5 (editors: check NEWS.help for information about editing NEWS using ReST.)
7 What's New in Python 2.7 alpha 1
8 ================================
10 *Release date: XX-XXX-20XX*
15 - Issue #1616979: Added the cp720 (Arabic DOS) encoding.
17 - Issue #6070: On posix platforms import no longer copies the execute bit
18 from the .py file to the .pyc file if it is set. Patch by Marco N.
20 - Issue #4618: When unicode arguments are passed to print(), the default
21 separator and end should be unicode also.
23 - Issue #6119: Fixed a incorrect Py3k warning about order comparisons of builtin
24 functions and methods.
26 - Issue #6347: Include inttypes.h as well as stdint.h in pyport.h.
27 This fixes a build failure on HP-UX: int32_t and uint32_t are
28 defined in inttypes.h instead of stdint.h on that platform.
30 - Issue #4856: Remove checks for win NT.
32 - Issue #2016: Fixed a crash in a corner case where the dictionary of keyword
33 arguments could be modified during the function call setup.
35 - Removed the ipaddr module.
37 - Issue #6329: Fixed iteration for memoryview objects (it was being blocked
38 because it wasn't recognized as a sequence).
40 - Issue #6289: Encoding errors from compile() were being masked.
42 - When no module is given in a relative import, the module field of the
43 ImportFrom AST node is now None instead of an empty string.
45 - Assignment to None using import statements now raises a SyntaxError.
47 - In the slice AST type, the step field will always be None if a step expression
50 - Issue #4547: When debugging a very large function, it was not always
51 possible to update the lineno attribute of the current frame.
53 - Issue #5330: C functions called with keyword arguments were not reported by
54 the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.
56 - Issue #5982: staticmethod and classmethod now expose the wrapped
57 function with __func__.
59 - Added support for multiple context managers in the same with-statement.
60 Deprecated contextlib.nested() which is no longer needed.
62 - Issue #6101: A new opcode, SETUP_WITH, has been added to speed up the with
63 statement and correctly lookup the __enter__ and __exit__ special methods.
65 - Issue #5829: complex("1e500") no longer raises OverflowError. This
66 makes it consistent with float("1e500") and interpretation of real
67 and imaginary literals.
69 - Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
71 - __instancecheck__ and __subclasscheck__ are now completely ignored on classic
72 classes and instances.
74 - Issue #5994: the marshal module now has docstrings.
76 - Issue #5981: Fix three minor inf/nan issues in float.fromhex:
77 (1) inf and nan strings with trailing whitespace were incorrectly
78 rejected; (2) parsing of strings representing infinities and nans
79 was locale aware; and (3) the interpretation of fromhex('-nan')
80 didn't match that of float('-nan').
82 - Issue #5920: For float.__format__, change the behavior with the
83 empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
84 to be like 'g' but with at least one decimal point and with a
85 default precision of 12. Previously, the behavior the same but with
86 a default precision of 6. This more closely matches str(), and
87 reduces surprises when adding alignment flags to the empty
88 presentation type. This also affects the new complex.__format__ in
91 - Issue #5890: in subclasses of 'property' the __doc__ attribute was
92 shadowed by classtype's, even if it was None. property now
93 inserts the __doc__ into the subclass instance __dict__.
95 - Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
96 sequences. Patch by Nick Barnes and Victor Stinner.
98 - Issue #1588: Add complex.__format__. For example,
99 format(complex(1, 2./3), '.5') now produces a sensible result.
101 - Issue #5864: Fix empty format code formatting for floats so that it
102 never gives more than the requested number of significant digits.
104 - Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
105 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
107 - Issue #4971: Fix titlecase for characters that are their own
108 titlecase, but not their own uppercase.
110 - Issue #5835: Deprecate PyOS_ascii_formatd and replace it with
111 _PyOS_double_to_string or PyOS_double_to_string.
113 - Issue #5283: Setting __class__ in __del__ caused a segfault.
115 - Issue #5816: complex(repr(z)) now recovers z exactly, even when
116 z involves nans, infs or negative zeros.
118 - Implement PEP 378, Format Specifier for Thousands Separator, for
119 floats, ints, and longs.
121 - Issue #5515: 'n' formatting for ints, longs, and floats handles
122 leading zero formatting poorly.
124 - Issue #5772: For float.__format__, don't add a trailing ".0" if
125 we're using no type code and we have an exponent.
127 - Issue #3166: Make long -> float (and int -> float) conversions
130 - Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
133 - Issue #1869: fix a couple of minor round() issues. round(5e15+1)
134 was giving 5e15+2; round(-0.0) was losing the sign of the zero.
