Patch by Santoso Wijaya. 3527 3528 - Issue #19375: The site module adding a "site-python" directory to sys.path, 3529 if it exists, is now deprecated. 3530 3531 - Issue #19379: Lazily import linecache in the warnings module, to make 3532 startup with warnings faster until a warning gets printed. 3533 3534 - Issue #19288: Fixed the "in" operator of dbm.gnu databases for string 3535 argument. Original patch by Arfrever Frehtes Taifersar Arahesis. 3536 3537 - Issue #19287: Fixed the "in" operator of dbm.ndbm databases for string 3538 argument. Original patch by Arfrever Frehtes Taifersar Arahesis. 3539 3540 - Issue #19327: Fixed the working of regular expressions with too big charset. 3541 3542 - Issue #17400: New 'is_global' attribute for ipaddress to tell if an address 3543 is allocated by IANA for global or private networks. 3544 3545 - Issue #19350: Increasing the test coverage of macurl2path. Patch by Colin 3546 Williams. 3547 3548 - Issue #19365: Optimized the parsing of long replacement string in re.sub*() 3549 functions. 3550 3551 - Issue #19352: Fix unittest discovery when a module can be reached 3552 through several paths (e.g. under Debian/Ubuntu with virtualenv). 3553 3554 - Issue #15207: Fix mimetypes to read from correct part of Windows registry 3555 Original patch by Dave Chambers 3556 3557 - Issue #16595: Add prlimit() to resource module. 3558 3559 - Issue #19324: Expose Linux-specific constants in resource module. 3560 3561 - Load SSL's error strings in hashlib. 3562 3563 - Issue #18527: Upgrade internal copy of zlib to 1.2.8. 3564 3565 - Issue #19274: Add a filterfunc parameter to PyZipFile.writepy. 3566 3567 - Issue #8964: fix platform._sys_version to handle IronPython 2.6+. 3568 Patch by Martin Matusiak. 3569 3570 - Issue #19413: Restore pre-3.3 reload() semantics of re-finding modules. 3571 3572 - Issue #18958: Improve error message for json.load(s) while passing a string 3573 that starts with a UTF-8 BOM. 3574 3575 - Issue #19307: Improve error message for json.load(s) while passing objects 3576 of the wrong type. 3577 3578 - Issue #16038: CVE-2013-1752: ftplib: Limit amount of data read by 3579 limiting the call to readline(). Original patch by Michał 3580 Jastrzębski and Giampaolo Rodola. 3581 3582 - Issue #17087: Improved the repr for regular expression match objects. 3583 3584 Tests 3585 ----- 3586 3587 - Issue #19664: test_userdict's repr test no longer depends on the order 3588 of dict elements. 3589 3590 - Issue #19440: Clean up test_capi by removing an unnecessary __future__ 3591 import, converting from test_main to unittest.main, and running the 3592 _testcapi module tests as subTests of a unittest TestCase method. 3593 3594 - Issue #19378: the main dis module tests are now run with both stdout 3595 redirection *and* passing an explicit file parameter 3596 3597 - Issue #19378: removed the not-actually-helpful assertInstructionMatches 3598 and assertBytecodeExactlyMatches helpers from bytecode_helper 3599 3600 - Issue #18702: All skipped tests now reported as skipped. 3601 3602 - Issue #19439: interpreter embedding tests are now executed on Windows 3603 (Patch by Zachary Ware) 3604 3605 - Issue #19085: Added basic tests for all tkinter widget options. 3606 3607 - Issue #19384: Fix test_py_compile for root user, patch by Claudiu Popa. 3608 3609 Documentation 3610 ------------- 3611 3612 - Issue #18326: Clarify that list.sort's arguments are keyword-only. Also, 3613 attempt to reduce confusion in the glossary by not saying there are 3614 different "types" of arguments and parameters. 3615 3616 Build 3617 ----- 3618 3619 - Issue #19358: "make clinic" now runs the Argument Clinic preprocessor 3620 over all CPython source files. 3621 3622 - Update SQLite to 3.8.1, xz to 5.0.5, and Tcl/Tk to 8.6.1 on Windows. 3623 3624 - Issue #16632: Enable DEP and ASLR on Windows. 3625 3626 - Issue #17791: Drop PREFIX and EXEC_PREFIX definitions from PC/pyconfig.h 3627 3628 - Add workaround for VS 2010 nmake clean issue. VS 2010 doesn't set up PATH 3629 for nmake.exe correctly. 3630 3631 - Issue #19550: Implement Windows installer changes of PEP 453 (ensurepip). 3632 3633 - Issue #19520: Fix compiler warning in the _sha3 module on 32bit Windows. 3634 3635 - Issue #19356: Avoid using a C variabled named "_self", it's a reserved 3636 word in some C compilers. 3637 3638 - Issue #15792: Correct build options on Win64. Patch by Jeremy Kloth. 3639 3640 - Issue #19373: Apply upstream change to Tk 8.5.15 fixing OS X 10.9 3641 screen refresh problem for OS X installer build. 3642 3643 - Issue #19649: On OS X, the same set of file names are now installed 3644 in bin directories for all configurations: non-framework vs framework, 3645 and single arch vs universal builds. pythonx.y-32 is now always 3646 installed for 64-bit/32-bit universal builds. The obsolete and 3647 undocumented pythonw* symlinks are no longer installed anywhere. 3648 3649 - Issue #19553: PEP 453 - "make install" and "make altinstall" now install or 3650 upgrade pip by default, using the bundled pip provided by the new ensurepip 3651 module. A new configure option, --with-ensurepip[=upgrade|install|no], is 3652 available to override the default ensurepip "--upgrade" option. The option 3653 can also be set with "make [alt]install ENSUREPIP=[upgrade|install|no]". 3654 3655 - Issue #19551: PEP 453 - the OS X installer now installs pip by default. 3656 3657 - Update third-party libraries for OS X installers: xz 5.0.3 -> 5.0.5, 3658 SQLite 3.7.13 -> 3.8.1 3659 3660 - Issue #15663: Revert OS X installer built-in Tcl/Tk support for 3.4.0b1. 3661 Some third-party projects, such as Matplotlib and PIL/Pillow, 3662 depended on being able to build with Tcl and Tk frameworks in 3663 /Library/Frameworks. 3664 3665 Tools/Demos 3666 ----------- 3667 3668 - Issue #19730: Argument Clinic now supports all the existing PyArg 3669 "format units" as legacy converters, as well as two new features: 3670 "self converters" and the "version" directive. 3671 3672 - Issue #19552: pyvenv now bootstraps pip into virtual environments by 3673 default (pass --without-pip to request the old behaviour) 3674 3675 - Issue #19390: Argument Clinic no longer accepts malformed Python 3676 and C ids. 3677 3678 3679 What's New in Python 3.4.0 Alpha 4? 3680 =================================== 3681 3682 Release date: 2013-10-20 3683 3684 Core and Builtins 3685 ----------------- 3686 3687 - Issue #19301: Give classes and functions that are explicitly marked global a 3688 global qualname. 3689 3690 - Issue #19279: UTF-7 decoder no longer produces illegal strings. 3691 3692 - Issue #16612: Add "Argument Clinic", a compile-time preprocessor for 3693 C files to generate argument parsing code. (See PEP 436.) 3694 3695 - Issue #18810: Shift stat calls in importlib.machinery.FileFinder such that 3696 the code is optimistic that if something exists in a directory named exactly 3697 like the possible package being searched for that it's in actuality a 3698 directory. 3699 3700 - Issue #18416: importlib.machinery.PathFinder now treats '' as the cwd and 3701 importlib.machinery.FileFinder no longer special-cases '' to '.'. This leads 3702 to modules imported from cwd to now possess an absolute file path for 3703 __file__ (this does not affect modules specified by path on the CLI but it 3704 does affect -m/runpy). It also allows FileFinder to be more consistent by not 3705 having an edge case. 3706 3707 - Issue #4555: All exported C symbols are now prefixed with either 3708 "Py" or "_Py". 3709 3710 - Issue #19219: Speed up marshal.loads(), and make pyc files slightly 3711 (5% to 10%) smaller. 3712 3713 - Issue #19221: Upgrade Unicode database to version 6.3.0. 3714 3715 - Issue #16742: The result of the C callback PyOS_ReadlineFunctionPointer must 3716 now be a string allocated by PyMem_RawMalloc() or PyMem_RawRealloc() (or NULL 3717 if an error occurred), instead of a string allocated by PyMem_Malloc() or 3718 PyMem_Realloc(). 3719 3720 - Issue #19199: Remove ``PyThreadState.tick_counter`` field 3721 3722 - Fix macro expansion of _PyErr_OCCURRED(), and make sure to use it in at 3723 least one place so as to avoid regressions. 3724 3725 - Issue #19087: Improve bytearray allocation in order to allow cheap popping 3726 of data at the front (slice deletion). 3727 3728 - Issue #19014: memoryview.cast() is now allowed on zero-length views. 3729 3730 - Issue #18690: memoryview is now automatically registered with 3731 collections.abc.Sequence 3732 3733 - Issue #19078: memoryview now correctly supports the reversed builtin 3734 (Patch by Claudiu Popa) 3735 3736 Library 3737 ------- 3738 3739 - Issue #17457: unittest test discovery now works with namespace packages. 3740 Patch by Claudiu Popa. 3741 3742 - Issue #18235: Fix the sysconfig variables LDSHARED and BLDSHARED under AIX. 3743 Patch by David Edelsohn. 3744 3745 - Issue #18606: Add the new "statistics" module (PEP 450). Contributed 3746 by Steven D'Aprano. 3747 3748 - Issue #12866: The audioop module now supports 24-bit samples. 3749 3750 - Issue #19254: Provide an optimized Python implementation of pbkdf2_hmac. 3751 3752 - Issues #19201, Issue #19222, Issue #19223: Add "x" mode (exclusive creation) 3753 in opening file to bz2, gzip and lzma modules. Patches by Tim Heaney and 3754 Vajrasky Kok. 3755 3756 - Fix a reference count leak in _sre. 3757 3758 - Issue #19262: Initial check in of the 'asyncio' package (a.k.a. Tulip, 3759 a.k.a. PEP 3156). There are no docs yet, and the PEP is slightly 3760 out of date with the code. This module will have *provisional* status 3761 in Python 3.4. 3762 3763 - Issue #19276: Fixed the wave module on 64-bit big-endian platforms. 3764 3765 - Issue #19266: Rename the new-in-3.4 ``contextlib.ignore`` context manager 3766 to ``contextlib.suppress`` in order to be more consistent with existing 3767 descriptions of that operation elsewhere in the language and standard 3768 library documentation (Patch by Zero Piraeus). 3769 3770 - Issue #18891: Completed the new email package (provisional) API additions 3771 by adding new classes EmailMessage, MIMEPart, and ContentManager. 3772 3773 - Issue #18281: Unused stat constants removed from `tarfile`. 3774 3775 - Issue #18999: Multiprocessing now supports 'contexts' with the same API 3776 as the module, but bound to specified start methods. 3777 3778 - Issue #18468: The re.split, re.findall, and re.sub functions and the group() 3779 and groups() methods of match object now always return a string or a bytes 3780 object. 3781 3782 - Issue #18725: The textwrap module now supports truncating multiline text. 3783 3784 - Issue #18776: atexit callbacks now display their full traceback when they 3785 raise an exception. 3786 3787 - Issue #17827: Add the missing documentation for ``codecs.encode`` and 3788 ``codecs.decode``. 3789 3790 - Issue #19218: Rename collections.abc to _collections_abc in order to 3791 speed up interpreter start. 3792 3793 - Issue #18582: Add 'pbkdf2_hmac' to the hashlib module. It implements PKCS#5 3794 password-based key derivation functions with HMAC as pseudorandom function. 3795 3796 - Issue #19131: The aifc module now correctly reads and writes sampwidth of 3797 compressed streams. 3798 3799 - Issue #19209: Remove import of copyreg from the os module to speed up 3800 interpreter startup. stat_result and statvfs_result are now hard-coded to 3801 reside in the os module. 3802 3803 - Issue #19205: Don't import the 're' module in site and sysconfig module to 3804 speed up interpreter start. 3805 3806 - Issue #9548: Add a minimal "_bootlocale" module that is imported by the 3807 _io module instead of the full locale module. 3808 3809 - Issue #18764: Remove the 'print' alias for the PDB 'p' command so that it no 3810 longer shadows the print function. 3811 3812 - Issue #19158: A rare race in BoundedSemaphore could allow .release() too 3813 often. 3814 3815 - Issue #15805: Add contextlib.redirect_stdout(). 3816 3817 - Issue #18716: Deprecate the formatter module. 3818 3819 - Issue #10712: 2to3 has a new "asserts" fixer that replaces deprecated names 3820 of unittest methods (e.g. failUnlessEqual -> assertEqual). 3821 3822 - Issue #18037: 2to3 now escapes ``'\u'`` and ``'\U'`` in native strings. 3823 3824 - Issue #17839: base64.decodebytes and base64.encodebytes now accept any 3825 object that exports a 1 dimensional array of bytes (this means the same 3826 is now also true for base64_codec) 3827 3828 - Issue #19132: The pprint module now supports compact mode. 3829 3830 - Issue #19137: The pprint module now correctly formats instances of set and 3831 frozenset subclasses. 3832 3833 - Issue #10042: functools.total_ordering now correctly handles 3834 NotImplemented being returned by the underlying comparison function (Patch 3835 by Katie Miller) 3836 3837 - Issue #19092: contextlib.ExitStack now correctly reraises exceptions 3838 from the __exit__ callbacks of inner context managers (Patch by Hrvoje 3839 Nikšić) 3840 3841 - Issue #12641: Avoid passing "-mno-cygwin" to the mingw32 compiler, except 3842 when necessary. Patch by Oscar Benjamin. 3843 3844 - Issue #5845: In site.py, only load readline history from ~/.python_history 3845 if no history has been read already. This avoids double writes to the 3846 history file at shutdown. 3847 3848 - Properly initialize all fields of a SSL object after allocation. 3849 3850 - Issue #19095: SSLSocket.getpeercert() now raises ValueError when the 3851 SSL handshake hasn't been done. 3852 3853 - Issue #4366: Fix building extensions on all platforms when --enable-shared 3854 is used. 3855 3856 - Issue #19030: Fixed `inspect.getmembers` and `inspect.classify_class_attrs` 3857 to attempt activating descriptors before falling back to a __dict__ search 3858 for faulty descriptors. `inspect.classify_class_attrs` no longer returns 3859 Attributes whose home class is None. 3860 3861 C API 3862 ----- 3863 3864 - Issue #1772673: The type of `char*` arguments now changed to `const char*`. 3865 3866 - Issue #16129: Added a `Py_SetStandardStreamEncoding` pre-initialization API 3867 to allow embedding applications like Blender to force a particular 3868 encoding and error handler for the standard IO streams (initial patch by 3869 Bastien Montagne) 3870 3871 Tests 3872 ----- 3873 3874 - Issue #19275: Fix test_site on AMD64 Snow Leopard 3875 3876 - Issue #14407: Fix unittest test discovery in test_concurrent_futures. 3877 3878 - Issue #18919: Unified and extended tests for audio modules: aifc, sunau and 3879 wave. 3880 3881 - Issue #18714: Added tests for ``pdb.find_function()``. 3882 3883 Documentation 3884 ------------- 3885 3886 - Issue #18758: Fixed and improved cross-references. 3887 3888 - Issue #18972: Modernize email examples and use the argparse module in them. 3889 3890 Build 3891 ----- 3892 3893 - Issue #19130: Correct PCbuild/readme.txt, Python 3.3 and 3.4 require VS 2010. 3894 3895 - Issue #15663: Update OS X 10.6+ installer to use Tcl/Tk 8.5.15. 3896 3897 - Issue #14499: Fix several problems with OS X universal build support: 3898 1. ppc arch detection for extension module builds broke with Xcode 5 3899 2. ppc arch detection in configure did not work on OS X 10.4 3900 3. -sysroot and -arch flags were unnecessarily duplicated 3901 4. there was no obvious way to configure an intel-32 only build. 3902 3903 - Issue #19019: Change the OS X installer build script to use CFLAGS instead 3904 of OPT for special build options. By setting OPT, some compiler-specific 3905 options like -fwrapv were overridden and thus not used, which could result 3906 in broken interpreters when building with clang. 3907 3908 3909 What's New in Python 3.4.0 Alpha 3? 3910 =================================== 3911 3912 Release date: 2013-09-29 3913 3914 Core and Builtins 3915 ----------------- 3916 3917 - Issue #18818: The "encodingname" part of PYTHONIOENCODING is now optional. 3918 3919 - Issue #19098: Prevent overflow in the compiler when the recursion limit is set 3920 absurdly high. 3921 3922 Library 3923 ------- 3924 3925 - Issue #18929: `inspect.classify_class_attrs()` now correctly finds class 3926 attributes returned by `dir()` that are located in the metaclass. 3927 3928 - Issue #18950: Fix miscellaneous bugs in the sunau module. 3929 Au_read.readframes() now updates current file position and reads correct 3930 number of frames from multichannel stream. Au_write.writeframesraw() now 3931 correctly updates current file position. Au_read.getnframes() now returns an 3932 integer (as in Python 2). Au_read and Au_write now correctly works with file 3933 object if start file position is not a zero. 3934 3935 - Issue #18594: The fast path for collections.Counter() was never taken 3936 due to an over-restrictive type check. 3937 3938 - Issue #19053: ZipExtFile.read1() with non-zero argument no more returns empty 3939 bytes until end of data. 3940 3941 - logging: added support for Unix domain sockets to SocketHandler and 3942 DatagramHandler. 3943 3944 - Issue #18996: TestCase.assertEqual() now more cleverly shorten differing 3945 strings in error report. 3946 3947 - Issue #19034: repr() for tkinter.Tcl_Obj now exposes string reperesentation. 3948 3949 - Issue #18978: ``urllib.request.Request`` now allows the method to be 3950 indicated on the class and no longer sets it to None in ``__init__``. 3951 3952 - Issue #18626: the inspect module now offers a basic command line 3953 introspection interface (Initial patch by Claudiu Popa) 3954 3955 - Issue #3015: Fixed tkinter with wantobject=False. Any Tcl command call 3956 returned empty string. 3957 3958 - Issue #19037: The mailbox module now makes all changes to maildir files 3959 before moving them into place, to avoid race conditions with other programs 3960 that may be accessing the maildir directory. 3961 3962 - Issue #14984: On POSIX systems, when netrc is called without a filename 3963 argument (and therefore is reading the user's $HOME/.netrc file), it now 3964 enforces the same security rules as typical ftp clients: the .netrc file must 3965 be owned by the user that owns the process and must not be readable by any 3966 other user. 3967 3968 - Issue #18873: The tokenize module now detects Python source code encoding 3969 only in comment lines. 3970 3971 - Issue #17764: Enable http.server to bind to a user specified network 3972 interface. Patch contributed by Malte Swart. 3973 3974 - Issue #18937: Add an assertLogs() context manager to unittest.TestCase 3975 to ensure that a block of code emits a message using the logging module. 3976 3977 - Issue #17324: Fix http.server's request handling case on trailing '/'. Patch 3978 contributed by Vajrasky Kok. 3979 3980 - Issue #19018: The heapq.merge() function no longer suppresses IndexError 3981 in the underlying iterables. 3982 3983 - Issue #18784: The uuid module no longer attempts to load libc via ctypes.CDLL 3984 if all the necessary functions have already been found in libuuid. Patch by 3985 Evgeny Sologubov. 3986 3987 - The :envvar:`PYTHONFAULTHANDLER` environment variable now only enables the 3988 faulthandler module if the variable is non-empty. Same behaviour than other 3989 variables like :envvar:`PYTHONDONTWRITEBYTECODE`. 3990 3991 - Issue #1565525: New function ``traceback.clear_frames`` will clear 3992 the local variables of all the stack frames referenced by a traceback 3993 object. 3994 3995 Tests 3996 ----- 3997 3998 - Issue #18952: Fix regression in support data downloads introduced when 3999 test.support was converted to a package. Regression noticed by Zachary 4000 Ware. 4001 4002 IDLE 4003 ---- 4004 4005 - Issue #18873: IDLE now detects Python source code encoding only in comment 4006 lines. 4007 4008 - Issue #18988: The "Tab" key now works when a word is already autocompleted. 4009 4010 Documentation 4011 ------------- 4012 4013 - Issue #17003: Unified the size argument names in the io module with common 4014 practice. 4015 4016 Build 4017 ----- 4018 4019 - Issue #18596: Support the use of address sanity checking in recent versions 4020 of clang and GCC by appropriately marking known false alarms in the small 4021 object allocator. Patch contributed by Dhiru Kholia. 4022 4023 Tools/Demos 4024 ----------- 4025 4026 - Issue #18873: 2to3 and the findnocoding.py script now detect Python source 4027 code encoding only in comment lines. 4028 4029 4030 What's New in Python 3.4.0 Alpha 2? 4031 =================================== 4032 4033 Release date: 2013-09-09 4034 4035 Core and Builtins 4036 ----------------- 4037 4038 - Issue #18942: sys._debugmallocstats() output was damaged on Windows. 4039 4040 - Issue #18571: Implementation of the PEP 446: file descriptors and file 4041 handles are now created non-inheritable; add functions 4042 os.get/set_inheritable(), os.get/set_handle_inheritable() and 4043 socket.socket.get/set_inheritable(). 4044 4045 - Issue #11619: The parser and the import machinery do not encode Unicode 4046 filenames anymore on Windows. 4047 4048 - Issue #18808: Non-daemon threads are now automatically joined when 4049 a sub-interpreter is shutdown (it would previously dump a fatal error). 4050 4051 - Remove support for compiling on systems without getcwd(). 4052 4053 - Issue #18774: Remove last bits of GNU PTH thread code and thread_pth.h. 4054 4055 - Issue #18771: Add optimization to set object lookups to reduce the cost 4056 of hash collisions. The core idea is to inspect a second key/hash pair 4057 for each cache line retrieved. 4058 4059 - Issue #16105: When a signal handler fails to write to the file descriptor 4060 registered with ``signal.set_wakeup_fd()``, report an exception instead 4061 of ignoring the error. 4062 4063 - Issue #18722: Remove uses of the "register" keyword in C code. 4064 4065 - Issue #18667: Add missing "HAVE_FCHOWNAT" symbol to posix._have_functions. 4066 4067 - Issue #16499: Add command line option for isolated mode. 4068 4069 - Issue #15301: Parsing fd, uid, and gid parameters for builtins 4070 in Modules/posixmodule.c is now far more robust. 4071 4072 - Issue #18368: PyOS_StdioReadline() no longer leaks memory when realloc() 4073 fail. 4074 4075 - Issue #17934: Add a clear() method to frame objects, to help clean up 4076 expensive details (local variables) and break reference cycles. 4077 4078 - Issue #18780: %-formatting codes %d, %i, and %u now treat int-subclasses 4079 as int (displays value of int-subclass instead of str(int-subclass) ). 4080 4081 Library 4082 ------- 4083 4084 - Issue #18808: Thread.join() now waits for the underlying thread state to 4085 be destroyed before returning. This prevents unpredictable aborts in 4086 Py_EndInterpreter() when some non-daemon threads are still running. 4087 4088 - Issue #18458: Prevent crashes with newer versions of libedit. Its readline 4089 emulation has changed from 0-based indexing to 1-based like gnu readline. 4090 4091 - Issue #18852: Handle case of ``readline.__doc__`` being ``None`` in the new 4092 readline activation code in ``site.py``. 4093 4094 - Issue #18672: Fixed format specifiers for Py_ssize_t in debugging output in 4095 the _sre module. 4096 4097 - Issue #18830: inspect.getclasstree() no longer produces duplicate entries even 4098 when input list contains duplicates. 4099 4100 - Issue #18878: sunau.open now supports the context management protocol. Based on 4101 patches by Claudiu Popa and R. David Murray. 4102 4103 - Issue #18909: Fix _tkinter.tkapp.interpaddr() on Windows 64-bit, don't cast 4104 64-bit pointer to long (32 bits). 4105 4106 - Issue #18876: The FileIO.mode attribute now better reflects the actual mode 4107 under which the file was opened. Patch by Erik Bray. 4108 4109 - Issue #16853: Add new selectors module. 4110 4111 - Issue #18882: Add threading.main_thread() function. 4112 4113 - Issue #18901: The sunau getparams method now returns a namedtuple rather than 4114 a plain tuple. Patch by Claudiu Popa. 4115 4116 - Issue #17487: The result of the wave getparams method now is pickleable again. 4117 Patch by Claudiu Popa. 4118 4119 - Issue #18756: os.urandom() now uses a lazily-opened persistent file 4120 descriptor, so as to avoid using many file descriptors when run in 4121 parallel from multiple threads. 4122 4123 - Issue #18418: After fork(), reinit all threads states, not only active ones. 4124 Patch by A. Jesse Jiryu Davis. 4125 4126 - Issue #17974: Switch unittest from using getopt to using argparse. 4127 4128 - Issue #11798: TestSuite now drops references to own tests after execution. 4129 4130 - Issue #16611: http.cookie now correctly parses the 'secure' and 'httponly' 4131 cookie flags. 4132 4133 - Issue #11973: Fix a problem in kevent. The flags and fflags fields are now 4134 properly handled as unsigned. 4135 4136 - Issue #18807: ``pyvenv`` now takes a --copies argument allowing copies 4137 instead of symlinks even where symlinks are available and the default. 4138 4139 - Issue #18538: ``python -m dis`` now uses argparse for argument processing. 4140 Patch by Michele Orrù. 4141 4142 - Issue #18394: Close cgi.FieldStorage's optional file. 4143 4144 - Issue #17702: On error, os.environb now suppresses the exception context 4145 when raising a new KeyError with the original key. 4146 4147 - Issue #16809: Fixed some tkinter incompabilities with Tcl/Tk 8.6. 4148 4149 - Issue #16809: Tkinter's splitlist() and split() methods now accept Tcl_Obj 4150 argument. 4151 4152 - Issue #18324: set_payload now correctly handles binary input. This also 4153 supersedes the previous fixes for #14360, #1717, and #16564. 4154 4155 - Issue #18794: Add a fileno() method and a closed attribute to select.devpoll 4156 objects. 4157 4158 - Issue #17119: Fixed integer overflows when processing large strings and tuples 4159 in the tkinter module. 4160 4161 - Issue #18747: Re-seed OpenSSL's pseudo-random number generator after fork. 4162 A pthread_atfork() parent handler is used to seed the PRNG with pid, time 4163 and some stack data. 4164 4165 - Issue #8865: Concurrent invocation of select.poll.poll() now raises a 4166 RuntimeError exception. Patch by Christian Schubert. 4167 4168 - Issue #18777: The ssl module now uses the new CRYPTO_THREADID API of 4169 OpenSSL 1.0.0+ instead of the deprecated CRYPTO id callback function. 4170 4171 - Issue #18768: Correct doc string of RAND_edg(). Patch by Vajrasky Kok. 4172 4173 - Issue #18178: Fix ctypes on BSD. dlmalloc.c was compiled twice which broke 4174 malloc weak symbols. 4175 4176 - Issue #18709: Fix CVE-2013-4238. The SSL module now handles NULL bytes 4177 inside subjectAltName correctly. Formerly the module has used OpenSSL's 4178 GENERAL_NAME_print() function to get the string representation of ASN.1 4179 strings for ``rfc822Name`` (email), ``dNSName`` (DNS) and 4180 ``uniformResourceIdentifier`` (URI). 4181 4182 - Issue #18701: Remove support of old CPython versions (<3.0) from C code. 4183 4184 - Issue #18756: Improve error reporting in os.urandom() when the failure 4185 is due to something else than /dev/urandom not existing (for example, 4186 exhausting the file descriptor limit). 4187 4188 - Issue #18673: Add O_TMPFILE to os module. O_TMPFILE requires Linux kernel 4189 3.11 or newer. It's only defined on system with 3.11 uapi headers, too. 4190 4191 - Issue #18532: Change the builtin hash algorithms' names to lower case names 4192 as promised by hashlib's documentation. 4193 4194 - Issue #8713: add new spwan and forkserver start methods, and new functions 4195 get_all_start_methods, get_start_method, and set_start_method, to 4196 multiprocessing. 4197 4198 - Issue #18405: Improve the entropy of crypt.mksalt(). 4199 4200 - Issue #12015: The tempfile module now uses a suffix of 8 random characters 4201 instead of 6, to reduce the risk of filename collision. The entropy was 4202 reduced when uppercase letters were removed from the charset used to generate 4203 random characters. 4204 4205 - Issue #18585: Add :func:`textwrap.shorten` to collapse and truncate a 4206 piece of text to a given length. 4207 4208 - Issue #18598: Tweak exception message for importlib.import_module() to 4209 include the module name when a key argument is missing. 4210 4211 - Issue #19151: Fix docstring and use of _get_supported_file_loaders() to 4212 reflect 2-tuples. 4213 4214 - Issue #19152: Add ExtensionFileLoader.get_filename(). 4215 4216 - Issue #18676: Change 'positive' to 'non-negative' in queue.py put and get 4217 docstrings and ValueError messages. Patch by Zhongyue Luo 4218 4219 - Fix refcounting issue with extension types in tkinter. 4220 4221 - Issue #8112: xlmrpc.server's DocXMLRPCServer server no longer raises an error 4222 if methods have annotations; it now correctly displays the annotations. 4223 4224 - Issue #18600: Added policy argument to email.message.Message.as_string, 4225 and as_bytes and __bytes__ methods to Message. 4226 4227 - Issue #18671: Output more information when logging exceptions occur. 4228 4229 - Issue #18621: Prevent the site module's patched builtins from keeping 4230 too many references alive for too long. 4231 4232 - Issue #4885: Add weakref support to mmap objects. Patch by Valerie Lambert. 4233 4234 - Issue #8860: Fixed rounding in timedelta constructor. 4235 4236 - Issue #18849: Fixed a Windows-specific tempfile bug where collision with an 4237 existing directory caused mkstemp and related APIs to fail instead of 4238 retrying. Report and fix by Vlad Shcherbina. 4239 4240 - Issue #18920: argparse's default destination for the version action (-v, 4241 --version) has also been changed to stdout, to match the Python executable. 4242 4243 Tests 4244 ----- 4245 4246 - Issue #18623: Factor out the _SuppressCoreFiles context manager into 4247 test.support. Patch by Valerie Lambert. 4248 4249 - Issue #12037: Fix test_email for desktop Windows. 4250 4251 - Issue #15507: test_subprocess's test_send_signal could fail if the test 4252 runner were run in an environment where the process inherited an ignore 4253 setting for SIGINT. Restore the SIGINT handler to the desired 4254 KeyboardInterrupt raising one during that test. 4255 4256 - Issue #16799: Switched from getopt to argparse style in regrtest's argument 4257 parsing. Added more tests for regrtest's argument parsing. 4258 4259 - Issue #18792: Use "127.0.0.1" or "::1" instead of "localhost" as much as 4260 possible, since "localhost" goes through a DNS lookup under recent Windows 4261 versions. 4262 4263 IDLE 4264 ---- 4265 4266 - Issue #18489: Add tests for SearchEngine. Original patch by Phil Webster. 4267 4268 Documentation 4269 ------------- 4270 4271 - Issue #18743: Fix references to non-existent "StringIO" module. 4272 4273 - Issue #18783: Removed existing mentions of Python long type in docstrings, 4274 error messages and comments. 4275 4276 Build 4277 ----- 4278 4279 - Issue #1584: Provide configure options to override default search paths for 4280 Tcl and Tk when building _tkinter. 4281 4282 - Issue #15663: Tcl/Tk 8.5.14 is now included with the OS X 10.6+ 64-/32-bit 4283 installer. It is no longer necessary to install a third-party version of 4284 Tcl/Tk 8.5 to work around the problems in the Apple-supplied Tcl/Tk 8.5 4285 shipped in OS X 10.6 and later releases. 4286 4287 Tools/Demos 4288 ----------- 4289 4290 - Issue #18922: Now The Lib/smtpd.py and Tools/i18n/msgfmt.py scripts write 4291 their version strings to stdout, and not to sderr. 4292 4293 4294 What's New in Python 3.4.0 Alpha 1? 4295 =================================== 4296 4297 Release date: 2013-08-03 4298 4299 Core and Builtins 4300 ----------------- 4301 4302 - Issue #16741: Fix an error reporting in int(). 4303 4304 - Issue #17899: Fix rare file descriptor leak in os.listdir(). 4305 4306 - Issue #10241: Clear extension module dict copies at interpreter shutdown. 4307 Patch by Neil Schemenauer, minimally modified. 4308 4309 - Issue #9035: ismount now recognises volumes mounted below a drive root 4310 on Windows. Original patch by Atsuo Ishimoto. 4311 4312 - Issue #18214: Improve finalization of Python modules to avoid setting 4313 their globals to None, in most cases. 4314 4315 - Issue #18112: PEP 442 implementation (safe object finalization). 4316 4317 - Issue #18552: Check return value of PyArena_AddPyObject() in 4318 obj2ast_object(). 4319 4320 - Issue #18560: Fix potential NULL pointer dereference in sum(). 4321 4322 - Issue #18520: Add a new PyStructSequence_InitType2() function, same than 4323 PyStructSequence_InitType() except that it has a return value (0 on success, 4324 -1 on error). 4325 4326 - Issue #15905: Fix theoretical buffer overflow in handling of sys.argv[0], 4327 prefix and exec_prefix if the operation system does not obey MAXPATHLEN. 4328 4329 - Issue #18408: Fix many various bugs in code handling errors, especially 4330 on memory allocation failure (MemoryError). 4331 4332 - Issue #18344: Fix potential ref-leaks in _bufferedreader_read_all(). 4333 4334 - Issue #18342: Use the repr of a module name when an import fails when using 4335 ``from ... import ...``. 4336 4337 - Issue #17872: Fix a segfault in marshal.load() when input stream returns 4338 more bytes than requested. 4339 4340 - Issue #18338: `python --version` now prints version string to stdout, and 4341 not to stderr. Patch by Berker Peksag and Michael Dickens. 4342 4343 - Issue #18426: Fix NULL pointer dereference in C extension import when 4344 PyModule_GetDef() returns an error. 4345 4346 - Issue #17206: On Windows, increase the stack size from 2 MB to 4.2 MB to fix 4347 a stack overflow in the marshal module (fix a crash in test_marshal). 4348 Patch written by Jeremy Kloth. 4349 4350 - Issue #3329: Implement the PEP 445: Add new APIs to customize Python memory 4351 allocators. 4352 4353 - Issue #18328: Reorder ops in PyThreadState_Delete*() functions. Now the 4354 tstate is first removed from TLS and then deallocated. 4355 4356 - Issue #13483: Use VirtualAlloc in obmalloc on Windows. 4357 4358 - Issue #18184: PyUnicode_FromFormat() and PyUnicode_FromFormatV() now raise 4359 OverflowError when an argument of %c format is out of range. 4360 4361 - Issue #18111: The min() and max() functions now support a default argument 4362 to be returned instead of raising a ValueError on an empty sequence. 4363 (Contributed by Julian Berman.) 4364 4365 - Issue #18137: Detect integer overflow on precision in float.__format__() 4366 and complex.__format__(). 4367 4368 - Issue #18183: Fix various unicode operations on strings with large unicode 4369 codepoints. 4370 4371 - Issue #18180: Fix ref leak in _PyImport_GetDynLoadWindows(). 4372 4373 - Issue #18038: SyntaxError raised during compilation sources with illegal 4374 encoding now always contains an encoding name. 4375 4376 - Issue #17931: Resolve confusion on Windows between pids and process 4377 handles. 4378 4379 - Tweak the exception message when the magic number or size value in a bytecode 4380 file is truncated. 4381 4382 - Issue #17932: Fix an integer overflow issue on Windows 64-bit in iterators: 4383 change the C type of seqiterobject.it_index from long to Py_ssize_t. 4384 4385 - Issue #18065: Don't set __path__ to the package name for frozen packages. 4386 4387 - Issue #18088: When reloading a module, unconditionally reset all relevant 4388 attributes on the module (e.g. __name__, __loader__, __package__, __file__, 4389 __cached__). 4390 4391 - Issue #17937: Try harder to collect cyclic garbage at shutdown. 4392 4393 - Issue #12370: Prevent class bodies from interfering with the __class__ 4394 closure. 4395 4396 - Issue #17644: Fix a crash in str.format when curly braces are used in square 4397 brackets. 4398 4399 - Issue #17237: Fix crash in the ASCII decoder on m68k. 4400 4401 - Issue #17927: Frame objects kept arguments alive if they had been 4402 copied into a cell, even if the cell was cleared. 4403 4404 - Issue #1545463: At shutdown, defer finalization of codec modules so 4405 that stderr remains usable. 4406 4407 - Issue #7330: Implement width and precision (ex: "%5.3s") for the format 4408 string of PyUnicode_FromFormat() function, original patch written by Ysj Ray. 4409 4410 - Issue #1545463: Global variables caught in reference cycles are now 4411 garbage-collected at shutdown. 4412 4413 - Issue #17094: Clear stale thread states after fork(). Note that this 4414 is a potentially disruptive change since it may release some system 4415 resources which would otherwise remain perpetually alive (e.g. database 4416 connections kept in thread-local storage). 4417 4418 - Issue #17408: Avoid using an obsolete instance of the copyreg module when 4419 the interpreter is shutdown and then started again. 4420 4421 - Issue #5845: Enable tab-completion in the interactive interpreter by 4422 default, thanks to a new sys.__interactivehook__. 4423 4424 - Issue #17115,17116: Module initialization now includes setting __package__ and 4425 __loader__ attributes to None. 4426 4427 - Issue #17853: Ensure locals of a class that shadow free variables always win 4428 over the closures. 4429 4430 - Issue #17863: In the interactive console, don't loop forever if the encoding 4431 can't be fetched from stdin. 4432 4433 - Issue #17867: Raise an ImportError if __import__ is not found in __builtins__. 4434 4435 - Issue #18698: Ensure importlib.reload() returns the module out of sys.modules. 4436 4437 - Issue #17857: Prevent build failures with pre-3.5.0 versions of sqlite3, 4438 such as was shipped with Centos 5 and Mac OS X 10.4. 4439 4440 - Issue #17413: sys.settrace callbacks were being passed a string instead of an 4441 exception instance for the 'value' element of the arg tuple if the exception 4442 originated from C code; now an exception instance is always provided. 4443 4444 - Issue #17782: Fix undefined behaviour on platforms where 4445 ``struct timespec``'s "tv_nsec" member is not a C long. 4446 4447 - Issue #17722: When looking up __round__, resolve descriptors. 4448 4449 - Issue #16061: Speed up str.replace() for replacing 1-character strings. 4450 4451 - Issue #17715: Fix segmentation fault from raising an exception in a __trunc__ 4452 method. 4453 4454 - Issue #17643: Add __callback__ attribute to weakref.ref. 4455 4456 - Issue #16447: Fixed potential segmentation fault when setting __name__ on a 4457 class. 4458 4459 - Issue #17669: Fix crash involving finalization of generators using yield from. 4460 4461 - Issue #14439: Python now prints the traceback on runpy failure at startup. 4462 4463 - Issue #17469: Fix _Py_GetAllocatedBlocks() and sys.getallocatedblocks() 4464 when running on valgrind. 4465 4466 - Issue #17619: Make input() check for Ctrl-C correctly on Windows. 4467 4468 - Issue #17357: Add missing verbosity messages for -v/-vv that were lost during 4469 the importlib transition. 4470 4471 - Issue #17610: Don't rely on non-standard behavior of the C qsort() function. 4472 4473 - Issue #17323: The "[X refs, Y blocks]" printed by debug builds has been 4474 disabled by default. It can be re-enabled with the `-X showrefcount` option. 4475 4476 - Issue #17328: Fix possible refleak in dict.setdefault. 4477 4478 - Issue #17275: Corrected class name in init error messages of the C version of 4479 BufferedWriter and BufferedRandom. 4480 4481 - Issue #7963: Fixed misleading error message that issued when object is 4482 called without arguments. 4483 4484 - Issue #8745: Small speed up zipimport on Windows. Patch by Catalin Iacob. 4485 4486 - Issue #5308: Raise ValueError when marshalling too large object (a sequence 4487 with size >= 2**31), instead of producing illegal marshal data. 4488 4489 - Issue #12983: Bytes literals with invalid ``\x`` escape now raise a SyntaxError 4490 and a full traceback including line number. 4491 4492 - Issue #16967: In function definition, evaluate positional defaults before 4493 keyword-only defaults. 4494 4495 - Issue #17173: Remove uses of locale-dependent C functions (isalpha() etc.) 4496 in the interpreter. 4497 4498 - Issue #17137: When an Unicode string is resized, the internal wide character 4499 string (wstr) format is now cleared. 4500 4501 - Issue #17043: The unicode-internal decoder no longer read past the end of 4502 input buffer. 4503 4504 - Issue #17098: All modules now have __loader__ set even if they pre-exist the 4505 bootstrapping of importlib. 4506 4507 - Issue #16979: Fix error handling bugs in the unicode-escape-decode decoder. 4508 4509 - Issue #16772: The base argument to the int constructor no longer accepts 4510 floats, or other non-integer objects with an __int__ method. Objects 4511 with an __index__ method are now accepted. 4512 4513 - Issue #10156: In the interpreter's initialization phase, unicode globals 4514 are now initialized dynamically as needed. 4515 4516 - Issue #16980: Fix processing of escaped non-ascii bytes in the 4517 unicode-escape-decode decoder. 4518 4519 - Issue #16975: Fix error handling bug in the escape-decode bytes decoder. 4520 4521 - Issue #14850: Now a charmap decoder treats U+FFFE as "undefined mapping" 4522 in any mapping, not only in a string. 4523 4524 - Issue #16613: Add *m* argument to ``collections.Chainmap.new_child`` to 4525 allow the new child map to be specified explicitly. 4526 4527 - Issue #16730: importlib.machinery.FileFinder now no longers raises an 4528 exception when trying to populate its cache and it finds out the directory is 4529 unreadable or has turned into a file. Reported and diagnosed by 4530 David Pritchard. 4531 4532 - Issue #16906: Fix a logic error that prevented most static strings from being 4533 cleared. 4534 4535 - Issue #11461: Fix the incremental UTF-16 decoder. Original patch by 4536 Amaury Forgeot d'Arc. 4537 4538 - Issue #16856: Fix a segmentation fault from calling repr() on a dict with 4539 a key whose repr raise an exception. 4540 4541 - Issue #16367: Fix FileIO.readall() on Windows for files larger than 2 GB. 4542 4543 - Issue #16761: Calling int() with base argument only now raises TypeError. 4544 4545 - Issue #16759: Support the full DWORD (unsigned long) range in Reg2Py 4546 when retrieving a REG_DWORD value. This corrects functions like 4547 winreg.QueryValueEx that may have been returning truncated values. 4548 4549 - Issue #14420: Support the full DWORD (unsigned long) range in Py2Reg 4550 when passed a REG_DWORD value. Fixes OverflowError in winreg.SetValueEx. 4551 4552 - Issue #11939: Set the st_dev attribute of stat_result to allow Windows to 4553 take advantage of the os.path.samefile/sameopenfile/samestat implementations 4554 used by other platforms. 4555 4556 - Issue #16772: The int() constructor's second argument (base) no longer 4557 accepts non integer values. Consistent with the behavior in Python 2. 4558 4559 - Issue #14470: Remove w9xpopen support per PEP 11. 4560 4561 - Issue #9856: Replace deprecation warning with raising TypeError 4562 in object.__format__. Patch by Florent Xicluna. 4563 4564 - Issue #16597: In buffered and text IO, call close() on the underlying stream 4565 if invoking flush() fails. 4566 4567 - Issue #16722: In the bytes() constructor, try to call __bytes__ on the 4568 argument before __index__. 4569 4570 - Issue #16421: loading multiple modules from one shared object is now 4571 handled correctly (previously, the first module loaded from that file 4572 was silently returned). Patch by Václav Šmilauer. 4573 4574 - Issue #16602: When a weakref's target was part of a long deallocation 4575 chain, the object could remain reachable through its weakref even though 4576 its refcount had dropped to zero. 4577 4578 - Issue #16495: Remove extraneous NULL encoding check from bytes_decode(). 4579 4580 - Issue #16619: Create NameConstant AST class to represent None, True, and False 4581 literals. As a result, these constants are never loaded at runtime from 4582 builtins. 4583 4584 - Issue #16455: On FreeBSD and Solaris, if the locale is C, the 4585 ASCII/surrogateescape codec is now used (instead of the locale encoding) to 4586 decode the command line arguments. This change fixes inconsistencies with 4587 os.fsencode() and os.fsdecode(), because these operating systems announce an 4588 ASCII locale encoding, but actually use the ISO-8859-1 encoding in practice. 4589 4590 - Issue #16562: Optimize dict equality testing. Patch by Serhiy Storchaka. 4591 4592 - Issue #16588: Silence unused-but-set warnings in Python/thread_pthread 4593 4594 - Issue #16592: stringlib_bytes_join doesn't raise MemoryError on allocation 4595 failure. 4596 4597 - Issue #16546: Fix: ast.YieldFrom argument is now mandatory. 4598 4599 - Issue #16514: Fix regression causing a traceback when sys.path[0] is None 4600 (actually, any non-string or non-bytes type). 4601 4602 - Issue #16306: Fix multiple error messages when unknown command line 4603 parameters where passed to the interpreter. Patch by Hieu Nguyen. 4604 4605 - Issue #16215: Fix potential double memory free in str.replace(). Patch 4606 by Serhiy Storchaka. 4607 4608 - Issue #16290: A float return value from the __complex__ special method is no 4609 longer accepted in the complex() constructor. 4610 4611 - Issue #16416: On Mac OS X, operating system data are now always 4612 encoded/decoded to/from UTF-8/surrogateescape, instead of the locale encoding 4613 (which may be ASCII if no locale environment variable is set), to avoid 4614 inconsistencies with os.fsencode() and os.fsdecode() functions which are 4615 already using UTF-8/surrogateescape. 4616 4617 - Issue #16453: Fix equality testing of dead weakref objects. 4618 4619 - Issue #9535: Fix pending signals that have been received but not yet 4620 handled by Python to not persist after os.fork() in the child process. 4621 4622 - Issue #14794: Fix slice.indices to return correct results for huge values, 4623 rather than raising OverflowError. 4624 4625 - Issue #15001: fix segfault on "del sys.modules['__main__']". Patch by Victor 4626 Stinner. 4627 4628 - Issue #8271: the utf-8 decoder now outputs the correct number of U+FFFD 4629 characters when used with the 'replace' error handler on invalid utf-8 4630 sequences. Patch by Serhiy Storchaka, tests by Ezio Melotti. 4631 4632 - Issue #5765: Apply a hard recursion limit in the compiler instead of 4633 blowing the stack and segfaulting. Initial patch by Andrea Griffini. 4634 4635 - Issue #16402: When slicing a range, fix shadowing of exceptions from 4636 __index__. 4637 4638 - Issue #16336: fix input checking in the surrogatepass error handler. 4639 Patch by Serhiy Storchaka. 4640 4641 - Issue #8401: assigning an int to a bytearray slice (e.g. b[3:4] = 5) now 4642 raises an error. 4643 4644 - Issue #7317: Display full tracebacks when an error occurs asynchronously. 4645 Patch by Alon Horev with update by Alexey Kachayev. 4646 4647 - Issue #16309: Make PYTHONPATH="" behavior the same as if PYTHONPATH 4648 not set at all. 4649 4650 - Issue #10189: Improve the error reporting of SyntaxErrors related to global 4651 and nonlocal statements. 