136 - Issue #5759: float() didn't call __float__ on str subclasses.
138 - Issue #5704: the "-3" command-line option now implies "-t".
140 - Issue #2170: refactored xml.dom.minidom.normalize, increasing both
141 its clarity and its speed.
143 - Issue #2396: the memoryview object was backported from Python 3.1.
145 - Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
146 when hitting the recursion limit under certain circumstances.
148 - Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
150 - Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
151 the end sys.path, for compatibility with the system install of Python.
153 - Issue #4688: Add a heuristic so that tuples and dicts containing only
154 untrackable objects are not tracked by the garbage collector. This can
155 reduce the size of collections and therefore the garbage collection overhead
156 on long-running programs, depending on their particular use of datatypes.
158 - Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
159 improve its performance. Long divisions and remainder operations
160 are now between 50% and 150% faster.
162 - Issue #4258: Make it possible to use base 2**30 instead of base
163 2**15 for the internal representation of integers, for performance
164 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
165 --enable-big-digits option to configure, which overrides the
166 default. Add sys.long_info structseq to provide information about
169 - Issue #4034: Fix weird attribute error messages of the traceback object. (As a
170 result traceback.__members__ no longer exists.)
172 - Issue #4474: PyUnicode_FromWideChar now converts characters outside
173 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
174 and sizeof(Py_UNICODE) == 2.
176 - Issue #5237: Allow auto-numbered fields in str.format(). For
177 example: '{} {}'.format(1, 2) == '1 2'.
179 - Issue #3652: Make the 'line' argument for warnings.showwarning() a
180 requirement. Means the DeprecationWarning from Python 2.6 can go away.
182 - Issue #5247: Improve error message when unknown format codes are
183 used when using str.format() with str, unicode, long, int, and
186 - Running Python with the -3 option now also warns about classic division
189 - Issue #5260: Long integers now consume less memory: average
190 saving is 2 bytes per long on a 32-bit system and 6 bytes per long
193 - Issue #5186: Reduce hash collisions for objects with no __hash__ method by
194 rotating the object pointer by 4 bits to the right.
196 - Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
197 it now forces its argument to double before testing for infinity.
199 - Issue #4978: Passing keyword arguments as unicode strings is now allowed.
201 - Issue #1242657: the __len__() and __length_hint__() calls in several tools
202 were suppressing all exceptions. These include list(), filter(), map(),
203 zip(), and bytearray().
205 - os.ftruncate raises OSErrors instead of IOErrors for consistency with other os
208 - Issue #4991: Passing invalid file descriptors to io.FileIO now raises an
211 - Issue #4807: Port the _winreg module to Windows CE.
213 - Issue #4935: The overflow checking code in the expandtabs() method common
214 to str, bytes and bytearray could be optimized away by the compiler, letting
215 the interpreter segfault instead of raising an error.
217 - Issue #3720: Fix a crash when an iterator modifies its class and removes its
220 - Issue #4893: Use NT threading on CE.
222 - Issue #4915: Port sysmodule to Windows CE.
224 - Issue #4074: Change the criteria for doing a full garbage collection (i.e.
225 collecting the oldest generation) so that allocating lots of objects without
226 destroying them does not show quadratic performance. Based on a proposal by
228 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
230 - Issue #4850: Change COUNT_ALLOCS variables to Py_ssize_t.
232 - Issue #1180193: When importing a module from a .pyc (or .pyo) file with
233 an existing .py counterpart, override the co_filename attributes of all
234 code objects if the original filename is obsolete (which can happen if the
235 file has been renamed, moved, or if it is accessed through different paths).
236 Patch by Ziga Seilnacht and Jean-Paul Calderone.
238 - Issue #4075: Use OutputDebugStringW in Py_FatalError.
240 - Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
241 file with `str' filename on Windows.
243 - Issue #3680: Reference cycles created through a dict, set or deque iterator
244 did not get collected.
246 - Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
247 where the tp_hash and tp_dict slots are both NULL.
249 - Issue #4764: With io.open, IOError.filename is set when trying to open a
250 directory on POSIX systems.
252 - Issue #4764: IOError.filename is set when trying to open a directory on POSIX
255 - Issue #4759: None is now allowed as the first argument of
256 bytearray.translate(). It was always allowed for bytes.translate().
258 - Added test case to ensure attempts to read from a file opened for writing
261 - Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
262 print elapsed times, not only when some objects are uncollectable /
263 unreachable. Original patch by Neil Schemenauer.
265 - Issue #3439: Add a bit_length method to int and long.
267 - Issue #2183: Simplify and optimize bytecode for list comprehensions.
268 Original patch by Neal Norwitz.
270 - Issue #4597: Fixed exception handling when the __exit__ function of a
271 context manager returns a value that cannot be converted to a bool.
273 - Issue #4597: Fixed several opcodes that weren't always propagating
276 - Issue #4445: Replace "sizeof(PyStringObject)" with
277 "offsetof(PyStringObject, ob_sval) + 1" when allocating memory for
278 str instances. On a typical machine this saves 3 bytes of memory
279 (on average) per string allocation.
281 - Issue #3996: On Windows, the PyOS_CheckStack function would cause the
282 interpreter to abort ("Fatal Python error: Could not reset the stack!")
283 instead of throwing a MemoryError.
285 - Issue #3689: The list reversed iterator now supports __length_hint__
286 instead of __len__. Behavior now matches other reversed iterators.
288 - Issue #4367: Python would segfault during compiling when the unicodedata
289 module couldn't be imported and \N escapes were present.
291 - Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
292 method on file objects with closefd=False. The file descriptor is still
293 kept open but the file object behaves like a closed file. The ``FileIO``
294 object also got a new readonly attribute ``closefd``.
296 - Issue #4348: Some bytearray methods returned that didn't cause any change to
297 the bytearray, returned the same bytearray instead of a copy.
299 - Issue #4317: Fixed a crash in the imageop.rgb2rgb8() function.
301 - Issue #4230: If ``__getattr__`` is a descriptor, it now functions correctly.
303 - Issue #4048: The parser module now correctly validates relative imports.
305 - Issue #4225: ``from __future__ import unicode_literals`` didn't work in an
308 - Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
309 method does not return iterators for the 4th and 5th items.
311 - Issue #4209: Enabling unicode_literals and the print_function in the same
312 __future__ import didn't work.
314 - Using ``nonlocal`` as a variable name will now raise a Py3k SyntaxWarning
315 because it is a reserved word in 3.x.
317 - On windows, os.chdir given unicode was not working if GetCurrentDirectoryW
318 returned a path longer than MAX_PATH. (But It's doubtful this code path is
319 really executed because I cannot move to such directory on win2k)
321 - Issue #4069: When set.remove(element) is used with a set element, the element
322 is temporarily replaced with an equivalent frozenset. But the eventual
323 KeyError would always report the empty frozenset([]) as the missing key. Now
324 it correctly refers to the initial element.
326 - Issue #4509: Various issues surrounding resize of bytearray objects to
327 which there are buffer exports.
329 - Issue #4748: Lambda generators no longer return a value.
331 - Issue #3582: Use native TLS functions on Windows
333 - The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
335 - Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
338 - Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
339 to avoid compiler warnings.
341 - Issue #5705: os.setuid() would not accept values > 2**31-1 but pwd.getpwnam()
342 returned them on 64bit platforms.
344 - Issue #5108: Handle %s like %S and %R in PyUnicode_FromFormatV(): Call
345 PyUnicode_DecodeUTF8() once, remember the result and output it in a second
346 step. This avoids problems with counting UTF-8 bytes that ignores the effect
347 of using the replace error handler in PyUnicode_DecodeUTF8().
349 - Issue #3739: The unicode-internal encoder now reports the number of characters
350 consumed like any other encoder (instead of the number of bytes).
355 - Issue #6431: Make Fraction type return NotImplemented when it doesn't
356 know how to handle a comparison without loss of precision. Also add
357 correct handling of infinities and nans for comparisons with float.
359 - Issue #6415: Fixed warnings.warn sagfault on bad formatted string.
361 - Issue #6466: now distutils.cygwinccompiler and distutils.emxccompiler
362 uses the same refactored function to get gcc/ld/dllwrap versions numbers.
363 It's `distutils.util.get_compiler_versions`. Added deprecation warnings
364 for the obsolete get_versions() functions.
366 - Issue #6433: fixed issues with multiprocessing.pool.map hanging on empty list
368 - Issue #6314: logging: Extra checks on the "level" argument in more places.
370 - Issue #2622: Fixed an ImportError when importing email.messsage from a
371 standalone application built with py2exe or py2app.
373 - Issue #6455: Fixed test_build_ext under win32.
375 - Issue #6377: Enabled the compiler option, and deprecate its usage as an
378 - Issue #6413: Fixed the log level in distutils.dist for announce.
380 - Issue #3392: The subprocess communicate() method no longer fails in select()
381 when file descriptors are large; communicate() now uses poll() when possible.
383 - Issue #6403: Fixed package path usage in build_ext.