4652 4653 - Fix segfaults on setting __qualname__ on builtin types and attempting to 4654 delete it on any type. 4655 4656 - Issue #14625: Rewrite the UTF-32 decoder. It is now 3x to 4x faster. Patch 4657 written by Serhiy Storchaka. 4658 4659 - Issue #16345: Fix an infinite loop when ``fromkeys`` on a dict subclass 4660 received a nonempty dict from the constructor. 4661 4662 - Issue #16271: Fix strange bugs that resulted from __qualname__ appearing in a 4663 class's __dict__ and on type. 4664 4665 - Issue #12805: Make bytes.join and bytearray.join faster when the separator 4666 is empty. Patch by Serhiy Storchaka. 4667 4668 - Issue #6074: Ensure cached bytecode files can always be updated by the 4669 user that created them, even when the source file is read-only. 4670 4671 - Issue #15958: bytes.join and bytearray.join now accept arbitrary buffer 4672 objects. 4673 4674 - Issue #14783: Improve int() docstring and switch docstrings for str(), 4675 range(), and slice() to use multi-line signatures. 4676 4677 - Issue #16160: Subclass support now works for types.SimpleNamespace. 4678 4679 - Issue #16148: Implement PEP 424, adding operator.length_hint and 4680 PyObject_LengthHint. 4681 4682 - Upgrade Unicode data (UCD) to version 6.2. 4683 4684 - Issue #15379: Fix passing of non-BMP characters as integers for the charmap 4685 decoder (already working as unicode strings). Patch by Serhiy Storchaka. 4686 4687 - Issue #15144: Fix possible integer overflow when handling pointers as integer 4688 values, by using `Py_uintptr_t` instead of `size_t`. Patch by Serhiy 4689 Storchaka. 4690 4691 - Issue #15965: Explicitly cast `AT_FDCWD` as (int). Required on Solaris 10 4692 (which defines `AT_FDCWD` as ``0xffd19553``), harmless on other platforms. 4693 4694 - Issue #15839: Convert SystemErrors in `super()` to RuntimeErrors. 4695 4696 - Issue #15448: Buffered IO now frees the buffer when closed, instead 4697 of when deallocating. 4698 4699 - Issue #15846: Fix SystemError which happened when using `ast.parse()` in an 4700 exception handler on code with syntax errors. 4701 4702 - Issue #15897: zipimport.c doesn't check return value of fseek(). 4703 Patch by Felipe Cruz. 4704 4705 - Issue #15801: Make sure mappings passed to '%' formatting are actually 4706 subscriptable. 4707 4708 - Issue #15111: __import__ should propagate ImportError when raised as a 4709 side-effect of a module triggered from using fromlist. 4710 4711 - Issue #15022: Add pickle and comparison support to types.SimpleNamespace. 4712 4713 Library 4714 ------- 4715 4716 - Issue #4331: Added functools.partialmethod (Initial patch by Alon Horev) 4717 4718 - Issue #13461: Fix a crash in the TextIOWrapper.tell method on 64-bit 4719 platforms. Patch by Yogesh Chaudhari. 4720 4721 - Issue #18681: Fix a NameError in importlib.reload() (noticed by Weizhao Li). 4722 4723 - Issue #14323: Expanded the number of digits in the coefficients for the 4724 RGB -- YIQ conversions so that they match the FCC NTSC versions. 4725 4726 - Issue #17998: Fix an internal error in regular expression engine. 4727 4728 - Issue #17557: Fix os.getgroups() to work with the modified behavior of 4729 getgroups(2) on OS X 10.8. Original patch by Mateusz Lenik. 4730 4731 - Issue #18608: Avoid keeping a strong reference to the locale module 4732 inside the _io module. 4733 4734 - Issue #18619: Fix atexit leaking callbacks registered from sub-interpreters, 4735 and make it GC-aware. 4736 4737 - Issue #15699: The readline module now uses PEP 3121-style module 4738 initialization, so as to reclaim allocated resources (Python callbacks) 4739 at shutdown. Original patch by Robin Schreiber. 4740 4741 - Issue #17616: wave.open now supports the context management protocol. 4742 4743 - Issue #18599: Fix name attribute of _sha1.sha1() object. It now returns 4744 'SHA1' instead of 'SHA'. 4745 4746 - Issue #13266: Added inspect.unwrap to easily unravel __wrapped__ chains 4747 (initial patch by Daniel Urban and Aaron Iles) 4748 4749 - Issue #18561: Skip name in ctypes' _build_callargs() if name is NULL. 4750 4751 - Issue #18559: Fix NULL pointer dereference error in _pickle module 4752 4753 - Issue #18556: Check the return type of PyUnicode_AsWideChar() in ctype's 4754 U_set(). 4755 4756 - Issue #17818: aifc.getparams now returns a namedtuple. 4757 4758 - Issue #18549: Eliminate dead code in socket_ntohl() 4759 4760 - Issue #18530: Remove additional stat call from posixpath.ismount. 4761 Patch by Alex Gaynor. 4762 4763 - Issue #18514: Fix unreachable Py_DECREF() call in PyCData_FromBaseObj() 4764 4765 - Issue #9177: Calling read() or write() now raises ValueError, not 4766 AttributeError, on a closed SSL socket. Patch by Senko Rasic. 4767 4768 - Issue #18513: Fix behaviour of cmath.rect w.r.t. signed zeros on OS X 10.8 + 4769 gcc. 4770 4771 - Issue #18479: Changed venv Activate.ps1 to make deactivate a function, and 4772 removed Deactivate.ps1. 4773 4774 - Issue #18480: Add missing call to PyType_Ready to the _elementtree extension. 4775 4776 - Issue #17778: Fix test discovery for test_multiprocessing. (Patch by 4777 Zachary Ware.) 4778 4779 - Issue #18393: The private module _gestalt and private functions 4780 platform._mac_ver_gestalt, platform._mac_ver_lookup and 4781 platform._bcd2str have been removed. This does not affect the public 4782 interface of the platform module. 4783 4784 - Issue #17482: functools.update_wrapper (and functools.wraps) now set the 4785 __wrapped__ attribute correctly even if the underlying function has a 4786 __wrapped__ attribute set. 4787 4788 - Issue #18431: The new email header parser now decodes RFC2047 encoded words 4789 in structured headers. 4790 4791 - Issue #18432: The sched module's queue method was incorrectly returning 4792 an iterator instead of a list. 4793 4794 - Issue #18044: The new email header parser was mis-parsing encoded words where 4795 an encoded character immediately followed the '?' that follows the CTE 4796 character, resulting in a decoding failure. They are now decoded correctly. 4797 4798 - Issue #18101: Tcl.split() now process strings nested in a tuple as it 4799 do with byte strings. 4800 4801 - Issue #18116: getpass was always getting an error when testing /dev/tty, 4802 and thus was always falling back to stdin, and would then raise an exception 4803 if stdin could not be used (such as /dev/null). It also leaked an open file. 4804 All of these issues are now fixed. 4805 4806 - Issue #17198: Fix a NameError in the dbm module. Patch by Valentina 4807 Mukhamedzhanova. 4808 4809 - Issue #18013: Fix cgi.FieldStorage to parse the W3C sample form. 4810 4811 - Issue #18020: improve html.escape speed by an order of magnitude. 4812 Patch by Matt Bryant. 4813 4814 - Issue #18347: ElementTree's html serializer now preserves the case of 4815 closing tags. 4816 4817 - Issue #17261: Ensure multiprocessing's proxies use proper address. 4818 4819 - Issue #18343: faulthandler.register() now keeps the previous signal handler 4820 when the function is called twice, so faulthandler.unregister() restores 4821 correctly the original signal handler. 4822 4823 - Issue #17097: Make multiprocessing ignore EINTR. 4824 4825 - Issue #18339: Negative ints keys in unpickler.memo dict no longer cause a 4826 segfault inside the _pickle C extension. 4827 4828 - Issue #18240: The HMAC module is no longer restricted to bytes and accepts 4829 any bytes-like object, e.g. memoryview. Original patch by Jonas Borgström. 4830 4831 - Issue #18224: Removed pydoc script from created venv, as it causes problems 4832 on Windows and adds no value over and above python -m pydoc ... 4833 4834 - Issue #18155: The csv module now correctly handles csv files that use 4835 a delimter character that has a special meaning in regexes, instead of 4836 throwing an exception. 4837 4838 - Issue #14360: encode_quopri can now be successfully used as an encoder 4839 when constructing a MIMEApplication object. 4840 4841 - Issue #11390: Add -o and -f command line options to the doctest CLI to 4842 specify doctest options (and convert it to using argparse). 4843 4844 - Issue #18135: ssl.SSLSocket.write() now raises an OverflowError if the input 4845 string in longer than 2 gigabytes, and ssl.SSLContext.load_cert_chain() 4846 raises a ValueError if the password is longer than 2 gigabytes. The ssl 4847 module does not support partial write. 4848 4849 - Issue #11016: Add C implementation of the stat module as _stat. 4850 4851 - Issue #18248: Fix libffi build on AIX. 4852 4853 - Issue #18259: Declare sethostname in socketmodule.c for AIX 4854 4855 - Issue #18147: Add diagnostic functions to ssl.SSLContext(). get_ca_list() 4856 lists all loaded CA certificates and cert_store_stats() returns amount of 4857 loaded X.509 certs, X.509 CA certs and CRLs. 4858 4859 - Issue #18167: cgi.FieldStorage no longer fails to handle multipart/form-data 4860 when ``\r\n`` appears at end of 65535 bytes without other newlines. 4861 4862 - Issue #18076: Introduce importlib.util.decode_source(). 4863 4864 - Issue #18357: add tests for dictview set difference. 4865 Patch by Fraser Tweedale. 4866 4867 - importlib.abc.SourceLoader.get_source() no longer changes SyntaxError or 4868 UnicodeDecodeError into ImportError. 4869 4870 - Issue #18058, 18057: Make the namespace package loader meet the 4871 importlib.abc.InspectLoader ABC, allowing for namespace packages to work with 4872 runpy. 4873 4874 - Issue #17177: The imp module is pending deprecation. 4875 4876 - subprocess: Prevent a possible double close of parent pipe fds when the 4877 subprocess exec runs into an error. Prevent a regular multi-close of the 4878 /dev/null fd when any of stdin, stdout and stderr was set to DEVNULL. 4879 4880 - Issue #18194: Introduce importlib.util.cache_from_source() and 4881 source_from_cache() while documenting the equivalent functions in imp as 4882 deprecated. 4883 4884 - Issue #17907: Document imp.new_module() as deprecated in favour of 4885 types.ModuleType. 4886 4887 - Issue #18192: Introduce importlib.util.MAGIC_NUMBER and document as deprecated 4888 imp.get_magic(). 4889 4890 - Issue #18149: Add filecmp.clear_cache() to manually clear the filecmp cache. 4891 Patch by Mark Levitt 4892 4893 - Issue #18193: Add importlib.reload(). 4894 4895 - Issue #18157: Stop using imp.load_module() in pydoc. 4896 4897 - Issue #16102: Make uuid._netbios_getnode() work again on Python 3. 4898 4899 - Issue #17134: Add ssl.enum_cert_store() as interface to Windows' cert store. 4900 4901 - Issue #18143: Implement ssl.get_default_verify_paths() in order to debug 4902 the default locations for cafile and capath. 4903 4904 - Issue #17314: Move multiprocessing.forking over to importlib. 4905 4906 - Issue #11959: SMTPServer and SMTPChannel now take an optional map, use of 4907 which avoids affecting global state. 4908 4909 - Issue #18109: os.uname() now decodes fields from the locale encoding, and 4910 socket.gethostname() now decodes the hostname from the locale encoding, 4911 instead of using the UTF-8 encoding in strict mode. 4912 4913 - Issue #18089: Implement importlib.abc.InspectLoader.load_module. 4914 4915 - Issue #18088: Introduce importlib.abc.Loader.init_module_attrs for setting 4916 module attributes. Leads to the pending deprecation of 4917 importlib.util.module_for_loader. 4918 4919 - Issue #17403: urllib.parse.robotparser normalizes the urls before adding to 4920 ruleline. This helps in handling certain types invalid urls in a conservative 4921 manner. Patch contributed by Mher Movsisyan. 4922 4923 - Issue #18070: Have importlib.util.module_for_loader() set attributes 4924 unconditionally in order to properly support reloading. 4925 4926 - Added importlib.util.module_to_load to return a context manager to provide the 4927 proper module object to load. 4928 4929 - Issue #18025: Fixed a segfault in io.BufferedIOBase.readinto() when raw 4930 stream's read() returns more bytes than requested. 4931 4932 - Issue #18011: As was originally intended, base64.b32decode() now raises a 4933 binascii.Error if there are non-b32-alphabet characters present in the input 4934 string, instead of a TypeError. 4935 4936 - Issue #18072: Implement importlib.abc.InspectLoader.get_code() and 4937 importlib.abc.ExecutionLoader.get_code(). 4938 4939 - Issue #8240: Set the SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER flag on SSL 4940 sockets. 4941 4942 - Issue #17269: Workaround for socket.getaddrinfo crash on MacOS X 4943 with port None or "0" and flags AI_NUMERICSERV. 4944 4945 - Issue #16986: ElementTree now correctly works with string input when the 4946 internal XML encoding is not UTF-8 or US-ASCII. 4947 4948 - Issue #17996: socket module now exposes AF_LINK constant on BSD and OSX. 4949 4950 - Issue #17900: Allowed pickling of recursive OrderedDicts. Decreased pickled 4951 size and pickling time. 4952 4953 - Issue #17914: Add os.cpu_count(). Patch by Yogesh Chaudhari, based on an 4954 initial patch by Trent Nelson. 4955 4956 - Issue #17812: Fixed quadratic complexity of base64.b32encode(). 4957 Optimize base64.b32encode() and base64.b32decode() (speed up to 3x). 4958 4959 - Issue #17980: Fix possible abuse of ssl.match_hostname() for denial of 4960 service using certificates with many wildcards (CVE-2013-2099). 4961 4962 - Issue #15758: Fix FileIO.readall() so it no longer has O(n**2) complexity. 4963 4964 - Issue #14596: The struct.Struct() objects now use a more compact 4965 implementation. 4966 4967 - Issue #17981: logging's SysLogHandler now closes the socket when it catches 4968 socket OSErrors. 4969 4970 - Issue #17964: Fix os.sysconf(): the return type of the C sysconf() function 4971 is long, not int. 4972 4973 - Fix typos in the multiprocessing module. 4974 4975 - Issue #17754: Make ctypes.util.find_library() independent of the locale. 4976 4977 - Issue #17968: Fix memory leak in os.listxattr(). 4978 4979 - Issue #17606: Fixed support of encoded byte strings in the XMLGenerator 4980 characters() and ignorableWhitespace() methods. Original patch by Sebastian 4981 Ortiz Vasquez. 4982 4983 - Issue #17732: Ignore distutils.cfg options pertaining to install paths if a 4984 virtual environment is active. 4985 4986 - Issue #17915: Fix interoperability of xml.sax with file objects returned by 4987 codecs.open(). 4988 4989 - Issue #16601: Restarting iteration over tarfile really restarts rather 4990 than continuing from where it left off. Patch by Michael Birtwell. 4991 4992 - Issue #17289: The readline module now plays nicer with external modules 4993 or applications changing the rl_completer_word_break_characters global 4994 variable. Initial patch by Bradley Froehle. 4995 4996 - Issue #12181: select module: Fix struct kevent definition on OpenBSD 64-bit 4997 platforms. Patch by Federico Schwindt. 4998 4999 - Issue #11816: multiple improvements to the dis module: get_instructions 5000 generator, ability to redirect output to a file, Bytecode and Instruction 5001 abstractions. Patch by Nick Coghlan, Ryan Kelly and Thomas Kluyver. 5002 5003 - Issue #13831: Embed stringification of remote traceback in local 5004 traceback raised when pool task raises an exception. 5005 5006 - Issue #15528: Add weakref.finalize to support finalization using 5007 weakref callbacks. 5008 5009 - Issue #14173: Avoid crashing when reading a signal handler during 5010 interpreter shutdown. 5011 5012 - Issue #15902: Fix imp.load_module() accepting None as a file when loading an 5013 extension module. 5014 5015 - Issue #13721: SSLSocket.getpeercert() and SSLSocket.do_handshake() now 5016 raise an OSError with ENOTCONN, instead of an AttributeError, when the 5017 SSLSocket is not connected. 5018 5019 - Issue #14679: add an __all__ (that contains only HTMLParser) to html.parser. 5020 5021 - Issue #17802: Fix an UnboundLocalError in html.parser. Initial tests by 5022 Thomas Barlow. 5023 5024 - Issue #17358: Modules loaded by imp.load_source() and load_compiled() (and by 5025 extension load_module()) now have a better chance of working when reloaded. 5026 5027 - Issue #17804: New function ``struct.iter_unpack`` allows for streaming 5028 struct unpacking. 5029 5030 - Issue #17830: When keyword.py is used to update a keyword file, it now 5031 preserves the line endings of the original file. 5032 5033 - Issue #17272: Making the urllib.request's Request.full_url a descriptor. 5034 Fixes bugs with assignment to full_url. Patch by Demian Brecht. 5035 5036 - Issue #17353: Plistlib emitted empty data tags with deeply nested datastructures 5037 5038 - Issue #11714: Use 'with' statements to assure a Semaphore releases a 5039 condition variable. Original patch by Thomas Rachel. 5040 5041 - Issue #16624: `subprocess.check_output` now accepts an `input` argument, 5042 allowing the subprocess's stdin to be provided as a (byte) string. 5043 Patch by Zack Weinberg. 5044 5045 - Issue #17795: Reverted backwards-incompatible change in SysLogHandler with 5046 Unix domain sockets. 5047 5048 - Issue #16694: Add a pure Python implementation of the operator module. 5049 Patch by Zachary Ware. 5050 5051 - Issue #11182: remove the unused and undocumented pydoc.Scanner class. 5052 Patch by Martin Morrison. 5053 5054 - Issue #17741: Add ElementTree.XMLPullParser, an event-driven parser for 5055 non-blocking applications. 5056 5057 - Issue #17555: Fix ForkAwareThreadLock so that size of after fork 5058 registry does not grow exponentially with generation of process. 5059 5060 - Issue #17707: fix regression in multiprocessing.Queue's get() method where 5061 it did not block for short timeouts. 5062 5063 - Issue #17720: Fix the Python implementation of pickle.Unpickler to correctly 5064 process the APPENDS opcode when it is used on non-list objects. 5065 5066 - Issue #17012: shutil.which() no longer falls back to the PATH environment 5067 variable if an empty path argument is specified. Patch by Serhiy Storchaka. 5068 5069 - Issue #17710: Fix pickle raising a SystemError on bogus input. 5070 5071 - Issue #17341: Include the invalid name in the error messages from re about 5072 invalid group names. 5073 5074 - Issue #17702: os.environ now raises KeyError with the original environment 5075 variable name (str on UNIX), instead of using the encoded name (bytes on 5076 UNIX). 5077 5078 - Issue #16163: Make the importlib based version of pkgutil.iter_importers 5079 work for submodules. Initial patch by Berker Peksag. 5080 5081 - Issue #16804: Fix a bug in the 'site' module that caused running 5082 'python -S -m site' to incorrectly throw an exception. 5083 5084 - Issue #15480: Remove the deprecated and unused TYPE_INT64 code from marshal. 5085 Initial patch by Daniel Riti. 5086 5087 - Issue #2118: SMTPException is now a subclass of OSError. 5088 5089 - Issue #17016: Get rid of possible pointer wraparounds and integer overflows 5090 in the re module. Patch by Nickolai Zeldovich. 5091 5092 - Issue #16658: add missing return to HTTPConnection.send(). 5093 Patch by Jeff Knupp. 5094 5095 - Issue #9556: the logging package now allows specifying a time-of-day for a 5096 TimedRotatingFileHandler to rotate. 5097 5098 - Issue #14971: unittest test discovery no longer gets confused when a function 5099 has a different __name__ than its name in the TestCase class dictionary. 5100 5101 - Issue #17487: The wave getparams method now returns a namedtuple rather than 5102 a plain tuple. 5103 5104 - Issue #17675: socket repr() provides local and remote addresses (if any). 5105 Patch by Giampaolo Rodola' 5106 5107 - Issue #17093: Make the ABCs in importlib.abc provide default values or raise 5108 reasonable exceptions for their methods to make them more amenable to super() 5109 calls. 5110 5111 - Issue #17566: Make importlib.abc.Loader.module_repr() optional instead of an 5112 abstractmethod; now it raises NotImplementedError so as to be ignored by default. 5113 5114 - Issue #17678: Remove the use of deprecated method in http/cookiejar.py by 5115 changing the call to get_origin_req_host() to origin_req_host. 5116 5117 - Issue #17666: Fix reading gzip files with an extra field. 5118 5119 - Issue #16475: Support object instancing, recursion and interned strings 5120 in marshal 5121 5122 - Issue #17502: Process DEFAULT values in mock side_effect that returns iterator. 5123 5124 - Issue #16795: On the ast.arguments object, unify vararg with varargannotation 5125 and kwarg and kwargannotation. Change the column offset of ast.Attribute to be 5126 at the attribute name. 5127 5128 - Issue #17434: Properly raise a SyntaxError when a string occurs between future 5129 imports. 5130 5131 - Issue #17117: Import and @importlib.util.set_loader now set __loader__ when 5132 it has a value of None or the attribute doesn't exist. 5133 5134 - Issue #17032: The "global" in the "NameError: global name 'x' is not defined" 5135 error message has been removed. Patch by Ram Rachum. 5136 5137 - Issue #18080: When building a C extension module on OS X, if the compiler 5138 is overridden with the CC environment variable, use the new compiler as 5139 the default for linking if LDSHARED is not also overridden. This restores 5140 Distutils behavior introduced in 3.2.3 and inadvertently dropped in 3.3.0. 5141 5142 - Issue #18113: Fixed a refcount leak in the curses.panel module's 5143 set_userptr() method. Reported by Atsuo Ishimoto. 5144 5145 - Implement PEP 443 "Single-dispatch generic functions". 5146 5147 - Implement PEP 435 "Adding an Enum type to the Python standard library". 5148 5149 - Issue #15596: Faster pickling of unicode strings. 5150 5151 - Issue #17572: Avoid chained exceptions when passing bad directives to 5152 time.strptime(). Initial patch by Claudiu Popa. 5153 5154 - Issue #17435: threading.Timer's __init__ method no longer uses mutable 5155 default values for the args and kwargs parameters. 5156 5157 - Issue #17526: fix an IndexError raised while passing code without filename to 5158 inspect.findsource(). Initial patch by Tyler Doyle. 5159 5160 - Issue #17540: Added style parameter to logging formatter configuration by dict. 5161 5162 - Issue #16692: The ssl module now supports TLS 1.1 and TLS 1.2. Initial 5163 patch by Michele Orrù. 5164 5165 - Issue #17025: multiprocessing: Reduce Queue and SimpleQueue contention. 5166 5167 - Issue #17536: Add to webbrowser's browser list: www-browser, x-www-browser, 5168 iceweasel, iceape. 5169 5170 - Issue #17150: pprint now uses line continuations to wrap long string 5171 literals. 5172 5173 - Issue #17488: Change the subprocess.Popen bufsize parameter default value 5174 from unbuffered (0) to buffering (-1) to match the behavior existing code 5175 expects and match the behavior of the subprocess module in Python 2 to avoid 5176 introducing hard to track down bugs. 5177 5178 - Issue #17521: Corrected non-enabling of logger following two calls to 5179 fileConfig(). 5180 5181 - Issue #17508: Corrected logging MemoryHandler configuration in dictConfig() 5182 where the target handler wasn't configured first. 5183 5184 - Issue #17209: curses.window.get_wch() now correctly handles KeyboardInterrupt 5185 (CTRL+c). 5186 5187 - Issue #5713: smtplib now handles 421 (closing connection) error codes when 5188 sending mail by closing the socket and reporting the 421 error code via the 5189 exception appropriate to the command that received the error response. 5190 5191 - Issue #16997: unittest.TestCase now provides a subTest() context manager 5192 to procedurally generate, in an easy way, small test instances. 5193 5194 - Issue #17485: Also delete the Request Content-Length header if the data 5195 attribute is deleted. (Follow on to issue Issue #16464). 5196 5197 - Issue #15927: CVS now correctly parses escaped newlines and carriage 5198 when parsing with quoting turned off. 5199 5200 - Issue #17467: add readline and readlines support to mock_open in 5201 unittest.mock. 5202 5203 - Issue #13248: removed deprecated and undocumented difflib.isbjunk, 5204 isbpopular. 5205 5206 - Issue #17192: Update the ctypes module's libffi to v3.0.13. This 5207 specifically addresses a stack misalignment issue on x86 and issues on 5208 some more recent platforms. 5209 5210 - Issue #8862: Fixed curses cleanup when getkey is interrupted by a signal. 5211 5212 - Issue #17443: imaplib.IMAP4_stream was using the default unbuffered IO 5213 in subprocess, but the imap code assumes buffered IO. In Python2 this 5214 worked by accident. IMAP4_stream now explicitly uses buffered IO. 5215 5216 - Issue #17476: Fixed regression relative to Python2 in undocumented pydoc 5217 'allmethods'; it was missing unbound methods on the class. 5218 5219 - Issue #17474: Remove the deprecated methods of Request class. 5220 5221 - Issue #16709: unittest discover order is no-longer filesystem specific. Patch 5222 by Jeff Ramnani. 5223 5224 - Use the HTTPS PyPI url for upload, overriding any plain HTTP URL in pypirc. 5225 5226 - Issue #5024: sndhdr.whichhdr now returns the frame count for WAV files 5227 rather than -1. 5228 5229 - Issue #17460: Remove the strict argument of HTTPConnection and removing the 5230 DeprecationWarning being issued from 3.2 onwards. 5231 5232 - Issue #16880: Do not assume _imp.load_dynamic() is defined in the imp module. 5233 5234 - Issue #16389: Fixed a performance regression relative to Python 3.1 in the 5235 caching of compiled regular expressions. 5236 5237 - Added missing FeedParser and BytesFeedParser to email.parser.__all__. 5238 5239 - Issue #17431: Fix missing import of BytesFeedParser in email.parser. 5240 5241 - Issue #12921: http.server's send_error takes an explain argument to send more 5242 information in response. Patch contributed by Karl. 5243 5244 - Issue #17414: Add timeit, repeat, and default_timer to timeit.__all__. 5245 5246 - Issue #1285086: Get rid of the refcounting hack and speed up 5247 urllib.parse.unquote() and urllib.parse.unquote_to_bytes(). 5248 5249 - Issue #17099: Have importlib.find_loader() raise ValueError when __loader__ 5250 is not set, harmonizing with what happens when the attribute is set to None. 5251 5252 - Expose the O_PATH constant in the os module if it is available. 5253 5254 - Issue #17368: Fix an off-by-one error in the Python JSON decoder that caused 5255 a failure while decoding empty object literals when object_pairs_hook was 5256 specified. 5257 5258 - Issue #17385: Fix quadratic behavior in threading.Condition. The FIFO 5259 queue now uses a deque instead of a list. 5260 5261 - Issue #15806: Add contextlib.ignore(). This creates a context manager to 5262 ignore specified exceptions, replacing the "except SomeException: pass" idiom. 5263 5264 - Issue #14645: The email generator classes now produce output using the 5265 specified linesep throughout. Previously if the prolog, epilog, or 5266 body were stored with a different linesep, that linesep was used. This 5267 fix corrects an RFC non-compliance issue with smtplib.send_message. 5268 5269 - Issue #17278: Fix a crash in heapq.heappush() and heapq.heappop() when 5270 the list is being resized concurrently. 5271 5272 - Issue #16962: Use getdents64 instead of the obsolete getdents syscall 5273 in the subprocess module on Linux. 5274 5275 - Issue #16935: unittest now counts the module as skipped if it raises SkipTest, 5276 instead of counting it as an error. Patch by Zachary Ware. 5277 5278 - Issue #17018: Make Process.join() retry if os.waitpid() fails with EINTR. 5279 5280 - Issue #17223: array module: Fix a crasher when converting an array containing 5281 invalid characters (outside range [U+0000; U+10ffff]) to Unicode: 5282 repr(array), str(array) and array.tounicode(). Patch written by Manuel Jacob. 5283 5284 - Issue #17197: profile/cProfile modules refactored so that code of run() and 5285 runctx() utility functions is not duplicated in both modules. 5286 5287 - Issue #14720: sqlite3: Convert datetime microseconds correctly. 5288 Patch by Lowe Thiderman. 5289 5290 - Issue #15132: Allow a list for the defaultTest argument of 5291 unittest.TestProgram. Patch by Jyrki Pulliainen. 5292 5293 - Issue #17225: JSON decoder now counts columns in the first line starting 5294 with 1, as in other lines. 5295 5296 - Issue #6623: Added explicit DeprecationWarning for ftplib.netrc, which has 5297 been deprecated and undocumented for a long time. 5298 5299 - Issue #13700: Fix byte/string handling in imaplib authentication when an 5300 authobject is specified. 5301 5302 - Issue #13153: Tkinter functions now raise TclError instead of ValueError when 5303 a string argument contains non-BMP character. 5304 5305 - Issue #9669: Protect re against infinite loops on zero-width matching in 5306 non-greedy repeat. Patch by Matthew Barnett. 5307 5308 - Issue #13169: The maximal repetition number in a regular expression has been 5309 increased from 65534 to 2147483647 (on 32-bit platform) or 4294967294 (on 5310 64-bit). 5311 5312 - Issue #17143: Fix a missing import in the trace module. Initial patch by 5313 Berker Peksag. 5314 5315 - Issue #15220: email.feedparser's line splitting algorithm is now simpler and 5316 faster. 5317 5318 - Issue #16743: Fix mmap overflow check on 32 bit Windows. 5319 5320 - Issue #16996: webbrowser module now uses shutil.which() to find a 5321 web-browser on the executable search path. 5322 5323 - Issue #16800: tempfile.gettempdir() no longer left temporary files when 5324 the disk is full. Original patch by Amir Szekely. 5325 5326 - Issue #17192: Import libffi-3.0.12. 5327 5328 - Issue #16564: Fixed regression relative to Python2 in the operation of 5329 email.encoders.encode_7or8bit when used with binary data. 5330 5331 - Issue #17052: unittest discovery should use self.testLoader. 5332 5333 - Issue #4591: Uid and gid values larger than 2**31 are supported now. 5334 5335 - Issue #17141: random.vonmisesvariate() no longer hangs for large kappas. 5336 5337 - Issue #17149: Fix random.vonmisesvariate to always return results in 5338 [0, 2*math.pi]. 5339 5340 - Issue #1470548: XMLGenerator now works with binary output streams. 5341 5342 - Issue #6975: os.path.realpath() now correctly resolves multiple nested 5343 symlinks on POSIX platforms. 5344 5345 - Issue #13773: sqlite3.connect() gets a new `uri` parameter to pass the 5346 filename as a URI, allowing to pass custom options. 5347 5348 - Issue #16564: Fixed regression relative to Python2 in the operation of 5349 email.encoders.encode_noop when used with binary data. 5350 5351 - Issue #10355: The mode, name, encoding and newlines properties now work on 5352 SpooledTemporaryFile objects even when they have not yet rolled over. 5353 Obsolete method xreadline (which has never worked in Python 3) has been 5354 removed. 5355 5356 - Issue #16686: Fixed a lot of bugs in audioop module. Fixed crashes in 5357 avgpp(), maxpp() and ratecv(). Fixed an integer overflow in add(), bias(), 5358 and ratecv(). reverse(), lin2lin() and ratecv() no more lose precision for 5359 32-bit samples. max() and rms() no more returns a negative result and 5360 various other functions now work correctly with 32-bit sample -0x80000000. 5361 5362 - Issue #17073: Fix some integer overflows in sqlite3 module. 5363 5364 - Issue #16723: httplib.HTTPResponse no longer marked closed when the connection 5365 is automatically closed. 5366 5367 - Issue #15359: Add CAN_BCM protocol support to the socket module. Patch by 5368 Brian Thorne. 5369 5370 - Issue #16948: Fix quoted printable body encoding for non-latin1 character 5371 sets in the email package. 5372 5373 - Issue #16811: Fix folding of headers with no value in the provisional email 5374 policies. 5375 5376 - Issue #17132: Update symbol for "yield from" grammar changes. 5377 5378 - Issue #17076: Make copying of xattrs more tolerant of missing FS support. 5379 Patch by Thomas Wouters. 5380 5381 - Issue #17089: Expat parser now correctly works with string input when the 5382 internal XML encoding is not UTF-8 or US-ASCII. It also now accepts bytes 5383 and strings larger than 2 GiB. 5384 5385 - Issue #6083: Fix multiple segmentation faults occurred when PyArg_ParseTuple 5386 parses nested mutating sequence. 5387 5388 - Issue #5289: Fix ctypes.util.find_library on Solaris. 5389 5390 - Issue #17106: Fix a segmentation fault in io.TextIOWrapper when an underlying 5391 stream or a decoder produces data of an unexpected type (i.e. when 5392 io.TextIOWrapper initialized with text stream or use bytes-to-bytes codec). 5393 5394 - Issue #17015: When it has a spec, a Mock object now inspects its signature 5395 when matching calls, so that arguments can be matched positionally or 5396 by name. 5397 5398 - Issue #15633: httplib.HTTPResponse is now mark closed when the server 5399 sends less than the advertised Content-Length. 5400 5401 - Issue #12268: The io module file object write methods no longer abort early 5402 when one of its write system calls is interrupted (EINTR). 5403 5404 - Issue #6972: The zipfile module no longer overwrites files outside of 5405 its destination path when extracting malicious zip files. 5406 5407 - Issue #4844: ZipFile now raises BadZipFile when opens a ZIP file with an 5408 incomplete "End of Central Directory" record. Original patch by Guilherme 5409 Polo and Alan McIntyre. 5410 5411 - Issue #17071: Signature.bind() now works when one of the keyword arguments 5412 is named ``self``. 5413 5414 - Issue #12004: Fix an internal error in PyZipFile when writing an invalid 5415 Python file. Patch by Ben Morgan. 5416 5417 - Have py_compile use importlib as much as possible to avoid code duplication. 5418 Code now raises FileExistsError if the file path to be used for the 5419 byte-compiled file is a symlink or non-regular file as a warning that import 5420 will not keep the file path type if it writes to that path. 5421 5422 - Issue #16972: Have site.addpackage() consider already known paths even when 5423 none are explicitly passed in. Bug report and fix by Kirill. 5424 5425 - Issue #1602133: on Mac OS X a shared library build (``--enable-shared``) 5426 now fills the ``os.environ`` variable correctly. 5427 5428 - Issue #15505: `unittest.installHandler` no longer assumes SIGINT handler is 5429 set to a callable object. 5430 5431 - Issue #13454: Fix a crash when deleting an iterator created by itertools.tee() 5432 if all other iterators were very advanced before. 5433 5434 - Issue #12411: Fix to cgi.parse_multipart to correctly use bytes boundaries 5435 and bytes data. Patch by Jonas Wagner. 5436 5437 - Issue #16957: shutil.which() no longer searches a bare file name in the 5438 current directory on Unix and no longer searches a relative file path with 5439 a directory part in PATH directories. Patch by Thomas Kluyver. 5440 5441 - Issue #1159051: GzipFile now raises EOFError when reading a corrupted file 5442 with truncated header or footer. 5443 5444 - Issue #16993: shutil.which() now preserves the case of the path and extension 5445 on Windows. 5446 5447 - Issue #16992: On Windows in signal.set_wakeup_fd, validate the file 5448 descriptor argument. 5449 5450 - Issue #16422: For compatibility with the Python version, the C version of 5451 decimal now uses strings instead of integers for rounding mode constants. 5452 5453 - Issue #15861: tkinter now correctly works with lists and tuples containing 5454 strings with whitespaces, backslashes or unbalanced braces. 5455 5456 - Issue #9720: zipfile now writes correct local headers for files larger than 5457 4 GiB. 5458 5459 - Issue #16955: Fix the poll() method for multiprocessing's socket 5460 connections on Windows. 5461 5462 - SSLContext.load_dh_params() now properly closes the input file. 5463 5464 - Issue #15031: Refactor some .pyc management code to cut down on code 5465 duplication. Thanks to Ronan Lamy for the report and taking an initial stab 5466 at the problem. 5467 5468 - Issue #16398: Optimize deque.rotate() so that it only moves pointers 5469 and doesn't touch the underlying data with increfs and decrefs. 5470 5471 - Issue #16900: Issue a ResourceWarning when an ssl socket is left unclosed. 5472 5473 - Issue #13899: ``\A``, ``\Z``, and ``\B`` now correctly match the A, Z, 5474 and B literals when used inside character classes (e.g. ``'[\A]'``). 5475 Patch by Matthew Barnett. 5476 5477 - Issue #15545: Fix regression in sqlite3's iterdump method where it was 5478 failing if the connection used a row factory (such as sqlite3.Row) that 5479 produced unsortable objects. (Regression was introduced by fix for 9750). 5480 5481 - fcntl: add F_DUPFD_CLOEXEC constant, available on Linux 2.6.24+. 5482 5483 - Issue #15972: Fix error messages when os functions expecting a file name or 5484 file descriptor receive the incorrect type. 5485 5486 - Issue #8109: The ssl module now has support for server-side SNI, thanks 5487 to a :meth:`SSLContext.set_servername_callback` method. Patch by Daniel 5488 Black. 5489 5490 - Issue #16860: In tempfile, use O_CLOEXEC when available to set the 5491 close-on-exec flag atomically. 5492 5493 - Issue #16674: random.getrandbits() is now 20-40% faster for small integers. 5494 5495 - Issue #16009: JSON error messages now provide more information. 5496 5497 - Issue #16828: Fix error incorrectly raised by bz2.compress(b'') and 5498 bz2.BZ2Compressor.compress(b''). Initial patch by Martin Packman. 5499 5500 - Issue #16833: In http.client.HTTPConnection, do not concatenate the request 5501 headers and body when the payload exceeds 16 KB, since it can consume more 5502 memory for no benefit. Patch by Benno Leslie. 5503 5504 - Issue #16541: tk_setPalette() now works with keyword arguments. 5505 5506 - Issue #16820: In configparser, `parser.popitem()` no longer raises ValueError. 5507 This makes `parser.clean()` work correctly. 5508 5509 - Issue #16820: In configparser, ``parser['section'] = {}`` now preserves 5510 section order within the parser. This makes `parser.update()` preserve section 5511 order as well. 5512 5513 - Issue #16820: In configparser, ``parser['DEFAULT'] = {}`` now correctly 5514 clears previous values stored in the default section. Same goes for 5515 ``parser.update({'DEFAULT': {}})``. 5516 5517 - Issue #9586: Redefine SEM_FAILED on MacOSX to keep compiler happy. 5518 5519 - Issue #16787: Increase asyncore and asynchat default output buffers size, to 5520 decrease CPU usage and increase throughput. 5521 5522 - Issue #10527: make multiprocessing use poll() instead of select() if available. 5523 5524 - Issue #16688: Now regexes contained backreferences correctly work with 5525 non-ASCII strings. Patch by Matthew Barnett. 5526 5527 - Issue #16486: Make aifc files act as context managers. 5528 5529 - Issue #16485: Now file descriptors are closed if file header patching failed 5530 on closing an aifc file. 5531 5532 - Issue #16640: Run less code under a lock in sched module. 5533 5534 - Issue #16165: sched.scheduler.run() no longer blocks a scheduler for other 5535 threads. 5536 5537 - Issue #16641: Default values of sched.scheduler.enter() are no longer 5538 modifiable. 5539 5540 - Issue #16618: Make glob.glob match consistently across strings and bytes 5541 regarding leading dots. Patch by Serhiy Storchaka. 5542 5543 - Issue #16788: Add samestat to Lib/ntpath.py 5544 5545 - Issue #16713: Parsing of 'tel' urls using urlparse separates params from 5546 path. 5547 5548 - Issue #16443: Add docstrings to regular expression match objects. 5549 Patch by Anton Kasyanov. 5550 5551 - Issue #15701: Fix HTTPError info method call to return the headers information. 5552 5553 - Issue #16752: Add a missing import to modulefinder. Patch by Berker Peksag. 5554 5555 - Issue #16646: ftplib.FTP.makeport() might lose socket error details. 5556 (patch by Serhiy Storchaka) 5557 5558 - Issue #16626: Fix infinite recursion in glob.glob() on Windows when the 5559 pattern contains a wildcard in the drive or UNC path. Patch by Serhiy 5560 Storchaka. 5561 5562 - Issue #15783: Except for the number methods, the C version of decimal now 5563 supports all None default values present in decimal.py. These values were 5564 largely undocumented. 5565 5566 - Issue #11175: argparse.FileType now accepts encoding and errors 5567 arguments. Patch by Lucas Maystre. 5568 5569 - Issue #16488: epoll() objects now support the `with` statement. Patch 5570 by Serhiy Storchaka. 5571 5572 - Issue #16298: In HTTPResponse.read(), close the socket when there is no 5573 Content-Length and the incoming stream is finished. Patch by Eran 5574 Rundstein. 5575 5576 - Issue #16049: Add abc.ABC class to enable the use of inheritance to create 5577 ABCs, rather than the more cumbersome metaclass=ABCMeta. Patch by Bruno 5578 Dupuis. 5579 5580 - Expose the TCP_FASTOPEN and MSG_FASTOPEN flags in socket when they're 5581 available. 5582 5583 - Issue #15701: Add a .headers attribute to urllib.error.HTTPError. Patch 5584 contributed by Berker Peksag. 5585 5586 - Issue #15872: Fix 3.3 regression introduced by the new fd-based shutil.rmtree 5587 that caused it to not ignore certain errors when ignore_errors was set. 5588 Patch by Alessandro Moura and Serhiy Storchaka. 5589 5590 - Issue #16248: Disable code execution from the user's home directory by 5591 tkinter when the -E flag is passed to Python. Patch by Zachary Ware. 5592 5593 - Issue #13390: New function :func:`sys.getallocatedblocks()` returns the 5594 number of memory blocks currently allocated. 5595 5596 - Issue #16628: Fix a memory leak in ctypes.resize(). 5597 5598 - Issue #13614: Fix setup.py register failure with invalid rst in description. 5599 Patch by Julien Courteau and Pierre Paul Lefebvre. 5600 5601 - Issue #13512: Create ~/.pypirc securely (CVE-2011-4944). Initial patch by 5602 Philip Jenvey, tested by Mageia and Debian. 5603 5604 - Issue #7719: Make distutils ignore ``.nfs*`` files instead of choking later 5605 on. Initial patch by SilentGhost and Jeff Ramnani. 5606 5607 - Issue #13120: Allow to call pdb.set_trace() from thread. 5608 Patch by Ilya Sandler. 5609 5610 - Issue #16585: Make CJK encoders support error handlers that return bytes per 5611 PEP 383. 5612 5613 - Issue #10182: The re module doesn't truncate indices to 32 bits anymore. 5614 Patch by Serhiy Storchaka. 5615 5616 - Issue #16333: use (",", ": ") as default separator in json when indent is 5617 specified, to avoid trailing whitespace. Patch by Serhiy Storchaka. 5618 5619 - Issue #16573: In 2to3, treat enumerate() like a consuming call, so superfluous 5620 list() calls aren't added to filter(), map(), and zip() which are directly 5621 passed enumerate(). 5622 5623 - Issue #16464: Reset the Content-Length header when a urllib Request is reused 5624 with new data. 5625 5626 - Issue #12848: The pure Python pickle implementation now treats object 5627 lengths as unsigned 32-bit integers, like the C implementation does. 5628 Patch by Serhiy Storchaka. 5629 5630 - Issue #16423: urllib.request now has support for ``data:`` URLs. Patch by 5631 Mathias Panzenböck. 5632 5633 - Issue #4473: Add a POP3.stls() to switch a clear-text POP3 session into 5634 an encrypted POP3 session, on supported servers. Patch by Lorenzo Catucci. 5635 5636 - Issue #4473: Add a POP3.capa() method to query the capabilities advertised 5637 by the POP3 server. Patch by Lorenzo Catucci. 5638 5639 - Issue #4473: Ensure the socket is shutdown cleanly in POP3.close(). 5640 Patch by Lorenzo Catucci. 5641 5642 - Issue #16522: added FAIL_FAST flag to doctest. 5643 5644 - Issue #15627: Add the importlib.abc.InspectLoader.source_to_code() method. 5645 5646 - Issue #16408: Fix file descriptors not being closed in error conditions 5647 in the zipfile module. Patch by Serhiy Storchaka. 5648 5649 - Issue #14631: Add a new :class:`weakref.WeakMethod` to simulate weak 5650 references to bound methods. 5651 5652 - Issue #16469: Fix exceptions from float -> Fraction and Decimal -> Fraction 5653 conversions for special values to be consistent with those for float -> int 5654 and Decimal -> int. Patch by Alexey Kachayev. 5655 5656 - Issue #16481: multiprocessing no longer leaks process handles on Windows. 5657 5658 - Issue #12428: Add a pure Python implementation of functools.partial(). 5659 Patch by Brian Thorne. 5660 5661 - Issue #16140: The subprocess module no longer double closes its child 5662 subprocess.PIPE parent file descriptors on child error prior to exec(). 5663 5664 - Remove a bare print to stdout from the subprocess module that could have 5665 happened if the child process wrote garbage to its pre-exec error pipe. 5666 5667 - The subprocess module now raises its own SubprocessError instead of a 5668 RuntimeError in various error situations which should not normally happen. 5669 5670 - Issue #16327: The subprocess module no longer leaks file descriptors 5671 used for stdin/stdout/stderr pipes to the child when fork() fails. 5672 5673 - Issue #14396: Handle the odd rare case of waitpid returning 0 when not 5674 expected in subprocess.Popen.wait(). 5675 5676 - Issue #16411: Fix a bug where zlib.decompressobj().flush() might try to access 5677 previously-freed memory. Patch by Serhiy Storchaka. 5678 5679 - Issue #16357: fix calling accept() on a SSLSocket created through 5680 SSLContext.wrap_socket(). Original patch by Jeff McNeil. 5681 5682 - Issue #16409: The reporthook callback made by the legacy 5683 urllib.request.urlretrieve API now properly supplies a constant non-zero 5684 block_size as it did in Python 3.2 and 2.7. This matches the behavior of 5685 urllib.request.URLopener.retrieve. 5686 5687 - Issue #16431: Use the type information when constructing a Decimal subtype 5688 from a Decimal argument. 5689 5690 - Issue #15641: Clean up deprecated classes from importlib. 5691 Patch by Taras Lyapun. 5692 5693 - Issue #16350: zlib.decompressobj().decompress() now accumulates data from 5694 successive calls after EOF in unused_data, instead of only saving the argument 5695 to the last call. decompressobj().flush() now correctly sets unused_data and 5696 unconsumed_tail. A bug in the handling of MemoryError when setting the 5697 unconsumed_tail attribute has also been fixed. Patch by Serhiy Storchaka. 5698 5699 - Issue #12759: sre_parse now raises a proper error when the name of the group 5700 is missing. Initial patch by Serhiy Storchaka. 5701 5702 - Issue #16152: fix tokenize to ignore whitespace at the end of the code when 5703 no newline is found. Patch by Ned Batchelder. 5704 5705 - Issue #16284: Prevent keeping unnecessary references to worker functions 5706 in concurrent.futures ThreadPoolExecutor. 5707 5708 - Issue #16230: Fix a crash in select.select() when one the lists changes 5709 size while iterated on. Patch by Serhiy Storchaka. 5710 5711 - Issue #16228: Fix a crash in the json module where a list changes size 5712 while it is being encoded. Patch by Serhiy Storchaka. 5713 5714 - Issue #16351: New function gc.get_stats() returns per-generation collection 5715 statistics. 5716 5717 - Issue #14897: Enhance error messages of struct.pack and 5718 struct.pack_into. Patch by Matti Mäki. 5719 5720 - Issue #16316: mimetypes now recognizes the .xz and .txz (.tar.xz) extensions. 5721 Patch by Serhiy Storchaka. 5722 5723 - Issue #12890: cgitb no longer prints spurious <p> tags in text 5724 mode when the logdir option is specified. 5725 5726 - Issue #16307: Fix multiprocessing.Pool.map_async not calling its callbacks. 5727 Patch by Janne Karila. 5728 5729 - Issue #16305: Fix a segmentation fault occurring when interrupting 5730 math.factorial. 5731 5732 - Issue #16116: Fix include and library paths to be correct when building C 5733 extensions in venvs. 5734 5735 - Issue #16245: Fix the value of a few entities in html.entities.html5. 5736 5737 - Issue #16301: Fix the localhost verification in urllib/request.py for file:// 5738 urls. 5739 5740 - Issue #16250: Fix the invocations of URLError which had misplaced filename 5741 attribute for exception. 5742 5743 - Issue #10836: Fix exception raised when file not found in urlretrieve 5744 Initial patch by Ezio Melotti. 5745 5746 - Issue #14398: Fix size truncation and overflow bugs in the bz2 module. 5747 5748 - Issue #12692: Fix resource leak in urllib.request when talking to an HTTP 5749 server that does not include a ``Connection: close`` header in its responses. 5750 5751 - Issue #12034: Fix bogus caching of result in check_GetFinalPathNameByHandle. 5752 Patch by Atsuo Ishimoto. 5753 5754 - Improve performance of `lzma.LZMAFile` (see also issue #16034). 5755 5756 - Issue #16220: wsgiref now always calls close() on an iterable response. 5757 Patch by Brent Tubbs. 5758 5759 - Issue #16270: urllib may hang when used for retrieving files via FTP by using 5760 a context manager. Patch by Giampaolo Rodola'. 5761 5762 - Issue #16461: Wave library should be able to deal with 4GB wav files, 5763 and sample rate of 44100 Hz. 5764 5765 - Issue #16176: Properly identify Windows 8 via platform.platform() 5766 5767 - Issue #16088: BaseHTTPRequestHandler's send_error method includes a 5768 Content-Length header in it's response now. Patch by Antoine Pitrou. 5769 5770 - Issue #16114: The subprocess module no longer provides a misleading error 5771 message stating that args[0] did not exist when either the cwd or executable 5772 keyword arguments specified a path that did not exist. 5773 5774 - Issue #16169: Fix ctypes.WinError()'s confusion between errno and winerror. 5775 5776 - Issue #16110: logging.fileConfig now accepts a pre-initialised ConfigParser 5777 instance. 5778 5779 - Issue #1492704: shutil.copyfile() raises a distinct SameFileError now if 5780 source and destination are the same file. Patch by Atsuo Ishimoto. 5781 5782 - Issue #13896: Make shelf instances work with 'with' as context managers. 5783 Original patch by Filip Gruszczyński. 5784 5785 - Issue #15417: Add support for csh and fish in venv activation scripts. 5786 5787 - Issue #14377: ElementTree.write and some of the module-level functions have 5788 a new parameter - *short_empty_elements*. It controls how elements with no 5789 contents are emitted. 5790 5791 - Issue #16089: Allow ElementTree.TreeBuilder to work again with a non-Element 5792 element_factory (fixes a regression in SimpleTAL). 5793 5794 - Issue #9650: List commonly used format codes in time.strftime and 5795 time.strptime docsttings. Original patch by Mike Hoy. 5796 5797 - Issue #15452: logging configuration socket listener now has a verify option 5798 that allows an application to apply a verification function to the 5799 received configuration data before it is acted upon. 5800 5801 - Issue #16034: Fix performance regressions in the new `bz2.BZ2File` 5802 implementation. Initial patch by Serhiy Storchaka. 5803 5804 - `pty.spawn()` now returns the child process status returned by `os.waitpid()`. 5805 5806 - Issue #15756: `subprocess.poll()` now properly handles `errno.ECHILD` to 5807 return a returncode of 0 when the child has already exited or cannot be waited 5808 on. 5809 5810 - Issue #15323: Improve failure message of `Mock.assert_called_once_with()`. 5811 5812 - Issue #16064: ``unittest -m`` claims executable is "python", not "python3". 5813 5814 - Issue #12376: Pass on parameters in `TextTestResult.__init__()` super call. 5815 5816 - Issue #15222: Insert blank line after each message in mbox mailboxes. 5817 5818 - Issue #16013: Fix `csv.Reader` parsing issue with ending quote characters. 5819 Patch by Serhiy Storchaka. 5820 5821 - Issue #15421: Fix an OverflowError in `Calendar.itermonthdates()` after 5822 `datetime.MAXYEAR`. Patch by Cédric Krier. 5823 5824 - Issue #16112: platform.architecture does not correctly escape argument to 5825 /usr/bin/file. Patch by David Benjamin. 5826 5827 - Issue #15970: `xml.etree.ElementTree` now serializes correctly the empty HTML 5828 elements 'meta' and 'param'. 5829 5830 - Issue #15842: The `SocketIO.{readable,writable,seekable}` methods now raise 5831 ValueError when the file-like object is closed. Patch by Alessandro Moura. 5832 5833 - Issue #15876: Fix a refleak in the `curses` module: window.encoding. 5834 5835 - Issue #15881: Fix `atexit` hook in `multiprocessing`. Original patch by Chris 5836 McDonough. 5837 5838 - Issue #15841: The readable(), writable() and seekable() methods of 5839 `io.BytesIO` and `io.StringIO` objects now raise ValueError when the object 5840 has been closed. Patch by Alessandro Moura. 5841 5842 - Issue #15447: Use `subprocess.DEVNULL` in webbrowser, instead of opening 5843 `os.devnull` explicitly and leaving it open. 5844 5845 - Issue #15509: `webbrowser.UnixBrowser` no longer passes empty arguments to 5846 Popen when ``%action`` substitutions produce empty strings. 5847 5848 - Issue #12776, issue #11839: Call `argparse` type function (specified by 5849 add_argument) only once. Before, the type function was called twice in the 5850 case where the default was specified and the argument was given as well. This 5851 was especially problematic for the FileType type, as a default file would 5852 always be opened, even if a file argument was specified on the command line. 5853 5854 - Issue #15906: Fix a regression in argparse caused by the preceding change, 5855 when ``action='append'``, ``type='str'`` and ``default=[]``. 5856 5857 - Issue #16113: Added sha3 module based on the Keccak reference implementation 5858 3.2. The `hashlib` module has four additional hash algorithms: `sha3_224`, 5859 `sha3_256`, `sha3_384` and `sha3_512`. As part of the patch some common 5860 code was moved from _hashopenssl.c to hashlib.h. 5861 5862 - ctypes.call_commethod was removed, since its only usage was in the defunct 5863 samples directory. 5864 5865 - Issue #16692: Added TLSv1.1 and TLSv1.2 support for the ssl modules. 5866 5867 - Issue #16832: add abc.get_cache_token() to expose cache validity checking 5868 support in ABCMeta. 5869 5870 IDLE 5871 ---- 5872 5873 - Issue #18429: Format / Format Paragraph, now works when comment blocks 5874 are selected. As with text blocks, this works best when the selection 5875 only includes complete lines. 5876 5877 - Issue #18226: Add docstrings and unittests for FormatParagraph.py. 5878 Original patches by Todd Rovito and Phil Webster. 5879 5880 - Issue #18279: Format - Strip trailing whitespace no longer marks a file as 5881 changed when it has not been changed. This fix followed the addition of a 5882 test file originally written by Phil Webster (the issue's main goal). 5883 5884 - Issue #7136: In the Idle File menu, "New Window" is renamed "New File". 5885 Patch by Tal Einat, Roget Serwy, and Todd Rovito. 5886 5887 - Remove dead imports of imp. 5888 5889 - Issue #18196: Avoid displaying spurious SystemExit tracebacks. 5890 5891 - Issue #5492: Avoid traceback when exiting IDLE caused by a race condition. 5892 5893 - Issue #17511: Keep IDLE find dialog open after clicking "Find Next". 5894 Original patch by Sarah K. 5895 5896 - Issue #18055: Move IDLE off of imp and on to importlib. 5897 5898 - Issue #15392: Create a unittest framework for IDLE. 5899 Initial patch by Rajagopalasarma Jayakrishnan. 5900 See Lib/idlelib/idle_test/README.txt for how to run Idle tests. 5901 5902 - Issue #14146: Highlight source line while debugging on Windows. 5903 5904 - Issue #17838: Allow sys.stdin to be reassigned. 5905 5906 - Issue #13495: Avoid loading the color delegator twice in IDLE. 5907 5908 - Issue #17798: Allow IDLE to edit new files when specified on command line. 5909 5910 - Issue #14735: Update IDLE docs to omit "Control-z on Windows". 5911 5912 - Issue #17532: Always include Options menu for IDLE on OS X. 5913 Patch by Guilherme Simões. 5914 5915 - Issue #17585: Fixed IDLE regression. Now closes when using exit() or quit(). 5916 5917 - Issue #17657: Show full Tk version in IDLE's about dialog. 5918 Patch by Todd Rovito. 5919 5920 - Issue #17613: Prevent traceback when removing syntax colorizer in IDLE. 5921 5922 - Issue #1207589: Backwards-compatibility patch for right-click menu in IDLE. 5923 5924 - Issue #16887: IDLE now accepts Cancel in tabify/untabify dialog box. 5925 5926 - Issue #17625: In IDLE, close the replace dialog after it is used. 5927 5928 - Issue #14254: IDLE now handles readline correctly across shell restarts. 5929 5930 - Issue #17614: IDLE no longer raises exception when quickly closing a file. 5931 5932 - Issue #6698: IDLE now opens just an editor window when configured to do so. 5933 5934 - Issue #8900: Using keyboard shortcuts in IDLE to open a file no longer 5935 raises an exception. 5936 5937 - Issue #6649: Fixed missing exit status in IDLE. Patch by Guilherme Polo. 5938 5939 - Issue #17114: IDLE now uses non-strict config parser. 5940 5941 - Issue #9290: In IDLE the sys.std* streams now implement io.TextIOBase 5942 interface and support all mandatory methods and properties. 5943 5944 - Issue #5066: Update IDLE docs. Patch by Todd Rovito. 5945 5946 - Issue #16829: IDLE printing no longer fails if there are spaces or other 5947 special characters in the file path. 5948 5949 - Issue #16491: IDLE now prints chained exception tracebacks. 5950 5951 - Issue #16819: IDLE method completion now correctly works for bytes literals. 5952 5953 - Issue #16504: IDLE now catches SyntaxErrors raised by tokenizer. Patch by 5954 Roger Serwy. 5955 5956 - Issue #16511: Use default IDLE width and height if config param is not valid. 5957 Patch Serhiy Storchaka. 5958 5959 - Issue #1207589: Add Cut/Copy/Paste items to IDLE right click Context Menu. 5960 Patch by Todd Rovito. 5961 5962 - Issue #16123: IDLE - deprecate running without a subprocess. 5963 Patch by Roger Serwy. 5964 5965 Tests 5966 ----- 5967 5968 - Issue #1666318: Add a test that shutil.copytree() retains directory 5969 permissions. Patch by Catherine Devlin. 5970 5971 - Issue #18273: move the tests in Lib/test/json_tests to Lib/test/test_json 5972 and make them discoverable by unittest. Patch by Zachary Ware. 5973 5974 - Fix a fcntl test case on KFreeBSD, Debian #708653 (Petr Salinger). 5975 5976 - Issue #18396: Fix spurious test failure in test_signal on Windows when 5977 faulthandler is enabled (Patch by Jeremy Kloth) 5978 5979 - Issue #17046: Fix broken test_executable_without_cwd in test_subprocess. 5980 5981 - Issue #15415: Add new temp_dir() and change_cwd() context managers to 5982 test.support, and refactor temp_cwd() to use them. Patch by Chris Jerdonek. 5983 5984 - Issue #15494: test.support is now a package rather than a module (Initial 5985 patch by Indra Talip) 5986 5987 - Issue #17944: test_zipfile now discoverable and uses subclassing to 5988 generate tests for different compression types. Fixed a bug with skipping 5989 some tests due to use of exhausted iterators. 5990 5991 - Issue #18266: test_largefile now works with unittest test discovery and 5992 supports running only selected tests. Patch by Zachary Ware. 5993 5994 - Issue #17767: test_locale now works with unittest test discovery. 5995 Original patch by Zachary Ware. 5996 5997 - Issue #18375: Assume --randomize when --randseed is used for running the 5998 testsuite. 5999 6000 - Issue #11185: Fix test_wait4 under AIX. Patch by Sébastien Sablé. 6001 6002 - Issue #18207: Fix test_ssl for some versions of OpenSSL that ignore seconds 6003 in ASN1_TIME fields. 6004 6005 - Issue #18094: test_uuid no longer reports skipped tests as passed. 6006 6007 - Issue #17992: Add timeouts to asyncore and asynchat tests so that they won't 6008 accidentally hang. 6009 6010 - Issue #17833: Fix test_gdb failures seen on machines where debug symbols 6011 for glibc are available (seen on PPC64 Linux). 6012 6013 - Issue #7855: Add tests for ctypes/winreg for issues found in IronPython. 6014 Initial patch by Dino Viehland. 6015 6016 - Issue #11078: test___all__ now checks for duplicates in __all__. 6017 Initial patch by R. David Murray. 6018 6019 - Issue #17712: Fix test_gdb failures on Ubuntu 13.04. 6020 6021 - Issue #17835: Fix test_io when the default OS pipe buffer size is larger 6022 than one million bytes. 6023 6024 - Issue #17065: Use process-unique key for winreg tests to avoid failures if 6025 test is run multiple times in parallel (eg: on a buildbot host). 6026 6027 - Issue #12820: add tests for the xml.dom.minicompat module. 6028 Patch by John Chandler and Phil Connell. 6029 6030 - Issue #17691: test_univnewlines now works with unittest test discovery. 6031 Patch by Zachary Ware. 6032 6033 - Issue #17790: test_set now works with unittest test discovery. 6034 Patch by Zachary Ware. 6035 6036 - Issue #17789: test_random now works with unittest test discovery. 6037 Patch by Zachary Ware. 6038 6039 - Issue #17779: test_osx_env now works with unittest test discovery. 6040 Patch by Zachary Ware. 6041 6042 - Issue #17766: test_iterlen now works with unittest test discovery. 6043 Patch by Zachary Ware. 6044 6045 - Issue #17690: test_time now works with unittest test discovery. 6046 Patch by Zachary Ware. 6047 6048 - Issue #17692: test_sqlite now works with unittest test discovery. 6049 Patch by Zachary Ware. 6050 6051 - Issue #11995: test_pydoc doesn't import all sys.path modules anymore. 6052 6053 - Issue #17448: test_sax now skips if there are no xml parsers available 6054 instead of raising an ImportError. 6055 6056 - Issue #11420: make test suite pass with -B/DONTWRITEBYTECODE set. 6057 Initial patch by Thomas Wouters. 6058 6059 - Issue #10652: make tcl/tk tests run after __all__ test, patch by 6060 Zachary Ware. 6061 6062 - Issue #11963: remove human verification from test_parser and test_subprocess. 6063 6064 - Issue #11732: add a new suppress_crash_popup() context manager to test.support 6065 that disables crash popups on Windows and use it in test_faulthandler and 6066 test_capi. 6067 6068 - Issue #13898: test_ssl no longer prints a spurious stack trace on Ubuntu. 6069 6070 - Issue #17283: Share code between `__main__.py` and `regrtest.py` in 6071 `Lib/test`. 6072 6073 - Issue #17249: convert a test in test_capi to use unittest and reap threads. 6074 6075 - Issue #17107: Test client-side SNI support in urllib.request thanks to 6076 the new server-side SNI support in the ssl module. Initial patch by 6077 Daniel Black. 6078 6079 - Issue #17041: Fix testing when Python is configured with the 6080 --without-doc-strings. 6081 6082 - Issue #16923: Fix ResourceWarnings in test_ssl. 6083 6084 - Issue #15539: Added regression tests for Tools/scripts/pindent.py. 6085 6086 - Issue #17479: test_io now works with unittest test discovery. 6087 Patch by Zachary Ware. 6088 6089 - Issue #17066: test_robotparser now works with unittest test discovery. 6090 Patch by Zachary Ware. 6091 6092 - Issue #17334: test_index now works with unittest test discovery. 6093 Patch by Zachary Ware. 6094 6095 - Issue #17333: test_imaplib now works with unittest test discovery. 6096 Patch by Zachary Ware. 6097 6098 - Issue #17082: test_dbm* now work with unittest test discovery. 6099 Patch by Zachary Ware. 6100 6101 - Issue #17079: test_ctypes now works with unittest test discovery. 6102 Patch by Zachary Ware. 6103 6104 - Issue #17304: test_hash now works with unittest test discovery. 6105 Patch by Zachary Ware. 6106 6107 - Issue #17303: test_future* now work with unittest test discovery. 6108 Patch by Zachary Ware. 6109 6110 - Issue #17163: test_file now works with unittest test discovery. 6111 Patch by Zachary Ware. 6112 6113 - Issue #16925: test_configparser now works with unittest test discovery. 6114 Patch by Zachary Ware. 6115 6116 - Issue #16918: test_codecs now works with unittest test discovery. 6117 Patch by Zachary Ware. 6118 6119 - Issue #16919: test_crypt now works with unittest test discovery. 6120 Patch by Zachary Ware. 6121 6122 - Issue #16910: test_bytes, test_unicode, and test_userstring now work with 6123 unittest test discovery. Patch by Zachary Ware. 6124 6125 - Issue #16905: test_warnings now works with unittest test discovery. 6126 Initial patch by Berker Peksag. 6127 6128 - Issue #16898: test_bufio now works with unittest test discovery. 6129 Patch by Zachary Ware. 6130 6131 - Issue #16888: test_array now works with unittest test discovery. 6132 Patch by Zachary Ware. 6133 6134 - Issue #16896: test_asyncore now works with unittest test discovery. 6135 Patch by Zachary Ware. 6136 6137 - Issue #16897: test_bisect now works with unittest test discovery. 6138 Initial patch by Zachary Ware. 6139 6140 - Issue #16852: test_genericpath, test_posixpath, test_ntpath, and test_macpath 6141 now work with unittest test discovery. Patch by Zachary Ware. 6142 6143 - Issue #16748: test_heapq now works with unittest test discovery. 6144 6145 - Issue #10646: Tests rearranged for os.samefile/samestat to check for not 6146 just symlinks but also hard links. 6147 6148 - Issue #15302: Switch regrtest from using getopt to using argparse. 6149 6150 - Issue #15324: Fix regrtest parsing of --fromfile, --match, and --randomize 6151 options. 6152 6153 - Issue #16702: test_urllib2_localnet tests now correctly ignores proxies for 6154 localhost tests. 6155 6156 - Issue #16664: Add regression tests for glob's behaviour concerning entries 6157 starting with a ".". Patch by Sebastian Kreft. 6158 6159 - Issue #13390: The ``-R`` option to regrtest now also checks for memory 6160 allocation leaks, using :func:`sys.getallocatedblocks()`. 6161 6162 - Issue #16559: Add more tests for the json module, including some from the 6163 official test suite at json.org. Patch by Serhiy Storchaka. 6164 6165 - Issue #16661: Fix the `os.getgrouplist()` test by not assuming that it gives 6166 the same output as :command:`id -G`. 6167 6168 - Issue #16115: Add some tests for the executable argument to 6169 subprocess.Popen(). Initial patch by Kushal Das. 6170 6171 - Issue #16126: PyErr_Format format mismatch in _testcapimodule.c. 6172 Patch by Serhiy Storchaka. 6173 6174 - Issue #15304: Fix warning message when `os.chdir()` fails inside 6175 `test.support.temp_cwd()`. Patch by Chris Jerdonek. 6176 6177 - Issue #15802: Fix test logic in `TestMaildir.test_create_tmp()`. Patch by 6178 Serhiy Storchaka. 6179 6180 - Issue #15557: Added a test suite for the webbrowser module, thanks to Anton 6181 Barkovsky. 6182 6183 - Issue #16698: Skip posix test_getgroups when built with OS X 6184 deployment target prior to 10.6. 6185 6186 Build 6187 ----- 6188 6189 - Issue #16067: Add description into MSI file to replace installer's 6190 temporary name. 6191 6192 - Issue #18257: Fix readlink usage in python-config. Install the python 6193 version again on Darwin. 6194 6195 - Issue #18481: Add C coverage reporting with gcov and lcov. A new make target 6196 "coverage-report" creates an instrumented Python build, runs unit tests 6197 and creates a HTML. The report can be updated with "make coverage-lcov". 6198 6199 - Issue #17845: Clarified the message printed when some module are not built. 6200 6201 - Issue #18256: Compilation fix for recent AIX releases. Patch by 6202 David Edelsohn. 6203 6204 - Issue #17547: In configure, explicitly pass -Wformat for the benefit for GCC 6205 4.8. 6206 6207 - Issue #15172: Document NASM 2.10+ as requirement for building OpenSSL 1.0.1 6208 on Windows. 6209 6210 - Issue #17591: Use lowercase filenames when including Windows header files. 6211 Patch by Roumen Petrov. 6212 6213 - Issue #17550: Fix the --enable-profiling configure switch. 6214 6215 - Issue #17425: Build with openssl 1.0.1d on Windows. 6216 6217 - Issue #16754: Fix the incorrect shared library extension on linux. Introduce 6218 two makefile macros SHLIB_SUFFIX and EXT_SUFFIX. SO now has the value of 6219 SHLIB_SUFFIX again (as in 2.x and 3.1). The SO macro is removed in 3.4. 6220 6221 - Issue #5033: Fix building of the sqlite3 extension module when the 6222 SQLite library version has "beta" in it. Patch by Andreas Pelme. 6223 6224 - Issue #17228: Fix building without pymalloc. 6225 6226 - Issue #3718: Use AC_ARG_VAR to set MACHDEP in configure.ac. 6227 6228 - Issue #16235: Implement python-config as a shell script. 6229 6230 - Issue #16769: Remove outdated Visual Studio projects. 6231 6232 - Issue #17031: Fix running regen in cross builds. 6233 6234 - Issue #3754: fix typo in pthread AC_CACHE_VAL. 6235 6236 - Issue #15484: Fix _PYTHON_PROJECT_BASE for srcdir != builddir builds; 6237 use _PYTHON_PROJECT_BASE in distutils/sysconfig.py. 6238 6239 - Drop support for Windows 2000 (changeset e52df05b496a). 6240 6241 - Issue #17029: Let h2py search the multiarch system include directory. 6242 6243 - Issue #16953: Fix socket module compilation on platforms with 6244 HAVE_BROKEN_POLL. Patch by Jeffrey Armstrong. 6245 6246 - Issue #16320: Remove redundant Makefile dependencies for strings and bytes. 6247 6248 - Cross compiling needs host and build settings. configure no longer 6249 creates a broken PYTHON_FOR_BUILD variable when --build is missing. 6250 6251 - Fix cross compiling issue in setup.py, ensure that lib_dirs and inc_dirs are 6252 defined in cross compiling mode, too. 6253 6254 - Issue #16836: Enable IPv6 support even if IPv6 is disabled on the build host. 6255 6256 - Issue #16593: Have BSD 'make -s' do the right thing, thanks to Daniel Shahaf 6257 6258 - Issue #16262: fix out-of-src-tree builds, if mercurial is not installed. 6259 6260 - Issue #15298: ensure _sysconfigdata is generated in build directory, not 6261 source directory. 6262 6263 - Issue #15833: Fix a regression in 3.3 that resulted in exceptions being 6264 raised if importlib failed to write byte-compiled files. This affected 6265 attempts to build Python out-of-tree from a read-only source directory. 6266 6267 - Issue #15923: Fix a mistake in ``asdl_c.py`` that resulted in a TypeError 6268 after 2801bf875a24 (see #15801). 6269 6270 - Issue #16135: Remove OS/2 support. 6271 6272 - Issue #15819: Make sure we can build Python out-of-tree from a read-only 6273 source directory. (Somewhat related to issue #9860.) 6274 6275 - Issue #15587: Enable Tk high-resolution text rendering on Macs with 6276 Retina displays. Applies to Tkinter apps, such as IDLE, on OS X 6277 framework builds linked with Cocoa Tk 8.5. 6278 6279 - Issue #17161: make install now also installs a python3 man page. 6280 6281 C-API 6282 ----- 6283 6284 - Issue #18351: Fix various issues in a function in importlib provided to help 6285 PyImport_ExecCodeModuleWithPathnames() (and thus by extension 6286 PyImport_ExecCodeModule() and PyImport_ExecCodeModuleEx()). 6287 6288 - Issue #9369: The types of `char*` arguments of PyObject_CallFunction() and 6289 PyObject_CallMethod() now changed to `const char*`. Based on patches by 6290 Jörg Müller and Lars Buitinck. 6291 6292 - Issue #17206: Py_CLEAR(), Py_DECREF(), Py_XINCREF() and Py_XDECREF() now 6293 expand their arguments once instead of multiple times. Patch written by Illia 6294 Polosukhin. 6295 6296 - Issue #17522: Add the PyGILState_Check() API. 6297 6298 - Issue #17327: Add PyDict_SetDefault. 6299 6300 - Issue #16881: Fix Py_ARRAY_LENGTH macro for GCC < 3.1. 6301 6302 - Issue #16505: Remove unused Py_TPFLAGS_INT_SUBCLASS. 6303 6304 - Issue #16086: PyTypeObject.tp_flags and PyType_Spec.flags are now unsigned 6305 (unsigned long and unsigned int) to avoid an undefined behaviour with 6306 Py_TPFLAGS_TYPE_SUBCLASS ((1 << 31). PyType_GetFlags() result type is 6307 now unsigned too (unsigned long, instead of long). 6308 6309 - Issue #16166: Add PY_LITTLE_ENDIAN and PY_BIG_ENDIAN macros and unified 6310 endianness detection and handling. 6311 6312 Documentation 6313 ------------- 6314 6315 - Issue #17701: Improving strftime documentation. 6316 6317 - Issue #18440: Clarify that `hash()` can truncate the value returned from an 6318 object's custom `__hash__()` method. 6319 6320 - Issue #17844: Add links to encoders and decoders for bytes-to-bytes codecs. 6321 6322 - Issue #14097: improve the "introduction" page of the tutorial. 6323 6324 - Issue #17977: The documentation for the cadefault argument's default value 6325 in urllib.request.urlopen() is fixed to match the code. 6326 6327 - Issue #6696: add documentation for the Profile objects, and improve 6328 profile/cProfile docs. Patch by Tom Pinckney. 6329 6330 - Issue #15940: Specify effect of locale on time functions. 6331 6332 - Issue #17538: Document XML vulnerabilties 6333 6334 - Issue #16642: sched.scheduler timefunc initial default is time.monotonic. 6335 Patch by Ramchandra Apte 6336 6337 - Issue #17047: remove doubled words in docs and docstrings 6338 reported by Serhiy Storchaka and Matthew Barnett. 6339 6340 - Issue #15465: Document the versioning macros in the C API docs rather than 6341 the standard library docs. Patch by Kushal Das. 6342 6343 - Issue #16406: Combine the pages for uploading and registering to PyPI. 6344 6345 - Issue #16403: Document how distutils uses the maintainer field in 6346 PKG-INFO. Patch by Jyrki Pulliainen. 6347 6348 - Issue #16695: Document how glob handles filenames starting with a 6349 dot. Initial patch by Jyrki Pulliainen. 6350 6351 - Issue #8890: Stop advertising an insecure practice by replacing uses 6352 of the /tmp directory with better alternatives in the documentation. 6353 Patch by Geoff Wilson. 6354 6355 - Issue #17203: add long option names to unittest discovery docs. 6356 6357 - Issue #13094: add "Why do lambdas defined in a loop with different values 6358 all return the same result?" programming FAQ. 6359 6360 - Issue #14901: Update portions of the Windows FAQ. 6361 Patch by Ashish Nitin Patil. 6362 6363 - Issue #16267: Better document the 3.3+ approach to combining 6364 @abstractmethod with @staticmethod, @classmethod and @property 6365 6366 - Issue #15209: Clarify exception chaining description in exceptions module 6367 documentation 6368 6369 - Issue #15990: Improve argument/parameter documentation. 6370 6371 - Issue #16209: Move the documentation for the str built-in function to a new 6372 str class entry in the "Text Sequence Type" section. 6373 6374 - Issue #13538: Improve str() and object.__str__() documentation. 6375 6376 - Issue #16489: Make it clearer that importlib.find_loader() needs parent 6377 packages to be explicitly imported. 6378 6379 - Issue #16400: Update the description of which versions of a given package 6380 PyPI displays. 6381 6382 - Issue #15677: Document that zlib and gzip accept a compression level of 0 to 6383 mean 'no compression'. Patch by Brian Brazil. 6384 6385 - Issue #16197: Update winreg docstrings and documentation to match code. 6386 Patch by Zachary Ware. 6387 6388 - Issue #8040: added a version switcher to the documentation. Patch by 6389 Yury Selivanov. 6390 6391 - Issue #16241: Document -X faulthandler command line option. 6392 Patch by Marek Šuppa. 6393 6394 - Additional comments and some style changes in the concurrent.futures URL 6395 retrieval example 6396 6397 - Issue #16115: Improve subprocess.Popen() documentation around args, shell, 6398 and executable arguments. 6399 6400 - Issue #13498: Clarify docs of os.makedirs()'s exist_ok argument. Done with 6401 great native-speaker help from R. David Murray. 6402 6403 - Issue #15533: Clarify docs and add tests for `subprocess.Popen()`'s cwd 6404 argument. 6405 6406 - Issue #15979: Improve timeit documentation. 6407 6408 - Issue #16036: Improve documentation of built-in `int()`'s signature and 6409 arguments. 6410 6411 - Issue #15935: Clarification of `argparse` docs, re: add_argument() type and 6412 default arguments. Patch contributed by Chris Jerdonek. 6413 6414 - Issue #11964: Document a change in v3.2 to the behavior of the indent 6415 parameter of json encoding operations. 6416 6417 - Issue #15116: Remove references to appscript as it is no longer being 6418 supported. 6419 6420 Tools/Demos 6421 ----------- 6422 6423 - Issue #18817: Fix a resource warning in Lib/aifc.py demo. Patch by 6424 Vajrasky Kok. 6425 6426 - Issue #18439: Make patchcheck work on Windows for ACKS, NEWS. 6427 6428 - Issue #18448: Fix a typo in Tools/demo/eiffel.py. 6429 6430 - Issue #18457: Fixed saving of formulas and complex numbers in 6431 Tools/demo/ss1.py. 6432 6433 - Issue #18449: Make Tools/demo/ss1.py work again on Python 3. Patch by 6434 Févry Thibault. 6435 6436 - Issue #12990: The "Python Launcher" on OSX could not launch python scripts 6437 that have paths that include wide characters. 6438 6439 - Issue #15239: Make mkstringprep.py work again on Python 3. 6440 6441 - Issue #17028: Allowed Python arguments to be supplied to the Windows 6442 launcher. 6443 6444 - Issue #17156: pygettext.py now detects the encoding of source files and 6445 correctly writes and escapes non-ascii characters. 6446 6447 - Issue #15539: Fix a number of bugs in Tools/scripts/pindent.py. Now 6448 pindent.py works with a "with" statement. pindent.py no longer produces 6449 improper indentation. pindent.py now works with continued lines broken after 6450 "class" or "def" keywords and with continuations at the start of line. 6451 6452 - Issue #11797: Add a 2to3 fixer that maps reload() to imp.reload(). 6453 6454 - Issue #10966: Remove the concept of unexpected skipped tests. 6455 6456 - Issue #9893: Removed the Misc/Vim directory. 6457 6458 - Removed the Misc/TextMate directory. 6459 6460 - Issue #16245: Add the Tools/scripts/parse_html5_entities.py script to parse 6461 the list of HTML5 entities and update the html.entities.html5 dictionary. 6462 6463 - Issue #15378: Fix Tools/unicode/comparecodecs.py. Patch by Serhiy Storchaka. 6464 6465 - Issue #16549: Make json.tool work again on Python 3 and add tests. 6466 Initial patch by Berker Peksag and Serhiy Storchaka. 6467 6468 - Issue #13301: use ast.literal_eval() instead of eval() in Tools/i18n/msgfmt.py. 6469 Patch by Serhiy Storchaka. 6470 6471 Windows 6472 ------- 6473 6474 - Issue #18569: The installer now adds .py to the PATHEXT variable when extensions 6475 are registered. Patch by Paul Moore. 6476 6477 6478 What's New in Python 3.3.0? 6479 =========================== 6480 6481 *Release date: 29-Sep-2012* 6482 6483 Core and Builtins 6484 ----------------- 6485 6486 - Issue #16046: Fix loading sourceless legacy .pyo files. 6487 6488 - Issue #16060: Fix refcounting bug when `__trunc__()` returns an object whose 6489 `__int__()` gives a non-integer. Patch by Serhiy Storchaka. 6490 6491 Extension Modules 6492 ----------------- 6493 6494 - Issue #16012: Fix a regression in pyexpat. The parser's `UseForeignDTD()` 6495 method doesn't require an argument again. 6496 6497 6498 What's New in Python 3.3.0 Release Candidate 3? 6499 =============================================== 6500 6501 *Release date: 23-Sep-2012* 6502 6503 Core and Builtins 6504 ----------------- 6505 6506 - Issue #15900: Fix reference leak in `PyUnicode_TranslateCharmap()`. 6507 6508 - Issue #15926: Fix crash after multiple reinitializations of the interpreter. 6509 6510 - Issue #15895: Fix FILE pointer leak in one error branch of 6511 `PyRun_SimpleFileExFlags()` when filename points to a pyc/pyo file, closeit is 6512 false an and set_main_loader() fails. 6513 6514 - Fixes for a few crash and memory leak regressions found by Coverity. 6515 6516 Library 6517 ------- 6518 6519 - Issue #15882: Change `_decimal` to accept any coefficient tuple when 6520 constructing infinities. This is done for backwards compatibility with 6521 decimal.py: Infinity coefficients are undefined in _decimal (in accordance 6522 with the specification). 6523 6524 - Issue #15925: Fix a regression in `email.util` where the `parsedate()` and 6525 `parsedate_tz()` functions did not return None anymore when the argument could 6526 not be parsed. 6527 6528 Extension Modules 6529 ----------------- 6530 6531 - Issue #15973: Fix a segmentation fault when comparing datetime timezone 6532 objects. 6533 6534 - Issue #15977: Fix memory leak in Modules/_ssl.c when the function 6535 _set_npn_protocols() is called multiple times, thanks to Daniel Sommermann. 6536 6537 - Issue #15969: `faulthandler` module: rename dump_tracebacks_later() to 6538 dump_traceback_later() and cancel_dump_tracebacks_later() to 6539 cancel_dump_traceback_later(). 6540 6541 - _decimal module: use only C 89 style comments. 6542 6543 6544 What's New in Python 3.3.0 Release Candidate 2? 6545 =============================================== 6546 6547 *Release date: 09-Sep-2012* 6548 6549 Core and Builtins 6550 ----------------- 6551 6552 - Issue #13992: The trashcan mechanism is now thread-safe. This eliminates 6553 sporadic crashes in multi-thread programs when several long deallocator chains 6554 ran concurrently and involved subclasses of built-in container types. 6555 6556 - Issue #15784: Modify `OSError`.__str__() to better distinguish between errno 6557 error numbers and Windows error numbers. 6558 6559 - Issue #15781: Fix two small race conditions in import's module locking. 6560 6561 Library 6562 ------- 6563 6564 - Issue #17158: Add 'symbols' to help() welcome message; clarify 6565 'modules spam' messages. 6566 6567 - Issue #15847: Fix a regression in argparse, which did not accept tuples as 6568 argument lists anymore. 6569 6570 - Issue #15828: Restore support for C extensions in `imp.load_module()`. 6571 6572 - Issue #15340: Fix importing the random module when ``/dev/urandom`` cannot be 6573 opened. This was a regression caused by the hash randomization patch. 6574 6575 - Issue #10650: Deprecate the watchexp parameter of the `Decimal.quantize()` 6576 method. 6577 6578 - Issue #15785: Modify `window.get_wch()` API of the curses module: return a 6579 character for most keys, and an integer for special keys, instead of always 6580 returning an integer. So it is now possible to distinguish special keys like 6581 keypad keys. 6582 6583 - Issue #14223: Fix `window.addch()` of the curses module for special characters 6584 like curses.ACS_HLINE: the Python function addch(int) and addch(bytes) is now 6585 calling the C function waddch()/mvwaddch() (as it was done in Python 3.2), 6586 instead of wadd_wch()/mvwadd_wch(). The Python function addch(str) is still 6587 calling the C function wadd_wch()/mvwadd_wch() if the Python curses is linked 6588 to libncursesw. 6589 6590 Build 6591 ----- 6592 6593 - Issue #15822: Really ensure 2to3 grammar pickles are properly installed 6594 (replaces fixes for Issue #15645). 6595 6596 Documentation 6597 ------------- 6598 6599 - Issue #15814: The memoryview enhancements in 3.3.0 accidentally permitted the 6600 hashing of multi-dimensional memorviews and memoryviews with multi-byte item 6601 formats. The intended restrictions have now been documented - they will be 6602 correctly enforced in 3.3.1. 6603 6604 6605 What's New in Python 3.3.0 Release Candidate 1? 6606 =============================================== 6607 6608 *Release date: 25-Aug-2012* 6609 6610 Core and Builtins 6611 ----------------- 6612 6613 - Issue #15573: memoryview comparisons are now performed by value with full 6614 support for any valid struct module format definition. 6615 6616 - Issue #15316: When an item in the fromlist for `__import__()` doesn't exist, 6617 don't raise an error, but if an exception is raised as part of an import do 6618 let that propagate. 6619 6620 - Issue #15778: Ensure that ``str(ImportError(msg))`` returns a str even when 6621 msg isn't a str. 6622 6623 - Issue #2051: Source file permission bits are once again correctly copied to 6624 the cached bytecode file. (The migration to importlib reintroduced this 6625 problem because these was no regression test. A test has been added as part of 6626 this patch) 6627 6628 - Issue #15761: Fix crash when ``PYTHONEXECUTABLE`` is set on Mac OS X. 6629 6630 - Issue #15726: Fix incorrect bounds checking in PyState_FindModule. Patch by 6631 Robin Schreiber. 6632 6633 - Issue #15604: Update uses of `PyObject_IsTrue()` to check for and handle 6634 errors correctly. Patch by Serhiy Storchaka. 6635 6636 - Issue #14846: `importlib.FileFinder` now handles the case where the directory 6637 being searched is removed after a previous import attempt. 6638 6639 Library 6640 ------- 6641 6642 - Issue #13370: Ensure that ctypes works on Mac OS X when Python is compiled 6643 using the clang compiler. 6644 6645 - Issue #13072: The array module's 'u' format code is now deprecated and will be 6646 removed in Python 4.0. 6647 6648 - Issue #15544: Fix Decimal.__float__ to work with payload-carrying NaNs. 6649 6650 - Issue #15776: Allow pyvenv to work in existing directory with --clean. 6651 6652 - Issue #15249: email's BytesGenerator now correctly mangles From lines (when 6653 requested) even if the body contains undecodable bytes. 6654 6655 - Issue #15777: Fix a refleak in _posixsubprocess. 6656 6657 - Issue #665194: Update `email.utils.localtime` to use datetime.astimezone and 6658 correctly handle historic changes in UTC offsets. 6659 6660 - Issue #15199: Fix JavaScript's default MIME type to application/javascript. 6661 Patch by Bohuslav Kabrda. 6662 6663 - Issue #12643: `code.InteractiveConsole` now respects `sys.excepthook` when 6664 displaying exceptions. Patch by Aaron Iles. 6665 6666 - Issue #13579: `string.Formatter` now understands the 'a' conversion specifier. 6667 6668 - Issue #15595: Fix ``subprocess.Popen(universal_newlines=True)`` for certain 6669 locales (utf-16 and utf-32 family). Patch by Chris Jerdonek. 6670 6671 - Issue #15477: In cmath and math modules, add workaround for platforms whose 6672 system-supplied log1p function doesn't respect signs of zeros. 6673 6674 - Issue #15715: `importlib.__import__()` will silence an ImportError when the 6675 use of fromlist leads to a failed import. 6676 6677 - Issue #14669: Fix pickling of connections and sockets on Mac OS X by 6678 sending/receiving an acknowledgment after file descriptor transfer. 6679 TestPicklingConnection has been reenabled for Mac OS X. 6680 6681 - Issue #11062: Fix adding a message from file to Babyl mailbox. 6682 6683 - Issue #15646: Prevent equivalent of a fork bomb when using `multiprocessing` 6684 on Windows without the ``if __name__ == '__main__'`` idiom. 6685 6686 IDLE 6687 ---- 6688 6689 - Issue #15678: Fix IDLE menus when started from OS X command line (3.3.0b2 6690 regression). 6691 6692 Documentation 6693 ------------- 6694 6695 - Touched up the Python 2 to 3 porting guide. 6696 6697 - Issue #14674: Add a discussion of the `json` module's standard compliance. 6698 Patch by Chris Rebert. 6699 6700 - Create a 'Concurrent Execution' section in the docs, and split up the 6701 'Optional Operating System Services' section to use a more user-centric 6702 classification scheme (splitting them across the new CE section, IPC and text 6703 processing). Operating system limitations can be reflected with the Sphinx 6704 ``:platform:`` tag, it doesn't make sense as part of the Table of Contents. 6705 6706 - Issue #4966: Bring the sequence docs up to date for the Py3k transition and 6707 the many language enhancements since they were original written. 6708 6709 - The "path importer" misnomer has been replaced with Eric Snow's 6710 more-awkward-but-at-least-not-wrong suggestion of "path based finder" in the 6711 import system reference docs. 6712 6713 - Issue #15640: Document `importlib.abc.Finder` as deprecated. 6714 6715 - Issue #15630: Add an example for "continue" stmt in the tutorial. Patch by 6716 Daniel Ellis. 6717 6718 Tests 6719 ----- 6720 6721 - Issue #15747: ZFS always returns EOPNOTSUPP when attempting to set the 6722 UF_IMMUTABLE flag (via either chflags or lchflags); refactor affected tests in 6723 test_posix.py to account for this. 6724 6725 - Issue #15285: Refactor the approach for testing connect timeouts using two 6726 external hosts that have been configured specifically for this type of test. 6727 6728 - Issue #15743: Remove the deprecated method usage in `urllib` tests. Patch by 6729 Jeff Knupp. 6730 6731 - Issue #15615: Add some tests for the `json` module's handling of invalid input 6732 data. Patch by Kushal Das. 6733 6734 Build 6735 ----- 6736 6737 - Output lib files for PGO build into PGO directory. 6738 6739 - Pick up 32-bit launcher from PGO directory on 64-bit PGO build. 6740 6741 - Drop ``PC\python_nt.h`` as it's not used. Add input dependency on custom 6742 build step. 6743 6744 - Issue #15511: Drop explicit dependency on pythonxy.lib from _decimal amd64 6745 configuration. 6746 6747 - Add missing PGI/PGO configurations for pywlauncher. 6748 6749 - Issue #15645: Ensure 2to3 grammar pickles are properly installed. 6750 6751 6752 What's New in Python 3.3.0 Beta 2? 6753 ================================== 6754 6755 *Release date: 12-Aug-2012* 6756 6757 Core and Builtins 6758 ----------------- 6759 6760 - Issue #15568: Fix the return value of ``yield from`` when StopIteration is 6761 raised by a custom iterator. 6762 6763 - Issue #13119: `sys.stdout` and `sys.stderr` are now using "\r\n" newline on 6764 Windows, as Python 2. 6765 6766 - Issue #15534: Fix the fast-search function for non-ASCII Unicode strings. 6767 6768 - Issue #15508: Fix the docstring for `__import__()` to have the proper default 6769 value of 0 for 'level' and to not mention negative levels since they are not 6770 supported. 6771 6772 - Issue #15425: Eliminated traceback noise from more situations involving 6773 importlib. 6774 6775 - Issue #14578: Support modules registered in the Windows registry again. 6776 6777 - Issue #15466: Stop using TYPE_INT64 in marshal, to make importlib.h (and other 6778 byte code files) equal between 32-bit and 64-bit systems. 6779 6780 - Issue #1692335: Move initial exception args assignment to 6781 `BaseException.__new__()` to help pickling of naive subclasses. 6782 6783 - Issue #12834: Fix `PyBuffer_ToContiguous()` for non-contiguous arrays. 6784 6785 - Issue #15456: Fix code `__sizeof__()` after #12399 change. Patch by Serhiy 6786 Storchaka. 6787 6788 - Issue #15404: Refleak in PyMethodObject repr. 6789 6790 - Issue #15394: An issue in `PyModule_Create()` that caused references to be 6791 leaked on some error paths has been fixed. Patch by Julia Lawall. 6792 6793 - Issue #15368: An issue that caused bytecode generation to be non-deterministic 6794 has been fixed. 6795 6796 - Issue #15202: Consistently use the name "follow_symlinks" for new parameters 6797 in os and shutil functions. 6798 6799 - Issue #15314: ``__main__.__loader__`` is now set correctly during interpreter 6800 startup. 6801 6802 - Issue #15111: When a module imported using 'from import' has an ImportError 6803 inside itself, don't mask that fact behind a generic ImportError for the 6804 module itself. 6805 6806 - Issue #15293: Add GC support to the AST base node type. 6807 6808 - Issue #15291: Fix a memory leak where AST nodes where not properly 6809 deallocated. 6810 6811 - Issue #15110: Fix the tracebacks generated by "import xxx" to not show the 6812 importlib stack frames. 6813 6814 - Issue #16369: Global PyTypeObjects not initialized with PyType_Ready(...). 6815 6816 - Issue #15020: The program name used to search for Python's path is now 6817 "python3" under Unix, not "python". 6818 6819 - Issue #15897: zipimport.c doesn't check return value of fseek(). 6820 Patch by Felipe Cruz. 6821 6822 - Issue #15033: Fix the exit status bug when modules invoked using -m switch, 6823 return the proper failure return value (1). Patch contributed by Jeff Knupp. 6824 6825 - Issue #15229: An `OSError` subclass whose __init__ doesn't call back 6826 OSError.__init__ could produce incomplete instances, leading to crashes when 6827 calling str() on them. 6828 6829 - Issue #15307: Virtual environments now use symlinks with framework builds on 6830 Mac OS X, like other POSIX builds. 6831 6832 Library 6833 ------- 6834 6835 - Issue #14590: configparser now correctly strips inline comments when delimiter 6836 occurs earlier without preceding space. 6837 6838 - Issue #15424: Add a `__sizeof__()` implementation for array objects. Patch by 6839 Ludwig Hähne. 6840 6841 - Issue #15576: Allow extension modules to act as a package's __init__ module. 6842 6843 - Issue #15502: Have `importlib.invalidate_caches()` work on `sys.meta_path` 6844 instead of `sys.path_importer_cache`. 6845 6846 - Issue #15163: Pydoc shouldn't list __loader__ as module data. 6847 6848 - Issue #15471: Do not use mutable objects as defaults for 6849 `importlib.__import__()`. 6850 6851 - Issue #15559: To avoid a problematic failure mode when passed to the bytes 6852 constructor, objects in the ipaddress module no longer implement `__index__()` 6853 (they still implement `__int__()` as appropriate). 6854 6855 - Issue #15546: Fix handling of pathological input data in the peek() and 6856 read1() methods of the BZ2File, GzipFile and LZMAFile classes. 6857 6858 - Issue #12655: Instead of requiring a custom type, `os.sched_getaffinity()` and 6859 `os.sched_setaffinity()` now use regular sets of integers to represent the 6860 CPUs a process is restricted to. 6861 6862 - Issue #15538: Fix compilation of the `socket.getnameinfo()` / 6863 `socket.getaddrinfo()` emulation code. Patch by Philipp Hagemeister. 6864 6865 - Issue #15519: Properly expose WindowsRegistryFinder in importlib (and use the 6866 correct term for it). Original patch by Eric Snow. 6867 6868 - Issue #15502: Bring the importlib ABCs into line with the current state of the 6869 import protocols given PEP 420. Original patch by Eric Snow. 6870 6871 - Issue #15499: Launching a webbrowser in Unix used to sleep for a few seconds. 6872 Original patch by Anton Barkovsky. 6873 6874 - Issue #15463: The faulthandler module truncates strings to 500 characters, 6875 instead of 100, to be able to display long file paths. 6876 6877 - Issue #6056: Make `multiprocessing` use setblocking(True) on the sockets it 6878 uses. Original patch by J Derek Wilson. 6879 6880 - Issue #15364: Fix sysconfig.get_config_var('srcdir') to be an absolute path. 6881 6882 - Issue #15413: `os.times()` had disappeared under Windows. 