385 - Issues #5155, 5313, 5331: multiprocessing.Process._bootstrap was
386 unconditionally calling "os.close(sys.stdin.fileno())" resulting in file
389 - Issue #6365: Distutils build_ext inplace mode was copying the compiled
390 extension in a subdirectory if the extension name had dots.
392 - Issue #6344: Fixed a crash of mmap.read() when passed a negative argument.
394 - Issue #5230: pydoc would report no documentation found if a module generated
395 a 'not found' import error when loaded; it now reports the import errors.
396 Thanks to Lucas Prado Melo for initial fix and collaboration on the tests.
398 - Issue #6314: logging.basicConfig() performs extra checks on the "level"
401 - Issue #6164: Added an AIX specific linker argument in Distutils
402 unixcompiler. Original patch by Sridhar Ratnakumar.
404 - Issue #6274: Fixed possible file descriptors leak in subprocess.py
406 - Issue #6189: Restored compatibility of subprocess.py with Python 2.2.
408 - Issue #6287: Added the license field in Distutils documentation.
410 - Issue #6286: Now Distutils upload command is based on urllib2 instead of
411 httplib, allowing the usage of http_proxy.
413 - Issue #6271: mmap tried to close invalid file handle (-1) when annonymous.
416 - Issue #6215: All bug fixes and enhancements from the Python 3.1 io library
417 (including the fast C implementation) have been backported to the standard
420 - Issue #6258: Support AMD64 in bdist_msi.
422 - Issue #5262: Fixed bug in next rollover time computation in
423 TimedRotatingFileHandler.
425 - Issue #6263: Fixed syntax error in distutils.cygwincompiler.
427 - Issue #5201: distutils.sysconfig.parse_makefile() now understands `$$`
428 in Makefiles. This prevents compile errors when using syntax like:
429 `LDFLAGS='-rpath=\$$LIB:/some/other/path'`. Patch by Floris Bruynooghe.
431 - Issue #5767: Removed sgmlop support from xmlrpclib.
433 - Issue #6131: test_modulefinder leaked when run after test_distutils.
434 Patch by Hirokazu Yamamoto.
436 - Issue #6048: Now Distutils uses the tarfile module in archive_util.
438 - Issue #5150: IDLE's format menu now has an option to strip trailing
441 - Issue #6121: pydoc now ignores leading and trailing spaces in the
442 argument to the 'help' function.
444 - In unittest, using a skipping decorator on a class is now equivalent to
445 skipping every test on the class. The ClassTestSuite class has been removed.
447 - Issue #6050: Don't fail extracting a directory from a zipfile if
448 the directory already exists.
450 - Issue #5311: bdist_msi can now build packages that do not depend on a
451 specific Python version.
453 - Issue #1309352: fcntl now converts its third arguments to a C `long` rather
454 than an int, which makes some operations possible under 64-bit Linux (e.g.
455 DN_MULTISHOT with F_NOTIFY).
457 - Issue #1424152: Fix for httplib, urllib2 to support SSL while working through
458 proxy. Original patch by Christopher Li, changes made by Senthil Kumaran.
460 - Issue #1983: Fix functions taking or returning a process identifier to use
461 the dedicated C type ``pid_t`` instead of a C ``int``. Some platforms have
462 a process identifier type wider than the standard C integer type.
464 - Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket.
465 Patch by Farhan Ahmad, test by Marcin Bachry.
467 - Issue #6062: In distutils, fixed the package option of build_ext. Feedback
468 and tests on pywin32 by Tim Golden.
470 - Issue #6053: Fixed distutils tests on win32. patch by Hirokazu Yamamoto.
472 - Issue #6046: Fixed the library extension when distutils build_ext is used
473 inplace. Initial patch by Roumen Petrov.
475 - Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
478 - Issue #2116: Weak references and weak dictionaries now support copy()ing and
481 - Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
483 - Issue #5918: Fix a crash in the parser module.
485 - Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
487 - Issue #6022: a test file was created in the current working directory by
488 test_get_outputs in Distutils.
490 - Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
491 file is a binary. Patch by Brodie Rao, tests by Daniel Diniz.
493 - Issue #5977: distutils build_ext.get_outputs was not taking into account the
494 inplace option. Initial patch by kxroberto.
496 - Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
497 for old-style extensions.
499 - Issue #5971: StreamHandler.handleError now swallows IOErrors which occur when
500 trying to print a traceback.
502 - Issue #5976: Fixed Distutils test_check_environ.
504 - Issue #5900: Ensure RUNPATH is added to extension modules with RPATH if GNU
505 ld is used. Original patch by Floris Bruynooghe.