6883 6884 - Issue #15402: An issue in the struct module that caused `sys.getsizeof()` to 6885 return incorrect results for struct.Struct instances has been fixed. Initial 6886 patch by Serhiy Storchaka. 6887 6888 - Issue #15232: When mangle_from is True, `email.Generator` now correctly 6889 mangles lines that start with 'From ' that occur in a MIME preamble or 6890 epilogue. 6891 6892 - Issue #15094: Incorrectly placed #endif in _tkinter.c. Patch by Serhiy 6893 Storchaka. 6894 6895 - Issue #13922: `argparse` no longer incorrectly strips '--'s that appear after 6896 the first one. 6897 6898 - Issue #12353: `argparse` now correctly handles null argument values. 6899 6900 - Issue #10017, issue #14998: Fix TypeError using pprint on dictionaries with 6901 user-defined types as keys or other unorderable keys. 6902 6903 - Issue #15397: `inspect.getmodulename()` is now based directly on importlib via 6904 a new `importlib.machinery.all_suffixes()` API. 6905 6906 - Issue #14635: `telnetlib` will use poll() rather than select() when possible to 6907 avoid failing due to the select() file descriptor limit. 6908 6909 - Issue #15180: Clarify posixpath.join() error message when mixing str & bytes. 6910 6911 - Issue #15343: pkgutil now includes an iter_importer_modules implementation for 6912 importlib.machinery.FileFinder (similar to the way it already handled 6913 zipimport.zipimporter). 6914 6915 - Issue #15314: runpy now sets __main__.__loader__ correctly. 6916 6917 - Issue #15357: The import emulation in pkgutil is now deprecated. pkgutil uses 6918 importlib internally rather than the emulation. 6919 6920 - Issue #15233: Python now guarantees that callables registered with the atexit 6921 module will be called in a deterministic order. 6922 6923 - Issue #15238: `shutil.copystat()` now copies Linux "extended attributes". 6924 6925 - Issue #15230: runpy.run_path now correctly sets __package__ as described in 6926 the documentation. 6927 6928 - Issue #15315: Support VS 2010 in distutils cygwincompiler. 6929 6930 - Issue #15294: Fix a regression in pkgutil.extend_path()'s handling of nested 6931 namespace packages. 6932 6933 - Issue #15056: `imp.cache_from_source()` and `imp.source_from_cache()` raise 6934 NotImplementedError when `sys.implementation.cache_tag` is set to None. 6935 6936 - Issue #15256: Grammatical mistake in exception raised by `imp.find_module()`. 6937 6938 - Issue #5931: `wsgiref` environ variable SERVER_SOFTWARE will specify an 6939 implementation specific term like CPython, Jython instead of generic "Python". 6940 6941 - Issue #13248: Remove obsolete argument "max_buffer_size" of BufferedWriter and 6942 BufferedRWPair, from the io module. 6943 6944 - Issue #13248: Remove obsolete argument "version" of `argparse.ArgumentParser`. 6945 6946 - Issue #14814: Implement more consistent ordering and sorting behaviour for 6947 ipaddress objects. 6948 6949 - Issue #14814: `ipaddress` network objects correctly return NotImplemented when 6950 compared to arbitrary objects instead of raising TypeError. 6951 6952 - Issue #14990: Correctly fail with SyntaxError on invalid encoding declaration. 6953 6954 - Issue #14814: `ipaddress` now provides more informative error messages when 6955 constructing instances directly (changes permitted during beta due to 6956 provisional API status). 6957 6958 - Issue #15247: `io.FileIO` now raises an error when given a file descriptor 6959 pointing to a directory. 6960 6961 - Issue #15261: Stop os.stat(fd) crashing on Windows when fd not open. 6962 6963 - Issue #15166: Implement `imp.get_tag()` using `sys.implementation.cache_tag`. 6964 6965 - Issue #15210: Catch KeyError when `importlib.__init__()` can't find 6966 _frozen_importlib in sys.modules, not ImportError. 6967 6968 - Issue #15030: `importlib.abc.PyPycLoader` now supports the new source size 6969 header field in .pyc files. 6970 6971 - Issue #5346: Preserve permissions of mbox, MMDF and Babyl mailbox files on 6972 flush(). 6973 6974 - Issue #10571: Fix the "--sign" option of distutils' upload command. Patch by 6975 Jakub Wilk. 6976 6977 - Issue #9559: If messages were only added, a new file is no longer created and 6978 renamed over the old file when flush() is called on an mbox, MMDF or Babyl 6979 mailbox. 6980 6981 - Issue #10924: Fixed `crypt.mksalt()` to use a RNG that is suitable for 6982 cryptographic purpose. 6983 6984 - Issue #15184: Ensure consistent results of OS X configuration tailoring for 6985 universal builds by factoring out common OS X-specific customizations from 6986 sysconfig, distutils.sysconfig, distutils.util, and distutils.unixccompiler 6987 into a new module _osx_support. 6988 6989 C API 6990 ----- 6991 6992 - Issue #15610: `PyImport_ImportModuleEx()` now uses a 'level' of 0 instead of -1. 6993 6994 - Issue #15169, issue #14599: Strip out the C implementation of 6995 `imp.source_from_cache()` used by PyImport_ExecCodeModuleWithPathnames() and 6996 used the Python code instead. Leads to PyImport_ExecCodeModuleObject() to not 6997 try to infer the source path from the bytecode path as 6998 PyImport_ExecCodeModuleWithPathnames() does. 6999 7000 Extension Modules 7001 ----------------- 7002 7003 - Issue #6493: An issue in ctypes on Windows that caused structure bitfields of 7004 type `ctypes.c_uint32` and width 32 to incorrectly be set has been fixed. 7005 7006 - Issue #15194: Update libffi to the 3.0.11 release. 7007 7008 IDLE 7009 ---- 7010 7011 - Issue #13052: Fix IDLE crashing when replace string in Search/Replace dialog 7012 ended with ``\``. Patch by Roger Serwy. 7013 7014 Tools/Demos 7015 ----------- 7016 7017 - Issue #15458: python-config gets a new option --configdir to print the $LIBPL 7018 value. 7019 7020 - Move importlib.test.benchmark to Tools/importbench. 7021 7022 - Issue #12605: The gdb hooks for debugging CPython (within Tools/gdb) have been 7023 enhanced to show information on more C frames relevant to CPython within the 7024 "py-bt" and "py-bt-full" commands: 7025 7026 * C frames that are waiting on the GIL 7027 * C frames that are garbage-collecting 7028 * C frames that are due to the invocation of a PyCFunction 7029 7030 Documentation 7031 ------------- 7032 7033 - Issue #15041: Update "see also" list in tkinter documentation. 7034 7035 - Issue #15444: Use proper spelling for non-ASCII contributor names. Patch by 7036 Serhiy Storchaka. 7037 7038 - Issue #15295: Reorganize and rewrite the documentation on the import system. 7039 7040 - Issue #15230: Clearly document some of the limitations of the runpy module and 7041 nudge readers towards importlib when appropriate. 7042 7043 - Issue #15053: Copy Python 3.3 import lock change notice to all relevant 7044 functions in imp instead of just at the top of the relevant section. 7045 7046 - Issue #15288: Link to the term "loader" in notes in pkgutil about how things 7047 won't work as expected in Python 3.3 and mark the requisite functions as 7048 "changed" since they will no longer work with modules directly imported by 7049 import itself. 7050 7051 - Issue #13557: Clarify effect of giving two different namespaces to `exec()` or 7052 `execfile()`. 7053 7054 - Issue #15250: Document that `filecmp.dircmp()` compares files shallowly. Patch 7055 contributed by Chris Jerdonek. 7056 7057 - Issue #15442: Expose the default list of directories ignored by 7058 `filecmp.dircmp()` as a module attribute, and expand the list to more modern 7059 values. 7060 7061 Tests 7062 ----- 7063 7064 - Issue #15467: Move helpers for `__sizeof__()` tests into test_support. Patch 7065 by Serhiy Storchaka. 7066 7067 - Issue #15320: Make iterating the list of tests thread-safe when running tests 7068 in multiprocess mode. Patch by Chris Jerdonek. 7069 7070 - Issue #15168: Move `importlib.test` to `test.test_importlib`. 7071 7072 - Issue #15091: Reactivate a test on UNIX which was failing thanks to a 7073 forgotten `importlib.invalidate_caches()` call. 7074 7075 - Issue #15230: Adopted a more systematic approach in the runpy tests. 7076 7077 - Issue #15300: Ensure the temporary test working directories are in the same 7078 parent folder when running tests in multiprocess mode from a Python build. 7079 Patch by Chris Jerdonek. 7080 7081 - Issue #15284: Skip {send,recv}msg tests in test_socket when IPv6 is not 7082 enabled. Patch by Brian Brazil. 7083 7084 - Issue #15277: Fix a resource leak in support.py when IPv6 is disabled. Patch 7085 by Brian Brazil. 7086 7087 Build 7088 ----- 7089 7090 - Issue #11715: Fix multiarch detection without having Debian development tools 7091 (dpkg-dev) installed. 7092 7093 - Issue #15037: Build OS X installers with local copy of ncurses 5.9 libraries 7094 to avoid curses.unget_wch bug present in older versions of ncurses such as 7095 those shipped with OS X. 7096 7097 - Issue #15560: Fix building _sqlite3 extension on OS X with an SDK. Also, for 7098 OS X installers, ensure consistent sqlite3 behavior and feature availability 7099 by building a local copy of libsqlite3 rather than depending on the wide range 7100 of versions supplied with various OS X releases. 7101 7102 - Issue #8847: Disable COMDAT folding in Windows PGO builds. 7103 7104 - Issue #14018: Fix OS X Tcl/Tk framework checking when using OS X SDKs. 7105 7106 - Issue #16256: OS X installer now sets correct permissions for doc directory. 7107 7108 - Issue #15431: Add _freeze_importlib project to regenerate importlib.h on 7109 Windows. Patch by Kristján Valur Jónsson. 7110 7111 - Issue #14197: For OS X framework builds, ensure links to the shared library 7112 are created with the proper ABI suffix. 7113 7114 - Issue #14330: For cross builds, don't use host python, use host search paths 7115 for host compiler. 7116 7117 - Issue #15235: Allow Berkley DB versions up to 5.3 to build the dbm module. 7118 7119 - Issue #15268: Search curses.h in /usr/include/ncursesw. 7120 7121 7122 What's New in Python 3.3.0 Beta 1? 7123 ================================== 7124 7125 *Release date: 27-Jun-2012* 7126 7127 Core and Builtins 7128 ----------------- 7129 7130 - Fix a (most likely) very rare memory leak when calling main() and not being 7131 able to decode a command-line argument. 7132 7133 - Issue #14815: Use Py_ssize_t instead of long for the object hash, to 7134 preserve all 64 bits of hash on Win64. 7135 7136 - Issue #12268: File readline, readlines and read() or readall() methods 7137 no longer lose data when an underlying read system call is interrupted. 7138 IOError is no longer raised due to a read system call returning EINTR 7139 from within these methods. 7140 7141 - Issue #11626: Add _SizeT functions to stable ABI. 7142 7143 - Issue #15142: Fix reference leak when deallocating instances of types 7144 created using PyType_FromSpec(). 7145 7146 - Issue #10053: Don't close FDs when FileIO.__init__ fails. Loosely based on 7147 the work by Hirokazu Yamamoto. 7148 7149 - Issue #15096: Removed support for ur'' as the raw notation isn't 7150 compatible with Python 2.x's raw unicode strings. 7151 7152 - Issue #13783: Generator objects now use the identifier APIs internally 7153 7154 - Issue #14874: Restore charmap decoding speed to pre-PEP 393 levels. 7155 Patch by Serhiy Storchaka. 7156 7157 - Issue #15026: utf-16 encoding is now significantly faster (up to 10x). 7158 Patch by Serhiy Storchaka. 7159 7160 - Issue #11022: open() and io.TextIOWrapper are now calling 7161 locale.getpreferredencoding(False) instead of locale.getpreferredencoding() 7162 in text mode if the encoding is not specified. Don't change temporary the 7163 locale encoding using locale.setlocale(), use the current locale encoding 7164 instead of the user preferred encoding. 7165 7166 - Issue #14673: Add Eric Snow's sys.implementation implementation. 7167 7168 - Issue #15038: Optimize python Locks on Windows. 7169 7170 Library 7171 ------- 7172 7173 - Issue #12288: Consider '0' and '0.0' as valid initialvalue 7174 for tkinter SimpleDialog. 7175 7176 - Issue #15512: Add a __sizeof__ implementation for parser. 7177 Patch by Serhiy Storchaka. 7178 7179 - Issue #15469: Add a __sizeof__ implementation for deque objects. 7180 Patch by Serhiy Storchaka. 7181 7182 - Issue #15489: Add a __sizeof__ implementation for BytesIO objects. 7183 Patch by Serhiy Storchaka. 7184 7185 - Issue #15487: Add a __sizeof__ implementation for buffered I/O objects. 7186 Patch by Serhiy Storchaka. 7187 7188 - Issue #15514: Correct __sizeof__ support for cpu_set. 7189 Patch by Serhiy Storchaka. 7190 7191 - Issue #15177: Added dir_fd parameter to os.fwalk(). 7192 7193 - Issue #15061: Re-implemented hmac.compare_digest() in C to prevent further 7194 timing analysis and to support all buffer protocol aware objects as well as 7195 ASCII only str instances safely. 7196 7197 - Issue #15164: Change return value of platform.uname() from a 7198 plain tuple to a collections.namedtuple. 7199 7200 - Support Mageia Linux in the platform module. 7201 7202 - Issue #11678: Support Arch linux in the platform module. 7203 7204 - Issue #15118: Change return value of os.uname() and os.times() from 7205 plain tuples to immutable iterable objects with named attributes 7206 (structseq objects). 7207 7208 - Speed up _decimal by another 10-15% by caching the thread local context 7209 that was last accessed. In the pi benchmark (64-bit platform, prec=9), 7210 _decimal is now only 1.5x slower than float. 7211 7212 - Remove the packaging module, which is not ready for prime time. 7213 7214 - Issue #15154: Add "dir_fd" parameter to os.rmdir, remove "rmdir" 7215 parameter from os.remove / os.unlink. 7216 7217 - Issue #4489: Add a shutil.rmtree that isn't susceptible to symlink attacks. 7218 It is used automatically on platforms supporting the necessary os.openat() 7219 and os.unlinkat() functions. Main code by Martin von Löwis. 7220 7221 - Issue #15156: HTMLParser now uses the new "html.entities.html5" dictionary. 7222 7223 - Issue #11113: add a new "html5" dictionary containing the named character 7224 references defined by the HTML5 standard and the equivalent Unicode 7225 character(s) to the html.entities module. 7226 7227 - Issue #15114: the strict mode of HTMLParser and the HTMLParseError exception 7228 are deprecated now that the parser is able to parse invalid markup. 7229 7230 - Issue #3665: \u and \U escapes are now supported in unicode regular 7231 expressions. Patch by Serhiy Storchaka. 7232 7233 - Issue #15153: Added inspect.getgeneratorlocals to simplify white box 7234 testing of generator state updates 7235 7236 - Issue #13062: Added inspect.getclosurevars to simplify testing stateful 7237 closures 7238 7239 - Issue #11024: Fixes and additional tests for Time2Internaldate. 7240 7241 - Issue #14626: Large refactoring of functions / parameters in the os module. 7242 Many functions now support "dir_fd" and "follow_symlinks" parameters; 7243 some also support accepting an open file descriptor in place of a path 7244 string. Added os.support_* collections as LBYL helpers. Removed many 7245 functions only previously seen in 3.3 alpha releases (often starting with 7246 "f" or "l", or ending with "at"). Originally suggested by Serhiy Storchaka; 7247 implemented by Larry Hastings. 7248 7249 - Issue #15008: Implement PEP 362 "Signature Objects". 7250 Patch by Yury Selivanov. 7251 7252 - Issue #15138: base64.urlsafe_{en,de}code() are now 3-4x faster. 7253 7254 - Issue #444582: Add shutil.which, for finding programs on the system path. 7255 Original patch by Erik Demaine, with later iterations by Jan Killian 7256 and Brian Curtin. 7257 7258 - Issue #14837: SSL errors now have ``library`` and ``reason`` attributes 7259 describing precisely what happened and in which OpenSSL submodule. The 7260 str() of a SSLError is also enhanced accordingly. 7261 7262 - Issue #9527: datetime.astimezone() method will now supply a class 7263 timezone instance corresponding to the system local timezone when 7264 called with no arguments. 7265 7266 - Issue #14653: email.utils.mktime_tz() no longer relies on system 7267 mktime() when timezone offest is supplied. 7268 7269 - Issue #14684: zlib.compressobj() and zlib.decompressobj() now support the use 7270 of predefined compression dictionaries. Original patch by Sam Rushing. 7271 7272 - Fix GzipFile's handling of filenames given as bytes objects. 7273 7274 - Issue #14772: Return destination values from some shutil functions. 7275 7276 - Issue #15064: Implement context management protocol for multiprocessing types 7277 7278 - Issue #15101: Make pool finalizer avoid joining current thread. 7279 7280 - Issue #14657: The frozen instance of importlib used for bootstrap is now 7281 also the module imported as importlib._bootstrap. 7282 7283 - Issue #14055: Add __sizeof__ support to _elementtree. 7284 7285 - Issue #15054: A bug in tokenize.tokenize that caused string literals 7286 with 'b' prefixes to be incorrectly tokenized has been fixed. 7287 Patch by Serhiy Storchaka. 7288 7289 - Issue #15006: Allow equality comparison between naive and aware 7290 time or datetime objects. 7291 7292 - Issue #15036: Mailbox no longer throws an error if a flush is done 7293 between operations when removing or changing multiple items in mbox, 7294 MMDF, or Babyl mailboxes. 7295 7296 - Issue #14059: Implement multiprocessing.Barrier. 7297 7298 - Issue #15061: The inappropriately named hmac.secure_compare has been 7299 renamed to hmac.compare_digest, restricted to operating on bytes inputs 7300 only and had its documentation updated to more accurately reflect both its 7301 intent and its limitations 7302 7303 - Issue #13841: Make child processes exit using sys.exit() on Windows. 7304 7305 - Issue #14936: curses_panel was converted to PEP 3121 and PEP 384 API. 7306 Patch by Robin Schreiber. 7307 7308 - Issue #1667546: On platforms supporting tm_zone and tm_gmtoff fields 7309 in struct tm, time.struct_time objects returned by time.gmtime(), 7310 time.localtime() and time.strptime() functions now have tm_zone and 7311 tm_gmtoff attributes. Original patch by Paul Boddie. 7312 7313 - Rename adjusted attribute to adjustable in time.get_clock_info() result. 7314 7315 - Issue #3518: Remove references to non-existent BaseManager.from_address() 7316 method. 7317 7318 - Issue #13857: Added textwrap.indent() function (initial patch by Ezra 7319 Berch) 7320 7321 - Issue #2736: Added datetime.timestamp() method. 7322 7323 - Issue #13854: Make multiprocessing properly handle non-integer 7324 non-string argument to SystemExit. 7325 7326 - Issue #12157: Make pool.map() empty iterables correctly. Initial 7327 patch by mouad. 7328 7329 - Issue #11823: disassembly now shows argument counts on calls with keyword args. 7330 7331 - Issue #14711: os.stat_float_times() has been deprecated. 7332 7333 - LZMAFile now accepts the modes "rb"/"wb"/"ab" as synonyms of "r"/"w"/"a". 7334 7335 - The bz2 and lzma modules now each contain an open() function, allowing 7336 compressed files to readily be opened in text mode as well as binary mode. 7337 7338 - BZ2File.__init__() and LZMAFile.__init__() now accept a file object as their 7339 first argument, rather than requiring a separate "fileobj" argument. 7340 7341 - gzip.open() now accepts file objects as well as filenames. 7342 7343 - Issue #14992: os.makedirs(path, exist_ok=True) would raise an OSError 7344 when the path existed and had the S_ISGID mode bit set when it was 7345 not explicitly asked for. This is no longer an exception as mkdir 7346 cannot control if the OS sets that bit for it or not. 7347 7348 - Issue #14989: Make the CGI enable option to http.server available via command 7349 line. 7350 7351 - Issue #14987: Add a missing import statement to inspect. 7352 7353 - Issue #1079: email.header.decode_header now correctly parses all the examples 7354 in RFC2047. There is a necessary visible behavior change: the leading and/or 7355 trailing whitespace on ASCII parts is now preserved. 7356 7357 - Issue #14969: Better handling of exception chaining in contextlib.ExitStack 7358 7359 - Issue #14963: Convert contextlib.ExitStack.__exit__ to use an iterative 7360 algorithm (Patch by Alon Horev) 7361 7362 - Issue #14785: Add sys._debugmallocstats() to help debug low-level memory 7363 allocation issues 7364 7365 - Issue #14443: Ensure that .py files are byte-compiled with the correct Python 7366 executable within bdist_rpm even on older versions of RPM 7367 7368 C-API 7369 ----- 7370 7371 - Issue #15146: Add PyType_FromSpecWithBases. Patch by Robin Schreiber. 7372 7373 - Issue #15042: Add PyState_AddModule and PyState_RemoveModule. Add version 7374 guard for Py_LIMITED_API additions. Patch by Robin Schreiber. 7375 7376 - Issue #13783: Inadvertent additions to the public C API in the PEP 380 7377 implementation have either been removed or marked as private interfaces. 7378 7379 Extension Modules 7380 ----------------- 7381 7382 - Issue #15000: Support the "unique" x32 architecture in _posixsubprocess.c. 7383 7384 IDLE 7385 ---- 7386 7387 - Issue #9803: Don't close IDLE on saving if breakpoint is open. 7388 Patch by Roger Serwy. 7389 7390 - Issue #14962: Update text coloring in IDLE shell window after changing 7391 options. Patch by Roger Serwy. 7392 7393 Documentation 7394 ------------- 7395 7396 - Issue #15176: Clarified behavior, documentation, and implementation 7397 of os.listdir(). 7398 7399 - Issue #14982: Document that pkgutil's iteration functions require the 7400 non-standard iter_modules() method to be defined by an importer (something 7401 the importlib importers do not define). 7402 7403 - Issue #15081: Document PyState_FindModule. 7404 Patch by Robin Schreiber. 7405 7406 - Issue #14814: Added first draft of ipaddress module API reference 7407 7408 Tests 7409 ----- 7410 7411 - Issue #15187: Bugfix: remove temporary directories test_shutil was leaving 7412 behind. 7413 7414 - Issue #14769: test_capi now has SkipitemTest, which cleverly checks 7415 for "parity" between PyArg_ParseTuple() and the Python/getargs.c static 7416 function skipitem() for all possible "format units". 7417 7418 - test_nntplib now tolerates being run from behind NNTP gateways that add 7419 "X-Antivirus" headers to articles 7420 7421 - Issue #15043: test_gdb is now skipped entirely if gdb security settings 7422 block loading of the gdb hooks 7423 7424 - Issue #14963: Add test cases for exception handling behaviour 7425 in contextlib.ExitStack (Initial patch by Alon Horev) 7426 7427 Build 7428 ----- 7429 7430 - Issue #13590: Improve support for OS X Xcode 4: 7431 * Try to avoid building Python or extension modules with problematic 7432 llvm-gcc compiler. 7433 * Since Xcode 4 removes ppc support, extension module builds now 7434 check for ppc compiler support and automatically remove ppc and 7435 ppc64 archs when not available. 7436 * Since Xcode 4 no longer install SDKs in default locations, 7437 extension module builds now revert to using installed headers 7438 and libs if the SDK used to build the interpreter is not 7439 available. 7440 * Update ./configure to use better defaults for universal builds; 7441 in particular, --enable-universalsdk=yes uses the Xcode default 7442 SDK and --with-universal-archs now defaults to "intel" if ppc 7443 not available. 7444 7445 - Issue #14225: Fix Unicode support for curses (#12567) on OS X 7446 7447 - Issue #14928: Fix importlib bootstrap issues by using a custom executable 7448 (Modules/_freeze_importlib) to build Python/importlib.h. 7449 7450 7451 What's New in Python 3.3.0 Alpha 4? 7452 =================================== 7453 7454 *Release date: 31-May-2012* 7455 7456 Core and Builtins 7457 ----------------- 7458 7459 - Issue #14835: Make plistlib output empty arrays & dicts like OS X. 7460 Patch by Sidney San Martín. 7461 7462 - Issue #14744: Use the new _PyUnicodeWriter internal API to speed up 7463 str%args and str.format(args). 7464 7465 - Issue #14930: Make memoryview objects weakrefable. 7466 7467 - Issue #14775: Fix a potential quadratic dict build-up due to the garbage 7468 collector repeatedly trying to untrack dicts. 7469 7470 - Issue #14857: fix regression in references to PEP 3135 implicit __class__ 7471 closure variable (Reopens issue #12370) 7472 7473 - Issue #14712 (PEP 405): Virtual environments. Implemented by Vinay Sajip. 7474 7475 - Issue #14660 (PEP 420): Namespace packages. Implemented by Eric Smith. 7476 7477 - Issue #14494: Fix __future__.py and its documentation to note that 7478 absolute imports are the default behavior in 3.0 instead of 2.7. 7479 Patch by Sven Marnach. 7480 7481 - Issue #9260: A finer-grained import lock. Most of the import sequence 7482 now uses per-module locks rather than the global import lock, eliminating 7483 well-known issues with threads and imports. 7484 7485 - Issue #14624: UTF-16 decoding is now 3x to 4x faster on various inputs. 7486 Patch by Serhiy Storchaka. 7487 7488 - asdl_seq and asdl_int_seq are now Py_ssize_t sized. 7489 7490 - Issue #14133 (PEP 415): Implement suppression of __context__ display with an 7491 attribute on BaseException. This replaces the original mechanism of PEP 409. 7492 7493 - Issue #14417: Mutating a dict during lookup now restarts the lookup instead 7494 of raising a RuntimeError (undoes issue #14205). 7495 7496 - Issue #14738: Speed-up UTF-8 decoding on non-ASCII data. Patch by Serhiy 7497 Storchaka. 7498 7499 - Issue #14700: Fix two broken and undefined-behaviour-inducing overflow checks 7500 in old-style string formatting. 7501 7502 Library 7503 ------- 7504 7505 - Issue #14690: Use monotonic clock instead of system clock in the sched, 7506 subprocess and trace modules. 7507 7508 - Issue #14443: Tell rpmbuild to use the correct version of Python in 7509 bdist_rpm. Initial patch by Ross Lagerwall. 7510 7511 - Issue #12515: email now registers a defect if it gets to EOF while parsing 7512 a MIME part without seeing the closing MIME boundary. 7513 7514 - Issue #1672568: email now always decodes base64 payloads, adding padding and 7515 ignoring non-base64-alphabet characters if needed, and registering defects 7516 for any such problems. 7517 7518 - Issue #14925: email now registers a defect when the parser decides that there 7519 is a missing header/body separator line. MalformedHeaderDefect, which the 7520 existing code would never actually generate, is deprecated. 7521 7522 - Issue #10365: File open dialog now works instead of crashing even when 7523 the parent window is closed before the dialog. Patch by Roger Serwy. 7524 7525 - Issue #8739: Updated smtpd to support RFC 5321, and added support for the 7526 RFC 1870 SIZE extension. 7527 7528 - Issue #665194: Added a localtime function to email.utils to provide an 7529 aware local datetime for use in setting Date headers. 7530 7531 - Issue #12586: Added new provisional policies that implement convenient 7532 unicode support for email headers. See What's New for details. 7533 7534 - Issue #14731: Refactored email Policy framework to support full backward 7535 compatibility with Python 3.2 by default yet allow for the introduction of 7536 new features through new policies. Note that Policy.must_be_7bit is renamed 7537 to cte_type. 7538 7539 - Issue #14876: Use user-selected font for highlight configuration. 7540 7541 - Issue #14920: Fix the help(urllib.parse) failure on locale C on terminals. 7542 Have ascii characters in help. 7543 7544 - Issue #14548: Make multiprocessing finalizers check pid before 7545 running to cope with possibility of gc running just after fork. 7546 7547 - Issue #14036: Add an additional check to validate that port in urlparse does 7548 not go in illegal range and returns None. 7549 7550 - Issue #14862: Add missing names to os.__all__ 7551 7552 - Issue #14875: Use float('inf') instead of float('1e66666') in the json module. 7553 7554 - Issue #13585: Added contextlib.ExitStack 7555 7556 - PEP 3144, Issue #14814: Added the ipaddress module 7557 7558 - Issue #14426: Correct the Date format in Expires attribute of Set-Cookie 7559 Header in Cookie.py. 7560 7561 - Issue #14588: The types module now provide new_class() and prepare_class() 7562 functions to support PEP 3115 compliant dynamic class creation. Patch by 7563 Daniel Urban and Nick Coghlan. 7564 7565 - Issue #13152: Allow specifying a custom tabsize for expanding tabs in 7566 textwrap. Patch by John Feuerstein. 7567 7568 - Issue #14721: Send the correct 'Content-length: 0' header when the body is an 7569 empty string ''. Initial Patch contributed by Arve Knudsen. 7570 7571 - Issue #14072: Fix parsing of 'tel' URIs in urlparse by making the check for 7572 ports stricter. 7573 7574 - Issue #9374: Generic parsing of query and fragment portions of url for any 7575 scheme. Supported both by RFC3986 and RFC2396. 7576 7577 - Issue #14798: Fix the functions in pyclbr to raise an ImportError 7578 when the first part of a dotted name is not a package. Patch by 7579 Xavier de Gaye. 7580 7581 - Issue #12098: multiprocessing on Windows now starts child processes 7582 using the same sys.flags as the current process. Initial patch by 7583 Sergey Mezentsev. 7584 7585 - Issue #13031: Small speed-up for tarfile when unzipping tarfiles. 7586 Patch by Justin Peel. 7587 7588 - Issue #14780: urllib.request.urlopen() now has a ``cadefault`` argument 7589 to use the default certificate store. Initial patch by James Oakley. 7590 7591 - Issue #14829: Fix bisect and range() indexing with large indices 7592 (>= 2 ** 32) under 64-bit Windows. 7593 7594 - Issue #14732: The _csv module now uses PEP 3121 module initialization. 7595 Patch by Robin Schreiber. 7596 7597 - Issue #14809: Add HTTP status codes introduced by RFC 6585 to http.server 7598 and http.client. Patch by EungJun Yi. 7599 7600 - Issue #14777: tkinter may return undecoded UTF-8 bytes as a string when 7601 accessing the Tk clipboard. Modify clipboard_get() to first request type 7602 UTF8_STRING when no specific type is requested in an X11 windowing 7603 environment, falling back to the current default type STRING if that fails. 7604 Original patch by Thomas Kluyver. 7605 7606 - Issue #14773: Fix os.fwalk() failing on dangling symlinks. 7607 7608 - Issue #12541: Be lenient with quotes around Realm field of HTTP Basic 7609 Authentation in urllib2. 7610 7611 - Issue #14807: move undocumented tarfile.filemode() to stat.filemode() and add 7612 doc entry. Add tarfile.filemode alias with deprecation warning. 7613 7614 - Issue #13815: TarFile.extractfile() now returns io.BufferedReader objects. 7615 7616 - Issue #14532: Add a secure_compare() helper to the hmac module, to mitigate 7617 timing attacks. Patch by Jon Oberheide. 7618 7619 - Add importlib.util.resolve_name(). 7620 7621 - Issue #14366: Support lzma compression in zip files. 7622 Patch by Serhiy Storchaka. 7623 7624 - Issue #13959: Introduce importlib.find_loader() and document 7625 imp.find_module/load_module as deprecated. 7626 7627 - Issue #14082: shutil.copy2() now copies extended attributes, if possible. 7628 Patch by Hynek Schlawack. 7629 7630 - Issue #13959: Make importlib.abc.FileLoader.load_module()/get_filename() and 7631 importlib.machinery.ExtensionFileLoader.load_module() have their single 7632 argument be optional. Allows for the replacement (and thus deprecation) of 7633 imp.load_source()/load_package()/load_compiled(). 7634 7635 - Issue #13959: imp.get_suffixes() has been deprecated in favour of the new 7636 attributes on importlib.machinery: SOURCE_SUFFIXES, DEBUG_BYTECODE_SUFFIXES, 7637 OPTIMIZED_BYTECODE_SUFFIXES, BYTECODE_SUFFIXES, and EXTENSION_SUFFIXES. This 7638 led to an indirect deprecation of inspect.getmoduleinfo(). 7639 7640 - Issue #14662: Prevent shutil failures on OS X when destination does not 7641 support chflag operations. Patch by Hynek Schlawack. 7642 7643 - Issue #14157: Fix time.strptime failing without a year on February 29th. 7644 Patch by Hynek Schlawack. 7645 7646 - Issue #14753: Make multiprocessing's handling of negative timeouts 7647 the same as it was in Python 3.2. 7648 7649 - Issue #14583: Fix importlib bug when a package's __init__.py would first 7650 import one of its modules then raise an error. 7651 7652 - Issue #14741: Fix missing support for Ellipsis ('...') in parser module. 7653 7654 - Issue #14697: Fix missing support for set displays and set comprehensions in 7655 parser module. 7656 7657 - Issue #14701: Fix missing support for 'raise ... from' in parser module. 7658 7659 - Add support for timeouts to the acquire() methods of 7660 multiprocessing's lock/semaphore/condition proxies. 7661 7662 - Issue #13989: Add support for text mode to gzip.open(). 7663 7664 - Issue #14127: The os.stat() result object now provides three additional 7665 fields: st_ctime_ns, st_mtime_ns, and st_atime_ns, providing those times as an 7666 integer with nanosecond resolution. The functions os.utime(), os.lutimes(), 7667 and os.futimes() now accept a new parameter, ns, which accepts mtime and atime 7668 as integers with nanosecond resolution. 7669 7670 - Issue #14127 and #10148: shutil.copystat now preserves exact mtime and atime 7671 on filesystems providing nanosecond resolution. 7672 7673 IDLE 7674 ---- 7675 7676 - Issue #14958: Change IDLE systax highlighting to recognize all string and 7677 byte literals supported in Python 3.3. 7678 7679 - Issue #10997: Prevent a duplicate entry in IDLE's "Recent Files" menu. 7680 7681 - Issue #14929: Stop IDLE 3.x from closing on Unicode decode errors when 7682 grepping. Patch by Roger Serwy. 7683 7684 - Issue #12510: Attempting to get invalid tooltip no longer closes IDLE. 7685 Other tooltipss have been corrected or improved and the number of tests 7686 has been tripled. Original patch by Roger Serwy. 7687 7688 Tools/Demos 7689 ----------- 7690 7691 - Issue #14695: Bring Tools/parser/unparse.py support up to date with 7692 the Python 3.3 Grammar. 7693 7694 Build 7695 ----- 7696 7697 - Issue #14472: Update .gitignore. Patch by Matej Cepl. 7698 7699 - Upgrade Windows library versions: bzip 1.0.6, OpenSSL 1.0.1c. 7700 7701 - Issue #14693: Under non-Windows platforms, hashlib's fallback modules are 7702 always compiled, even if OpenSSL is present at build time. 7703 7704 - Issue #13210: Windows build now uses VS2010, ported from VS2008. 7705 7706 C-API 7707 ----- 7708 7709 - Issue #14705: The PyArg_Parse() family of functions now support the 'p' format 7710 unit, which accepts a "boolean predicate" argument. It converts any Python 7711 value into an integer--0 if it is "false", and 1 otherwise. 7712 7713 Documentation 7714 ------------- 7715 7716 - Issue #14863: Update the documentation of os.fdopen() to reflect the 7717 fact that it's only a thin wrapper around open() anymore. 7718 7719 - Issue #14588: The language reference now accurately documents the Python 3 7720 class definition process. Patch by Nick Coghlan. 7721 7722 - Issue #14943: Correct a default argument value for winreg.OpenKey 7723 and correctly list the argument names in the function's explanation. 7724 7725 7726 What's New in Python 3.3.0 Alpha 3? 7727 =================================== 7728 7729 *Release date: 01-May-2012* 7730 7731 Core and Builtins 7732 ----------------- 7733 7734 - Issue #14699: Fix calling the classmethod descriptor directly. 7735 7736 - Issue #14433: Prevent msvcrt crash in interactive prompt when stdin is closed. 7737 7738 - Issue #14521: Make result of float('nan') and float('-nan') more consistent 7739 across platforms. 7740 7741 - Issue #14646: __import__() sets __loader__ if the loader did not. 7742 7743 - Issue #14605: No longer have implicit entries in sys.meta_path. If 7744 sys.meta_path is found to be empty, raise ImportWarning. 7745 7746 - Issue #14605: No longer have implicit entries in sys.path_hooks. If 7747 sys.path_hooks is found to be empty, a warning will be raised. None is now 7748 inserted into sys.path_importer_cache if no finder was discovered. This also 7749 means imp.NullImporter is no longer implicitly used. 7750 7751 - Issue #13903: Implement PEP 412. Individual dictionary instances can now share 7752 their keys with other dictionaries. Classes take advantage of this to share 7753 their instance dictionary keys for improved memory and performance. 7754 7755 - Issue #11603 (again): Setting __repr__ to __str__ now raises a RuntimeError 7756 when repr() or str() is called on such an object. 7757 7758 - Issue #14658: Fix binding a special method to a builtin implementation of a 7759 special method with a different name. 7760 7761 - Issue #14630: Fix a memory access bug for instances of a subclass of int 7762 with value 0. 7763 7764 - Issue #14339: Speed improvements to bin, oct and hex functions. Patch by 7765 Serhiy Storchaka. 7766 7767 - Issue #14385: It is now possible to use a custom type for the __builtins__ 7768 namespace, instead of a dict. It can be used for sandboxing for example. 7769 Raise also a NameError instead of ImportError if __build_class__ name if not 7770 found in __builtins__. 7771 7772 - Issue #12599: Be more strict in accepting None compared to a false-like 7773 object for importlib.util.module_for_loader and 7774 importlib.machinery.PathFinder. 7775 7776 - Issue #14612: Fix jumping around with blocks by setting f_lineno. 7777 7778 - Issue #14592: Attempting a relative import w/o __package__ or __name__ set in 7779 globals raises a KeyError. 7780 7781 - Issue #14607: Fix keyword-only arguments which started with ``__``. 7782 7783 - Issue #10854: The ImportError raised when an extension module on Windows 7784 fails to import now uses the new path and name attributes from 7785 Issue #1559549. 7786 7787 - Issue #13889: Check and (if necessary) set FPU control word before calling 7788 any of the dtoa.c string <-> float conversion functions, on MSVC builds of 7789 Python. This fixes issues when embedding Python in a Delphi app. 7790 7791 - __import__() now matches PEP 328 and documentation by defaulting 'index' to 0 7792 instead of -1 and removing support for negative values. 7793 7794 - Issue #2377: Make importlib the implementation of __import__(). 7795 7796 - Issue #1559549: ImportError now has 'name' and 'path' attributes that are set 7797 using keyword arguments to its constructor. They are currently not set by 7798 import as they are meant for use by importlib. 7799 7800 - Issue #14474: Save and restore exception state in thread.start_new_thread() 7801 while writing error message if the thread leaves an unhandled exception. 7802 7803 - Issue #13019: Fix potential reference leaks in bytearray.extend(). Patch 7804 by Suman Saha. 7805 7806 Library 7807 ------- 7808 7809 - Issue #14768: os.path.expanduser('~/a') doesn't work correctly when HOME is '/'. 7810 7811 - Issue #14371: Support bzip2 in zipfile module. Patch by Serhiy Storchaka. 7812 7813 - Issue #13183: Fix pdb skipping frames after hitting a breakpoint and running 7814 step. Patch by Xavier de Gaye. 7815 7816 - Issue #14696: Fix parser module to understand 'nonlocal' declarations. 7817 7818 - Issue #10941: Fix imaplib.Internaldate2tuple to produce correct result near 7819 the DST transition. Patch by Joe Peterson. 7820 7821 - Issue #9154: Fix parser module to understand function annotations. 7822 7823 - Issue #6085: In http.server.py SimpleHTTPServer.address_string returns the 7824 client ip address instead client hostname. Patch by Charles-François Natali. 7825 7826 - Issue #14309: Deprecate time.clock(), use time.perf_counter() or 7827 time.process_time() instead. 7828 7829 - Issue #14428: Implement the PEP 418. Add time.get_clock_info(), 7830 time.perf_counter() and time.process_time() functions, and rename 7831 time.steady() to time.monotonic(). 7832 7833 - Issue #14646: importlib.util.module_for_loader() now sets __loader__ and 7834 __package__ (when possible). 7835 7836 - Issue #14664: It is now possible to use @unittest.skip{If,Unless} on a 7837 test class that doesn't inherit from TestCase (i.e. a mixin). 7838 7839 - Issue #4892: multiprocessing Connections can now be transferred over 7840 multiprocessing Connections. Patch by Richard Oudkerk (sbt). 7841 7842 - Issue #14160: TarFile.extractfile() failed to resolve symbolic links when 7843 the links were not located in an archive subdirectory. 7844 7845 - Issue #14638: pydoc now treats non-string __name__ values as if they 7846 were missing, instead of raising an error. 7847 7848 - Issue #13684: Fix httplib tunnel issue of infinite loops for certain sites 7849 which send EOF without trailing \r\n. 7850 7851 - Issue #14605: Add importlib.abc.FileLoader, importlib.machinery.(FileFinder, 7852 SourceFileLoader, SourcelessFileLoader, ExtensionFileLoader). 7853 7854 - Issue #13959: imp.cache_from_source()/source_from_cache() now follow 7855 os.path.join()/split() semantics for path manipulation instead of its prior, 7856 custom semantics of caring the right-most path separator forward in path 7857 joining. 7858 7859 - Issue #2193: Allow ":" character in Cookie NAME values. 7860 7861 - Issue #14629: tokenizer.detect_encoding will specify the filename in the 7862 SyntaxError exception if found at readline.__self__.name. 7863 7864 - Issue #14629: Raise SyntaxError in tokenizer.detect_encoding if the 7865 first two lines have non-UTF-8 characters without an encoding declaration. 7866 7867 - Issue #14308: Fix an exception when a "dummy" thread is in the threading 7868 module's active list after a fork(). 7869 7870 - Issue #11750: The Windows API functions scattered in the _subprocess and 7871 _multiprocessing.win32 modules now live in a single module "_winapi". 7872 Patch by sbt. 7873 7874 - Issue #14087: multiprocessing: add Condition.wait_for(). Patch by sbt. 7875 7876 - Issue #14538: HTMLParser can now parse correctly start tags that contain 7877 a bare '/'. 7878 7879 - Issue #14452: SysLogHandler no longer inserts a UTF-8 BOM into the message. 7880 7881 - Issue #14386: Expose the dict_proxy internal type as types.MappingProxyType. 7882 7883 - Issue #13959: Make imp.reload() always use a module's __loader__ to perform 7884 the reload. 7885 7886 - Issue #13959: Add imp.py and rename the built-in module to _imp, allowing for 7887 re-implementing parts of the module in pure Python. 7888 7889 - Issue #13496: Fix potential overflow in bisect.bisect algorithm when applied 7890 to a collection of size > sys.maxsize / 2. 7891 7892 - Have importlib take advantage of ImportError's new 'name' and 'path' 7893 attributes. 7894 7895 - Issue #14399: zipfile now recognizes that the archive has been modified even 7896 if only the comment is changed. In addition, the TypeError that results from 7897 trying to set a non-binary value as a comment is now raised at the time 7898 the comment is set rather than at the time the zipfile is written. 7899 7900 - trace.CoverageResults.is_ignored_filename() now ignores any name that starts 7901 with "<" and ends with ">" instead of special-casing "<string>" and 7902 "<doctest ". 7903 7904 - Issue #12537: The mailbox module no longer depends on knowledge of internal 7905 implementation details of the email package Message object. 7906 7907 - Issue #7978: socketserver now restarts the select() call when EINTR is 7908 returned. This avoids crashing the server loop when a signal is received. 7909 Patch by Jerzy Kozera. 7910 7911 - Issue #14522: Avoid duplicating socket handles in multiprocessing.connection. 7912 Patch by sbt. 7913 7914 - Don't Py_DECREF NULL variable in io.IncrementalNewlineDecoder. 7915 7916 - Issue #3033: Add displayof parameter to tkinter font. Patch by Guilherme Polo. 7917 7918 - Issue #14482: Raise a ValueError, not a NameError, when trying to create 7919 a multiprocessing Client or Listener with an AF_UNIX type address under 7920 Windows. Patch by Popa Claudiu. 7921 7922 - Issue #802310: Generate always unique tkinter font names if not directly passed. 7923 7924 - Issue #14151: Raise a ValueError, not a NameError, when trying to create 7925 a multiprocessing Client or Listener with an AF_PIPE type address under 7926 non-Windows platforms. Patch by Popa Claudiu. 7927 7928 - Issue #14493: Use gvfs-open or xdg-open in webbrowser. 7929 7930 Build 7931 ----- 7932 7933 - "make touch" will now touch generated files that are checked into Mercurial, 7934 after a "hg update" which failed to bring the timestamps into the right order. 7935 7936 Tests 7937 ----- 7938 7939 - Issue #14026: In test_cmd_line_script, check that sys.argv is populated 7940 correctly for the various invocation approaches (Patch by Jason Yeo) 7941 7942 - Issue #14032: Fix incorrect variable name in test_cmd_line_script debugging 7943 message (Patch by Jason Yeo) 7944 7945 - Issue #14589: Update certificate chain for sha256.tbs-internet.com, fixing 7946 a test failure in test_ssl. 7947 7948 - Issue #14355: Regrtest now supports the standard unittest test loading, and 7949 will use it if a test file contains no `test_main` method. 7950 7951 IDLE 7952 ---- 7953 7954 - Issue #8515: Set __file__ when run file in IDLE. 7955 Initial patch by Bruce Frederiksen. 7956 7957 - Issue #14496: Fix wrong name in idlelib/tabbedpages.py. 7958 Patch by Popa Claudiu. 7959 7960 Tools / Demos 7961 ------------- 7962 7963 - Issue #3561: The Windows installer now has an option, off by default, for 7964 placing the Python installation into the system "Path" environment variable. 7965 7966 - Issue #13165: stringbench is now available in the Tools/stringbench folder. 7967 It used to live in its own SVN project. 7968 7969 C-API 7970 ----- 7971 7972 - Issue #14098: New functions PyErr_GetExcInfo and PyErr_SetExcInfo. 7973 Patch by Stefan Behnel. 7974 7975 7976 What's New in Python 3.3.0 Alpha 2? 7977 =================================== 7978 7979 *Release date: 01-Apr-2012* 7980 7981 Core and Builtins 7982 ----------------- 7983 7984 - Issue #1683368: object.__new__ and object.__init__ raise a TypeError if they 7985 are passed arguments and their complementary method is not overridden. 7986 7987 - Issue #14378: Fix compiling ast.ImportFrom nodes with a "__future__" string as 7988 the module name that was not interned. 7989 7990 - Issue #14331: Use significantly less stack space when importing modules by 7991 allocating path buffers on the heap instead of the stack. 7992 7993 - Issue #14334: Prevent in a segfault in type.__getattribute__ when it was not 7994 passed strings. 7995 7996 - Issue #1469629: Allow cycles through an object's __dict__ slot to be 7997 collected. (For example if ``x.__dict__ is x``). 7998 7999 - Issue #14205: dict lookup raises a RuntimeError if the dict is modified 8000 during a lookup. 8001 8002 - Issue #14220: When a generator is delegating to another iterator with the 8003 yield from syntax, it needs to have its ``gi_running`` flag set to True. 8004 8005 - Issue #14435: Remove dedicated block allocator from floatobject.c and rely 8006 on the PyObject_Malloc() api like all other objects. 8007 8008 - Issue #14471: Fix a possible buffer overrun in the winreg module. 8009 8010 - Issue #14288: Allow the serialization of builtin iterators 8011 8012 Library 8013 ------- 8014 8015 - Issue #14300: Under Windows, sockets created using socket.dup() now allow 8016 overlapped I/O. Patch by sbt. 8017 8018 - Issue #13872: socket.detach() now marks the socket closed (as mirrored 8019 in the socket repr()). Patch by Matt Joiner. 8020 8021 - Issue #14406: Fix a race condition when using ``concurrent.futures.wait( 8022 return_when=ALL_COMPLETED)``. Patch by Matt Joiner. 8023 8024 - Issue #5136: deprecate old, unused functions from tkinter. 8025 8026 - Issue #14416: syslog now defines the LOG_ODELAY and LOG_AUTHPRIV constants 8027 if they are defined in <syslog.h>. 8028 8029 - Issue #14295: Add unittest.mock 8030 8031 - Issue #7652: Add --with-system-libmpdec option to configure for linking 8032 the _decimal module against an installed libmpdec. 8033 8034 - Issue #14380: MIMEText now defaults to utf-8 when passed non-ASCII unicode 8035 with no charset specified. 8036 8037 - Issue #10340: asyncore - properly handle EINVAL in dispatcher constructor on 8038 OSX; avoid to call handle_connect in case of a disconnected socket which 8039 was not meant to connect. 8040 8041 - Issue #14204: The ssl module now has support for the Next Protocol 8042 Negotiation extension, if available in the underlying OpenSSL library. 8043 Patch by Colin Marc. 8044 8045 - Issue #3035: Unused functions from tkinter are marked as pending deprecated. 8046 8047 - Issue #12757: Fix the skipping of doctests when python is run with -OO so 8048 that it works in unittest's verbose mode as well as non-verbose mode. 8049 8050 - Issue #7652: Integrate the decimal floating point libmpdec library to speed 8051 up the decimal module. Performance gains of the new C implementation are 8052 between 10x and 100x, depending on the application. 8053 8054 - Issue #14269: SMTPD now conforms to the RFC and requires a HELO command 8055 before MAIL, RCPT, or DATA. 8056 8057 - Issue #13694: asynchronous connect in asyncore.dispatcher does not set addr 8058 attribute. 8059 8060 - Issue #14344: fixed the repr of email.policy objects. 8061 8062 - Issue #11686: Added missing entries to email package __all__ lists 8063 (mostly the new Bytes classes). 8064 8065 - Issue #14335: multiprocessing's custom Pickler subclass now inherits from 8066 the C-accelerated implementation. Patch by sbt. 8067 8068 - Issue #10484: Fix the CGIHTTPServer's PATH_INFO handling problem. 8069 8070 - Issue #11199: Fix the with urllib which hangs on particular ftp urls. 8071 8072 - Improve the memory utilization and speed of functools.lru_cache. 8073 8074 - Issue #14222: Use the new time.steady() function instead of time.time() for 8075 timeout in queue and threading modules to not be affected of system time 8076 update. 8077 8078 - Issue #13248: Remove lib2to3.pytree.Base.get_prefix/set_prefix. 8079 8080 - Issue #14234: CVE-2012-0876: Randomize hashes of xml attributes in the hash 8081 table internal to the pyexpat module's copy of the expat library to avoid a 8082 denial of service due to hash collisions. Patch by David Malcolm with some 8083 modifications by the expat project. 8084 8085 - Issue #12818: format address no longer needlessly \ escapes ()s in names when 8086 the name ends up being quoted. 8087 8088 - Issue #14062: BytesGenerator now correctly folds Header objects, 8089 including using linesep when folding. 8090 8091 - Issue #13839: When invoked on the command-line, the pstats module now 8092 accepts several filenames of profile stat files and merges them all. 8093 Patch by Matt Joiner. 8094 8095 - Issue #14291: Email now defaults to utf-8 for non-ASCII unicode headers 8096 instead of raising an error. This fixes a regression relative to 2.7. 8097 8098 - Issue #989712: Support using Tk without a mainloop. 8099 8100 - Issue #3835: Refuse to use unthreaded Tcl in threaded Python. 8101 8102 - Issue #2843: Add new Tk API to Tkinter. 8103 8104 - Issue #14184: Increase the default stack size for secondary threads on 8105 Mac OS X to avoid interpreter crashes when using threads on 10.7. 8106 8107 - Issue #14180: datetime.date.fromtimestamp(), 8108 datetime.datetime.fromtimestamp() and datetime.datetime.utcfromtimestamp() 8109 now raise an OSError instead of ValueError if localtime() or gmtime() failed. 8110 8111 - Issue #14180: time.ctime(), gmtime(), time.localtime(), 8112 datetime.date.fromtimestamp(), datetime.datetime.fromtimestamp() and 8113 datetime.datetime.utcfromtimestamp() now raises an OverflowError, instead of 8114 a ValueError, if the timestamp does not fit in time_t. 8115 8116 - Issue #14180: datetime.datetime.fromtimestamp() and 8117 datetime.datetime.utcfromtimestamp() now round microseconds towards zero 8118 instead of rounding to nearest with ties going away from zero. 8119 8120 - Issue #10543: Fix unittest test discovery with Jython bytecode files. 8121 8122 - Issue #1178863: Separate initialisation from setting when initializing 8123 Tkinter.Variables; harmonize exceptions to ValueError; only delete variables 8124 that have not been deleted; assert that variable names are strings. 8125 8126 - Issue #14104: Implement time.monotonic() on Mac OS X, patch written by 8127 Nicholas Riley. 8128 8129 - Issue #13394: the aifc module now uses warnings.warn() to signal warnings. 8130 8131 - Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under 8132 Windows when the child process has already exited. 8133 8134 - Issue #14223: curses.addch() is no more limited to the range 0-255 when the 8135 Python curses is not linked to libncursesw. It was a regression introduced 8136 in Python 3.3a1. 8137 8138 - Issue #14168: Check for presence of Element._attrs in minidom before 8139 accessing it. 8140 8141 - Issue #12328: Fix multiprocessing's use of overlapped I/O on Windows. 8142 Also, add a multiprocessing.connection.wait(rlist, timeout=None) function 8143 for polling multiple objects at once. Patch by sbt. 8144 8145 - Issue #14007: Accept incomplete TreeBuilder objects (missing start, end, 8146 data or close method) for the Python implementation as well. 8147 Drop the no-op TreeBuilder().xml() method from the C implementation. 8148 8149 - Issue #14210: pdb now has tab-completion not only for command names, but 8150 also for their arguments, wherever possible. 8151 8152 - Issue #14310: Sockets can now be with other processes on Windows using 8153 the api socket.socket.share() and socket.fromshare(). 8154 8155 - Issue #10576: The gc module now has a 'callbacks' member that will get 8156 called when garbage collection takes place. 8157 8158 Build 8159 ----- 8160 8161 - Issue #14557: Fix extensions build on HP-UX. Patch by Adi Roiban. 8162 8163 - Issue #14387: Do not include accu.h from Python.h. 8164 8165 - Issue #14359: Only use O_CLOEXEC in _posixmodule.c if it is defined. 8166 Based on patch from Hervé Coatanhay. 8167 8168 - Issue #14321: Do not run pgen during the build if files are up to date. 8169 8170 Documentation 8171 ------------- 8172 8173 - Issue #14034: added the argparse tutorial. 8174 8175 - Issue #14324: Fix configure tests for cross builds. 8176 8177 - Issue #14327: Call AC_CANONICAL_HOST in configure.ac and check in 8178 config.{guess,sub}. Don't use uname calls for cross builds. 8179 8180 Extension Modules 8181 ----------------- 8182 8183 - Issue #9041: An issue in ctypes.c_longdouble, ctypes.c_double, and 8184 ctypes.c_float that caused an incorrect exception to be returned in the 8185 case of overflow has been fixed. 8186 8187 - Issue #14212: The re module didn't retain a reference to buffers it was 8188 scanning, resulting in segfaults. 8189 8190 - Issue #14259: The finditer() method of re objects did not take any 8191 keyword arguments, contrary to the documentation. 8192 8193 - Issue #10142: Support for SEEK_HOLE/SEEK_DATA (for example, under ZFS). 8194 8195 Tests 8196 ----- 8197 8198 - Issue #14442: Add missing errno import in test_smtplib. 8199 8200 - Issue #8315: (partial fix) python -m unittest test.test_email now works. 8201 8202 8203 What's New in Python 3.3.0 Alpha 1? 8204 =================================== 8205 8206 *Release date: 05-Mar-2012* 8207 8208 Core and Builtins 8209 ----------------- 8210 8211 - Issue #14172: Fix reference leak when marshalling a buffer-like object 8212 (other than a bytes object). 8213 8214 - Issue #13521: dict.setdefault() now does only one lookup for the given key, 8215 making it "atomic" for many purposes. Patch by Filip Gruszczyński. 8216 8217 - PEP 409, Issue #6210: "raise X from None" is now supported as a means of 8218 suppressing the display of the chained exception context. The chained 8219 context still remains available as the __context__ attribute. 8220 8221 - Issue #10181: New memoryview implementation fixes multiple ownership 8222 and lifetime issues of dynamically allocated Py_buffer members (#9990) 8223 as well as crashes (#8305, #7433). Many new features have been added 8224 (See whatsnew/3.3), and the documentation has been updated extensively. 8225 The ndarray test object from _testbuffer.c implements all aspects of 8226 PEP-3118, so further development towards the complete implementation 8227 of the PEP can proceed in a test-driven manner. 8228 8229 Thanks to Nick Coghlan, Antoine Pitrou and Pauli Virtanen for review 8230 and many ideas. 8231 8232 - Issue #12834: Fix incorrect results of memoryview.tobytes() for 8233 non-contiguous arrays. 8234 8235 - Issue #5231: Introduce memoryview.cast() method that allows changing 8236 format and shape without making a copy of the underlying memory. 8237 8238 - Issue #14084: Fix a file descriptor leak when importing a module with a 8239 bad encoding. 8240 8241 - Upgrade Unicode data to Unicode 6.1. 8242 8243 - Issue #14040: Remove rarely used file name suffixes for C extensions 8244 (under POSIX mainly). 8245 8246 - Issue #14051: Allow arbitrary attributes to be set of classmethod and 8247 staticmethod. 8248 8249 - Issue #13703: oCERT-2011-003: Randomize hashes of str and bytes to protect 8250 against denial of service attacks due to hash collisions within the dict and 8251 set types. Patch by David Malcolm, based on work by Victor Stinner. 8252 8253 - Issue #13020: Fix a reference leak when allocating a structsequence object 8254 fails. Patch by Suman Saha. 8255 8256 - Issue #13908: Ready types returned from PyType_FromSpec. 8257 8258 - Issue #11235: Fix OverflowError when trying to import a source file whose 8259 modification time doesn't fit in a 32-bit timestamp. 8260 8261 - Issue #12705: A SyntaxError exception is now raised when attempting to 8262 compile multiple statements as a single interactive statement. 8263 8264 - Fix the builtin module initialization code to store the init function for 8265 future reinitialization. 8266 8267 - Issue #8052: The posix subprocess module would take a long time closing 8268 all possible file descriptors in the child process rather than just open 8269 file descriptors. It now closes only the open fds if possible for the 8270 default close_fds=True behavior. 8271 8272 - Issue #13629: Renumber the tokens in token.h so that they match the indexes 8273 into _PyParser_TokenNames. 8274 8275 - Issue #13752: Add a casefold() method to str. 8276 8277 - Issue #13761: Add a "flush" keyword argument to the print() function, 8278 used to ensure flushing the output stream. 8279 8280 - Issue #13645: pyc files now contain the size of the corresponding source 8281 code, to avoid timestamp collisions (especially on filesystems with a low 8282 timestamp resolution) when checking for freshness of the bytecode. 8283 8284 - PEP 380, Issue #11682: Add "yield from <x>" to support easy delegation to 8285 subgenerators (initial patch by Greg Ewing, integration into 3.3 by 8286 Renaud Blanch, Ryan Kelly, Zbigniew Jędrzejewski-Szmek and Nick Coghlan) 8287 8288 - Issue #13748: Raw bytes literals can now be written with the ``rb`` prefix 8289 as well as ``br``. 8290 8291 - Issue #12736: Use full unicode case mappings for upper, lower, and title case. 8292 8293 - Issue #12760: Add a create mode to open(). Patch by David Townshend. 8294 8295 - Issue #13738: Simplify implementation of bytes.lower() and bytes.upper(). 8296 8297 - Issue #13577: Built-in methods and functions now have a __qualname__. 8298 Patch by sbt. 8299 8300 - Issue #6695: Full garbage collection runs now clear the freelist of set 8301 objects. Initial patch by Matthias Troffaes. 8302 8303 - Fix OSError.__init__ and OSError.__new__ so that each of them can be 8304 overridden and take additional arguments (followup to issue #12555). 8305 8306 - Fix the fix for issue #12149: it was incorrect, although it had the side 8307 effect of appearing to resolve the issue. Thanks to Mark Shannon for 8308 noticing. 8309 8310 - Issue #13505: Pickle bytes objects in a way that is compatible with 8311 Python 2 when using protocols <= 2. 8312 8313 - Issue #11147: Fix an unused argument in _Py_ANNOTATE_MEMORY_ORDER. (Fix 8314 given by Campbell Barton). 8315 8316 - Issue #13503: Use a more efficient reduction format for bytearrays with 8317 pickle protocol >= 3. The old reduction format is kept with older protocols 8318 in order to allow unpickling under Python 2. Patch by Irmen de Jong. 8319 8320 - Issue #7111: Python can now be run without a stdin, stdout or stderr 8321 stream. It was already the case with Python 2. However, the corresponding 8322 sys module entries are now set to None (instead of an unusable file object). 8323 8324 - Issue #11849: Ensure that free()d memory arenas are really released 8325 on POSIX systems supporting anonymous memory mappings. Patch by 8326 Charles-François Natali. 8327 8328 - PEP 3155 / issue #13448: Qualified name for classes and functions. 8329 8330 - Issue #13436: Fix a bogus error message when an AST object was passed 8331 an invalid integer value. 8332 8333 - Issue #13411: memoryview objects are now hashable when the underlying 8334 object is hashable. 8335 8336 - Issue #13338: Handle all enumerations in _Py_ANNOTATE_MEMORY_ORDER 8337 to allow compiling extension modules with -Wswitch-enum on gcc. 8338 Initial patch by Floris Bruynooghe. 8339 8340 - Issue #10227: Add an allocation cache for a single slice object. Patch by 8341 Stefan Behnel. 8342 8343 - Issue #13393: BufferedReader.read1() now asks the full requested size to 8344 the raw stream instead of limiting itself to the buffer size. 8345 8346 - Issue #13392: Writing a pyc file should now be atomic under Windows as well. 8347 8348 - Issue #13333: The UTF-7 decoder now accepts lone surrogates (the encoder 8349 already accepts them). 8350 8351 - Issue #13389: Full garbage collection passes now clear the freelists for 8352 list and dict objects. They already cleared other freelists in the 8353 interpreter. 8354 8355 - Issue #13327: Remove the need for an explicit None as the second argument 8356 to os.utime, os.lutimes, os.futimes, os.futimens, os.futimesat, in 8357 order to update to the current time. Also added keyword argument 8358 handling to os.utimensat in order to remove the need for explicit None. 8359 8360 - Issue #13350: Simplify some C code by replacing most usages of 8361 PyUnicode_Format by PyUnicode_FromFormat. 8362 8363 - Issue #13342: input() used to ignore sys.stdin's and sys.stdout's unicode 8364 error handler in interactive mode (when calling into PyOS_Readline()). 8365 8366 - Issue #9896: Add start, stop, and step attributes to range objects. 8367 8368 - Issue #13343: Fix a SystemError when a lambda expression uses a global 8369 variable in the default value of a keyword-only argument: ``lambda *, 8370 arg=GLOBAL_NAME: None`` 8371 8372 - Issue #12797: Added custom opener parameter to builtin open() and 8373 FileIO.open(). 8374 8375 - Issue #10519: Avoid unnecessary recursive function calls in 8376 setobject.c. 8377 8378 - Issue #10363: Deallocate global locks in Py_Finalize(). 8379 8380 - Issue #13018: Fix reference leaks in error paths in dictobject.c. 8381 Patch by Suman Saha. 8382 8383 - Issue #13201: Define '==' and '!=' to compare range objects based on 8384 the sequence of values they define (instead of comparing based on 8385 object identity). 8386 8387 - Issue #1294232: In a few cases involving metaclass inheritance, the 8388 interpreter would sometimes invoke the wrong metaclass when building a new 8389 class object. These cases now behave correctly. Patch by Daniel Urban. 8390 8391 - Issue #12753: Add support for Unicode name aliases and named sequences. 8392 Both ``unicodedata.lookup()`` and '\N{...}' now resolve aliases, 8393 and ``unicodedata.lookup()`` resolves named sequences too. 8394 8395 - Issue #12170: The count(), find(), rfind(), index() and rindex() methods 8396 of bytes and bytearray objects now accept an integer between 0 and 255 8397 as their first argument. Patch by Petri Lehtinen. 8398 8399 - Issue #12604: VTRACE macro expanded to no-op in _sre.c to avoid compiler 8400 warnings. Patch by Josh Triplett and Petri Lehtinen. 8401 8402 - Issue #12281: Rewrite the MBCS codec to handle correctly replace and ignore 8403 error handlers on all Windows versions. The MBCS codec is now supporting all 8404 error handlers, instead of only replace to encode and ignore to decode. 8405 8406 - Issue #13188: When called without an explicit traceback argument, 8407 generator.throw() now gets the traceback from the passed exception's 8408 ``__traceback__`` attribute. Patch by Petri Lehtinen. 8409 8410 - Issue #13146: Writing a pyc file is now atomic under POSIX. 8411 8412 - Issue #7833: Extension modules built using distutils on Windows will no 8413 longer include a "manifest" to prevent them failing at import time in some 8414 embedded situations. 8415 8416 - PEP 3151 / issue #12555: reworking the OS and IO exception hierarchy. 8417 8418 - Add internal API for static strings (_Py_identifier et al.). 8419 8420 - Issue #13063: the Windows error ERROR_NO_DATA (numbered 232 and described 8421 as "The pipe is being closed") is now mapped to POSIX errno EPIPE 8422 (previously EINVAL). 8423 8424 - Issue #12911: Fix memory consumption when calculating the repr() of huge 8425 tuples or lists. 8426 8427 - PEP 393: flexible string representation. Thanks to Torsten Becker for the 8428 initial implementation, and Victor Stinner for various bug fixes. 8429 8430 - Issue #14081: The 'sep' and 'maxsplit' parameter to str.split, bytes.split, 8431 and bytearray.split may now be passed as keyword arguments. 8432 8433 - Issue #13012: The 'keepends' parameter to str.splitlines may now be passed 8434 as a keyword argument: "my_string.splitlines(keepends=True)". The same 8435 change also applies to bytes.splitlines and bytearray.splitlines. 8436 8437 - Issue #7732: Don't open a directory as a file anymore while importing a 8438 module. Ignore the directory if its name matches the module name (e.g. 8439 "__init__.py") and raise an ImportError instead. 8440 8441 - Issue #13021: Missing decref on an error path. Thanks to Suman Saha for 8442 finding the bug and providing a patch. 8443 8444 - Issue #12973: Fix overflow checks that relied on undefined behaviour in 8445 list_repeat (listobject.c) and islice_next (itertoolsmodule.c). These bugs 8446 caused test failures with recent versions of Clang. 8447 8448 - Issue #12904: os.utime, os.futimes, os.lutimes, and os.futimesat now write 8449 atime and mtime with nanosecond precision on modern POSIX platforms. 8450 8451 - Issue #12802: the Windows error ERROR_DIRECTORY (numbered 267) is now 8452 mapped to POSIX errno ENOTDIR (previously EINVAL). 8453 8454 - Issue #9200: The str.is* methods now work with strings that contain non-BMP 8455 characters even in narrow Unicode builds. 8456 8457 - Issue #12791: Break reference cycles early when a generator exits with 8458 an exception. 8459 8460 - Issue #12773: Make __doc__ mutable on user-defined classes. 8461 8462 - Issue #12766: Raise a ValueError when creating a class with a class variable 8463 that conflicts with a name in __slots__. 8464 8465 - Issue #12266: Fix str.capitalize() to correctly uppercase/lowercase 8466 titlecased and cased non-letter characters. 8467 8468 - Issue #12732: In narrow unicode builds, allow Unicode identifiers which fall 8469 outside the BMP. 8470 8471 - Issue #12575: Validate user-generated AST before it is compiled. 8472 8473 - Make type(None), type(Ellipsis), and type(NotImplemented) callable. They 8474 return the respective singleton instances. 8475 8476 - Forbid summing bytes with sum(). 8477 8478 - Verify the types of AST strings and identifiers provided by the user before 8479 compiling them. 8480 8481 - Issue #12647: The None object now has a __bool__() method that returns False. 8482 Formerly, bool(None) returned False only because of special case logic 8483 in PyObject_IsTrue(). 8484 8485 - Issue #12579: str.format_map() now raises a ValueError if used on a 8486 format string that contains positional fields. Initial patch by 8487 Julian Berman. 8488 8489 - Issue #10271: Allow warnings.showwarning() be any callable. 8490 8491 - Issue #11627: Fix segfault when __new__ on an exception returns a 8492 non-exception class. 8493 8494 - Issue #12149: Update the method cache after a type's dictionary gets 8495 cleared by the garbage collector. This fixes a segfault when an instance 8496 and its type get caught in a reference cycle, and the instance's 8497 deallocator calls one of the methods on the type (e.g. when subclassing 8498 IOBase). Diagnosis and patch by Davide Rizzo. 8499 8500 - Issue #9611, Issue #9015: FileIO.read() clamps the length to INT_MAX on Windows. 8501 8502 - Issue #9642: Uniformize the tests on the availability of the mbcs codec, add 8503 a new HAVE_MBCS define. 8504 8505 - Issue #9642: Fix filesystem encoding initialization: use the ANSI code page 8506 on Windows if the mbcs codec is not available, and fail with a fatal error if 8507 we cannot get the locale encoding (if nl_langinfo(CODESET) is not available) 8508 instead of using UTF-8. 8509 8510 - When a generator yields, do not retain the caller's exception state on the 8511 generator. 8512 8513 - Issue #12475: Prevent generators from leaking their exception state into the 8514 caller's frame as they return for the last time. 8515 8516 - Issue #12291: You can now load multiple marshalled objects from a stream, 8517 with other data interleaved between marshalled objects. 8518 8519 - Issue #12356: When required positional or keyword-only arguments are not 8520 given, produce an informative error message which includes the name(s) of the 8521 missing arguments. 8522 8523 - Issue #12370: Fix super with no arguments when __class__ is overridden in the 8524 class body. 8525 8526 - Issue #12084: os.stat on Windows now works properly with relative symbolic 8527 links when called from any directory. 8528 8529 - Loosen type restrictions on the __dir__ method. __dir__ can now return any 8530 sequence, which will be converted to a list and sorted by dir(). 8531 8532 - Issue #12265: Make error messages produced by passing an invalid set of 8533 arguments to a function more informative. 8534 8535 - Issue #12225: Still allow Python to build if Python is not in its hg repo or 8536 mercurial is not installed. 8537 8538 - Issue #1195: my_fgets() now always clears errors before calling fgets(). Fix 8539 the following case: sys.stdin.read() stopped with CTRL+d (end of file), 8540 raw_input() interrupted by CTRL+c. 8541 8542 - Issue #12216: Allow unexpected EOF errors to happen on any line of the file. 8543 8544 - Issue #12199: The TryExcept and TryFinally and AST nodes have been unified 8545 into a Try node. 8546 8547 - Issue #9670: Increase the default stack size for secondary threads on 8548 Mac OS X and FreeBSD to reduce the chances of a crash instead of a 8549 "maximum recursion depth" RuntimeError exception. 8550 (patch by Ronald Oussoren) 8551 8552 - Issue #12106: The use of the multiple-with shorthand syntax is now reflected 8553 in the AST. 8554 8555 - Issue #12190: Try to use the same filename object when compiling unmarshalling 8556 a code objects in the same file. 8557 8558 - Issue #12166: Move implementations of dir() specialized for various types into 8559 the __dir__() methods of those types. 8560 8561 - Issue #5715: In socketserver, close the server socket in the child process. 8562 8563 - Correct lookup of __dir__ on objects. Among other things, this causes errors 8564 besides AttributeError found on lookup to be propagated. 8565 8566 - Issue #12060: Use sig_atomic_t type and volatile keyword in the signal 8567 module. Patch written by Charles-François Natali. 8568 8569 - Issue #1746656: Added the if_nameindex, if_indextoname, if_nametoindex 8570 methods to the socket module. 8571 8572 - Issue #12044: Fixed subprocess.Popen when used as a context manager to 8573 wait for the process to end when exiting the context to avoid unintentionally 8574 leaving zombie processes around. 8575 8576 - Issue #1195: Fix input() if it is interrupted by CTRL+d and then CTRL+c, 8577 clear the end-of-file indicator after CTRL+d. 8578 8579 - Issue #1856: Avoid crashes and lockups when daemon threads run while the 8580 interpreter is shutting down; instead, these threads are now killed when 8581 they try to take the GIL. 8582 8583 - Issue #9756: When calling a method descriptor or a slot wrapper descriptor, 8584 the check of the object type doesn't read the __class__ attribute anymore. 8585 Fix a crash if a class override its __class__ attribute (e.g. a proxy of the 8586 str type). Patch written by Andreas Stührk. 8587 8588 - Issue #10517: After fork(), reinitialize the TLS used by the PyGILState_* 8589 APIs, to avoid a crash with the pthread implementation in RHEL 5. Patch 8590 by Charles-François Natali. 8591 8592 - Issue #10914: Initialize correctly the filesystem codec when creating a new 8593 subinterpreter to fix a bootstrap issue with codecs implemented in Python, as 8594 the ISO-8859-15 codec. 8595 8596 - Issue #11918: OS/2 and VMS are no more supported because of the lack of 8597 maintainer. 8598 8599 - Issue #6780: fix starts/endswith error message to mention that tuples are 8600 accepted too. 8601 8602 - Issue #5057: fix a bug in the peepholer that led to non-portable pyc files 8603 between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP 8604 chars (e.g. "\U00012345"[0]). 8605 8606 - Issue #11845: Fix typo in rangeobject.c that caused a crash in 8607 compute_slice_indices. Patch by Daniel Urban. 8608 8609 - Issue #5673: Added a `timeout` keyword argument to subprocess.Popen.wait, 8610 subprocess.Popen.communicated, subprocess.call, subprocess.check_call, and 8611 subprocess.check_output. If the blocking operation takes more than `timeout` 8612 seconds, the `subprocess.TimeoutExpired` exception is raised. 8613 8614 - Issue #11650: PyOS_StdioReadline() retries fgets() if it was interrupted 8615 (EINTR), for example if the program is stopped with CTRL+z on Mac OS X. Patch 8616 written by Charles-Francois Natali. 8617 8618 - Issue #9319: Include the filename in "Non-UTF8 code ..." syntax error. 8619 8620 - Issue #10785: Store the filename as Unicode in the Python parser. 8621 8622 - Issue #11619: _PyImport_LoadDynamicModule() doesn't encode the path to bytes 8623 on Windows. 8624 8625 - Issue #10998: Remove mentions of -Q, sys.flags.division_warning and 8626 Py_DivisionWarningFlag left over from Python 2. 8627 8628 - Issue #11244: Remove an unnecessary peepholer check that was preventing 8629 negative zeros from being constant-folded properly. 8630 8631 - Issue #11395: io.FileIO().write() clamps the data length to 32,767 bytes on 8632 Windows if the file is a TTY to workaround a Windows bug. The Windows console 8633 returns an error (12: not enough space error) on writing into stdout if 8634 stdout mode is binary and the length is greater than 66,000 bytes (or less, 8635 depending on heap usage). 8636 8637 - Issue #11320: fix bogus memory management in Modules/getpath.c, leading to 8638 a possible crash when calling Py_SetPath(). 8639 8640 - Issue #11432: A bug was introduced in subprocess.Popen on posix systems with 8641 3.2.0 where the stdout or stderr file descriptor being the same as the stdin 8642 file descriptor would raise an exception. webbrowser.open would fail. fixed. 8643 8644 - Issue #9856: Change object.__format__ with a non-empty format string 8645 to be a DeprecationWarning. In 3.2 it was a PendingDeprecationWarning. 8646 In 3.4 it will be a TypeError. 8647 8648 - Issue #11244: The peephole optimizer is now able to constant-fold 8649 arbitrarily complex expressions. This also fixes a 3.2 regression where 8650 operations involving negative numbers were not constant-folded. 8651 8652 - Issue #11450: Don't truncate hg version info in Py_GetBuildInfo() when 8653 there are many tags (e.g. when using mq). Patch by Nadeem Vawda. 8654 8655 - Issue #11335: Fixed a memory leak in list.sort when the key function 8656 throws an exception. 8657 8658 - Issue #8923: When a string is encoded to UTF-8 in strict mode, the result is 8659 cached into the object. Examples: str.encode(), str.encode('utf-8'), 8660 PyUnicode_AsUTF8String() and PyUnicode_AsEncodedString(unicode, "utf-8", 8661 NULL). 8662 8663 - Issue #10829: Refactor PyUnicode_FromFormat(), use the same function to parse 8664 the format string in the 3 steps, fix crashes on invalid format strings. 8665 8666 - Issue #13007: whichdb should recognize gdbm 1.9 magic numbers. 8667 8668 - Issue #11286: Raise a ValueError from calling PyMemoryView_FromBuffer with 8669 a buffer struct having a NULL data pointer. 8670 8671 - Issue #11272: On Windows, input() strips '\r' (and not only '\n'), and 8672 sys.stdin uses universal newline (replace '\r\n' by '\n'). 8673 8674 - Issue #11828: startswith and endswith now accept None as slice index. 8675 Patch by Torsten Becker. 8676 8677 - Issue #11168: Remove filename debug variable from PyEval_EvalFrameEx(). 8678 It encoded the Unicode filename to UTF-8, but the encoding fails on 8679 undecodable filename (on surrogate characters) which raises an unexpected 8680 UnicodeEncodeError on recursion limit. 8681 8682 - Issue #11187: Remove bootstrap code (use ASCII) of 8683 PyUnicode_AsEncodedString(), it was replaced by a better fallback (use the 8684 locale encoding) in PyUnicode_EncodeFSDefault(). 8685 8686 - Check for NULL result in PyType_FromSpec. 8687 8688 - Issue #10516: New copy() and clear() methods for lists and bytearrays. 8689 8690 - Issue #11386: bytearray.pop() now throws IndexError when the bytearray is 8691 empty, instead of OverflowError. 8692 8693 - Issue #12380: The rjust, ljust and center methods of bytes and bytearray 8694 now accept a bytearray argument. 8695 8696 Library 8697 ------- 8698 8699 - Issue #14195: An issue that caused weakref.WeakSet instances to incorrectly 8700 return True for a WeakSet instance 'a' in both 'a < a' and 'a > a' has been 8701 fixed. 8702 8703 - Issue #14166: Pickler objects now have an optional ``dispatch_table`` 8704 attribute which allows setting custom per-pickler reduction functions. 8705 Patch by sbt. 8706 8707 - Issue #14177: marshal.loads() now raises TypeError when given a unicode 8708 string. Patch by Guilherme Gonçalves. 8709 8710 - Issue #13550: Remove the debug machinery from the threading module: remove 8711 verbose arguments from all threading classes and functions. 8712 8713 - Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, 8714 WeakValueDictionary) to return a better approximation when some objects 8715 are dead or dying. Moreover, the implementation is now O(1) rather than 8716 O(n). 8717 8718 - Issue #11841: Fix comparison bug with 'rc' versions in packaging.version. 8719 Patch by Filip Gruszczyński. 8720 8721 - Issue #6884: Fix long-standing bugs with MANIFEST.in parsing in distutils 8722 on Windows. Also fixed in packaging. 8723 8724 - Issue #8033: sqlite3: Fix 64-bit integer handling in user functions 8725 on 32-bit architectures. Initial patch by Philippe Devalkeneer. 8726 8727 - HTMLParser is now able to handle slashes in the start tag. 8728 8729 - Issue #13641: Decoding functions in the base64 module now accept ASCII-only 8730 unicode strings. Patch by Catalin Iacob. 8731 8732 - Issue #14043: Speed up importlib's _FileFinder by at least 8x, and add a 8733 new importlib.invalidate_caches() function. 8734 8735 - Issue #14001: CVE-2012-0845: xmlrpc: Fix an endless loop in 8736 SimpleXMLRPCServer upon malformed POST request. 8737 8738 - Issue #13961: Move importlib over to using os.replace() for atomic renaming. 8739 8740 - Do away with ambiguous level values (as suggested by PEP 328) in 8741 importlib.__import__() by raising ValueError when level < 0. 8742 8743 - Issue #2489: pty.spawn could consume 100% cpu when it encountered an EOF. 8744 8745 - Issue #13014: Fix a possible reference leak in SSLSocket.getpeercert(). 8746 8747 - Issue #13777: Add PF_SYSTEM sockets on OS X. 8748 Patch by Michael Goderbauer. 8749 8750 - Issue #13015: Fix a possible reference leak in defaultdict.__repr__. 8751 Patch by Suman Saha. 8752 8753 - Issue #1326113: distutils' and packaging's build_ext commands option now 8754 correctly parses multiple values (separated by whitespace or commas) given 8755 to their --libraries option. 8756 8757 - Issue #10287: nntplib now queries the server's CAPABILITIES first before 8758 sending MODE READER, and only sends it if not already in READER mode. 8759 Patch by Hynek Schlawack. 8760 8761 - Issue #13993: HTMLParser is now able to handle broken end tags when 8762 strict=False. 8763 8764 - Issue #13930: lib2to3 now supports writing converted output files to another 8765 directory tree as well as copying unchanged files and altering the file 8766 suffix. 8767 8768 - Issue #9750: Fix sqlite3.Connection.iterdump on tables and fields 8769 with a name that is a keyword or contains quotes. Patch by Marko 8770 Kohtala. 8771 8772 - Issue #10287: nntplib now queries the server's CAPABILITIES again after 8773 authenticating (since the result may change, according to RFC 4643). 8774 Patch by Hynek Schlawack. 8775 8776 - Issue #13590: On OS X 10.7 and 10.6 with Xcode 4.2, building 8777 Distutils-based packages with C extension modules may fail because 8778 Apple has removed gcc-4.2, the version used to build python.org 8779 64-bit/32-bit Pythons. If the user does not explicitly override 8780 the default C compiler by setting the CC environment variable, 8781 Distutils will now attempt to compile extension modules with clang 8782 if gcc-4.2 is required but not found. Also as a convenience, if 8783 the user does explicitly set CC, substitute its value as the default 8784 compiler in the Distutils LDSHARED configuration variable for OS X. 8785 (Note, the python.org 32-bit-only Pythons use gcc-4.0 and the 10.4u 8786 SDK, neither of which are available in Xcode 4. This change does not 8787 attempt to override settings to support their use with Xcode 4.) 8788 8789 - Issue #13960: HTMLParser is now able to handle broken comments when 8790 strict=False. 8791 8792 - When '' is a path (e.g. in sys.path), make sure __file__ uses the current 8793 working directory instead of '' in importlib. 8794 8795 - Issue #13609: Add two functions to query the terminal size: 8796 os.get_terminal_size (low level) and shutil.get_terminal_size (high level). 8797 Patch by Zbigniew Jędrzejewski-Szmek. 8798 8799 - Issue #13845: On Windows, time.time() now uses GetSystemTimeAsFileTime() 8800 instead of ftime() to have a resolution of 100 ns instead of 1 ms (the clock 8801 accuracy is between 0.5 ms and 15 ms). 8802 8803 - Issue #13846: Add time.monotonic(), monotonic clock. 8804 8805 - Issue #8184: multiprocessing: On Windows, don't set SO_REUSEADDR on 8806 Connection sockets, and set FILE_FLAG_FIRST_PIPE_INSTANCE on named pipes, to 8807 make sure two listeners can't bind to the same socket/pipe (or any existing 8808 socket/pipe). 8809 8810 - Issue #10811: Fix recursive usage of cursors. Instead of crashing, 8811 raise a ProgrammingError now. 8812 8813 - Issue #13734: Add os.fwalk(), a directory walking function yielding file 8814 descriptors. 8815 8816 - Issue #2945: Make the distutils upload command aware of bdist_rpm products. 8817 8818 - Issue #13712: pysetup create should not convert package_data to extra_files. 8819 8820 - Issue #11805: package_data in setup.cfg should allow more than one value. 8821 8822 - Issue #13676: Handle strings with embedded zeros correctly in sqlite3. 8823 8824 - Issue #8828: Add new function os.replace(), for cross-platform renaming 8825 with overwriting. 8826 8827 - Issue #13848: open() and the FileIO constructor now check for NUL 8828 characters in the file name. Patch by Hynek Schlawack. 8829 8830 - Issue #13806: The size check in audioop decompression functions was too 8831 strict and could reject valid compressed data. Patch by Oleg Plakhotnyuk. 8832 8833 - Issue #13812: When a multiprocessing Process child raises an exception, 8834 flush stderr after printing the exception traceback. 8835 8836 - Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC 8837 IV attack countermeasure. 8838 8839 - Issue #13847: time.localtime() and time.gmtime() now raise an OSError instead 8840 of ValueError on failure. time.ctime() and time.asctime() now raises an 8841 OSError if localtime() failed. time.clock() now raises a RuntimeError if the 8842 processor time used is not available or its value cannot be represented 8843 8844 - Issue #13772: In os.symlink() under Windows, do not try to guess the link 8845 target's type (file or directory). The detection was buggy and made the 8846 call non-atomic (therefore prone to race conditions). 8847 8848 - Issue #6631: Disallow relative file paths in urllib urlopen methods. 8849 8850 - Issue #13722: Avoid silencing ImportErrors when initializing the codecs 8851 registry. 8852 8853 - Issue #13781: Fix GzipFile bug that caused an exception to be raised when 8854 opening for writing using a fileobj returned by os.fdopen(). 8855 8856 - Issue #13803: Under Solaris, distutils doesn't include bitness 8857 in the directory name. 8858 8859 - Issue #10278: Add time.wallclock() function, monotonic clock. 8860 8861 - Issue #13809: Fix regression where bz2 module wouldn't work when threads are 8862 disabled. Original patch by Amaury Forgeot d'Arc. 8863 8864 - Issue #13589: Fix some serialization primitives in the aifc module. 8865 Patch by Oleg Plakhotnyuk. 8866 8867 - Issue #13642: Unquote before b64encoding user:password during Basic 8868 Authentication. Patch contributed by Joonas Kuorilehto. 8869 8870 - Issue #12364: Fix a hang in concurrent.futures.ProcessPoolExecutor. 8871 The hang would occur when retrieving the result of a scheduled future after 8872 the executor had been shut down. 8873 8874 - Issue #13502: threading: Fix a race condition in Event.wait() that made it 8875 return False when the event was set and cleared right after. 8876 8877 - Issue #9993: When the source and destination are on different filesystems, 8878 and the source is a symlink, shutil.move() now recreates a symlink on the 8879 destination instead of copying the file contents. Patch by Jonathan Niehof 8880 and Hynek Schlawack. 8881 8882 - Issue #12926: Fix a bug in tarfile's link extraction. 8883 8884 - Issue #13696: Fix the 302 Relative URL Redirection problem. 8885 8886 - Issue #13636: Weak ciphers are now disabled by default in the ssl module 8887 (except when SSLv2 is explicitly asked for). 8888 8889 - Issue #12715: Add an optional symlinks argument to shutil functions 8890 (copyfile, copymode, copystat, copy, copy2). When that parameter is 8891 true, symlinks aren't dereferenced and the operation instead acts on the 8892 symlink itself (or creates one, if relevant). Patch by Hynek Schlawack. 8893 8894 - Add a flags parameter to select.epoll. 8895 8896 - Issue #13626: Add support for SSL Diffie-Hellman key exchange, through the 8897 SSLContext.load_dh_params() method and the ssl.OP_SINGLE_DH_USE option. 8898 8899 - Issue #11006: Don't issue low level warning in subprocess when pipe2() fails. 8900 8901 - Issue #13620: Support for Chrome browser in webbrowser. Patch contributed 8902 by Arnaud Calmettes. 8903 8904 - Issue #11829: Fix code execution holes in inspect.getattr_static for 8905 metaclasses with metaclasses. Patch by Andreas Stührk. 8906 8907 - Issue #12708: Add starmap() and starmap_async() methods (similar to 8908 itertools.starmap()) to multiprocessing.Pool. Patch by Hynek Schlawack. 8909 8910 - Issue #1785: Fix inspect and pydoc with misbehaving descriptors. 8911 8912 - Issue #13637: "a2b" functions in the binascii module now accept ASCII-only 8913 unicode strings. 8914 8915 - Issue #13634: Add support for querying and disabling SSL compression. 8916 8917 - Issue #13627: Add support for SSL Elliptic Curve-based Diffie-Hellman 8918 key exchange, through the SSLContext.set_ecdh_curve() method and the 8919 ssl.OP_SINGLE_ECDH_USE option. 8920 8921 - Issue #13635: Add ssl.OP_CIPHER_SERVER_PREFERENCE, so that SSL servers 8922 choose the cipher based on their own preferences, rather than on the 8923 client's. 8924 8925 - Issue #11813: Fix inspect.getattr_static for modules. Patch by Andreas 8926 Stührk. 8927 8928 - Issue #7502: Fix equality comparison for DocTestCase instances. Patch by 8929 Cédric Krier. 8930 8931 - Issue #11870: threading: Properly reinitialize threads internal locks and 8932 condition variables to avoid deadlocks in child processes. 8933 8934 - Issue #8035: urllib: Fix a bug where the client could remain stuck after a 8935 redirection or an error. 8936 8937 - Issue #13560: os.strerror() now uses the current locale encoding instead of 8938 UTF-8. 8939 8940 - Issue #8373: The filesystem path of AF_UNIX sockets now uses the filesystem 8941 encoding and the surrogateescape error handler, rather than UTF-8. Patch 8942 by David Watson. 8943 8944 - Issue #10350: Read and save errno before calling a function which might 8945 overwrite it. Original patch by Hallvard B Furuseth. 8946 8947 - Issue #11610: Introduce a more general way to declare abstract properties. 8948 8949 - Issue #13591: A bug in importlib has been fixed that caused import_module 8950 to load a module twice. 8951 8952 - Issue #13449: sched.scheduler.run() method has a new "blocking" parameter which 8953 when set to False makes run() execute the scheduled events due to expire 8954 soonest (if any) and then return. Patch by Giampaolo Rodolà. 8955 8956 - Issue #8684: sched.scheduler class can be safely used in multi-threaded 8957 environments. Patch by Josiah Carlson and Giampaolo Rodolà. 8958 8959 - Alias resource.error to OSError ala PEP 3151. 8960 8961 - Issue #5689: Add support for lzma compression to the tarfile module. 8962 8963 - Issue #13248: Turn 3.2's PendingDeprecationWarning into 3.3's 8964 DeprecationWarning. It covers 'cgi.escape', 'importlib.abc.PyLoader', 8965 'importlib.abc.PyPycLoader', 'nntplib.NNTP.xgtitle', 'nntplib.NNTP.xpath', 8966 and private attributes of 'smtpd.SMTPChannel'. 8967 8968 - Issue #5905, Issue #13560: time.strftime() is now using the current locale 8969 encoding, instead of UTF-8, if the wcsftime() function is not available. 8970 8971 - Issue #13464: Add a readinto() method to http.client.HTTPResponse. Patch 8972 by Jon Kuhn. 8973 8974 - tarfile.py: Correctly detect bzip2 compressed streams with blocksizes 8975 other than 900k. 8976 8977 - Issue #13439: Fix many errors in turtle docstrings. 8978 8979 - Issue #6715: Add a module 'lzma' for compression using the LZMA algorithm. 8980 Thanks to Per Øyvind Karlsen for the initial implementation. 8981 8982 - Issue #13487: Make inspect.getmodule robust against changes done to 8983 sys.modules while it is iterating over it. 8984 8985 - Issue #12618: Fix a bug that prevented py_compile from creating byte 8986 compiled files in the current directory. Initial patch by Sjoerd de Vries. 8987 8988 - Issue #13444: When stdout has been closed explicitly, we should not attempt 8989 to flush it at shutdown and print an error. 8990 8991 - Issue #12567: The curses module uses Unicode functions for Unicode arguments 8992 when it is linked to the ncurses library. It encodes also Unicode strings to 8993 the locale encoding instead of UTF-8. 8994 8995 - Issue #12856: Ensure child processes do not inherit the parent's random 8996 seed for filename generation in the tempfile module. Patch by Brian 8997 Harring. 8998 8999 - Issue #9957: SpooledTemporaryFile.truncate() now accepts an optional size 9000 parameter, as other file-like objects. Patch by Ryan Kelly. 9001 9002 - Issue #13458: Fix a memory leak in the ssl module when decoding a 9003 certificate with a subjectAltName. Patch by Robert Xiao. 9004 9005 - Issue #13415: os.unsetenv() doesn't ignore errors anymore. 9006 9007 - Issue #13245: sched.scheduler class constructor's timefunc and 9008 delayfunct parameters are now optional. 9009 scheduler.enter and scheduler.enterabs methods gained a new kwargs parameter. 9010 Patch contributed by Chris Clark. 9011 9012 - Issue #12328: Under Windows, refactor handling of Ctrl-C events and 9013 make _multiprocessing.win32.WaitForMultipleObjects interruptible when 9014 the wait_flag parameter is false. Patch by sbt. 9015 9016 - Issue #13322: Fix BufferedWriter.write() to ensure that BlockingIOError is 9017 raised when the wrapped raw file is non-blocking and the write would block. 9018 Previous code assumed that the raw write() would raise BlockingIOError, but 9019 RawIOBase.write() is defined to returned None when the call would block. 9020 Patch by sbt. 9021 9022 - Issue #13358: HTMLParser now calls handle_data only once for each CDATA. 9023 9024 - Issue #4147: minidom's toprettyxml no longer adds whitespace around a text 9025 node when it is the only child of an element. Initial patch by Dan 9026 Kenigsberg. 9027 9028 - Issue #13374: The Windows bytes API has been deprecated in the os module. Use 9029 Unicode filenames instead of bytes filenames to not depend on the ANSI code 9030 page anymore and to support any filename. 9031 9032 - Issue #13297: Use bytes type to send and receive binary data through XMLRPC. 9033 9034 - Issue #6397: Support "/dev/poll" polling objects in select module, 9035 under Solaris & derivatives. 9036 9037 - Issues #1745761, #755670, #13357, #12629, #1200313: HTMLParser now correctly 9038 handles non-valid attributes, including adjacent and unquoted attributes. 9039 9040 - Issue #13193: Fix distutils.filelist.FileList and packaging.manifest.Manifest 9041 under Windows. 9042 9043 - Issue #13384: Remove unnecessary __future__ import in Lib/random.py 9044 9045 - Issue #13149: Speed up append-only StringIO objects. 9046 9047 - Issue #13373: multiprocessing.Queue.get() could sometimes block indefinitely 9048 when called with a timeout. Patch by Arnaud Ysmal. 9049 9050 - Issue #13254: Fix Maildir initialization so that maildir contents 9051 are read correctly. 