507 - Issue #5941: Distutils build_clib command was not working anymore because
508 of an incomplete costumization of the archiver command. Added ARFLAGS in the
509 Makefile besides AR and make Distutils use it. Original patch by David
512 - Issue 5955: aifc's close method did not close the file it wrapped,
513 now it does. This also means getfp method now returns the real fp.
515 - Issue #4875: On win32, ctypes.util.find_library does no longer
518 - Issue #5142: Add the ability to skip modules while stepping to pdb.
520 - Issue #1309567: Fix linecache behavior of stripping subdirectories when
521 looking for files given by a relative filename.
523 - Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
524 extracting a file to the root directory.
526 - Issue #5913: os.listdir() should fail for empty path on windows.
528 - Issue #5084: unpickling now interns the attribute names of pickled objects,
529 saving memory and avoiding growth in size of subsequent pickles. Proposal
530 and original patch by Jake McGuire.
532 - Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
533 error when a named pipe is encountered, rather than blocking infinitely.
535 - Issue #3959: The ipaddr module has been added to the standard library.
536 Contributed by Google.
538 - Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
540 - Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
543 - Issue #4305: ctypes should now build again on mipsel-linux-gnu
545 - Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
546 string is already in normalized form, by performing a quick check beforehand.
547 Original patch by Rauli Ruohonen.
549 - Issue #5853: calling a function of the mimetypes module from several threads
550 at once could hit the recursion limit if the mimetypes database hadn't been
553 - Issue #5854: Updated __all__ to include some missing names and remove some
554 names which should not be exported.
556 - Issue #5810: Fixed Distutils test_build_scripts so it uses
557 sysconfig.get_config_vars.
559 - Issue #4951: Fixed failure in test_httpservers.
561 - Issue #3102: All global symbols that the _ctypes extension defines
562 are now prefixed with 'Py' or '_ctypes'.
564 - Issue #5041: ctypes does now allow pickling wide character.
566 - Issue #5812: For the two-argument form of the Fraction constructor,
567 Fraction(m, n), m and n are permitted to be arbitrary Rational
570 - Issue #5812: Fraction('1e6') is valid: more generally, any string
571 that's valid for float() is now valid for Fraction(), with the
572 exception of strings representing NaNs and infinities.
574 - Issue #5795: Fixed test_distutils failure on Debian ppc.
576 - Issue #5768: Fixed bug in Unicode output logic and test case for same.
578 - Issue #1161031: fix readwrite select flag handling: POLLPRI now
579 results in a handle_expt_event call, not handle_read_event, and POLLERR
580 and POLLNVAL now call handle_close, not handle_expt_event. Also,
581 dispatcher now has an 'ignore_log_types' attribute for suppressing
582 log messages, which is set to 'warning' by default.
584 - Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
586 - Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
587 a value in SafeConfigParser.
589 - Issue #5732: added a new command in Distutils: check.
591 - Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
592 platforms. Initial patch by Paul Moore.
594 - Issue #2254: Fix CGIHTTPServer information disclosure. Relative paths are
595 now collapsed within the url properly before looking in cgi_directories.
597 - Issue #5095: Added bdist_msi to the list of bdist supported formats.
598 Initial fix by Steven Bethard.
600 - Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
601 Initial fix by Wayne Davison.
603 - Issue #5693: TestSuite.__iter__ can now be consistently overridden in subclasses.
605 - Issue #5694: removed spurious test output in Distutils (test_clean).
607 - Issue #5471: Fix os.path.expanduser() for $HOME set to '/'.
609 - Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
611 - Issue #1726172: fix IndexError in the case of and empty response in ftplib.
613 - Issue #2625: added missing iteritems() call to the for loop in
614 mailbox.MH.get_message().
616 - Issue #5585: Add the ability to call an initializer to mulitiprocessing.manager
617 so that users can install custom handlers/etc.
619 - Issue #3551: Patch multiprocessing to raise a proper exception if the size of the
620 object when writefile is called causes a ERROR_NO_SYSTEM_RESOURCES. Added docs
621 to note the limitation
623 - unittest.assertNotEqual() now uses the inequality operator (!=) instead
624 of the equality operator.
626 - Issue #6001: Test discovery for unittest. Implemented in
627 unittest.TestLoader.discover and from the command line.
629 - Issue #5679: The methods unittest.TestCase.addCleanup and doCleanups were added.
630 addCleanup allows you to add cleanup functions that will be called
631 unconditionally (after setUp if setUp fails, otherwise after tearDown). This
632 allows for much simpler resource allocation and deallocation during tests.
634 - Issue #3379: unittest.main now takes an optional exit argument. If False main
635 doesn't call sys.exit allowing it to be used from the interactive interpreter.