9052 9053 - Issue #3067: locale.setlocale() now raises TypeError if the second 9054 argument is an invalid iterable. Its documentation and docstring 9055 were also updated. Initial patch by Jyrki Pulliainen. 9056 9057 - Issue #13140: Fix the daemon_threads attribute of ThreadingMixIn. 9058 9059 - Issue #13339: Fix compile error in posixmodule.c due to missing semicolon. 9060 Thanks to Robert Xiao. 9061 9062 - Byte compilation in packaging is now isolated from the calling Python -B or 9063 -O options, instead of being disallowed under -B or buggy under -O. 9064 9065 - Issue #10570: curses.putp() and curses.tparm() are now expecting a byte 9066 string, instead of a Unicode string. 9067 9068 - Issue #13295: http.server now produces valid HTML 4.01 strict. 9069 9070 - Issue #2892: preserve iterparse events in case of SyntaxError. 9071 9072 - Issue #13287: urllib.request and urllib.error now contains an __all__ 9073 attribute to expose only relevant classes and functions. Patch by Florent 9074 Xicluna. 9075 9076 - Issue #670664: Fix HTMLParser to correctly handle the content of 9077 ``<script>...</script>`` and ``<style>...</style>``. 9078 9079 - Issue #10817: Fix urlretrieve function to raise ContentTooShortError even 9080 when reporthook is None. Patch by Jyrki Pulliainen. 9081 9082 - Fix the xmlrpc.client user agent to return something similar to 9083 urllib.request user agent: "Python-xmlrpc/3.3". 9084 9085 - Issue #13293: Better error message when trying to marshal bytes using 9086 xmlrpc.client. 9087 9088 - Issue #13291: NameError in xmlrpc package. 9089 9090 - Issue #13258: Use callable() built-in in the standard library. 9091 9092 - Issue #13273: fix a bug that prevented HTMLParser to properly detect some 9093 tags when strict=False. 9094 9095 - Issue #11183: Add finer-grained exceptions to the ssl module, so that 9096 you don't have to inspect the exception's attributes in the common case. 9097 9098 - Issue #13216: Add cp65001 codec, the Windows UTF-8 (CP_UTF8). 9099 9100 - Issue #13226: Add RTLD_xxx constants to the os module. These constants can be 9101 used with sys.setdlopenflags(). 9102 9103 - Issue #10278: Add clock_getres(), clock_gettime() and CLOCK_xxx constants to 9104 the time module. time.clock_gettime(time.CLOCK_MONOTONIC) provides a 9105 monotonic clock 9106 9107 - Issue #10332: multiprocessing: fix a race condition when a Pool is closed 9108 before all tasks have completed. 9109 9110 - Issue #13255: wrong docstrings in array module. 9111 9112 - Issue #8540: Remove deprecated Context._clamp attribute in Decimal module. 9113 9114 - Issue #13235: Added DeprecationWarning to logging.warn() method and function. 9115 9116 - Issue #9168: now smtpd is able to bind privileged port. 9117 9118 - Issue #12529: fix cgi.parse_header issue on strings with double-quotes and 9119 semicolons together. Patch by Ben Darnell and Petri Lehtinen. 9120 9121 - Issue #13227: functools.lru_cache() now has an option to distinguish 9122 calls with different argument types. 9123 9124 - Issue #6090: zipfile raises a ValueError when a document with a timestamp 9125 earlier than 1980 is provided. Patch contributed by Petri Lehtinen. 9126 9127 - Issue #13150: sysconfig no longer parses the Makefile and config.h files 9128 when imported, instead doing it at build time. This makes importing 9129 sysconfig faster and reduces Python startup time by 20%. 9130 9131 - Issue #12448: smtplib now flushes stdout while running ``python -m smtplib`` 9132 in order to display the prompt correctly. 9133 9134 - Issue #12454: The mailbox module is now using ASCII, instead of the locale 9135 encoding, to read and write .mh_sequences files. 9136 9137 - Issue #13194: zlib.compressobj().copy() and zlib.decompressobj().copy() are 9138 now available on Windows. 9139 9140 - Issue #1673007: urllib.request now supports HEAD request via new method argument. 9141 Patch contributions by David Stanek, Patrick Westerhoff and Ezio Melotti. 9142 9143 - Issue #12386: packaging does not fail anymore when writing the RESOURCES 9144 file. 9145 9146 - Issue #13158: Fix decoding and encoding of GNU tar specific base-256 number 9147 fields in tarfile. 9148 9149 - Issue #13025: mimetypes is now reading MIME types using the UTF-8 encoding, 9150 instead of the locale encoding. 9151 9152 - Issue #10653: On Windows, use strftime() instead of wcsftime() because 9153 wcsftime() doesn't format time zone correctly. 9154 9155 - Issue #13150: The tokenize module doesn't compile large regular expressions 9156 at startup anymore. 9157 9158 - Issue #11171: Fix distutils.sysconfig.get_makefile_filename when Python was 9159 configured with different prefix and exec-prefix. 9160 9161 - Issue #11254: Teach distutils and packaging to compile .pyc and .pyo files in 9162 PEP 3147-compliant __pycache__ directories. 9163 9164 - Issue #7367: Fix pkgutil.walk_paths to skip directories whose 9165 contents cannot be read. 9166 9167 - Issue #3163: The struct module gets new format characters 'n' and 'N' 9168 supporting C integer types ``ssize_t`` and ``size_t``, respectively. 9169 9170 - Issue #13099: Fix sqlite3.Cursor.lastrowid under a Turkish locale. 9171 Reported and diagnosed by Thomas Kluyver. 9172 9173 - Issue #13087: BufferedReader.seek() now always raises UnsupportedOperation 9174 if the underlying raw stream is unseekable, even if the seek could be 9175 satisfied using the internal buffer. Patch by John O'Connor. 9176 9177 - Issue #7689: Allow pickling of dynamically created classes when their 9178 metaclass is registered with copyreg. Patch by Nicolas M. Thiéry and Craig 9179 Citro. 9180 9181 - Issue #13034: When decoding some SSL certificates, the subjectAltName 9182 extension could be unreported. 9183 9184 - Issue #12306: Expose the runtime version of the zlib C library as a constant, 9185 ZLIB_RUNTIME_VERSION, in the zlib module. Patch by Torsten Landschoff. 9186 9187 - Issue #12959: Add collections.ChainMap to collections.__all__. 9188 9189 - Issue #8933: distutils' PKG-INFO files and packaging's METADATA files will 9190 now correctly report Metadata-Version: 1.1 instead of 1.0 if a Classifier or 9191 Download-URL field is present. 9192 9193 - Issue #12567: Add curses.unget_wch() function. Push a character so the next 9194 get_wch() will return it. 9195 9196 - Issue #9561: distutils and packaging now writes egg-info files using UTF-8, 9197 instead of the locale encoding. 9198 9199 - Issue #8286: The distutils command sdist will print a warning message instead 9200 of crashing when an invalid path is given in the manifest template. 9201 9202 - Issue #12841: tarfile unnecessarily checked the existence of numerical user 9203 and group ids on extraction. If one of them did not exist the respective id 9204 of the current user (i.e. root) was used for the file and ownership 9205 information was lost. 9206 9207 - Issue #12888: Fix a bug in HTMLParser.unescape that prevented it to escape 9208 more than 128 entities. Patch by Peter Otten. 9209 9210 - Issue #12878: Expose a __dict__ attribute on io.IOBase and its subclasses. 9211 9212 - Issue #12494: On error, call(), check_call(), check_output() and 9213 getstatusoutput() functions of the subprocess module now kill the process, 9214 read its status (to avoid zombis) and close pipes. 9215 9216 - Issue #12720: Expose low-level Linux extended file attribute functions in os. 9217 9218 - Issue #10946: The distutils commands bdist_dumb, bdist_wininst and bdist_msi 9219 now respect a --skip-build option given to bdist. The packaging commands 9220 were fixed too. 9221 9222 - Issue #12847: Fix a crash with negative PUT and LONG_BINPUT arguments in 9223 the C pickle implementation. 9224 9225 - Issue #11564: Avoid crashes when trying to pickle huge objects or containers 9226 (more than 2**31 items). Instead, in most cases, an OverflowError is raised. 9227 9228 - Issue #12287: Fix a stack corruption in ossaudiodev module when the FD is 9229 greater than FD_SETSIZE. 9230 9231 - Issue #12839: Fix crash in zlib module due to version mismatch. 9232 Fix by Richard M. Tew. 9233 9234 - Issue #9923: The mailcap module now correctly uses the platform path 9235 separator for the MAILCAP environment variable on non-POSIX platforms. 9236 9237 - Issue #12835: Follow up to #6560 that unconditionally prevents use of the 9238 unencrypted sendmsg/recvmsg APIs on SSL wrapped sockets. Patch by David 9239 Watson. 9240 9241 - Issue #12803: SSLContext.load_cert_chain() now accepts a password argument 9242 to be used if the private key is encrypted. Patch by Adam Simpkins. 9243 9244 - Issue #11657: Fix sending file descriptors over 255 over a multiprocessing 9245 Pipe. 9246 9247 - Issue #12811: tabnanny.check() now promptly closes checked files. Patch by 9248 Anthony Briggs. 9249 9250 - Issue #6560: The sendmsg/recvmsg API is now exposed by the socket module 9251 when provided by the underlying platform, supporting processing of 9252 ancillary data in pure Python code. Patch by David Watson and Heiko Wundram. 9253 9254 - Issue #12326: On Linux, sys.platform doesn't contain the major version 9255 anymore. It is now always 'linux', instead of 'linux2' or 'linux3' depending 9256 on the Linux version used to build Python. 9257 9258 - Issue #12213: Fix a buffering bug with interleaved reads and writes that 9259 could appear on BufferedRandom streams. 9260 9261 - Issue #12778: Reduce memory consumption when JSON-encoding a large 9262 container of many small objects. 9263 9264 - Issue #12650: Fix a race condition where a subprocess.Popen could leak 9265 resources (FD/zombie) when killed at the wrong time. 9266 9267 - Issue #12744: Fix inefficient representation of integers between 2**31 and 9268 2**63 on systems with a 64-bit C "long". 9269 9270 - Issue #12646: Add an 'eof' attribute to zlib.Decompress, to make it easier to 9271 detect truncated input streams. 9272 9273 - Issue #11513: Fix exception handling ``tarfile.TarFile.gzopen()`` when 9274 the file cannot be opened. 9275 9276 - Issue #12687: Fix a possible buffering bug when unpickling text mode 9277 (protocol 0, mostly) pickles. 9278 9279 - Issue #10087: Fix the html output format of the calendar module. 9280 9281 - Issue #13121: add support for inplace math operators to collections.Counter. 9282 9283 - Add support for unary plus and unary minus to collections.Counter. 9284 9285 - Issue #12683: urlparse updated to include svn as schemes that uses relative 9286 paths. (svn from 1.5 onwards support relative path). 9287 9288 - Issue #12655: Expose functions from sched.h in the os module: sched_yield(), 9289 sched_setscheduler(), sched_getscheduler(), sched_setparam(), 9290 sched_get_min_priority(), sched_get_max_priority(), sched_rr_get_interval(), 9291 sched_getaffinity(), sched_setaffinity(). 9292 9293 - Add ThreadError to threading.__all__. 9294 9295 - Issues #11104, #8688: Fix the behavior of distutils' sdist command with 9296 manually-maintained MANIFEST files. 9297 9298 - Issue #11281: smtplib.STMP gets source_address parameter, which adds the 9299 ability to bind to specific source address on a machine with multiple 9300 interfaces. Patch by Paulo Scardine. 9301 9302 - Issue #12464: tempfile.TemporaryDirectory.cleanup() should not follow 9303 symlinks: fix it. Patch by Petri Lehtinen. 9304 9305 - Issue #8887: "pydoc somebuiltin.somemethod" (or help('somebuiltin.somemethod') 9306 in Python code) now finds the doc of the method. 9307 9308 - Issue #10968: Remove indirection in threading. The public names (Event, 9309 Condition, etc.) used to be factory functions returning instances of hidden 9310 classes (_Event, _Condition, etc.), because (if Guido recalls correctly) this 9311 code pre-dates the ability to subclass extension types. It is now possible 9312 to inherit from these classes, without having to import the private 9313 underscored names like multiprocessing did. 9314 9315 - Issue #9723: Add shlex.quote functions, to escape filenames and command 9316 lines. 9317 9318 - Issue #12603: Fix pydoc.synopsis() on files with non-negative st_mtime. 9319 9320 - Issue #12514: Use try/finally to assure the timeit module restores garbage 9321 collections when it is done. 9322 9323 - Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is 9324 given as a low fd, it gets overwritten. 9325 9326 - Issue #12576: Fix urlopen behavior on sites which do not send (or obfuscates) 9327 ``Connection: close`` header. 9328 9329 - Issue #12560: Build libpython.so on OpenBSD. Patch by Stefan Sperling. 9330 9331 - Issue #1813: Fix codec lookup under Turkish locales. 9332 9333 - Issue #12591: Improve support of "universal newlines" in the subprocess 9334 module: the piped streams can now be properly read from or written to. 9335 9336 - Issue #12591: Allow io.TextIOWrapper to work with raw IO objects (without 9337 a read1() method), and add a *write_through* parameter to mandate 9338 unbuffered writes. 9339 9340 - Issue #10883: Fix socket leaks in urllib.request when using FTP. 9341 9342 - Issue #12592: Make Python build on OpenBSD 5 (and future major releases). 9343 9344 - Issue #12372: POSIX semaphores are broken on AIX: don't use them. 9345 9346 - Issue #12551: Provide a get_channel_binding() method on SSL sockets so as 9347 to get channel binding data for the current SSL session (only the 9348 "tls-unique" channel binding is implemented). This allows the implementation 9349 of certain authentication mechanisms such as SCRAM-SHA-1-PLUS. Patch by 9350 Jacek Konieczny. 9351 9352 - Issue #665194: email.utils now has format_datetime and parsedate_to_datetime 9353 functions, allowing for round tripping of RFC2822 format dates. 9354 9355 - Issue #12571: Add a plat-linux3 directory mirroring the plat-linux2 9356 directory, so that "import DLFCN" and other similar imports work on 9357 Linux 3.0. 9358 9359 - Issue #7484: smtplib no longer puts <> around addresses in VRFY and EXPN 9360 commands; they aren't required and in fact postfix doesn't support that form. 9361 9362 - Issue #12273: Remove ast.__version__. AST changes can be accounted for by 9363 checking sys.version_info or sys._mercurial. 9364 9365 - Silence spurious "broken pipe" tracebacks when shutting down a 9366 ProcessPoolExecutor. 9367 9368 - Fix potential resource leaks in concurrent.futures.ProcessPoolExecutor 9369 by joining all queues and processes when shutdown() is called. 9370 9371 - Issue #11603: Fix a crash when __str__ is rebound as __repr__. Patch by 9372 Andreas Stührk. 9373 9374 - Issue #11321: Fix a crash with multiple imports of the _pickle module when 9375 embedding Python. Patch by Andreas Stührk. 9376 9377 - Issue #6755: Add get_wch() method to curses.window class. Patch by Iñigo 9378 Serna. 9379 9380 - Add cgi.closelog() function to close the log file. 9381 9382 - Issue #12502: asyncore: fix polling loop with AF_UNIX sockets. 9383 9384 - Issue #4376: ctypes now supports nested structures in an endian different than 9385 the parent structure. Patch by Vlad Riscutia. 9386 9387 - Raise ValueError when attempting to set the _CHUNK_SIZE attribute of a 9388 TextIOWrapper to a huge value, not TypeError. 9389 9390 - Issue #12504: Close file handles in a timely manner in packaging.database. 9391 This fixes a bug with the remove (uninstall) feature on Windows. 9392 9393 - Issues #12169 and #10510: Factor out code used by various packaging commands 9394 to make HTTP POST requests, and make sure it uses CRLF. 9395 9396 - Issue #12016: Multibyte CJK decoders now resynchronize faster. They only 9397 ignore the first byte of an invalid byte sequence. For example, 9398 b'\xff\n'.decode('gb2312', 'replace') gives '\ufffd\n' instead of '\ufffd'. 9399 9400 - Issue #12459: time.sleep() now raises a ValueError if the sleep length is 9401 negative, instead of an infinite sleep on Windows or raising an IOError on 9402 Linux for example, to have the same behaviour on all platforms. 9403 9404 - Issue #12451: pydoc: html_getfile() now uses tokenize.open() to support 9405 Python scripts using an encoding different than UTF-8 (read the coding cookie 9406 of the script). 9407 9408 - Issue #12493: subprocess: Popen.communicate() now also handles EINTR errors 9409 if the process has only one pipe. 9410 9411 - Issue #12467: warnings: fix a race condition if a warning is emitted at 9412 shutdown, if globals()['__file__'] is None. 9413 9414 - Issue #12451: pydoc: importfile() now opens the Python script in binary mode, 9415 instead of text mode using the locale encoding, to avoid encoding issues. 9416 9417 - Issue #12451: runpy: run_path() now opens the Python script in binary mode, 9418 instead of text mode using the locale encoding, to support other encodings 9419 than UTF-8 (scripts using the coding cookie). 9420 9421 - Issue #12451: xml.dom.pulldom: parse() now opens files in binary mode instead 9422 of the text mode (using the locale encoding) to avoid encoding issues. 9423 9424 - Issue #12147: Adjust the new-in-3.2 smtplib.send_message method for better 9425 conformance to the RFCs: correctly handle Sender and Resent- headers. 9426 9427 - Issue #12352: Fix a deadlock in multiprocessing.Heap when a block is freed by 9428 the garbage collector while the Heap lock is held. 9429 9430 - Issue #12462: time.sleep() now immediately calls the (Python) signal handler 9431 if it is interrupted by a signal, instead of having to wait until the next 9432 instruction. 9433 9434 - Issue #12442: new shutil.disk_usage function, providing total, used and free 9435 disk space statistics. 9436 9437 - Issue #12451: The XInclude default loader of xml.etree now decodes files from 9438 UTF-8 instead of the locale encoding if the encoding is not specified. It now 9439 also opens XML files for the parser in binary mode instead of the text mode 9440 to avoid encoding issues. 9441 9442 - Issue #12451: doctest.debug_script() doesn't create a temporary file 9443 anymore to avoid encoding issues. 9444 9445 - Issue #12451: pydoc.synopsis() now reads the encoding cookie if available, 9446 to read the Python script from the right encoding. 9447 9448 - Issue #12451: distutils now opens the setup script in binary mode to read the 9449 encoding cookie, instead of opening it in UTF-8. 9450 9451 - Issue #9516: On Mac OS X, change Distutils to no longer globally attempt to 9452 check or set the MACOSX_DEPLOYMENT_TARGET environment variable for the 9453 interpreter process. This could cause failures in non-Distutils subprocesses 9454 and was unreliable since tests or user programs could modify the interpreter 9455 environment after Distutils set it. Instead, have Distutils set the 9456 deployment target only in the environment of each build subprocess. It is 9457 still possible to globally override the default by setting 9458 MACOSX_DEPLOYMENT_TARGET before launching the interpreter; its value must be 9459 greater or equal to the default value, the value with which the interpreter 9460 was built. Also, implement the same handling in packaging. 9461 9462 - Issue #12422: In the copy module, don't store objects that are their own copy 9463 in the memo dict. 9464 9465 - Issue #12303: Add sigwaitinfo() and sigtimedwait() to the signal module. 9466 9467 - Issue #12404: Remove C89 incompatible code from mmap module. Patch by Akira 9468 Kitada. 9469 9470 - Issue #1874: email now detects and reports as a defect the presence of 9471 any CTE other than 7bit, 8bit, or binary on a multipart. 9472 9473 - Issue #12383: Fix subprocess module with env={}: don't copy the environment 9474 variables, start with an empty environment. 9475 9476 - Issue #11637: Fix support for importing packaging setup hooks from the 9477 project directory. 9478 9479 - Issue #6771: Moved the curses.wrapper function from the single-function 9480 wrapper module into __init__, eliminating the module. Since __init__ was 9481 already importing the function to curses.wrapper, there is no API change. 9482 9483 - Issue #11584: email.header.decode_header no longer fails if the header 9484 passed to it is a Header object, and Header/make_header no longer fail 9485 if given binary unknown-8bit input. 9486 9487 - Issue #11700: mailbox proxy object close methods can now be called multiple 9488 times without error. 9489 9490 - Issue #11767: Correct file descriptor leak in mailbox's __getitem__ method. 9491 9492 - Issue #12133: AbstractHTTPHandler.do_open() of urllib.request closes the HTTP 9493 connection if its getresponse() method fails with a socket error. Patch 9494 written by Ezio Melotti. 9495 9496 - Issue #12240: Allow multiple setup hooks in packaging's setup.cfg files. 9497 Original patch by Erik Bray. 9498 9499 - Issue #9284: Allow inspect.findsource() to find the source of doctest 9500 functions. 9501 9502 - Issue #11595: Fix assorted bugs in packaging.util.cfg_to_args, a 9503 compatibility helper for the distutils-packaging transition. Original patch 9504 by Erik Bray. 9505 9506 - Issue #12287: In ossaudiodev, check that the device isn't closed in several 9507 methods. 9508 9509 - Issue #12009: Fixed regression in netrc file comment handling. 9510 9511 - Issue #12246: Warn and fail when trying to install a third-party project from 9512 an uninstalled Python (built in a source checkout). Original patch by 9513 Tshepang Lekhonkhobe. 9514 9515 - Issue #10694: zipfile now ignores garbage at the end of a zipfile. 9516 9517 - Issue #12283: Fixed regression in smtplib quoting of leading dots in DATA. 9518 9519 - Issue #10424: Argparse now includes the names of the missing required 9520 arguments in the missing arguments error message. 9521 9522 - Issue #12168: SysLogHandler now allows NUL termination to be controlled using 9523 a new 'append_nul' attribute on the handler. 9524 9525 - Issue #11583: Speed up os.path.isdir on Windows by using GetFileAttributes 9526 instead of os.stat. 9527 9528 - Issue #12021: Make mmap's read() method argument optional. Patch by Petri 9529 Lehtinen. 9530 9531 - Issue #9205: concurrent.futures.ProcessPoolExecutor now detects killed 9532 children and raises BrokenProcessPool in such a situation. Previously it 9533 would reliably freeze/deadlock. 9534 9535 - Issue #12040: Expose a new attribute ``sentinel`` on instances of 9536 ``multiprocessing.Process``. Also, fix Process.join() to not use polling 9537 anymore, when given a timeout. 9538 9539 - Issue #11893: Remove obsolete internal wrapper class ``SSLFakeFile`` in the 9540 smtplib module. Patch by Catalin Iacob. 9541 9542 - Issue #12080: Fix a Decimal.power() case that took an unreasonably long time 9543 to compute. 9544 9545 - Issue #12221: Remove __version__ attributes from pyexpat, pickle, tarfile, 9546 pydoc, tkinter, and xml.parsers.expat. This were useless version constants 9547 left over from the Mercurial transition 9548 9549 - Named tuples now work correctly with vars(). 9550 9551 - Issue #12085: Fix an attribute error in subprocess.Popen destructor if the 9552 constructor has failed, e.g. because of an undeclared keyword argument. Patch 9553 written by Oleg Oshmyan. 9554 9555 - Issue #12028: Make threading._get_ident() public, rename it to 9556 threading.get_ident() and document it. This function was already used using 9557 _thread.get_ident(). 9558 9559 - Issue #12171: IncrementalEncoder.reset() of CJK codecs (multibytecodec) calls 9560 encreset() instead of decreset(). 9561 9562 - Issue #12218: Removed wsgiref.egg-info. 9563 9564 - Issue #12196: Add pipe2() to the os module. 9565 9566 - Issue #985064: Make plistlib more resilient to faulty input plists. 9567 Patch by Mher Movsisyan. 9568 9569 - Issue #1625: BZ2File and bz2.decompress() now support multi-stream files. 9570 Initial patch by Nir Aides. 9571 9572 - Issue #12175: BufferedReader.read(-1) now calls raw.readall() if available. 9573 9574 - Issue #12175: FileIO.readall() now only reads the file position and size 9575 once. 9576 9577 - Issue #12175: RawIOBase.readall() now returns None if read() returns None. 9578 9579 - Issue #12175: FileIO.readall() now raises a ValueError instead of an IOError 9580 if the file is closed. 9581 9582 - Issue #11109: New service_action method for BaseServer, used by ForkingMixin 9583 class for cleanup. Initial Patch by Justin Warkentin. 9584 9585 - Issue #12045: Avoid duplicate execution of command in 9586 ctypes.util._get_soname(). Patch by Sijin Joseph. 9587 9588 - Issue #10818: Remove the Tk GUI and the serve() function of the pydoc module, 9589 pydoc -g has been deprecated in Python 3.2 and it has a new enhanced web 9590 server. 9591 9592 - Issue #1441530: In imaplib, read the data in one chunk to speed up large 9593 reads and simplify code. 9594 9595 - Issue #12070: Fix the Makefile parser of the sysconfig module to handle 9596 correctly references to "bogus variable" (e.g. "prefix=$/opt/python"). 9597 9598 - Issue #12100: Don't reset incremental encoders of CJK codecs at each call to 9599 their encode() method anymore, but continue to call the reset() method if the 9600 final argument is True. 9601 9602 - Issue #12049: Add RAND_bytes() and RAND_pseudo_bytes() functions to the ssl 9603 module. 9604 9605 - Issue #6501: os.device_encoding() returns None on Windows if the application 9606 has no console. 9607 9608 - Issue #12105: Add O_CLOEXEC to the os module. 9609 9610 - Issue #12079: Decimal('Infinity').fma(Decimal('0'), (3.91224318126786e+19+0j)) 9611 now raises TypeError (reflecting the invalid type of the 3rd argument) rather 9612 than Decimal.InvalidOperation. 9613 9614 - Issue #12124: zipimport doesn't keep a reference to zlib.decompress() anymore 9615 to be able to unload the module. 9616 9617 - Add the packaging module, an improved fork of distutils (also known as 9618 distutils2). 9619 9620 - Issue #12065: connect_ex() on an SSL socket now returns the original errno 9621 when the socket's timeout expires (it used to return None). 9622 9623 - Issue #8809: The SMTP_SSL constructor and SMTP.starttls() now support 9624 passing a ``context`` argument pointing to an ssl.SSLContext instance. 9625 Patch by Kasun Herath. 9626 9627 - Issue #9516: Issue #9516: avoid errors in sysconfig when MACOSX_DEPLOYMENT_TARGET 9628 is set in shell. 9629 9630 - Issue #8650: Make zlib module 64-bit clean. compress(), decompress() and 9631 their incremental counterparts now raise OverflowError if given an input 9632 larger than 4GB, instead of silently truncating the input and returning 9633 an incorrect result. 9634 9635 - Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail 9636 attribute when called without a max_length argument. 9637 9638 - Issue #12062: Fix a flushing bug when doing a certain type of I/O sequence 9639 on a file opened in read+write mode (namely: reading, seeking a bit forward, 9640 writing, then seeking before the previous write but still within buffered 9641 data, and writing again). 9642 9643 - Issue #9971: Write an optimized implementation of BufferedReader.readinto(). 9644 Patch by John O'Connor. 9645 9646 - Issue #11799: urllib.request Authentication Handlers will raise a ValueError 9647 when presented with an unsupported Authentication Scheme. Patch contributed 9648 by Yuval Greenfield. 9649 9650 - Issue #10419, #6011: build_scripts command of distutils handles correctly 9651 non-ASCII path (path to the Python executable). Open and write the script in 9652 binary mode, but ensure that the shebang is decodable from UTF-8 and from the 9653 encoding of the script. 9654 9655 - Issue #8498: In socket.accept(), allow specifying 0 as a backlog value in 9656 order to accept exactly one connection. Patch by Daniel Evers. 9657 9658 - Issue #12011: signal.signal() and signal.siginterrupt() raise an OSError, 9659 instead of a RuntimeError: OSError has an errno attribute. 9660 9661 - Issue #3709: add a flush_headers method to BaseHTTPRequestHandler, which 9662 manages the sending of headers to output stream and flushing the internal 9663 headers buffer. Patch contribution by Andrew Schaaf 9664 9665 - Issue #11743: Rewrite multiprocessing connection classes in pure Python. 9666 9667 - Issue #11164: Stop trying to use _xmlplus in the xml module. 9668 9669 - Issue #11888: Add log2 function to math module. Patch written by Mark 9670 Dickinson. 9671 9672 - Issue #12012: ssl.PROTOCOL_SSLv2 becomes optional. 9673 9674 - Issue #8407: The signal handler writes the signal number as a single byte 9675 instead of a nul byte into the wakeup file descriptor. So it is possible to 9676 wait more than one signal and know which signals were raised. 9677 9678 - Issue #8407: Add pthread_kill(), sigpending() and sigwait() functions to the 9679 signal module. 9680 9681 - Issue #11927: SMTP_SSL now uses port 465 by default as documented. Patch 9682 by Kasun Herath. 9683 9684 - Issue #12002: ftplib's abort() method raises TypeError. 9685 9686 - Issue #11916: Add a number of MacOSX specific definitions to the errno module. 9687 Patch by Pierre Carrier. 9688 9689 - Issue #11999: fixed sporadic sync failure mailbox.Maildir due to its trying to 9690 detect mtime changes by comparing to the system clock instead of to the 9691 previous value of the mtime. 9692 9693 - Issue #11072: added MLSD command (RFC-3659) support to ftplib. 9694 9695 - Issue #8808: The IMAP4_SSL constructor now allows passing an SSLContext 9696 parameter to control parameters of the secure channel. Patch by Sijin 9697 Joseph. 9698 9699 - ntpath.samefile failed to notice that "a.txt" and "A.TXT" refer to the same 9700 file on Windows XP. As noticed in issue #10684. 9701 9702 - Issue #12000: When a SSL certificate has a subjectAltName without any 9703 dNSName entry, ssl.match_hostname() should use the subject's commonName. 9704 Patch by Nicolas Bareil. 9705 9706 - Issue #10775: assertRaises, assertRaisesRegex, assertWarns, and 9707 assertWarnsRegex now accept a keyword argument 'msg' when used as context 9708 managers. Initial patch by Winston Ewert. 9709 9710 - Issue #10684: shutil.move used to delete a folder on case insensitive 9711 filesystems when the source and destination name where the same except 9712 for the case. 9713 9714 - Issue #11647: objects created using contextlib.contextmanager now support 9715 more than one call to the function when used as a decorator. Initial patch 9716 by Ysj Ray. 9717 9718 - Issue #11930: Removed deprecated time.accept2dyear variable. 9719 Removed year >= 1000 restriction from datetime.strftime. 9720 9721 - logging: don't define QueueListener if Python has no thread support. 9722 9723 - functools.cmp_to_key() now works with collections.Hashable(). 9724 9725 - Issue #11277: mmap.mmap() calls fcntl(fd, F_FULLFSYNC) on Mac OS X to get 9726 around a mmap bug with sparse files. Patch written by Steffen Daode Nurpmeso. 9727 9728 - Issue #8407: Add signal.pthread_sigmask() function to fetch and/or change the 9729 signal mask of the calling thread. 9730 9731 - Issue #11858: configparser.ExtendedInterpolation expected lower-case section 9732 names. 9733 9734 - Issue #11324: ConfigParser(interpolation=None) now works correctly. 9735 9736 - Issue #11811: ssl.get_server_certificate() is now IPv6-compatible. Patch 9737 by Charles-François Natali. 9738 9739 - Issue #11763: don't use difflib in TestCase.assertMultiLineEqual if the 9740 strings are too long. 9741 9742 - Issue #11236: getpass.getpass responds to ctrl-c or ctrl-z on terminal. 9743 9744 - Issue #11856: Speed up parsing of JSON numbers. 9745 9746 - Issue #11005: threading.RLock()._release_save() raises a RuntimeError if the 9747 lock was not acquired. 9748 9749 - Issue #11258: Speed up ctypes.util.find_library() under Linux by a factor 9750 of 5 to 10. Initial patch by Jonas H. 9751 9752 - Issue #11382: Trivial system calls, such as dup() or pipe(), needn't 9753 release the GIL. Patch by Charles-François Natali. 9754 9755 - Issue #11223: Add threading._info() function providing information about 9756 the thread implementation. 9757 9758 - Issue #11731: simplify/enhance email parser/generator API by introducing 9759 policy objects. 9760 9761 - Issue #11768: The signal handler of the signal module only calls 9762 Py_AddPendingCall() for the first signal to fix a deadlock on reentrant or 9763 parallel calls. PyErr_SetInterrupt() writes also into the wake up file. 9764 9765 - Issue #11492: fix several issues with header folding in the email package. 9766 9767 - Issue #11852: Add missing imports and update tests. 9768 9769 - Issue #11875: collections.OrderedDict's __reduce__ was temporarily 9770 mutating the object instead of just working on a copy. 9771 9772 - Issue #11467: Fix urlparse behavior when handling urls which contains scheme 9773 specific part only digits. Patch by Santoso Wijaya. 9774 9775 - collections.Counter().copy() now works correctly for subclasses. 9776 9777 - Issue #11474: Fix the bug with url2pathname() handling of '/C|/' on Windows. 9778 Patch by Santoso Wijaya. 9779 9780 - Issue #11684: complete email.parser bytes API by adding BytesHeaderParser. 9781 9782 - The bz2 module now handles 4GiB+ input buffers correctly. 9783 9784 - Issue #9233: Fix json.loads('{}') to return a dict (instead of a list), when 9785 _json is not available. 9786 9787 - Issue #11830: Remove unnecessary introspection code in the decimal module. 9788 9789 - Issue #11703: urllib2.geturl() does not return correct url when the original 9790 url contains #fragment. 9791 9792 - Issue #10019: Fixed regression in json module where an indent of 0 stopped 9793 adding newlines and acted instead like 'None'. 9794 9795 - Issue #11186: pydoc ignores a module if its name contains a surrogate 9796 character in the index of modules. 9797 9798 - Issue #11815: Use a light-weight SimpleQueue for the result queue in 9799 concurrent.futures.ProcessPoolExecutor. 9800 9801 - Issue #5162: Treat services like frozen executables to allow child spawning 9802 from multiprocessing.forking on Windows. 9803 9804 - logging.basicConfig now supports an optional 'handlers' argument taking an 9805 iterable of handlers to be added to the root logger. Additional parameter 9806 checks were also added to basicConfig. 9807 9808 - Issue #11814: Fix likely typo in multiprocessing.Pool._terminate(). 9809 9810 - Issue #11747: Fix range formatting in difflib.context_diff() and 9811 difflib.unified_diff(). 9812 9813 - Issue #8428: Fix a race condition in multiprocessing.Pool when terminating 9814 worker processes: new processes would be spawned while the pool is being 9815 shut down. Patch by Charles-François Natali. 9816 9817 - Issue #2650: re.escape() no longer escapes the '_'. 9818 9819 - Issue #11757: select.select() now raises ValueError when a negative timeout 9820 is passed (previously, a select.error with EINVAL would be raised). Patch 9821 by Charles-François Natali. 9822 9823 - Issue #7311: fix html.parser to accept non-ASCII attribute values. 9824 9825 - Issue #11605: email.parser.BytesFeedParser was incorrectly converting 9826 multipart subparts with an 8-bit CTE into unicode instead of preserving the 9827 bytes. 9828 9829 - Issue #1690608: email.util.formataddr is now RFC 2047 aware: it now has a 9830 charset parameter that defaults to utf-8 and is used as the charset for RFC 9831 2047 encoding when the realname contains non-ASCII characters. 9832 9833 - Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. 9834 9835 - Issue #10791: Implement missing method GzipFile.read1(), allowing GzipFile 9836 to be wrapped in a TextIOWrapper. Patch by Nadeem Vawda. 9837 9838 - Issue #11707: Added a fast C version of functools.cmp_to_key(). 9839 Patch by Filip Gruszczyński. 9840 9841 - Issue #11688: Add sqlite3.Connection.set_trace_callback(). Patch by 9842 Torsten Landschoff. 9843 9844 - Issue #11746: Fix SSLContext.load_cert_chain() to accept elliptic curve 9845 private keys. 9846 9847 - Issue #5863: Rewrite BZ2File in pure Python, and allow it to accept 9848 file-like objects using a new ``fileobj`` constructor argument. Patch by 9849 Nadeem Vawda. 9850 9851 - unittest.TestCase.assertSameElements has been removed. 9852 9853 - sys.getfilesystemencoding() raises a RuntimeError if initfsencoding() was not 9854 called yet: detect bootstrap (startup) issues earlier. 9855 9856 - Issue #11393: Add the new faulthandler module. 9857 9858 - Issue #11618: Fix the timeout logic in threading.Lock.acquire() under Windows. 9859 9860 - Removed the 'strict' argument to email.parser.Parser, which has been 9861 deprecated since Python 2.4. 9862 9863 - Issue #11256: Fix inspect.getcallargs on functions that take only keyword 9864 arguments. 9865 9866 - Issue #11696: Fix ID generation in msilib. 9867 9868 - itertools.accumulate now supports an optional *func* argument for 9869 a user-supplied binary function. 9870 9871 - Issue #11692: Remove unnecessary demo functions in subprocess module. 9872 9873 - Issue #9696: Fix exception incorrectly raised by xdrlib.Packer.pack_int when 9874 trying to pack a negative (in-range) integer. 9875 9876 - Issue #11675: multiprocessing.[Raw]Array objects created from an integer size 9877 are now zeroed on creation. This matches the behaviour specified by the 9878 documentation. 9879 9880 - Issue #7639: Fix short file name generation in bdist_msi 9881 9882 - Issue #11635: Don't use polling in worker threads and processes launched by 9883 concurrent.futures. 9884 9885 - Issue #5845: Automatically read readline configuration to enable completion 9886 in interactive mode. 9887 9888 - Issue #6811: Allow importlib to change a code object's co_filename attribute 9889 to match the path to where the source code currently is, not where the code 9890 object originally came from. 9891 9892 - Issue #8754: Have importlib use the repr of a module name in error messages. 9893 9894 - Issue #11591: Prevent "import site" from modifying sys.path when python 9895 was started with -S. 9896 9897 - collections.namedtuple() now adds a _source attribute to the generated 9898 class. This make the source more accessible than the outdated 9899 "verbose" option which prints to stdout but doesn't make the source 9900 string available. 9901 9902 - Issue #11371: Mark getopt error messages as localizable. Patch by Filip 9903 Gruszczyński. 9904 9905 - Issue #11333: Add __slots__ to collections ABCs. 9906 9907 - Issue #11628: cmp_to_key generated class should use __slots__. 9908 9909 - Issue #11666: let help() display named tuple attributes and methods 9910 that start with a leading underscore. 9911 9912 - Issue #11662: Make urllib and urllib2 ignore redirections if the 9913 scheme is not HTTP, HTTPS or FTP (CVE-2011-1521). 9914 9915 - Issue #5537: Fix time2isoz() and time2netscape() functions of 9916 httplib.cookiejar for expiration year greater than 2038 on 32-bit systems. 9917 9918 - Issue #4391: Use proper gettext plural forms in optparse. 9919 9920 - Issue #11127: Raise a TypeError when trying to pickle a socket object. 9921 9922 - Issue #11563: ``Connection: close`` header is sent by requests using URLOpener 9923 class which helps in closing of sockets after connection is over. Patch 9924 contributions by Jeff McNeil and Nadeem Vawda. 9925 9926 - Issue #11459: A ``bufsize`` value of 0 in subprocess.Popen() really creates 9927 unbuffered pipes, such that select() works properly on them. 9928 9929 - Issue #5421: Fix misleading error message when one of socket.sendto()'s 9930 arguments has the wrong type. Patch by Nikita Vetoshkin. 9931 9932 - Issue #10812: Add some extra posix functions to the os module. 9933 9934 - Issue #10979: unittest stdout buffering now works with class and module 9935 setup and teardown. 9936 9937 - Issue #11243: fix the parameter querying methods of Message to work if 9938 the headers contain un-encoded non-ASCII data. 9939 9940 - Issue #11401: fix handling of headers with no value; this fixes a regression 9941 relative to Python2 and the result is now the same as it was in Python2. 9942 9943 - Issue #9298: base64 bodies weren't being folded to line lengths less than 78, 9944 which was a regression relative to Python2. Unlike Python2, the last line 9945 of the folded body now ends with a carriage return. 9946 9947 - Issue #11560: shutil.unpack_archive now correctly handles the format 9948 parameter. Patch by Evan Dandrea. 9949 9950 - Issue #5870: Add `subprocess.DEVNULL` constant. 9951 9952 - Issue #11133: fix two cases where inspect.getattr_static can trigger code 9953 execution. Patch by Andreas Stührk. 9954 9955 - Issue #11569: use absolute path to the sysctl command in multiprocessing to 9956 ensure that it will be found regardless of the shell PATH. This ensures 9957 that multiprocessing.cpu_count works on default installs of MacOSX. 9958 9959 - Issue #11501: distutils.archive_utils.make_zipfile no longer fails if zlib is 9960 not installed. Instead, the zipfile.ZIP_STORED compression is used to create 9961 the ZipFile. Patch by Natalia B. Bidart. 9962 9963 - Issue #11289: `smtp.SMTP` class is now a context manager so it can be used 9964 in a `with` statement. Contributed by Giampaolo Rodola. 9965 9966 - Issue #11554: Fixed support for Japanese codecs; previously the body output 9967 encoding was not done if euc-jp or shift-jis was specified as the charset. 9968 9969 - Issue #11407: `TestCase.run` returns the result object used or created. 9970 Contributed by Janathan Hartley. 9971 9972 - Issue #11500: Fixed a bug in the OS X proxy bypass code for fully qualified 9973 IP addresses in the proxy exception list. 9974 9975 - Issue #11491: dbm.error is no longer raised when dbm.open is called with 9976 the "n" as the flag argument and the file exists. The behavior matches 9977 the documentation and general logic. 9978 9979 - Issue #1162477: Postel Principle adjustment to email date parsing: handle the 9980 fact that some non-compliant MUAs use '.' instead of ':' in time specs. 9981 9982 - Issue #11131: Fix sign of zero in decimal.Decimal plus and minus 9983 operations when the rounding mode is ROUND_FLOOR. 9984 9985 - Issue #9935: Speed up pickling of instances of user-defined classes. 9986 9987 - Issue #5622: Fix curses.wrapper to raise correct exception if curses 9988 initialization fails. 9989 9990 - Issue #11408: In threading.Lock.acquire(), only call gettimeofday() when 9991 really necessary. Patch by Charles-François Natali. 9992 9993 - Issue #11391: Writing to a mmap object created with 9994 ``mmap.PROT_READ|mmap.PROT_EXEC`` would segfault instead of raising a 9995 TypeError. Patch by Charles-François Natali. 9996 9997 - Issue #9795: add context management protocol support for nntplib.NNTP class. 9998 9999 - Issue #11306: mailbox in certain cases adapts to an inability to open 10000 certain files in read-write mode. Previously it detected this by 10001 checking for EACCES, now it also checks for EROFS. 10002 10003 - Issue #11265: asyncore now correctly handles EPIPE, EBADF and EAGAIN errors 10004 on accept(), send() and recv(). 10005 10006 - Issue #11377: Deprecate platform.popen() and reimplement it with os.popen(). 10007 10008 - Issue #8513: On UNIX, subprocess supports bytes command string. 10009 10010 - Issue #10866: Add socket.sethostname(). Initial patch by Ross Lagerwall. 10011 10012 - Issue #11140: Lock.release() now raises a RuntimeError when attempting 10013 to release an unacquired lock, as claimed in the threading documentation. 10014 The _thread.error exception is now an alias of RuntimeError. Patch by 10015 Filip Gruszczyński. Patch for _dummy_thread by Aymeric Augustin. 10016 10017 - Issue #8594: ftplib now provides a source_address parameter to specify which 10018 (address, port) to bind to before connecting. 10019 10020 - Issue #11326: Add the missing connect_ex() implementation for SSL sockets, 10021 and make it work for non-blocking connects. 10022 10023 - Issue #11297: Add collections.ChainMap(). 10024 10025 - Issue #10755: Add the posix.flistdir() function. Patch by Ross Lagerwall. 10026 10027 - Issue #4761: Add the ``*at()`` family of functions (openat(), etc.) to the 10028 posix module. Patch by Ross Lagerwall. 10029 10030 - Issue #7322: Trying to read from a socket's file-like object after a timeout 10031 occurred now raises an error instead of silently losing data. 10032 10033 - Issue #11291: poplib.POP no longer suppresses errors on quit(). 10034 10035 - Issue #11177: asyncore's create_socket() arguments can now be omitted. 10036 10037 - Issue #6064: Add a ``daemon`` keyword argument to the threading.Thread 10038 and multiprocessing.Process constructors in order to override the 10039 default behaviour of inheriting the daemonic property from the current 10040 thread/process. 10041 10042 - Issue #10956: Buffered I/O classes retry reading or writing after a signal 10043 has arrived and the handler returned successfully. 10044 10045 - Issue #10784: New os.getpriority() and os.setpriority() functions. 10046 10047 - Issue #11114: Fix catastrophic performance of tell() on text files (up 10048 to 1000x faster in some cases). It is still one to two order of magnitudes 10049 slower than binary tell(). 10050 10051 - Issue #10882: Add os.sendfile function. 10052 10053 - Issue #10868: Allow usage of the register method of an ABC as a class 10054 decorator. 10055 10056 - Issue #11224: Fixed a regression in tarfile that affected the file-like 10057 objects returned by TarFile.extractfile() regarding performance, memory 10058 consumption and failures with the stream interface. 10059 10060 - Issue #10924: Adding salt and Modular Crypt Format to crypt library. 10061 Moved old C wrapper to _crypt, and added a Python wrapper with 10062 enhanced salt generation and simpler API for password generation. 10063 10064 - Issue #11074: Make 'tokenize' so it can be reloaded. 10065 10066 - Issue #11085: Moved collections abstract base classes into a separate 10067 module called collections.abc, following the pattern used by importlib.abc. 10068 For backwards compatibility, the names are imported into the collections 10069 module. 10070 10071 - Issue #4681: Allow mmap() to work on file sizes and offsets larger than 10072 4GB, even on 32-bit builds. Initial patch by Ross Lagerwall, adapted for 10073 32-bit Windows. 10074 10075 - Issue #11169: compileall module uses repr() to format filenames and paths to 10076 escape surrogate characters and show spaces. 10077 10078 - Issue #11089: Fix performance issue limiting the use of ConfigParser() 10079 with large config files. 10080 10081 - Issue #10276: Fix the results of zlib.crc32() and zlib.adler32() on buffers 10082 larger than 4GB. Patch by Nadeem Vawda. 10083 10084 - Issue #11388: Added a clear() method to MutableSequence 10085 10086 - Issue #11174: Add argparse.MetavarTypeHelpFormatter, which uses type names 10087 for the names of optional and positional arguments in help messages. 10088 10089 - Issue #9348: Raise an early error if argparse nargs and metavar don't match. 10090 10091 - Issue #9026: Fix order of argparse sub-commands in help messages. 10092 10093 - Issue #9347: Fix formatting for tuples in argparse type= error messages. 10094 10095 - Issue #12191: Added shutil.chown() to change user and/or group owner of a 10096 given path also specifying their names. 10097 10098 - Issue #13988: The _elementtree accelerator is used whenever available. 10099 Now xml.etree.cElementTree becomes a deprecated alias to ElementTree. 10100 10101 Build 10102 ----- 10103 10104 - Issue #6807: Run msisupport.mak earlier. 10105 10106 - Issue #10580: Minor grammar change in Windows installer. 10107 10108 - Issue #13326: Clean __pycache__ directories correctly on OpenBSD. 10109 10110 - PEP 393: the configure option --with-wide-unicode is removed. 10111 10112 - Issue #12852: Set _XOPEN_SOURCE to 700, instead of 600, to get POSIX 2008 10113 functions on OpenBSD (e.g. fdopendir). 10114 10115 - Issue #11863: Remove support for legacy systems deprecated in Python 3.2 10116 (following PEP 11). These systems are systems using Mach C Threads, 10117 SunOS lightweight processes, GNU pth threads and IRIX threads. 10118 10119 - Issue #8746: Correct faulty configure checks so that os.chflags() and 10120 os.lchflags() are once again built on systems that support these 10121 functions (BSD and OS X). Also add new stat file flags for OS X 10122 (UF_HIDDEN and UF_COMPRESSED). 10123 10124 - Issue #10645: Installing Python no longer creates a 10125 Python-X.Y.Z-pyX.Y.egg-info file in the lib-dynload directory. 10126 10127 - Do not accidentally include the directory containing sqlite.h twice when 10128 building sqlite3. 10129 10130 - Issue #11217: For 64-bit/32-bit Mac OS X universal framework builds, 10131 ensure "make install" creates symlinks in --prefix bin for the "-32" 10132 files in the framework bin directory like the installer does. 10133 10134 - Issue #11347: Use --no-as-needed when linking libpython3.so. 10135 10136 - Issue #11411: Fix 'make DESTDIR=' with a relative destination. 10137 10138 - Issue #11268: Prevent Mac OS X Installer failure if Documentation 10139 package had previously been installed. 10140 10141 - Issue #11495: OSF support is eliminated. It was deprecated in Python 3.2. 10142 10143 IDLE 10144 ---- 10145 10146 - Issue #14409: IDLE now properly executes commands in the Shell window 10147 when it cannot read the normal config files on startup and 10148 has to use the built-in default key bindings. 10149 There was previously a bug in one of the defaults. 10150 10151 - IDLE can be launched as python -m idlelib 10152 10153 - Issue #3573: IDLE hangs when passing invalid command line args 10154 (directory(ies) instead of file(s)) (Patch by Guilherme Polo) 10155 10156 - Issue #14200: IDLE shell crash on printing non-BMP unicode character. 10157 10158 - Issue #5219: Prevent event handler cascade in IDLE. 10159 10160 - Issue #964437: Make IDLE help window non-modal. 10161 Patch by Guilherme Polo and Roger Serwy. 10162 10163 - Issue #13933: IDLE auto-complete did not work with some imported 10164 module, like hashlib. (Patch by Roger Serwy) 10165 10166 - Issue #13506: Add '' to path for IDLE Shell when started and restarted with Restart Shell. 10167 Original patches by Marco Scataglini and Roger Serwy. 10168 10169 - Issue #4625: If IDLE cannot write to its recent file or breakpoint files, 10170 display a message popup and continue rather than crash. Original patch by 10171 Roger Serwy. 10172 10173 - Issue #8641: Update IDLE 3 syntax coloring to recognize b".." and not u"..". 10174 Patch by Tal Einat. 10175 10176 - Issue #13296: Fix IDLE to clear compile __future__ flags on shell restart. 10177 (Patch by Roger Serwy) 10178 10179 - Issue #9871: Prevent IDLE 3 crash when given byte stings 10180 with invalid hex escape sequences, like b'\x0'. 10181 (Original patch by Claudiu Popa.) 10182 10183 - Issue #12636: IDLE reads the coding cookie when executing a Python script. 10184 10185 - Issue #12540: Prevent zombie IDLE processes on Windows due to changes 10186 in os.kill(). 10187 10188 - Issue #12590: IDLE editor window now always displays the first line 10189 when opening a long file. With Tk 8.5, the first line was hidden. 10190 10191 - Issue #11088: don't crash when using F5 to run a script in IDLE on MacOSX 10192 with Tk 8.5. 10193 10194 - Issue #1028: Tk returns invalid Unicode null in %A: UnicodeDecodeError. 10195 With Tk < 8.5 _tkinter.c:PythonCmd() raised UnicodeDecodeError, caused 10196 IDLE to exit. Converted to valid Unicode null in PythonCmd(). 10197 10198 - Issue #11718: IDLE's open module dialog couldn't find the __init__.py 10199 file in a package. 10200 10201 Tools/Demos 10202 ----------- 10203 10204 - Issue #14053: patchcheck.py ("make patchcheck") now works with MQ patches. 10205 Patch by Francisco Martín Brugué. 10206 10207 - Issue #13930: 2to3 is now able to write its converted output files to another 10208 directory tree as well as copying unchanged files and altering the file 10209 suffix. See its new -o, -W and --add-suffix options. This makes it more 10210 useful in many automated code translation workflows. 10211 10212 - Issue #13628: python-gdb.py is now able to retrieve more frames in the Python 10213 traceback if Python is optimized. 10214 10215 - Issue #11996: libpython (gdb), replace "py-bt" command by "py-bt-full" and 10216 add a smarter "py-bt" command printing a classic Python traceback. 10217 10218 - Issue #11179: Make ccbench work under Python 3.1 and 2.7 again. 10219 10220 - Issue #10639: reindent.py no longer converts newlines and will raise 10221 an error if attempting to convert a file with mixed newlines. 10222 "--newline" option added to specify new line character. 10223 10224 Extension Modules 10225 ----------------- 10226 10227 - Issue #16847: Fixed improper use of _PyUnicode_CheckConsistency() in 10228 non-pydebug builds. Several extension modules now compile cleanly when 10229 assert()s are enabled in standard builds (-DDEBUG flag). 10230 10231 - Issue #13840: The error message produced by ctypes.create_string_buffer 10232 when given a Unicode string has been fixed. 10233 10234 - Issue #9975: socket: Fix incorrect use of flowinfo and scope_id. Patch by 10235 Vilmos Nebehaj. 10236 10237 - Issue #7777: socket: Add Reliable Datagram Sockets (PF_RDS) support. 10238 10239 - Issue #13159: FileIO and BZ2Compressor/BZ2Decompressor now use a linear-time 10240 buffer growth strategy instead of a quadratic-time one. 10241 10242 - Issue #10141: socket: Add SocketCAN (PF_CAN) support. Initial patch by 10243 Matthias Fuchs, updated by Tiago Gonçalves. 10244 10245 - Issue #13070: Fix a crash when a TextIOWrapper caught in a reference cycle 10246 would be finalized after the reference to its underlying BufferedRWPair's 10247 writer got cleared by the GC. 10248 10249 - Issue #12881: ctypes: Fix segfault with large structure field names. 10250 10251 - Issue #13058: ossaudiodev: fix a file descriptor leak on error. Patch by 10252 Thomas Jarosch. 10253 10254 - Issue #13013: ctypes: Fix a reference leak in PyCArrayType_from_ctype. 10255 Thanks to Suman Saha for finding the bug and providing a patch. 10256 10257 - Issue #13022: Fix: _multiprocessing.recvfd() doesn't check that 10258 file descriptor was actually received. 10259 10260 - Issue #1172711: Add 'long long' support to the array module. 10261 Initial patch by Oren Tirosh and Hirokazu Yamamoto. 10262 10263 - Issue #12483: ctypes: Fix a crash when the destruction of a callback 10264 object triggers the garbage collector. 10265 10266 - Issue #12950: Fix passing file descriptors in multiprocessing, under 10267 OpenIndiana/Illumos. 10268 10269 - Issue #12764: Fix a crash in ctypes when the name of a Structure field is not 10270 a string. 10271 10272 - Issue #11241: subclasses of ctypes.Array can now be subclassed. 10273 10274 - Issue #9651: Fix a crash when ctypes.create_string_buffer(0) was passed to 10275 some functions like file.write(). 10276 10277 - Issue #10309: Define _GNU_SOURCE so that mremap() gets the proper 10278 signature. Without this, architectures where sizeof void* != sizeof int are 10279 broken. Patch given by Hallvard B Furuseth. 10280 10281 - Issue #12051: Fix segfault in json.dumps() while encoding highly-nested 10282 objects using the C accelerations. 10283 10284 - Issue #12017: Fix segfault in json.loads() while decoding highly-nested 10285 objects using the C accelerations. 10286 10287 - Issue #1838: Prevent segfault in ctypes, when _as_parameter_ on a class is set 10288 to an instance of the class. 10289 10290 Tests 10291 ----- 10292 10293 - Issue #13125: Silence spurious test_lib2to3 output when in non-verbose mode. 10294 Patch by Mikhail Novikov. 10295 10296 - Issue #13447: Add a test file to host regression tests for bugs in the 10297 scripts found in the Tools directory. 10298 10299 - Issue #10881: Fix test_site failure with OS X framework builds. 10300 10301 - Issue #13901: Prevent test_distutils failures on OS X with --enable-shared. 10302 10303 - Issue #13862: Fix spurious failure in test_zlib due to runtime/compile time 10304 minor versions not matching. 10305 10306 - Issue #12804: Fix test_socket and test_urllib2net failures when running tests 10307 on a system without internet access. 10308 10309 - Issue #13726: Fix the ambiguous -S flag in regrtest. It is -o/--slow for slow 10310 tests. 10311 10312 - Issue #11659: Fix ResourceWarning in test_subprocess introduced by #11459. 10313 Patch by Ben Hayden. 10314 10315 - Issue #11577: fix ResourceWarning triggered by improved binhex test coverage 10316 10317 - Issue #11509: Significantly increase test coverage of fileinput. 10318 Patch by Denver Coneybeare at PyCon 2011 Sprints. 10319 10320 - Issue #11689: Fix a variable scoping error in an sqlite3 test 10321 10322 - Issue #13786: Remove unimplemented 'trace' long option from regrtest.py. 10323 10324 - Issue #13725: Fix regrtest to recognize the documented -d flag. 10325 Patch by Erno Tukia. 10326 10327 - Issue #13304: Skip test case if user site-packages disabled (-s or 10328 PYTHONNOUSERSITE). (Patch by Carl Meyer) 10329 10330 - Issue #5661: Add a test for ECONNRESET/EPIPE handling to test_asyncore. Patch 10331 by Xavier de Gaye. 10332 10333 - Issue #13218: Fix test_ssl failures on Debian/Ubuntu. 10334 10335 - Re-enable lib2to3's test_parser.py tests, though with an expected failure 10336 (see issue 13125). 10337 10338 - Issue #12656: Add tests for IPv6 and Unix sockets to test_asyncore. 10339 10340 - Issue #6484: Add unit tests for mailcap module (patch by Gregory Nofi) 10341 10342 - Issue #11651: Improve the Makefile test targets to run more of the test suite 10343 more quickly. The --multiprocess option is now enabled by default, reducing 10344 the amount of time needed to run the tests. "make test" and "make quicktest" 10345 now include some resource-intensive tests, but no longer run the test suite 10346 twice to check for bugs in .pyc generation. Tools/scripts/run_test.py provides 10347 an easy platform-independent way to run test suite with sensible defaults. 10348 10349 - Issue #12331: The test suite for the packaging module can now run from an 10350 installed Python. 10351 10352 - Issue #12331: The test suite for lib2to3 can now run from an installed 10353 Python. 10354 10355 - Issue #12626: In regrtest, allow filtering tests using a glob filter 10356 with the ``-m`` (or ``--match``) option. This works with all test cases 10357 using the unittest module. This is useful with long test suites 10358 such as test_io or test_subprocess. 10359 10360 - Issue #12624: It is now possible to fail after the first failure when 10361 running in verbose mode (``-v`` or ``-W``), by using the ``--failfast`` 10362 (or ``-G``) option to regrtest. This is useful with long test suites 10363 such as test_io or test_subprocess. 10364 10365 - Issue #12587: Correct faulty test file and reference in test_tokenize. 10366 (Patch by Robert Xiao) 10367 10368 - Issue #12573: Add resource checks for dangling Thread and Process objects. 10369 10370 - Issue #12549: Correct test_platform to not fail when OS X returns 'x86_64' 10371 as the processor type on some Mac systems. 10372 10373 - Skip network tests when getaddrinfo() returns EAI_AGAIN, meaning a temporary 10374 failure in name resolution. 10375 10376 - Issue #11812: Solve transient socket failure to connect to 'localhost' 10377 in test_telnetlib.py. 10378 10379 - Solved a potential deadlock in test_telnetlib.py. Related to issue #11812. 10380 10381 - Avoid failing in test_robotparser when mueblesmoraleda.com is flaky and 10382 an overzealous DNS service (e.g. OpenDNS) redirects to a placeholder 10383 Web site. 10384 10385 - Avoid failing in test_urllibnet.test_bad_address when some overzealous 10386 DNS service (e.g. OpenDNS) resolves a non-existent domain name. The test 10387 is now skipped instead. 10388 10389 - Issue #12440: When testing whether some bits in SSLContext.options can be 10390 reset, check the version of the OpenSSL headers Python was compiled against, 10391 rather than the runtime version of the OpenSSL library. 10392 10393 - Issue #11512: Add a test suite for the cgitb module. Patch by Robbie Clemons. 10394 10395 - Issue #12497: Install test/data to prevent failures of the various codecmaps 10396 tests. 10397 10398 - Issue #12496: Install test/capath directory to prevent test_connect_capath 10399 testcase failure in test_ssl. 10400 10401 - Issue #12469: Run wakeup and pending signal tests in a subprocess to run the 10402 test in a fresh process with only one thread and to not change signal 10403 handling of the parent process. 10404 10405 - Issue #8716: Avoid crashes caused by Aqua Tk on OSX when attempting to run 10406 test_tk or test_ttk_guionly under a username that is not currently logged 10407 in to the console windowserver (as may be the case under buildbot or ssh). 10408 10409 - Issue #12407: Explicitly skip test_capi.EmbeddingTest under Windows. 10410 10411 - Issue #12400: regrtest -W doesn't rerun the tests twice anymore, but captures 10412 the output and displays it on failure instead. regrtest -v doesn't print the 10413 error twice anymore if there is only one error. 10414 10415 - Issue #12141: Install copies of template C module file so that 10416 test_build_ext of test_distutils and test_command_build_ext of 10417 test_packaging are no longer silently skipped when 10418 run outside of a build directory. 10419 10420 - Issue #8746: Add additional tests for os.chflags() and os.lchflags(). 10421 Patch by Garrett Cooper. 10422 10423 - Issue #10736: Fix test_ttk test_widgets failures with Cocoa Tk 8.5.9 10424 2.8 + on Mac OS X. (Patch by Ronald Oussoren) 10425 10426 - Issue #12057: Add tests for ISO 2022 codecs (iso2022_jp, iso2022_jp_2, 10427 iso2022_kr). 10428 10429 - Issue #12096: Fix a race condition in test_threading.test_waitfor(). Patch 10430 written by Charles-François Natali. 10431 10432 - Issue #11614: import __hello__ prints "Hello World!". Patch written by 10433 Andreas Stührk. 10434 10435 - Issue #5723: Improve json tests to be executed with and without accelerations. 10436 10437 - Issue #12041: Make test_wait3 more robust. 10438 10439 - Issue #11873: Change regex in test_compileall to fix occasional failures when 10440 the randomly generated temporary path happened to match the regex. 10441 10442 - Issue #11958: Fix FTP tests for IPv6, bind to "::1" instead of "localhost". 10443 Patch written by Charles-Francois Natali. 10444 10445 - Issue #8407, #11859: Fix tests of test_io using threads and an alarm: use 10446 pthread_sigmask() to ensure that the SIGALRM signal is received by the main 10447 thread. 10448 10449 - Issue #11811: Factor out detection of IPv6 support on the current host 10450 and make it available as ``test.support.IPV6_ENABLED``. Patch by 10451 Charles-François Natali. 10452 10453 - Issue #10914: Add a minimal embedding test to test_capi. 10454 10455 - Issue #11223: Skip test_lock_acquire_interruption() and 10456 test_rlock_acquire_interruption() of test_threadsignals if a thread lock is 10457 implemented using a POSIX mutex and a POSIX condition variable. A POSIX 10458 condition variable cannot be interrupted by a signal (e.g. on Linux, the 10459 futex system call is restarted). 10460 10461 - Issue #11790: Fix sporadic failures in test_multiprocessing.WithProcessesTestCondition. 10462 10463 - Fix possible "file already exists" error when running the tests in parallel. 10464 10465 - Issue #11719: Fix message about unexpected test_msilib skip on non-Windows 10466 platforms. Patch by Nadeem Vawda. 10467 10468 - Issue #11727: Add a --timeout option to regrtest: if a test takes more than 10469 TIMEOUT seconds, dumps the traceback of all threads and exits. 10470 10471 - Issue #11653: fix -W with -j in regrtest. 10472 10473 - The email test suite now lives in the Lib/test/test_email package. The test 10474 harness code has also been modernized to allow use of new unittest features. 10475 10476 - regrtest now discovers test packages as well as test modules. 10477 10478 - Issue #11577: improve test coverage of binhex.py. Patch by Arkady Koplyarov. 10479 10480 - New test_crashers added to exercise the scripts in the Lib/test/crashers 10481 directory and confirm they fail as expected 10482 10483 - Issue #11578: added test for the timeit module. Patch by Michael Henry. 10484 10485 - Issue #11503: improve test coverage of posixpath.py. Patch by Evan Dandrea. 10486 10487 - Issue #11505: improves test coverage of string.py, increases granularity of 10488 string.Formatter tests. Initial patch by Alicia Arlen. 10489 10490 - Issue #11548: Improve test coverage of the shutil module. Patch by 10491 Evan Dandrea. 10492 10493 - Issue #11554: Reactivated test_email_codecs. 10494 10495 - Issue #11505: improves test coverage of string.py. Patch by Alicia 10496 Arlen 10497 10498 - Issue #11490: test_subprocess.test_leaking_fds_on_error no longer gives a 10499 false positive if the last directory in the path is inaccessible. 10500 10501 - Issue #11223: Fix test_threadsignals to fail, not hang, when the 10502 non-semaphore implementation of locks is used under POSIX. 10503 10504 - Issue #10911: Add tests on CGI with non-ASCII characters. Patch written by 10505 Pierre Quentel. 10506 10507 - Issue #9931: Fix hangs in GUI tests under Windows in certain conditions. 10508 Patch by Hirokazu Yamamoto. 10509 10510 - Issue #10512: Properly close sockets under test.test_cgi. 10511 10512 - Issue #10992: Make tests pass under coverage. 10513 10514 - Issue #10826: Prevent sporadic failure in test_subprocess on Solaris due 10515 to open door files. 10516 10517 - Issue #10990: Prevent tests from clobbering a set trace function. 10518 10519 C-API 10520 ----- 10521 10522 - Issue #13452: PyUnicode_EncodeDecimal() doesn't support error handlers 10523 different than "strict" anymore. The caller was unable to compute the 10524 size of the output buffer: it depends on the error handler. 10525 10526 - Issue #13560: Add PyUnicode_DecodeLocale(), PyUnicode_DecodeLocaleAndSize() 10527 and PyUnicode_EncodeLocale() functions to the C API to decode/encode from/to 10528 the current locale encoding. 10529 10530 - Issue #10831: PyUnicode_FromFormat() supports %li, %lli and %zi formats. 10531 10532 - Issue #11246: Fix PyUnicode_FromFormat("%V") to decode the byte string from 10533 UTF-8 (with replace error handler) instead of ISO-8859-1 (in strict mode). 10534 Patch written by Ray Allen. 10535 10536 - Issue #10830: Fix PyUnicode_FromFormatV("%c") for non-BMP characters on 10537 narrow build. 10538 10539 - Add PyObject_GenericGetDict and PyObject_GeneriSetDict. They are generic 10540 implementations for the getter and setter of a ``__dict__`` descriptor of C 10541 types. 10542 10543 - Issue #13727: Add 3 macros to access PyDateTime_Delta members: 10544 PyDateTime_DELTA_GET_DAYS, PyDateTime_DELTA_GET_SECONDS, 10545 PyDateTime_DELTA_GET_MICROSECONDS. 10546 10547 - Issue #10542: Add 4 macros to work with surrogates: Py_UNICODE_IS_SURROGATE, 10548 Py_UNICODE_IS_HIGH_SURROGATE, Py_UNICODE_IS_LOW_SURROGATE, 10549 Py_UNICODE_JOIN_SURROGATES. 10550 10551 - Issue #12724: Add Py_RETURN_NOTIMPLEMENTED macro for returning NotImplemented. 10552 10553 - PY_PATCHLEVEL_REVISION has been removed, since it's meaningless with 10554 Mercurial. 10555 10556 - Issue #12173: The first argument of PyImport_ImportModuleLevel is now `const 10557 char *` instead of `char *`. 10558 10559 - Issue #12380: PyArg_ParseTuple now accepts a bytearray for the 'c' format. 10560 10561 Documentation 10562 ------------- 10563 10564 - Issue #13989: Document that GzipFile does not support text mode, and give a 10565 more helpful error message when opened with an invalid mode string. 10566 10567 - Issue #13921: Undocument and clean up sqlite3.OptimizedUnicode, 10568 which is obsolete in Python 3.x. It's now aliased to str for 10569 backwards compatibility. 10570 10571 - Issue #12102: Document that buffered files must be flushed before being used 10572 with mmap. Patch by Steffen Daode Nurpmeso. 10573 10574 - Issue #8982: Improve the documentation for the argparse Namespace object. 10575 10576 - Issue #9343: Document that argparse parent parsers must be configured before 10577 their children. 10578 10579 - Issue #13498: Clarify docs of os.makedirs()'s exist_ok argument. Done with 10580 great native-speaker help from R. David Murray. 10581 10582 - Issues #13491 and #13995: Fix many errors in sqlite3 documentation. 10583 Initial patch for #13491 by Johannes Vogel. 10584 10585 - Issue #13402: Document absoluteness of sys.executable. 10586 10587 - Issue #13883: PYTHONCASEOK also works on OS X. 10588 10589 - Issue #9021: Add an introduction to the copy module documentation. 10590 10591 - Issue #6005: Examples in the socket library documentation use sendall, where 10592 relevant, instead send method. 10593 10594 - Issue #12798: Updated the mimetypes documentation. 10595 10596 - Issue #12949: Document the kwonlyargcount argument for the PyCode_New 10597 C API function. 10598 10599 - Issue #13513: Fix io.IOBase documentation to correctly link to the 10600 io.IOBase.readline method instead of the readline module. 10601 10602 - Issue #13237: Reorganise subprocess documentation to emphasise convenience 10603 functions and the most commonly needed arguments to Popen. 10604 10605 - Issue #13141: Demonstrate recommended style for socketserver examples. 10606 10607 - Issue #11818: Fix tempfile examples for Python 3. 10608 10609 10610 What's New in Python 3.2? 10611 ========================= 10612 10613 *Release date: 20-Feb-2011* 10614 10615 Core and Builtins 10616 ----------------- 10617 10618 - Issue #11249: Fix potential crashes when using the limited API. 10619 10620 Build 10621 ----- 10622 10623 - Issue #11222: Fix non-framework shared library build on Mac OS X. 10624 10625 - Issue #11184: Fix large-file support on AIX. 10626 10627 - Issue #941346: Fix broken shared library build on AIX. 10628 10629 Documentation 10630 ------------- 10631 10632 - Issue #10709: Add updated AIX notes in Misc/README.AIX. 10633 10634 10635 What's New in Python 3.2 Release Candidate 3? 10636 ============================================= 10637 10638 *Release date: 13-Feb-2011* 10639 10640 Core and Builtins 10641 ----------------- 10642 10643 - Issue #11134: Add missing fields to typeslots.h. 10644 10645 - Issue #11135: Remove redundant doc field from PyType_Spec. 10646 10647 - Issue #11067: Add PyType_GetFlags, to support PyUnicode_Check in the limited 10648 ABI. 10649 10650 - Issue #11118: Fix bogus export of None in python3.dll. 10651 10652 Library 10653 ------- 10654 10655 - Issue #11116: any error during addition of a message to a mailbox now causes a 10656 rollback, instead of leaving the mailbox partially modified. 10657 10658 - Issue #11132: Fix passing of "optimize" parameter when recursing in 10659 compileall.compile_dir(). 10660 10661 - Issue #11110: Fix a potential decref of a NULL in sqlite3. 10662 10663 - Issue #8275: Fix passing of callback arguments with ctypes under Win64. Patch 10664 by Stan Mihai. 10665 10666 Build 10667 ----- 10668 10669 - Issue #11079: The /Applications/Python x.x folder created by the Mac OS X 10670 installers now includes a link to the installed documentation and no longer 10671 includes an Extras directory. The Tools directory is now installed in the 10672 framework under share/doc. 10673 10674 - Issue #11121: Fix building with --enable-shared. 10675 10676 Tests 10677 ----- 10678 10679 - Issue #10971: test_zipimport_support is once again compatible with the refleak 10680 hunter feature of test.regrtest. 10681 10682 10683 What's New in Python 3.2 Release Candidate 2? 10684 ============================================= 10685 10686 *Release date: 30-Jan-2011* 10687 10688 Core and Builtins 10689 ----------------- 10690 10691 - Issue #10451: memoryview objects could allow mutating a readable buffer. 10692 Initial patch by Ross Lagerwall. 10693 10694 Library 10695 ------- 10696 10697 - Issue #9124: mailbox now accepts binary input and reads and writes mailbox 10698 files in binary mode, using the email package's binary support to parse 10699 arbitrary email messages. StringIO and text file input is deprecated, 10700 and string input fails early if non-ASCII characters are used, where 10701 previously it would fail when the email was processed in a later step. 10702 10703 - Issue #10845: Mitigate the incompatibility between the multiprocessing 10704 module on Windows and the use of package, zipfile or directory execution 10705 by special casing main modules that actually *are* called __main__.py. 10706 10707 - Issue #11045: Protect logging call against None argument. 10708 10709 - Issue #11052: Correct IDLE menu accelerators on Mac OS X for Save 10710 commands. 10711 10712 - Issue #11053: Fix IDLE "Syntax Error" windows to behave as in 2.x, 10713 preventing a confusing hung appearance on OS X with the windows 10714 obscured. 10715 10716 - Issue #10940: Workaround an IDLE hang on Mac OS X 10.6 when using the 10717 menu accelerators for Open Module, Go to Line, and New Indent Width. 10718 The accelerators still work but no longer appear in the menu items. 10719 10720 - Issue #10989: Fix a crash on SSLContext.load_verify_locations(None, True). 10721 10722 - Issue #11020: Command-line pyclbr was broken because of missing 2-to-3 10723 conversion. 10724 10725 - Issue #11019: Fixed BytesGenerator so that it correctly handles a Message 10726 with a None body. 10727 10728 - Issue #11014: Make 'filter' argument in tarfile.Tarfile.add() into a 10729 keyword-only argument. The preceding positional argument was deprecated, 10730 so it made no sense to add filter as a positional argument. 10731 10732 - Issue #11004: Repaired edge case in deque.count(). 10733 10734 - Issue #10974: IDLE no longer crashes if its recent files list includes files 10735 with non-ASCII characters in their path names. 10736 10737 - Have hashlib.algorithms_available and hashlib.algorithms_guaranteed both 10738 return sets instead of one returning a tuple and the other a frozenset. 10739 10740 - Issue #10987: Fix the recursion limit handling in the _pickle module. 10741 10742 - Issue #10983: Fix several bugs making tunnel requests in http.client. 10743 10744 - Issue #10955: zipimport uses ASCII encoding instead of cp437 to decode 10745 filenames, at bootstrap, if the codec registry is not ready yet. It is still 10746 possible to have non-ASCII filenames using the Unicode flag (UTF-8 encoding) 10747 for all file entries in the ZIP file. 10748 10749 - Issue #10949: Improved robustness of rotating file handlers. 10750 10751 - Issue #10955: Fix a potential crash when trying to mmap() a file past its 10752 length. Initial patch by Ross Lagerwall. 10753 10754 - Issue #10898: Allow compiling the posix module when the C library defines 10755 a symbol named FSTAT. 10756 10757 - Issue #10980: the HTTP server now encodes headers with iso-8859-1 (latin1) 10758 encoding. This is the preferred encoding of PEP 3333 and the base encoding 10759 of HTTP 1.1. 10760 10761 - To match the behaviour of HTTP server, the HTTP client library now also 10762 encodes headers with iso-8859-1 (latin1) encoding. It was already doing 10763 that for incoming headers which makes this behaviour now consistent in 10764 both incoming and outgoing direction. 10765 10766 - Issue #9509: argparse now properly handles IOErrors raised by 10767 argparse.FileType. 10768 10769 - Issue #10961: The new pydoc server now better handles exceptions raised 10770 during request handling. 10771 10772 - Issue #10680: Fix mutually exclusive arguments for argument groups in 10773 argparse. 10774 10775 Build 10776 ----- 10777 10778 - Issue #11054: Allow Mac OS X installer builds to again work on 10.5 with 10779 the system-provided Python. 10780 10781 10782 What's New in Python 3.2 Release Candidate 1 10783 ============================================ 10784 10785 *Release date: 16-Jan-2011* 10786 10787 Core and Builtins 10788 ----------------- 10789 10790 - Issue #10889: range indexing and slicing now works correctly on ranges with 10791 a length that exceeds sys.maxsize. 10792 10793 - Issue #10892: Don't segfault when trying to delete __abstractmethods__ from a 10794 class. 10795 10796 - Issue #8020: Avoid a crash where the small objects allocator would read 10797 non-Python managed memory while it is being modified by another thread. Patch 10798 by Matt Bandy. 10799 10800 - Issue #10841: On Windows, set the binary mode on stdin, stdout, stderr and all 10801 io.FileIO objects (to not translate newlines, \r\n <=> \n). The Python parser 10802 translates newlines (\r\n => \n). 10803 10804 - Remove buffer API from stable ABI for now, see #10181. 10805 10806 - Issue #8651: PyArg_Parse*() functions raise an OverflowError if the file 10807 doesn't have PY_SSIZE_T_CLEAN define and the size doesn't fit in an int 10808 (length bigger than 2^31-1 bytes). 10809 10810 - Issue #9015, #9611: FileIO.readinto(), FileIO.write(), os.write() and 10811 stdprinter.write() clamp the length to INT_MAX on Windows. 10812 10813 - Issue #8278: On Windows and with a NTFS filesystem, os.stat() and os.utime() 10814 can now handle dates after 2038. 10815 10816 - Issue #10780: PyErr_SetFromWindowsErrWithFilename() and 10817 PyErr_SetExcFromWindowsErrWithFilename() decode the filename from the 10818 filesystem encoding instead of UTF-8. 10819 10820 - Issue #10779: PyErr_WarnExplicit() decodes the filename from the filesystem 10821 encoding instead of UTF-8. 10822 10823 - Add sys.flags attribute for the new -q command-line option. 10824 10825 - Issue #11506: Trying to assign to a bytes literal should result in a 10826 SyntaxError. 10827 10828 Library 10829 ------- 10830 10831 - Issue #10916: mmap should not segfault when a file is mapped using 0 as length 10832 and a non-zero offset, and an attempt to read past the end of file is made 10833 (IndexError is raised instead). Patch by Ross Lagerwall. 10834 10835 - Issue #10154, #10090: change the normalization of UTF-8 to "UTF-8" instead 10836 of "UTF8" in the locale module as the latter is not supported MacOSX and OpenBSD. 10837 10838 - Issue #10907: Warn OS X 10.6 IDLE users to use ActiveState Tcl/Tk 8.5, rather 10839 than the currently problematic Apple-supplied one, when running with the 10840 64-/32-bit installer variant. 10841 10842 - Issue #4953: cgi.FieldStorage and cgi.parse() parse the request as bytes, not 10843 as unicode, and accept binary files. Add encoding and errors attributes to 10844 cgi.FieldStorage. Patch written by Pierre Quentel (with many inputs by Glenn 10845 Linderman). 10846 10847 - Add encoding and errors arguments to urllib.parse_qs() and urllib.parse_qsl(). 10848 10849 - Issue #10899: No function type annotations in the standard library. Removed 10850 function type annotations from _pyio.py. 10851 10852 - Issue #10875: Update Regular Expression HOWTO; patch by 'SilentGhost'. 10853 10854 - Issue #10872: The repr() of TextIOWrapper objects now includes the mode 10855 if available. 10856 10857 - Issue #10869: Fixed bug where ast.increment_lineno modified the root node 10858 twice. 10859 10860 - Issue #5871: email.header.Header.encode now raises an error if any 10861 continuation line in the formatted value has no leading white space and looks 10862 like a header. Since Generator uses Header to format all headers, this check 10863 is made for all headers in any serialized message at serialization time. This 10864 provides protection against header injection attacks. 10865 10866 - Issue #10859: Make ``contextlib.GeneratorContextManager`` officially 10867 private by renaming it to ``_GeneratorContextManager``. 10868 10869 - Issue #10042: Fixed the total_ordering decorator to handle cross-type 10870 comparisons that could lead to infinite recursion. 10871 10872 - Issue #10686: the email package now :rfc:`2047`\ -encodes headers with 10873 non-ASCII bytes (parsed by a BytesParser) when doing conversion to 7bit-clean 10874 presentation, instead of replacing them with ?s. 10875 10876 - email.header.Header was incorrectly encoding folding whitespace when 10877 rfc2047-encoding header values with embedded newlines, leaving them without 10878 folding whitespace. It now uses the continuation_ws, as it does for 10879 continuation lines that it creates itself. 10880 10881 - Issue #1777412, #10827: Changed the rules for 2-digit years. The 10882 time.asctime(), time.ctime() and time.strftime() functions will now format 10883 any year when ``time.accept2dyear`` is False and will accept years >= 1000 10884 otherwise. ``time.mktime`` and ``time.strftime`` now accept full range 10885 supported by the OS. With Visual Studio or on Solaris, the year is limited to 10886 the range [1; 9999]. Conversion of 2-digit years to 4-digit is deprecated. 10887 10888 - Issue #7858: Raise an error properly when os.utime() fails under Windows 10889 on an existing file. 10890 10891 - Issue #3839: wsgiref should not override a Content-Length header set by 10892 the application. Initial patch by Clovis Fabricio. 10893 10894 - Issue #10492: bdb.Bdb.run() only traces the execution of the code, not the 10895 compilation (if the input is a string). 10896 10897 - Issue #7995: When calling accept() on a socket with a timeout, the returned 10898 socket is now always blocking, regardless of the operating system. 10899 10900 - Issue #10756: atexit normalizes the exception before displaying it. Patch by 10901 Andreas Stührk. 10902 10903 - Issue #10790: email.header.Header.append's charset logic now works correctly 10904 for charsets whose output codec is different from its input codec. 10905 10906 - Issue #10819: SocketIO.name property returns -1 when its closed, instead of 10907 raising a ValueError, to fix repr(). 10908 10909 - Issue #8650: zlib.compress() and zlib.decompress() raise an OverflowError if 10910 the input buffer length doesn't fit into an unsigned int (length bigger than 10911 2^32-1 bytes). 10912 10913 - Issue #6643: Reinitialize locks held within the threading module after fork to 10914 avoid a potential rare deadlock or crash on some platforms. 10915 10916 - Issue #10806, issue #9905: Fix subprocess pipes when some of the standard file 10917 descriptors (0, 1, 2) are closed in the parent process. Initial patch by Ross 10918 Lagerwall. 10919 10920 - `unittest.TestCase` can be instantiated without a method name; for simpler 10921 exploration from the interactive interpreter. 10922 10923 - Issue #10798: Reject supporting concurrent.futures if the system has too 10924 few POSIX semaphores. 10925 10926 - Issue #10807: Remove base64, bz2, hex, quopri, rot13, uu and zlib codecs from 10927 the codec aliases. They are still accessible via codecs.lookup(). 10928 10929 - Issue #10801: In zipfile, support different encodings for the header and the 10930 filenames. 10931 10932 - Issue #6285: IDLE no longer crashes on missing help file; patch by Scott 10933 David Daniels. 10934 10935 - Fix collections.OrderedDict.setdefault() so that it works in subclasses that 10936 define __missing__(). 10937 10938 - Issue #10786: unittest.TextTestRunner default stream no longer bound at import 10939 time. `sys.stderr` now looked up at instantiation time. Fix contributed by 10940 Mark Roddy. 10941 10942 - Issue #10753: Characters ';', '=' and ',' in the PATH_INFO environment variable 10943 won't be quoted when the URI is constructed by the wsgiref.util's request_uri 10944 method. According to RFC 3986, these characters can be a part of params in 10945 PATH component of URI and need not be quoted. 10946 10947 - Issue #10738: Fix webbrowser.Opera.raise_opts. 10948 10949 - Issue #9824: SimpleCookie now encodes , and ; in values to cater to how 10950 browsers actually parse cookies. 10951 10952 - Issue #9333: os.symlink now available regardless of user privileges. The 10953 function now raises OSError on Windows >=6.0 when the user is unable to create 10954 symbolic links. XP and 2003 still raise NotImplementedError. 10955 10956 - Issue #10783: struct.pack() no longer implicitly encodes unicode to UTF-8. 10957 10958 - Issue #10730: Add SVG mime types to mimetypes module. 10959 10960 - Issue #10768: Make the Tkinter ScrolledText widget work again. 10961 10962 - Issue #10777: Fix "dictionary changed size during iteration" bug in 10963 ElementTree register_namespace(). 10964 10965 - Issue #10626: test_logging now preserves logger disabled states. 10966 10967 - Issue #10774: test_logging now removes temp files created during tests. 10968 10969 - Issue #5258/#10642: if site.py encounters a .pth file that generates an error, 10970 it now prints the filename, line number, and traceback to stderr and skips 10971 the rest of that individual file, instead of stopping processing entirely. 10972 10973 - Issue #10763: subprocess.communicate() closes stdout and stderr if both are 10974 pipes (bug specific to Windows). 10975 10976 - Issue #1693546: fix email.message RFC 2231 parameter encoding to be in better 10977 compliance (no "s around encoded values). 10978 10979 - Improved the diff message in the unittest module's assertCountEqual(). 10980 10981 - Issue #1155362: email.utils.parsedate_tz now handles a missing space before 10982 the '-' of a timezone field as well as before a '+'. 10983 10984 - Issue #4871: The zipfile module now gives a more useful error message if 10985 an attempt is made to use a string to specify the archive password. 10986 10987 - Issue #10750: The ``raw`` attribute of buffered IO objects is now read-only. 10988 10989 - Deprecated assertDictContainsSubset() in the unittest module. 10990 10991 C-API 10992 ----- 10993 10994 - PyObject_CallMethod now passes along any underlying AttributeError from 10995 PyObject_GetAttr, instead of replacing it with something less informative 10996 10997 - Issue #10913: Deprecate misleading functions PyEval_AcquireLock() and 10998 PyEval_ReleaseLock(). The thread-state aware APIs should be used instead. 10999 11000 - Issue #10333: Remove ancient GC API, which has been deprecated since Python 11001 2.2. 11002 11003 Build 11004 ----- 11005 11006 - Issue #10843: Update third-party library versions used in OS X 32-bit 11007 installer builds: bzip2 1.0.6, readline 6.1.2, SQLite 3.7.4 (with FTS3/FTS4 11008 and RTREE enabled), and ncursesw 5.5 (wide-char support enabled). 11009 11010 - Issue #10820: Fix OS X framework installs to support version-specific 11011 scripts (#10679). 11012 11013 - Issue #7716: Under Solaris, don't assume existence of /usr/xpg4/bin/grep in 11014 the configure script but use $GREP instead. Patch by Fabian Groffen. 11015 11016 - Issue #10475: Don't hardcode compilers for LDSHARED/LDCXXSHARED on NetBSD 11017 and DragonFly BSD. Patch by Nicolas Joly. 11018 11019 - Issue #10679: The "idle", "pydoc" and "2to3" scripts are now installed with 11020 a version-specific suffix on "make altinstall". 11021 11022 - Issue #10655: Fix the build on PowerPC on Linux with GCC when building with 11023 timestamp profiling (--with-tsc): the preprocessor test for the PowerPC 11024 support now looks for "__powerpc__" as well as "__ppc__": the latter seems to 11025 only be present on OS X; the former is the correct one for Linux with GCC. 11026 11027 - Issue #1099: Fix the build on MacOSX when building a framework with pydebug 11028 using GCC 4.0. 11029 11030 Tools/Demos 11031 ----------- 11032 11033 - Issue #10843: Install the Tools directory on OS X in the applications Extras 11034 (/Applications/Python 3.n/Extras/) where the Demo directory had previous been 11035 installed. 11036 11037 - Issue #7962: The Demo directory is gone. Most of the old and unmaintained 11038 demos have been removed, others integrated in documentation or a new 11039 Tools/demo subdirectory. 11040 11041 - Issue #10502: Addition of the unittestgui tool. Originally by Steve Purcell. 11042 Updated for test discovery by Mark Roddy and Python 3 compatibility by Brian 11043 Curtin. 11044 11045 Tests 11046 ----- 11047 11048 - Issue #11910: Fix test_heapq to skip the C tests when _heapq is missing. 11049 11050 - Fix test_startfile to wait for child process to terminate before finishing. 11051 11052 - Issue #10822: Fix test_posix:test_getgroups failure under Solaris. Patch 11053 by Ross Lagerwall. 11054 11055 - Make the --coverage flag work for test.regrtest. 11056 11057 - Issue #1677694: Refactor and improve test_timeout. Original patch by 11058 Björn Lindqvist. 11059 11060 - Issue #5485: Add tests for the UseForeignDTD method of expat parser objects. 11061 Patch by Jean-Paul Calderone and Sandro Tosi. 11062 11063 - Issue #6293: Have regrtest.py echo back sys.flags. This is done by default in 11064 whole runs and enabled selectively using ``--header`` when running an explicit 11065 list of tests. Original patch by Collin Winter. 11066 11067 11068 What's New in Python 3.2 Beta 2? 11069 ================================ 11070 11071 *Release date: 19-Dec-2010* 11072 11073 Core and Builtins 11074 ----------------- 11075 11076 - Issue #8844: Regular and recursive lock acquisitions can now be interrupted 11077 by signals on platforms using pthreads. Patch by Reid Kleckner. 11078 11079 - Issue #4236: PyModule_Create2 now checks the import machinery directly 11080 rather than the Py_IsInitialized flag, avoiding a Fatal Python 11081 error in certain circumstances when an import is done in __del__. 11082 11083 - Issue #5587: add a repr to dict_proxy objects. Patch by David Stanek and 11084 Daniel Urban. 11085 11086 Library 11087 ------- 11088 11089 - Issue #3243: Support iterable bodies in httplib. Patch Contributions by 11090 Xuanji Li and Chris AtLee. 11091 11092 - Issue #10611: SystemExit exception will no longer kill a unittest run. 11093 11094 - Issue #9857: It is now possible to skip a test in a setUp, tearDown or clean 11095 up function. 11096 11097 - Issue #10573: use actual/expected consistently in unittest methods. 11098 The order of the args of assertCountEqual is also changed. 11099 11100 - Issue #9286: email.utils.parseaddr no longer concatenates blank-separated 11101 words in the local part of email addresses, thereby preserving the input. 11102 11103 - Issue #6791: Limit header line length (to 65535 bytes) in http.client 11104 and http.server, to avoid denial of services from the other party. 11105 11106 - Issue #10404: Use ctl-button-1 on OSX for the context menu in Idle. 11107 11108 - Issue #9907: Fix tab handling on OSX when using editline by calling 11109 rl_initialize first, then setting our custom defaults, then reading .editrc. 11110 11111 - Issue #4188: Avoid creating dummy thread objects when logging operations 11112 from the threading module (with the internal verbose flag activated). 11113 11114 - Issue #10711: Remove HTTP 0.9 support from http.client. The ``strict`` 11115 parameter to HTTPConnection and friends is deprecated. 11116 11117 - Issue #9721: Fix the behavior of urljoin when the relative url starts with a 11118 ';' character. Patch by Wes Chow. 11119 11120 - Issue #10714: Limit length of incoming request in http.server to 65536 bytes 11121 for security reasons. Initial patch by Ross Lagerwall. 11122 11123 - Issue #9558: Fix distutils.command.build_ext with VS 8.0. 11124 11125 - Issue #10667: Fast path for collections.Counter(). 11126 11127 - Issue #10695: passing the port as a string value to telnetlib no longer 11128 causes debug mode to fail. 11129 11130 - Issue #1078919: add_header now automatically RFC2231 encodes parameters 11131 that contain non-ascii values. 11132 11133 - Issue #10188 (partial resolution): tempfile.TemporaryDirectory emits 11134 a warning on sys.stderr rather than throwing a misleading exception 11135 if cleanup fails due to nulling out of modules during shutdown. 11136 Also avoids an AttributeError when mkdtemp call fails and issues 11137 a ResourceWarning on implicit cleanup via __del__. 11138 11139 - Issue #10107: Warn about unsaved files in IDLE on OSX. 11140 11141 - Issue #7213: subprocess.Popen's default for close_fds has been changed. 11142 It is now True in most cases other than on Windows when input, output or 11143 error handles are provided. 11144 11145 - Issue #6559: subprocess.Popen has a new pass_fds parameter (actually 11146 added in 3.2beta1) to allow specifying a specific list of file descriptors 11147 to keep open in the child process. 11148 11149 - Issue #1731717: Fixed the problem where subprocess.wait() could cause an 11150 OSError exception when The OS had been told to ignore SIGCLD in our process 11151 or otherwise not wait for exiting child processes. 11152 11153 Tests 11154 ----- 11155 11156 - Issue #775964: test_grp now skips YP/NIS entries instead of failing when 11157 encountering them. 11158 11159 Tools/Demos 11160 ----------- 11161 11162 - Issue #6075: IDLE on Mac OS X now works with both Carbon AquaTk and 11163 Cocoa AquaTk. 11164 11165 - Issue #10710: ``Misc/setuid-prog.c`` is removed from the source tree. 11166 11167 - Issue #10706: Remove outdated script runtests.sh. Either ``make test`` 11168 or ``python -m test`` should be used instead. 11169 11170 Build 11171 ----- 11172 11173 - The Windows build now uses Tcl/Tk 8.5.9 and sqlite3 3.7.4. 11174 11175 - Issue #9234: argparse supports alias names for subparsers. 11176 11177 11178 What's New in Python 3.2 Beta 1? 11179 ================================ 11180 11181 *Release date: 05-Dec-2010* 11182 11183 Core and Builtins 11184 ----------------- 11185 11186 - Issue #10630: Return dict views from the dict proxy keys()/values()/items() 11187 methods. 11188 11189 - Issue #10596: Fix float.__mod__ to have the same behaviour as float.__divmod__ 11190 with respect to signed zeros. -4.0 % 4.0 should be 0.0, not -0.0. 11191 11192 - Issue #1772833: Add the -q command-line option to suppress copyright and 11193 version output in interactive mode. 11194 11195 - Provide an *optimize* parameter in the built-in compile() function. 11196 11197 - Fixed several corner case issues on Windows in os.stat/os.lstat related to 11198 reparse points. 