637 - Issue #5995: unittest.main now takes an optional verbosity argument allowing
638 test modules to be run with a higher than default verbosity.
640 - Issue #5995: A fix to allow you to run "python -m unittest test_module" or
641 "python -m unittest test_module.TestClass" from the command line.
643 - Issue #5728: unittest.TestResult has new startTestRun and stopTestRun methods;
644 called immediately before and after a test run.
646 - Issue #5663: better failure messages for unittest asserts. Default assertTrue
647 and assertFalse messages are now useful. TestCase has a longMessage attribute.
648 This defaults to False, but if set to True useful error messages are shown in
649 addition to explicit messages passed to assert methods.
651 - Issue #3110: Add additional protect around SEM_VALUE_MAX for multiprocessing
653 - In Pdb, prevent the reassignment of __builtin__._ by sys.displayhook on
656 - Issue #4572: added SEEK_* symbolic constants to io module.
658 - Issue #1665206 (partially): Move imports in cgitb to the top of the module
659 instead of performing them in functions. Helps prevent import deadlocking in
662 - Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
664 - Actually make the SimpleXMLRPCServer CGI handler work.
666 - Issue #2522: locale.format now checks its first argument to ensure it has
667 been passed only one pattern, avoiding mysterious errors where it appeared
668 that it was failing to do localization.
670 - Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
673 - Issue #5619: Multiprocessing children disobey the debug flag and causes
674 popups on windows buildbots. Patch applied to work around this issue.
676 - Issue #5632: Thread.ident was None for the main thread and threads not created
677 with the threading module.
679 - Issue #5400: Added patch for multiprocessing on netbsd compilation/support
681 - Issue #5387: Fixed mmap.move crash by integer overflow.
683 - Issue #5261: Patch multiprocessing's semaphore.c to support context
684 manager use: "with multiprocessing.Lock()" works now.
686 - Issue #5177: Multiprocessing's SocketListener class now uses
687 socket.SO_REUSEADDR on all connections so that the user no longer needs
688 to wait 120 seconds for the socket to expire.
690 - Adjusted _tkinter to compile without warnings when WITH_THREAD is not
691 defined (part of issue #5035).
693 - Issue #5561: Removed the sys.version_info shortcuts from platform's
694 python_version() and python_version_tuple() since they produced different
695 output compared to previous Python versions.
697 - Issue #1034053: unittest now supports skipping tests and expected failures.
699 - The unittest.TestCase.assertRaises() method now returns a context manager when
700 not given a callable so that code to be tested can be written inline using
703 - The unittest.TestCase.assertEqual() now displays the differences in lists,
704 tuples, dicts and sets on failure. Many new handy type and comparison
705 specific assert* methods have been added that fail with error messages
706 actually useful for debugging. Contributed in part by Google. [Issue #2578]
708 - Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
709 forever on incomplete input. That caused tarfile.open() to hang when used
710 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
711 partial bzip2 compressed data.
713 - Issue #5536: urllib.urlretrieve makes sure to close the file it's writing to
714 even if an exception occurs.
716 - Issue #5381: Added object_pairs_hook to the json module. This allows
717 OrderedDicts to be built by the decoder.
719 - Issue #2110: Add support for thousands separator and 'n' type
720 specifier to Decimal.__format__
722 - Fix Decimal.__format__ bug that swapped the meanings of the '<' and
723 '>' alignment characters.
725 - Issue #1222: locale.format() bug when the thousands separator is a space
728 - Issue #5472: Fixed distutils.test_util tear down. Original patch by
731 - collections.deque() objects now have a read-only attribute called maxlen.
733 - Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
734 it is has been populated and properly configured in order to prevent
737 - Issue #4792: Prevent a segfault in _tkinter by using the
738 guaranteed to be safe interp argument given to the PythonCmd in place of
739 the Tcl interpreter taken from a PythonCmd_ClientData.
741 - Issue #5193: Guarantee that Tkinter.Text.search returns a string.
743 - Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
744 Original patch by Akira Kitada.
746 - Issue #5385: Fixed mmap crash after resize failure on windows.
748 - Issue #5179: Fixed subprocess handle leak on failure on windows.
750 - PEP 372: Added collections.OrderedDict().
752 - The _asdict() for method for namedtuples now returns an OrderedDict().
754 - The configparser module now defaults to using an ordered dictionary.
756 - Issue #4308: httplib.IncompleteRead's repr doesn't include all of the data all
759 - Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
760 import guess_extension`` was used.
762 - Issue #1733986: Fixed mmap crash in accessing elements of second map object
763 with same tagname but larger size than first map. (Windows)
765 - Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
768 - Issue #1533164: Installed but not listed *.pyo was breaking Distutils
771 - Issue #5378: added --quiet option to Distutils bdist_rpm command.
773 - Issue #5052: make Distutils compatible with 2.3 again.
775 - Deprecated methods of symtable.Symbol have been removed: is_keywordarg(),
776 is_vararg(), and is_in_tuple().
778 - Issue #5316: Fixed buildbot failures introduced by multiple inheritance
781 - Issue #5287: Add exception handling around findCaller() call to help out
784 - Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
785 The file was resized to wrong size.
787 - Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
789 - Issue #2279: distutils.sdist.add_defaults now add files
790 from the package_data and the data_files metadata.
792 - Issue #5257: refactored all tests in distutils, so they use
793 support.TempdirManager, to avoid writing in the tests directory.
795 - Issue #4524: distutils build_script command failed with --with-suffix=3.
796 Initial patch by Amaury Forgeot d'Arc.
798 - Issue #2461: added tests for distutils.util
800 - Issue #1008086: Fixed socket.inet_aton() to always return 4 bytes even on
801 LP64 platforms (most 64-bit Linux, bsd, unix systems).
803 - Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
804 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
806 - Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
807 under NT and OS2. Patch by Philip Jenvey.
809 - Issue #5128: Make compileall properly inspect bytecode to determine if needs
810 to be recreated. This avoids a timing hole thanks to the old reliance on the
811 ctime of the files involved.
813 - Issue #5122: Synchronize tk load failure check to prevent a potential
816 - Issue #1818: collections.namedtuple() now supports a keyword argument
817 'rename' which lets invalid fieldnames be automatically converted to
818 positional names in the form, _1, _2, ...
820 - Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
822 - Issue #5170: Fixed Unicode output bug in logging and added test case.
823 This is a regression which did not occur in 2.5.
825 - Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
826 public documented method ``ZipImporter.get_filename()``.
828 - Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
829 the execution of packages by looking for and executing a ``__main__``
830 submodule when a package name is supplied. Initial patch by Andi
833 - Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
834 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
835 Tkapp_Call when calling from a thread different than the one that created
836 the Tcl interpreter. Patch by Robert Hancock.
838 - Issue #1520877: Now distutils.sysconfig reads $AR from the
839 environment/Makefile. Patch by Douglas Greiman.
841 - Issue #4285: Change sys.version_info to be a named tuple. Patch by
844 - Issue #1276768: The verbose option was not used in the code of
845 distutils.file_util and distutils.dir_util.
847 - Issue #5132: Fixed trouble building extensions under Solaris with
848 --enabled-shared activated. Initial patch by Dave Peterson.
850 - Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
852 - Issue #2047: shutil.move() could believe that its destination path was
853 inside its source path if it began with the same letters (e.g. "src" vs.
856 - Issue #4920: Fixed .next() vs .__next__() issues in the ABCs for
857 Iterator and MutableSet.
859 - Added the ttk module. See issue #2983: Ttk support for Tkinter.
861 - Issue #5021: doctest.testfile() did not create __name__ and
862 collections.namedtuple() relied on __name__ being defined.
864 - Backport importlib from Python 3.1. Only the import_module() function has
865 been backported to help facilitate transitions from 2.7 to 3.1.
867 - Issue #1885: distutils. When running sdist with --formats=tar,gztar
868 the tar file was overriden by the gztar one.
870 - Issue #4863: distutils.mwerkscompiler has been removed.
872 - Added a new itertools functions: combinations_with_replacement()
875 - Issue #5032: added a step argument to itertools.count() and
876 allowed non-integer arguments.
878 - Fix and properly document the multiprocessing module's logging
879 support, expose the internal levels and provide proper usage
882 - Issue #1672332: fix unpickling of subnormal floats, which was
883 producing a ValueError on some platforms.
885 - Issue #3881: Help Tcl to load even when started through the
886 unreadable local symlink to "Program Files" on Vista.
888 - Issue #4710: Extract directories properly in the zipfile module;
889 allow adding directories to a zipfile.
891 - Issue #3807: _multiprocessing build fails when configure is passed
892 --without-threads argument. When this occurs, _multiprocessing will
893 be disabled, and not compiled.
895 - Issue #5008: When a file is opened in append mode with the new IO library,
896 do an explicit seek to the end of file (so that e.g. tell() returns the
897 file size rather than 0). This is consistent with the behaviour of the
898 traditional 2.x file object.