11199 11200 - PEP 384 (Defining a Stable ABI) is implemented. 11201 11202 - Issue #2690: Range objects support negative indices and slicing. 11203 11204 - Issue #9915: Speed up sorting with a key. 11205 11206 - Issue #8685: Speed up set difference ``a - b`` when source set ``a`` is much 11207 larger than operand ``b``. Patch by Andrew Bennetts. 11208 11209 - Issue #10518: Bring back the callable() builtin. 11210 11211 - Issue #7094: Added alternate formatting (specified by '#') to ``__format__`` 11212 method of float, complex, and Decimal. This allows more precise control over 11213 when decimal points are displayed. 11214 11215 - Issue #10474: range.count() should return integers. 11216 11217 - Issue #1574217: isinstance now catches only AttributeError, rather than 11218 masking all errors. 11219 11220 Library 11221 ------- 11222 11223 - logging: added "handler of last resort". See http://bit.ly/last-resort-handler 11224 11225 - test.support: Added TestHandler and Matcher classes for better support of 11226 assertions about logging. 11227 11228 - Issue #4391: Use proper plural forms in argparse. 11229 11230 - Issue #10601: sys.displayhook uses 'backslashreplace' error handler on 11231 UnicodeEncodeError. 11232 11233 - Add the "display" and "undisplay" pdb commands. 11234 11235 - Issue #7245: Add a SIGINT handler in pdb that allows breaking a program again 11236 after a "continue" command. 11237 11238 - Add the "interact" pdb command. 11239 11240 - Issue #7905: Actually respect the keyencoding parameter to shelve.Shelf. 11241 11242 - Issue #1569291: Speed up array.repeat(). 11243 11244 - Provide an interface to set the optimization level of compilation in 11245 py_compile, compileall and zipfile.PyZipFile. 11246 11247 - Issue #7904: Changes to urllib.parse.urlsplit to handle schemes as defined by 11248 RFC3986. Anything before :// is considered a scheme and is followed by an 11249 authority (or netloc) and by '/' led path, which is optional. 11250 11251 - Issue #6045: dbm.gnu databases now support get() and setdefault() methods. 11252 11253 - Issue #10620: `python -m unittest` can accept file paths instead of module 11254 names for running specific tests. 11255 11256 - Issue #9424: Deprecate the `unittest.TestCase` methods `assertEquals`, 11257 `assertNotEquals`, `assertAlmostEquals`, `assertNotAlmostEquals` and `assert_` 11258 and replace them with the correct methods in the Python test suite. 11259 11260 - Issue #10272: The ssl module now raises socket.timeout instead of a generic 11261 SSLError on socket timeouts. 11262 11263 - Issue #10528: Allow translators to reorder placeholders in localizable 11264 messages from argparse. 11265 11266 - Issue #10497: Fix incorrect use of gettext in argparse. 11267 11268 - Issue #10478: Reentrant calls inside buffered IO objects (for example by 11269 way of a signal handler) now raise a RuntimeError instead of freezing the 11270 current process. 11271 11272 - logging: Added getLogRecordFactory/setLogRecordFactory with docs and tests. 11273 11274 - Issue #10549: Fix pydoc traceback when text-documenting certain classes. 11275 11276 - Issue #2001: New HTML server with enhanced Web page features. Patch by Ron 11277 Adam. 11278 11279 - Issue #10360: In WeakSet, do not raise TypeErrors when testing for membership 11280 of non-weakrefable objects. 11281 11282 - Issue #940286: pydoc.Helper.help() ignores input/output init parameters. 11283 11284 - Issue #1745035: Add a command size and data size limit to smtpd.py, to prevent 11285 DoS attacks. Patch by Savio Sena. 11286 11287 - Issue #4925: Add filename to error message when executable can't be found in 11288 subprocess. 11289 11290 - Issue #10391: Don't dereference invalid memory in error messages in the ast 11291 module. 11292 11293 - Issue #10027: st_nlink was not being set on Windows calls to os.stat or 11294 os.lstat. Patch by Hirokazu Yamamoto. 11295 11296 - Issue #9333: Expose os.symlink only when the SeCreateSymbolicLinkPrivilege is 11297 held by the user's account, i.e., when the function can actually be used. 11298 11299 - Issue #8879: Add os.link support for Windows. 11300 11301 - Issue #7911: ``unittest.TestCase.longMessage`` defaults to True for improved 11302 failure messages by default. Patch by Mark Roddy. 11303 11304 - Issue #1486713: HTMLParser now has an optional tolerant mode where it tries to 11305 guess at the correct parsing of invalid html. 11306 11307 - Issue #10554: Add context management protocol support to subprocess.Popen objects. 11308 11309 - Issue #8989: email.utils.make_msgid now has a domain parameter that can 11310 override the domain name used in the generated msgid. 11311 11312 - Issue #9299: Add exist_ok parameter to os.makedirs to suppress the 'File 11313 exists' exception when a target directory already exists with the specified 11314 mode. Patch by Ray Allen. 11315 11316 - Issue #9573: os.fork() now works correctly when triggered as a side effect of 11317 a module import. 11318 11319 - Issue #10464: netrc now correctly handles lines with embedded '#' characters. 11320 11321 - Added itertools.accumulate(). 11322 11323 - Issue #4113: Added custom ``__repr__`` method to ``functools.partial``. 11324 Original patch by Daniel Urban. 11325 11326 - Issue #10273: Rename `assertRegexpMatches` and `assertRaisesRegexp` to 11327 `assertRegex` and `assertRaisesRegex`. 11328 11329 - Issue #10535: Enable silenced warnings in unittest by default. 11330 11331 - Issue #9873: The URL parsing functions in urllib.parse now accept ASCII byte 11332 sequences as input in addition to character strings. 11333 11334 - Issue #10586: The statistics API for the new functools.lru_cache has been 11335 changed to a single cache_info() method returning a named tuple. 11336 11337 - Issue #10323: itertools.islice() now consumes the minimum number of inputs 11338 before stopping. Formerly, the final state of the underlying iterator was 11339 undefined. 11340 11341 - Issue #10565: The collections.Iterator ABC now checks for both __iter__ and 11342 __next__. 11343 11344 - Issue #10242: Fixed implementation of unittest.ItemsEqual and gave it a new 11345 more informative name, unittest.CountEqual. 11346 11347 - Issue #10561: In pdb, clear the breakpoints by the breakpoint number. 11348 11349 - Issue #2986: difflib.SequenceMatcher gets a new parameter, autojunk, which can 11350 be set to False to turn off the previously undocumented 'popularity' 11351 heuristic. Patch by Terry Reedy and Eli Bendersky. 11352 11353 - Issue #10534: in difflib, expose bjunk and bpopular sets; deprecate 11354 undocumented and now redundant isbjunk and isbpopular methods. 11355 11356 - Issue #9846: zipfile is now correctly closing underlying file objects. 11357 11358 - Issue #10459: Update CJK character names to Unicode 6.0. 11359 11360 - Issue #4493: urllib.request adds '/' in front of path components which does not 11361 start with '/. Common behavior exhibited by browsers and other clients. 11362 11363 - Issue #6378: idle.bat now runs with the appropriate Python version rather than 11364 the system default. Patch by Sridhar Ratnakumar. 11365 11366 - Issue #10470: 'python -m unittest' will now run test discovery by default, 11367 when no extra arguments have been provided. 11368 11369 - Issue #3709: BaseHTTPRequestHandler will buffer the headers and write to 11370 output stream only when end_headers is invoked. This is a speedup and an 11371 internal optimization. Patch by Andrew Shaaf. 11372 11373 - Issue #10220: Added inspect.getgeneratorstate. Initial patch by Rodolpho 11374 Eckhardt. 11375 11376 - Issue #10453: compileall now uses argparse instead of getopt, and thus 11377 provides clean output when called with '-h'. 11378 11379 - Issue #8078: Add constants for higher baud rates in the termios module. Patch 11380 by Rodolpho Eckhardt. 11381 11382 - Issue #10407: Fix two NameErrors in distutils. 11383 11384 - Issue #10371: Deprecated undocumented functions in the trace module. 11385 11386 - Issue #10467: Fix BytesIO.readinto() after seeking into a position after the 11387 end of the file. 11388 11389 - configparser: 100% test coverage. 11390 11391 - Issue #10499: configparser supports pluggable interpolation handlers. The 11392 default classic interpolation handler is called BasicInterpolation. Another 11393 interpolation handler added (ExtendedInterpolation) which supports the syntax 11394 used by zc.buildout (e.g. interpolation between sections). 11395 11396 - configparser: the SafeConfigParser class has been renamed to ConfigParser. 11397 The legacy ConfigParser class has been removed but its interpolation mechanism 11398 is still available as LegacyInterpolation. 11399 11400 - configparser: Usage of RawConfigParser is now discouraged for new projects 11401 in favor of ConfigParser(interpolation=None). 11402 11403 - Issue #1682942: configparser supports alternative option/value delimiters. 11404 11405 - Issue #5412: configparser supports mapping protocol access. 11406 11407 - Issue #9411: configparser supports specifying encoding for read operations. 11408 11409 - Issue #9421: configparser's getint(), getfloat() and getboolean() methods 11410 accept vars and default arguments just like get() does. 11411 11412 - Issue #9452: configparser supports reading from strings and dictionaries 11413 (thanks to the mapping protocol API, the latter can be used to copy data 11414 between parsers). 11415 11416 - configparser: accepted INI file structure is now customizable, including 11417 comment prefixes, name of the DEFAULT section, empty lines in multiline 11418 values, and indentation. 11419 11420 - Issue #10326: unittest.TestCase instances can be pickled. 11421 11422 - Issue #9926: Wrapped TestSuite subclass does not get __call__ executed. 11423 11424 - Issue #9920: Skip tests for cmath.atan and cmath.atanh applied to complex 11425 zeros on systems where the log1p function fails to respect the sign of zero. 11426 This fixes a test failure on AIX. 11427 11428 - Issue #9732: Addition of getattr_static to the inspect module. 11429 11430 - Issue #10446: Module documentation generated by pydoc now links to a 11431 version-specific online reference manual. 11432 11433 - Make the 'No module named' exception message from importlib consistent. 11434 11435 - Issue #10443: Add the SSLContext.set_default_verify_paths() method. 11436 11437 - Issue #10440: Support RUSAGE_THREAD as a constant in the resource module. 11438 Patch by Robert Collins. 11439 11440 - Issue #10429: IMAP.starttls() stored the capabilities as bytes objects, rather 11441 than strings. 11442 11443 C-API 11444 ----- 11445 11446 - Issue #10557: Added a new API function, PyUnicode_TransformDecimalToASCII(), 11447 which transforms non-ASCII decimal digits in a Unicode string to their ASCII 11448 equivalents. 11449 11450 - Issue #9518: Extend the PyModuleDef_HEAD_INIT macro to explicitly 11451 zero-initialize all fields, fixing compiler warnings seen when building 11452 extension modules with gcc with "-Wmissing-field-initializers" (implied by 11453 "-W"). 11454 11455 - Issue #10255: Fix reference leak in Py_InitializeEx(). Patch by Neil 11456 Schemenauer. 11457 11458 - structseq.h is now included in Python.h. 11459 11460 - Loosen PyArg_ValidateKeywordArguments to allow dict subclasses. 11461 11462 Tests 11463 ----- 11464 11465 - regrtest.py once again ensures the test directory is removed from sys.path 11466 when it is invoked directly as the __main__ module. 11467 11468 - `python -m test` can be used to run the test suite as well as `python -m 11469 test.regrtest`. 11470 11471 - Do not fail test_socket when the IP address of the local hostname cannot be 11472 looked up. 11473 11474 - Issue #8886: Use context managers throughout test_zipfile. Patch by Eric 11475 Carstensen. 11476 11477 Build 11478 ----- 11479 11480 - Issue #10325: Fix two issues in the fallback definitions for PY_ULLONG_MAX and 11481 PY_LLONG_MAX that made them unsuitable for use in preprocessor conditionals. 11482 11483 Documentation 11484 ------------- 11485 11486 - Issue #10299: List the built-in functions in a table in functions.rst. 11487 11488 11489 What's New in Python 3.2 Alpha 4? 11490 ================================= 11491 11492 *Release date: 13-Nov-2010* 11493 11494 Core and Builtins 11495 ----------------- 11496 11497 - Issue #10372: Import the warnings module only after the IO library is 11498 initialized, so as to avoid bootstrap issues with the '-W' option. 11499 11500 - Issue #10293: Remove obsolete field in the PyMemoryView structure, unused 11501 undocumented value PyBUF_SHADOW, and strangely-looking code in 11502 PyMemoryView_GetContiguous. 11503 11504 - Issue #6081: Add str.format_map(), similar to ``str.format(**mapping)``. 11505 11506 - If FileIO.__init__ fails, close the file descriptor. 11507 11508 - Issue #10221: dict.pop(k) now has a key error message that includes the 11509 missing key (same message d[k] returns for missing keys). 11510 11511 - Issue #5437: A preallocated MemoryError instance should not keep traceback 11512 data (including local variables caught in the stack trace) alive infinitely. 11513 11514 - Issue #10186: Fix the SyntaxError caret when the offset is equal to the length 11515 of the offending line. 11516 11517 - Issue #10089: Add support for arbitrary -X options on the command line. They 11518 can be retrieved through a new attribute ``sys._xoptions``. 11519 11520 - Issue #4388: On Mac OS X, decode command line arguments from UTF-8, instead of 11521 the locale encoding. If the LANG (and LC_ALL and LC_CTYPE) environment 11522 variable is not set, the locale encoding is ISO-8859-1, whereas most programs 11523 (including Python) expect UTF-8. Python already uses UTF-8 for the filesystem 11524 encoding and to encode command line arguments on this OS. 11525 11526 - Issue #9713, #10114: Parser functions (e.g. PyParser_ASTFromFile) expect 11527 filenames encoded to the filesystem encoding with the surrogateescape error 11528 handler (to support undecodable bytes), instead of UTF-8 in strict mode. 11529 11530 - Issue #9997: Don't let the name "top" have special significance in scope 11531 resolution. 11532 11533 - Issue #9862: Compensate for broken PIPE_BUF in AIX by hard coding its value as 11534 the default 512 when compiling on AIX. 11535 11536 - Use locale encoding instead of UTF-8 to encode and decode filenames if 11537 Py_FileSystemDefaultEncoding is not set. 11538 11539 - Issue #10095: fp_setreadl() doesn't reopen the file, instead reuse the file 11540 descriptor. 11541 11542 - Issue #9418: Moved private string methods ``_formatter_parser`` and 11543 ``_formatter_field_name_split`` into a new ``_string`` module. 11544 11545 - Issue #9992: Remove PYTHONFSENCODING environment variable. 11546 11547 Library 11548 ------- 11549 11550 - Issue #12943: python -m tokenize support has been added to tokenize. 11551 11552 - Issue #10465: fix broken delegating of attributes by gzip._PaddedFile. 11553 11554 - Issue #10356: Decimal.__hash__(-1) should return -2. 11555 11556 - Issue #1553375: logging: Added stack_info kwarg to display stack information. 11557 11558 - Issue #5111: IPv6 Host in the Header is wrapped inside [ ]. Patch by Chandru. 11559 11560 - Fix Fraction.__hash__ so that Fraction.__hash__(-1) is -2. (See also issue 11561 #10356.) 11562 11563 - Issue #4471: Add the IMAP.starttls() method to enable encryption on standard 11564 IMAP4 connections. Original patch by Lorenzo M. Catucci. 11565 11566 - Issue #1466065: Add 'validate' option to base64.b64decode to raise an error if 11567 there are non-base64 alphabet characters in the input. 11568 11569 - Issue #10386: Add __all__ to token module; this simplifies importing in 11570 tokenize module and prevents leaking of private names through ``import *``. 11571 11572 - Issue #4471: Properly shutdown socket in IMAP.shutdown(). Patch by Lorenzo 11573 M. Catucci. 11574 11575 - Fix IMAP.login() to work properly. 11576 11577 - Issue #9244: multiprocessing pool worker processes could terminate 11578 unexpectedly if the return value of a task could not be pickled. Only the 11579 ``repr`` of such errors are now sent back, wrapped in an 11580 ``MaybeEncodingError`` exception. 11581 11582 - Issue #9244: The ``apply_async()`` and ``map_async()`` methods of 11583 ``multiprocessing.Pool`` now accepts an ``error_callback`` argument. This can 11584 be a callback with the signature ``callback(exc)``, which will be called if 11585 the target raises an exception. 11586 11587 - Issue #10022: The dictionary returned by the ``getpeercert()`` method of SSL 11588 sockets now has additional items such as ``issuer`` and ``notBefore``. 11589 11590 - ``usenetrc`` is now false by default for NNTP objects. 11591 11592 - Issue #1926: Add support for NNTP over SSL on port 563, as well as STARTTLS. 11593 Patch by Andrew Vant. 11594 11595 - Issue #10335: Add tokenize.open(), detect the file encoding using 11596 tokenize.detect_encoding() and open it in read only mode. 11597 11598 - Issue #10321: Add support for binary data to smtplib.SMTP.sendmail, and a new 11599 method send_message to send an email.message.Message object. 11600 11601 - Issue #6011: sysconfig and distutils.sysconfig use the surrogateescape error 11602 handler to parse the Makefile file. Avoid a UnicodeDecodeError if the source 11603 code directory name contains a non-ASCII character and the locale encoding is 11604 ASCII. 11605 11606 - Issue #10329: The trace module writes reports using the input Python script 11607 encoding, instead of the locale encoding. Patch written by Alexander 11608 Belopolsky. 11609 11610 - Issue #10126: Fix distutils' test_build when Python was built with 11611 --enable-shared. 11612 11613 - Issue #9281: Prevent race condition with mkdir in distutils. Patch by 11614 Arfrever. 11615 11616 - Issue #10229: Fix caching error in gettext. 11617 11618 - Issue #10252: Close file objects in a timely manner in distutils code and 11619 tests. Patch by Brian Brazil, completed by Éric Araujo. 11620 11621 - Issue #10180: Pickling file objects is now explicitly forbidden, since 11622 unpickling them produced nonsensical results. 11623 11624 - Issue #10311: The signal module now restores errno before returning from its 11625 low-level signal handler. Patch by Hallvard B Furuseth. 11626 11627 - Issue #10282: Add a ``nntp_implementation`` attribute to NNTP objects. 11628 11629 - Issue #10283: Add a ``group_pattern`` argument to NNTP.list(). 11630 11631 - Issue #10155: Add IISCGIHandler to wsgiref.handlers to support IIS CGI 11632 environment better, and to correct unicode environment values for WSGI 1.0.1. 11633 11634 - Issue #10281: nntplib now returns None for absent fields in the OVER/XOVER 11635 response, instead of raising an exception. 11636 11637 - wsgiref now implements and validates PEP 3333, rather than an experimental 11638 extension of PEP 333. (Note: earlier versions of Python 3.x may have 11639 incorrectly validated some non-compliant applications as WSGI compliant; if 11640 your app validates with Python <3.2b1+, but not on this version, it is likely 11641 the case that your app was not compliant.) 11642 11643 - Issue #10280: NNTP.nntp_version should reflect the highest version advertised 11644 by the server. 11645 11646 - Issue #10184: Touch directories only once when extracting a tarfile. 11647 11648 - Issue #10199: New package, ``turtledemo`` now contains selected demo scripts 11649 that were formerly found under Demo/turtle. 11650 11651 - Issue #10265: Close file objects explicitly in sunau. Patch by Brian Brazil. 11652 11653 - Issue #10266: uu.decode didn't close in_file explicitly when it was given as a 11654 filename. Patch by Brian Brazil. 11655 11656 - Issue #10110: Queue objects didn't recognize full queues when the maxsize 11657 parameter had been reduced. 11658 11659 - Issue #10160: Speed up operator.attrgetter. Patch by Christos Georgiou. 11660 11661 - logging: Added style option to basicConfig() to allow %, {} or $-formatting. 11662 11663 - Issue #5729: json.dumps() now supports using a string such as '\t' for 11664 pretty-printing multilevel objects. 11665 11666 - Issue #10253: FileIO leaks a file descriptor when trying to open a file for 11667 append that isn't seekable. Patch by Brian Brazil. 11668 11669 - Support context management protocol for file-like objects returned by mailbox 11670 ``get_file()`` methods. 11671 11672 - Issue #10246: uu.encode didn't close file objects explicitly when filenames 11673 were given to it. Patch by Brian Brazil. 11674 11675 - Issue #10198: fix duplicate header written to wave files when writeframes() is 11676 called without data. 11677 11678 - Close file objects in modulefinder in a timely manner. 11679 11680 - Close an io.TextIOWrapper object in email.parser in a timely manner. 11681 11682 - Close a file object in distutils.sysconfig in a timely manner. 11683 11684 - Close a file object in pkgutil in a timely manner. 11685 11686 - Issue #10233: Close file objects in a timely manner in the tarfile module and 11687 its test suite. 11688 11689 - Issue #10093: ResourceWarnings are now issued when files and sockets are 11690 deallocated without explicit closing. These warnings are silenced by default, 11691 except in pydebug mode. 11692 11693 - tarfile.py: Add support for all missing variants of the GNU sparse extensions 11694 and create files with holes when extracting sparse members. 11695 11696 - Issue #10218: Return timeout status from ``Condition.wait`` in threading. 11697 11698 - Issue #7351: Add ``zipfile.BadZipFile`` spelling of the exception name and 11699 deprecate the old name ``zipfile.BadZipfile``. 11700 11701 - Issue #5027: The standard ``xml`` namespace is now understood by 11702 xml.sax.saxutils.XMLGenerator as being bound to 11703 http://www.w3.org/XML/1998/namespace. Patch by Troy J. Farrell. 11704 11705 - Issue #5975: Add csv.unix_dialect class. 11706 11707 - Issue #7761: telnetlib.interact failures on Windows fixed. 11708 11709 - logging: Added style option to Formatter to allow %, {} or $-formatting. 11710 11711 - Issue #5178: Added tempfile.TemporaryDirectory class that can be used as a 11712 context manager. 11713 11714 - Issue #1349106: Generator (and BytesGenerator) flatten method and Header 11715 encode method now support a 'linesep' argument. 11716 11717 - Issue #5639: Add a *server_hostname* argument to ``SSLContext.wrap_socket`` in 11718 order to support the TLS SNI extension. ``HTTPSConnection`` and ``urlopen()`` 11719 also use this argument, so that HTTPS virtual hosts are now supported. 11720 11721 - Issue #10166: Avoid recursion in pstats Stats.add() for many stats items. 11722 11723 - Issue #10163: Skip unreadable registry keys during mimetypes initialization. 11724 11725 - logging: Made StreamHandler terminator configurable. 11726 11727 - logging: Allowed filters to be just callables. 11728 11729 - logging: Added tests for _logRecordClass changes. 11730 11731 - Issue #10092: Properly reset locale in calendar.Locale*Calendar classes. 11732 11733 - logging: Added _logRecordClass, getLogRecordClass, setLogRecordClass to 11734 increase flexibility of LogRecord creation. 11735 11736 - Issue #5117: Case normalization was needed on ntpath.relpath(). Also fixed 11737 root directory issue on posixpath.relpath(). (Ported working fixes from 11738 ntpath.) 11739 11740 - Issue #1343: xml.sax.saxutils.XMLGenerator now has an option 11741 short_empty_elements to direct it to use self-closing tags when appropriate. 11742 11743 - Issue #9807 (part 1): Expose the ABI flags in sys.abiflags. Add --abiflags 11744 switch to python-config for command line access. 11745 11746 - Issue #6098: Don't claim DOM level 3 conformance in minidom. 11747 11748 - Issue #5762: Fix AttributeError raised by ``xml.dom.minidom`` when an empty 11749 XML namespace attribute is encountered. 11750 11751 - Issue #2830: Add the ``html.escape()`` function, which quotes all problematic 11752 characters by default. Deprecate ``cgi.escape()``. 11753 11754 - Issue #9409: Fix the regex to match all kind of filenames, for interactive 11755 debugging in doctests. 11756 11757 - Issue #9183: ``datetime.timezone(datetime.timedelta(0))`` will now return the 11758 same instance as ``datetime.timezone.utc``. 11759 11760 - Issue #7523: Add SOCK_CLOEXEC and SOCK_NONBLOCK to the socket module, where 11761 supported by the system. Patch by Nikita Vetoshkin. 11762 11763 - Issue #10063: file:// scheme will stop accessing remote hosts via ftp 11764 protocol. file:// urls had fallback to access remote hosts via ftp. This was 11765 not correct, change is made to raise a URLError when a remote host is tried to 11766 access via file:// scheme. 11767 11768 - Issue #1710703: Write structures for an empty ZIP archive when a ZipFile is 11769 created in modes 'a' or 'w' and then closed without adding any files. Raise 11770 BadZipfile (rather than IOError) when opening small non-ZIP files. 11771 11772 - Issue #10041: The signature of optional arguments in socket.makefile() didn't 11773 match that of io.open(), and they also didn't get forwarded properly to 11774 TextIOWrapper in text mode. Patch by Kai Zhu. 11775 11776 - Issue #9003: http.client.HTTPSConnection, urllib.request.HTTPSHandler and 11777 urllib.request.urlopen now take optional arguments to allow for server 11778 certificate checking, as recommended in public uses of HTTPS. 11779 11780 - Issue #6612: Fix site and sysconfig to catch os.getcwd() error, eg. if the 11781 current directory was deleted. Patch written by W. Trevor King. 11782 11783 - Issue #3873: Speed up unpickling from file objects that have a peek() method. 11784 11785 - Issue #10075: Add a session_stats() method to SSLContext objects. 11786 11787 - Issue #9948: Fixed problem of losing filename case information. 11788 11789 Extension Modules 11790 ----------------- 11791 11792 - Issue #5109: array.array constructor will now use fast code when 11793 initial data is provided in an array object with correct type. 11794 11795 - Issue #6317: Now winsound.PlaySound only accepts unicode. 11796 11797 - Issue #6317: Now winsound.PlaySound can accept non ascii filename. 11798 11799 - Issue #9377: Use Unicode API for gethostname on Windows. 11800 11801 - Issue #10143: Update "os.pathconf" values. 11802 11803 - Issue #6518: Support context management protocol for ossaudiodev types. 11804 11805 - Issue #678250: Make mmap flush a noop on ACCESS_READ and ACCESS_COPY. 11806 11807 - Issue #9054: Fix a crash occurring when using the pyexpat module with expat 11808 version 2.0.1. 11809 11810 - Issue #5355: Provide mappings from Expat error numbers to string descriptions 11811 and backwards, in order to actually make it possible to analyze error codes 11812 provided by ExpatError. 11813 11814 - The Unicode database was updated to 6.0.0. 11815 11816 C-API 11817 ----- 11818 11819 - Issue #10288: The deprecated family of "char"-handling macros 11820 (ISLOWER()/ISUPPER()/etc) have now been removed: use Py_ISLOWER() etc instead. 11821 11822 - Issue #9778: Hash values are now always the size of pointers. A new Py_hash_t 11823 type has been introduced. 11824 11825 Tools/Demos 11826 ----------- 11827 11828 - Issue #10117: Tools/scripts/reindent.py now accepts source files that use 11829 encoding other than ASCII or UTF-8. Source encoding is preserved when 11830 reindented code is written to a file. 11831 11832 - Issue #7287: Demo/imputil/knee.py was removed. 11833 11834 Tests 11835 ----- 11836 11837 - Issue #3699: Fix test_bigaddrspace and extend it to test bytestrings as well 11838 as unicode strings. Initial patch by Sandro Tosi. 11839 11840 - Issue #10294: Remove dead code form test_unicode_file. 11841 11842 - Issue #10123: Don't use non-ascii filenames in test_doctest tests. Add a new 11843 test specific to unicode (non-ascii name and filename). 11844 11845 Build 11846 ----- 11847 11848 - Issue #10268: Add a --enable-loadable-sqlite-extensions option to configure. 11849 11850 - Issue #8852: Allow the socket module to build on OpenSolaris. 11851 11852 - Drop -OPT:Olimit compiler option. 11853 11854 - Issue #10094: Use versioned .so files on GNU/kfreeBSD and the GNU Hurd. 11855 11856 - Accept Oracle Berkeley DB 5.0 and 5.1 as backend for the dbm extension. 11857 11858 - Issue #7473: avoid link errors when building a framework with a different set 11859 of architectures than the one that is currently installed. 11860 11861 11862 What's New in Python 3.2 Alpha 3? 11863 ================================= 11864 11865 *Release date: 09-Oct-2010* 11866 11867 Core and Builtins 11868 ----------------- 11869 11870 - Issue #10068: Global objects which have reference cycles with their module's 11871 dict are now cleared again. This causes issue #7140 to appear again. 11872 11873 - Issue #9738: Document PyErr_SetString() and PyErr_SetFromErrnoWithFilename() 11874 encodings. 11875 11876 - ast.literal_eval() can now handle negative numbers. It is also a little more 11877 liberal in what it accepts without compromising the safety of the evaluation. 11878 For example, 3j+4 and 3+4+5 are both accepted. 11879 11880 - Issue #10006: type.__abstractmethods__ now raises an AttributeError. As a 11881 result metaclasses can now be ABCs (see #9533). 11882 11883 - Issue #8670: ctypes.c_wchar supports non-BMP characters with 32 bits wchar_t. 11884 11885 - Issue #8670: PyUnicode_AsWideChar() and PyUnicode_AsWideCharString() replace 11886 UTF-16 surrogate pairs by single non-BMP characters for 16 bits Py_UNICODE and 11887 32 bits wchar_t (eg. Linux in narrow build). 11888 11889 - Issue #10003: Allow handling of SIGBREAK on Windows. Fixes a regression 11890 introduced by issue #9324. 11891 11892 - Issue #9979: Create function PyUnicode_AsWideCharString(). 11893 11894 - Issue #7397: Mention that importlib.import_module() is probably what someone 11895 really wants to be using in __import__'s docstring. 11896 11897 - Issue #8521: Allow CreateKeyEx, OpenKeyEx, and DeleteKeyEx functions of winreg 11898 to use named arguments. 11899 11900 - Issue #9930: Remove bogus subtype check that was causing (e.g.) 11901 float.__rdiv__(2.0, 3) to return NotImplemented instead of the expected 1.5. 11902 11903 - Issue #9808: Implement os.getlogin for Windows. Patch by Jon Anglin. 11904 11905 - Issue #9901: Destroying the GIL in Py_Finalize() can fail if some other 11906 threads are still running. Instead, reinitialize the GIL on a second call to 11907 Py_Initialize(). 11908 11909 - All SyntaxErrors now have a column offset and therefore a caret when the error 11910 is printed. 11911 11912 - Issue #9252: PyImport_Import no longer uses a fromlist hack to return the 11913 module that was imported, but instead gets the module from sys.modules. 11914 11915 - Issue #9213: The range type_items now provides index() and count() methods, to 11916 conform to the Sequence ABC. Patch by Daniel Urban and Daniel Stutzbach. 11917 11918 - Issue #7994: Issue a PendingDeprecationWarning if object.__format__ is called 11919 with a non-empty format string. This is an effort to future-proof user 11920 code. If a derived class does not currently implement __format__ but later 11921 adds its own __format__, it would most likely break user code that had 11922 supplied a format string. This will be changed to a DeprecationWaring in 11923 Python 3.3 and it will be an error in Python 3.4. 11924 11925 - Issue #9828: Destroy the GIL in Py_Finalize(), so that it gets properly 11926 re-created on a subsequent call to Py_Initialize(). The problem (a crash) 11927 wouldn't appear in 3.1 or 2.7 where the GIL's structure is more trivial. 11928 11929 - Issue #9210: Configure option --with-wctype-functions was removed. Using the 11930 functions from the libc caused the methods .upper() and lower() to become 11931 locale aware and created subtly wrong results. 11932 11933 - Issue #9738: PyUnicode_FromFormat() and PyErr_Format() raise an error on a 11934 non-ASCII byte in the format string. 11935 11936 - Issue #4617: Previously it was illegal to delete a name from the local 11937 namespace if it occurs as a free variable in a nested block. This limitation 11938 of the compiler has been lifted, and a new opcode introduced (DELETE_DEREF). 11939 11940 - Issue #9804: ascii() now always represents unicode surrogate pairs as a single 11941 ``\UXXXXXXXX``, regardless of whether the character is printable or not. 11942 Also, the "backslashreplace" error handler now joins surrogate pairs into a 11943 single character on UCS-2 builds. 11944 11945 - Issue #9757: memoryview objects get a release() method to release the 11946 underlying buffer (previously this was only done when deallocating the 11947 memoryview), and gain support for the context management protocol. 11948 11949 - Issue #9797: pystate.c wrongly assumed that zero couldn't be a valid 11950 thread-local storage key. 11951 11952 Library 11953 ------- 11954 11955 - Issue #2236: distutils' mkpath ignored the mode parameter. 11956 11957 - Fix typo in one sdist option (medata-check). 11958 11959 - Issue #9199: Fix incorrect use of distutils.cmd.Command.announce. 11960 11961 - Issue #1718574: Fix options that were supposed to accept arguments but did 11962 not in build_clib. 11963 11964 - Issue #9437: Fix building C extensions with non-default LDFLAGS. 11965 11966 - Issue #4661: email can now parse bytes input and generate either converted 11967 7bit output or bytes output. Email version bumped to 5.1.0. 11968 11969 - Issue #1589: Add ssl.match_hostname(), to help implement server identity 11970 verification for higher-level protocols. 11971 11972 - Issue #9759: GzipFile now raises ValueError when an operation is attempted 11973 after the file is closed. Patch by Jeffrey Finkelstein. 11974 11975 - Issue #9042: Fix interaction of custom translation classes and caching in 11976 gettext. 11977 11978 - Issue #6706: asyncore.dispatcher now provides a handle_accepted() method 11979 returning a (sock, addr) pair which is called when a connection has been 11980 established with a new remote endpoint. This is supposed to be used as a 11981 replacement for old handle_accept() and avoids the user to call accept() 11982 directly. 11983 11984 - Issue #9065: tarfile no longer uses "root" as the default for the uname and 11985 gname field. 11986 11987 - Issue #8980: Fixed a failure in distutils.command check that was shadowed by 11988 an environment that does not have docutils. Patch by Arfrever. 11989 11990 - Issue #1050268: parseaddr now correctly quotes double quote and backslash 11991 characters that appear inside quoted strings in email addresses. 11992 11993 - Issue #10004: quoprimime no longer generates a traceback when confronted with 11994 invalid characters after '=' in a Q-encoded word. 11995 11996 - Issue #1491: BaseHTTPServer nows send a ``100 Continue`` response before 11997 sending a 200 OK for the Expect: 100-continue request header. 11998 11999 - Issue #9360: Cleanup and improvements to the nntplib module. The API now 12000 conforms to the philosophy of bytes and unicode separation in Python 3. A 12001 test suite has also been added. 12002 12003 - Issue #9962: GzipFile now has the peek() method. 12004 12005 - Issue #9090: When a socket with a timeout fails with EWOULDBLOCK or EAGAIN, 12006 retry the select() loop instead of bailing out. This is because select() can 12007 incorrectly report a socket as ready for reading (for example, if it received 12008 some data with an invalid checksum). 12009 12010 - Issue #3612: Added new types to ctypes.wintypes. (CHAR and pointers) 12011 12012 - Issue #9950: Fix socket.sendall() crash or misbehaviour when a signal is 12013 received. Now sendall() properly calls signal handlers if necessary, and 12014 retries sending if these returned successfully, including on sockets with a 12015 timeout. 12016 12017 - Issue #9947: logging: Fixed locking bug in stopListening. 12018 12019 - Issue #9945: logging: Fixed locking bugs in addHandler/removeHandler. 12020 12021 - Issue #9936: Fixed executable lines' search in the trace module. 12022 12023 - Issue #9790: Rework imports necessary for samefile and sameopenfile 12024 in ntpath. 12025 12026 - Issue #9928: Properly initialize the types exported by the bz2 module. 12027 12028 - Issue #1675951: Allow GzipFile to work with unseekable file objects. Patch by 12029 Florian Festi. 12030 12031 - Logging: Added QueueListener class to facilitate logging usage for 12032 performance-critical threads. 12033 12034 - Issue #9916: Add some missing errno symbols. 12035 12036 - Issue #9877: Expose sysconfig.get_makefile_filename() 12037 12038 - logging: Added hasHandlers() method to Logger and LoggerAdapter. 12039 12040 - Issue #9908: Fix os.stat() on bytes paths under Windows 7. 12041 12042 - Issue #2643: msync() is not called anymore when deallocating an open mmap 12043 object, only munmap(). 12044 12045 - logging: Changed LoggerAdapter implementation internally, to make it easier to 12046 subclass in a useful way. 12047 12048 - logging: hasHandlers method was added to Logger, and isEnabledFor, 12049 getEffectiveLevel, hasHandlers and setLevel were added to LoggerAdapter. 12050 LoggerAdapter was introduced into the unit tests for logging. 12051 12052 - Issue #1686: Fix string.Template when overriding the pattern attribute. 12053 12054 - Issue #9854: SocketIO objects now observe the RawIOBase interface in 12055 non-blocking mode: they return None when an operation would block (instead of 12056 raising an exception). 12057 12058 - Issue #1730136: Fix the comparison between a tk.font.Font and an object of 12059 another kind. 12060 12061 - Issue #9441: logging has better coverage for rotating file handlers. 12062 12063 - Issue #9865: collections.OrderedDict now has a __sizeof__ method. 12064 12065 - Issue #9854: The default read() implementation in io.RawIOBase now handles 12066 non-blocking readinto() returning None correctly. 12067 12068 - Issue #1552: socket.socketpair() now returns regular socket.socket objects 12069 supporting the whole socket API (rather than the "raw" _socket.socket 12070 objects). 12071 12072 - Issue #9853: Fix the signature of SSLSocket.recvfrom() and SSLSocket.sendto() 12073 to match the corresponding socket methods. 12074 12075 - Issue #9840: Added a decorator to reprlib for wrapping __repr__ methods to make 12076 them handle recursive calls within the same thread. 12077 12078 - logging: Enhanced HTTPHandler with secure and credentials initializers. 12079 12080 - Issue #767645: Set os.path.supports_unicode_filenames to True on Mac OS X. 12081 12082 - Issue #9837: The read() method of ZipExtFile objects (as returned by 12083 ZipFile.open()) could return more bytes than requested. 12084 12085 - Issue #9826: OrderedDict.__repr__ can now handle self-referential values: 12086 d['x'] = d. 12087 12088 - Issue #9825: Using __del__ in the definition of collections.OrderedDict made 12089 it possible for the user to create self-referencing ordered dictionaries which 12090 become permanently uncollectable GC garbage. Reinstated the Python 3.1 12091 approach of using weakref proxies so that reference cycles never get created 12092 in the first place. 12093 12094 - Issue #9579, #9580: Fix os.confstr() for value longer than 255 bytes and 12095 encode the value with filesystem encoding and surrogateescape (instead of 12096 utf-8 in strict mode) . Patch written by David Watson. 12097 12098 - Issue #9632: Remove sys.setfilesystemencoding() function: use PYTHONFSENCODING 12099 environment variable to set the filesystem encoding at Python startup. 12100 sys.setfilesystemencoding() creates inconsistencies because it is unable to 12101 reencode all filenames in all objects. 12102 12103 - Issue #9410: Various optimizations to the pickle module, leading to speedups 12104 up to 4x (depending on the benchmark). Mostly ported from Unladen Swallow; 12105 initial patch by Alexandre Vassalotti. 12106 12107 - The pprint module now supports printing OrderedDicts in their given order 12108 (formerly, it would sort the keys). 12109 12110 - Logging: Added QueueHandler class to facilitate logging usage with 12111 multiprocessing. 12112 12113 - Issue #9707: Rewritten reference implementation of threading.local which is 12114 friendlier towards reference cycles. This change is not normally visible 12115 since an optimized C implementation (_thread._local) is used instead. 12116 12117 - Issue #6394: os.getppid() is now supported on Windows. Note that it will 12118 still return the id of the parent process after it has exited. This process 12119 id may even have been reused by another unrelated process. 12120 12121 - Issue #9792: In case of connection failure, socket.create_connection() would 12122 swallow the exception and raise a new one, making it impossible to fetch the 12123 original errno, or to filter timeout errors. Now the original error is 12124 re-raised. 12125 12126 - Issue #9758: When fcntl.ioctl() was called with mutable_flag set to True, and 12127 the passed buffer was exactly 1024 bytes long, the buffer wouldn't be updated 12128 back after the system call. Original patch by Brian Brazil. 12129 12130 - Updates to the random module: 12131 12132 * Document which parts of the module are guaranteed to stay the same across 12133 versions and which parts are subject to change. 12134 12135 * Update the seed() method to use all of the bits in a string instead of just 12136 the hash value. This makes better use of the seed value and assures the 12137 seeding is platform independent. Issue #7889. 12138 12139 * Improved the random()-->integer algorithm used in choice(), shuffle(), 12140 sample(), randrange(), and randint(). Formerly, it used int(n*random()) 12141 which has a slight bias whenever n is not a power of two. Issue #9025. 12142 12143 * Improved documentation of arguments to randrange(). Issue #9379. 12144 12145 - collections.OrderedDict now supports a new method for repositioning keys to 12146 either end. 12147 12148 - Issue #9754: Similarly to assertRaises and assertRaisesRegexp, unittest test 12149 cases now also have assertWarns and assertWarnsRegexp methods to check that a 12150 given warning type was triggered by the code under test. 12151 12152 - Issue #5506: BytesIO objects now have a getbuffer() method exporting a view of 12153 their contents without duplicating them. The view is both readable and 12154 writable. 12155 12156 - Issue #7566: Implement os.path.sameopenfile for Windows. 12157 12158 - Issue #9293: I/O streams now raise ``io.UnsupportedOperation`` when an 12159 unsupported operation is attempted (for example, writing to a file open only 12160 for reading). 12161 12162 - hashlib has two new constant attributes: algorithms_guaranteed and 12163 algorithms_available that respectively list the names of hash algorithms 12164 guaranteed to exist in all Python implementations and the names of hash 12165 algorithms available in the current process. 12166 12167 - A new package ``concurrent.futures`` as defined by PEP 3148. 12168 12169 C-API 12170 ----- 12171 12172 - Add PyErr_SyntaxLocationEx, which supports passing a column offset. 12173 12174 - Issue #9834: Don't segfault in PySequence_GetSlice, PySequence_SetSlice, or 12175 PySequence_DelSlice when the object doesn't have any mapping operations 12176 defined. 12177 12178 Tools/Demos 12179 ----------- 12180 12181 - Issue #9188: The gdb extension now handles correctly narrow (UCS2) as well as 12182 wide (UCS4) unicode builds for both the host interpreter (embedded inside gdb) 12183 and the interpreter under test. 12184 12185 Tests 12186 ----- 12187 12188 - Issue #9308: Added tests for importing encoded modules that do not 12189 depend on specific stdlib modules being encoded in a certain way. 12190 12191 - Issue #1051: Add a script (Lib/test/make_ssl_certs.py) to generate the custom 12192 certificate and private key files used by SSL-related certs. 12193 12194 - Issue #9978: Wait until subprocess completes initialization. (Win32KillTests 12195 in test_os) 12196 12197 - Issue #7110: regrtest now sends test failure reports and single-failure 12198 tracebacks to stderr rather than stdout. 12199 12200 - Issue #9628: fix runtests.sh -x option so more than one test can be excluded. 12201 12202 - Issue #9899: Fix test_tkinter.test_font on various platforms. Patch by Ned 12203 Deily. 12204 12205 - Issue #9894: Do not hardcode ENOENT in test_subprocess. 12206 12207 - Issue #9315: Added tests for the trace module. Patch by Eli Bendersky. 12208 12209 - Issue #9323: Make test.regrtest.__file__ absolute, this was not always the 12210 case when running profile or trace, for example. 12211 12212 - Issue #9568: Fix test_urllib2_localnet on OS X 10.3. 12213 12214 Build 12215 ----- 12216 12217 - Issue #10062: Allow building on platforms which do not have sem_timedwait. 12218 12219 - Issue #10054: Some platforms provide uintptr_t in inttypes.h. Patch by Akira 12220 Kitada. 12221 12222 - Issue #10055: Make json C89-compliant in UCS4 mode. 12223 12224 - Issue #9552: Avoid unnecessary rebuild of OpenSSL. (Windows) 12225 12226 - Issue #1633863: Don't ignore $CC under AIX. 12227 12228 - Issue #9810: Compile bzip2 source files in Python's project file directly. It 12229 used to be built with bzip2's makefile. 12230 12231 - Issue #9848: Stopping trying to build _weakref in setup.py as it is a built-in 12232 module. 12233 12234 - Issue #9806: python-config now has an ``--extension-suffix`` option that 12235 outputs the suffix for dynamic libraries including the ABI version name 12236 defined by PEP 3149. 12237 12238 - Issue #941346: Improve the build process under AIX and allow Python to be 12239 built as a shared library. Patch by Sébastien Sablé. 12240 12241 - Issue #4026: Make the fcntl extension build under AIX. Patch by Sébastien 12242 Sablé. 12243 12244 - Issue #9701: The MacOSX installer can patch the shell profile to ensure that 12245 the "bin" directory inside the framework is on the shell's search path. This 12246 feature now also supports the ZSH shell. 12247 12248 12249 What's New in Python 3.2 Alpha 2? 12250 ================================= 12251 12252 *Release date: 05-Sep-2010* 12253 12254 Core and Builtins 12255 ----------------- 12256 12257 - Issue #9225: Remove the ROT_FOUR and DUP_TOPX opcode, the latter replaced by 12258 the new (and simpler) DUP_TOP_TWO. Performance isn't changed, but our 12259 bytecode is a bit simplified. Patch by Demur Rumed. 12260 12261 - Issue #9766: Rename poorly named variables exposed by _warnings to prevent 12262 confusion with the proper variables names from 'warnings' itself. 12263 12264 - Issue #9212: dict_keys and dict_items now provide the isdisjoint() method, to 12265 conform to the Set ABC. Patch by Daniel Urban. 12266 12267 - Issue #9737: Fix a crash when trying to delete a