900 - Issue #5013: Fixed a bug in FileHandler which occurred when the delay
903 - Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
904 which inherited from numbers.py which did not have __slots__ defined. The
905 numbers hierarchy now has its own __slots__ declarations.
907 - Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
908 for *nix machines for negative handles and large int handles. Without this check
909 it is possible to segfault the interpreter.
911 - Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
914 - Issue #1225107: inspect.isclass() returned True for instances with a custom
917 - Issue #3997: zipfiles generated with more than 65536 files could not be
918 opened with other applications.
920 - Issue #1162154: inspect.getmembers() now skips attributes that raise
921 AttributeError, e.g. a __slots__ attribute which has not been set.
923 - Issue #1696199: Add collections.Counter() for rapid and convenient
926 - Issue #3860: GzipFile and BZ2File now support the context manager protocol.
928 - Issue #4272: Add an optional argument to the GzipFile constructor to override
929 the timestamp in the gzip stream. The default value remains the current time.
930 The information can be used by e.g. gunzip when decompressing. Patch by
933 - Restore Python 2.3 compatibility for decimal.py.
935 - Issue #1702551: distutils sdist was not excluding VCS directories under
936 Windows. Inital solution by Guy Dalberto.
938 - The _tkinter module functions "createfilehandler", "deletefilehandler",
939 "createtimerhandler", "mainloop", "dooneevent" and "quit" have been
940 deprecated for removal in 3.x
942 - Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
943 to the decimal module.
945 - Issue #4812: add missing underscore prefix to some internal-use-only
946 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
948 - Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
949 the function is not a generator.
951 - Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
952 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
954 - Issue #4646: distutils was choking on empty options arg in the setup
955 function. Original patch by Thomas Heller.
957 - Fractions.from_float() no longer loses precision for integers too big to
960 - Issue #4790: The nsmallest() and nlargest() functions in the heapq module
961 did unnecessary work in the common case where no key function was specified.
963 - Issue #3767: Convert Tk object to string in tkColorChooser.
965 - Issue #3248: Allow placing ScrolledText in a PanedWindow.
967 - Issue #4444: Allow assertRaises() to be used as a context handler, so that
968 the code under test can be written inline if more practical.
970 - Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
971 works as expected in the interactive environment.
973 - Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
976 - Issue #4400: .pypirc default generated file was broken in distutils.
978 - Issue #4736: io.BufferedRWPair's closed property now functions properly.
980 - Issue #3954: Fix a potential SystemError in _hotshot.logreader error
983 - Issue #4574: fix a crash in io.IncrementalNewlineDecoder when a carriage
984 return encodes to more than one byte in the source encoding (e.g. UTF-16)
985 and gets split on a chunk boundary.
987 - Issue #4223: inspect.getsource() will now correctly display source code
988 for packages loaded via zipimport (or any other conformant PEP 302
989 loader). Original patch by Alexander Belopolsky.
991 - Issue #4201: pdb can now access and display source code loaded via
992 zipimport (or any other conformant PEP 302 loader). Original patch by
993 Alexander Belopolsky.
995 - Issue #4197: doctests in modules loaded via zipimport (or any other PEP
996 302 conformant loader) will now work correctly in most cases (they
997 are still subject to the constraints that exist for all code running
998 from inside a module loaded via a PEP 302 loader and attempting to
999 perform IO operations based on __file__). Original patch by
1000 Alexander Belopolsky.
1002 - Issues #4082 and #4512: Add runpy support to zipimport in a manner that
1003 allows backporting to maintenance branches. Original patch by
1004 Alexander Belopolsky.
1006 - Issue #4163: Use unicode-friendly word splitting in the textwrap functions
1007 when given an unicode string.
1009 - Issue #4616: TarFile.utime(): Restore directory times on Windows.
1011 - Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
1012 give correct results in the case where one argument is a quiet NaN
1013 and the other is a finite number that requires rounding.
1015 - Issue #1030250: Distutils created directories even when run with the
1018 - Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
1021 - Issue #4529: fix the parser module's validation of try-except-finally
1024 - Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
1025 not a malformed option.
1027 - Added the subprocess.check_output() convenience function to get output
1028 from a subprocess on success or raise an exception on error.
1030 - Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1031 support unusual filenames (such as those containing semi-colons) in
1032 Content-Disposition headers.
1034 - Issue #4384: Added logging integration with warnings module using
1035 captureWarnings(). This change includes a NullHandler which does nothing;
1036 it will be of use to library developers who want to avoid the "No handlers
1037 could be found for logger XXX" message which can appear if the library user
1038 doesn't configure logging.
1040 - Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
1043 - Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
1044 the ctypes module is not present.
1046 - FileIO's mode attribute now always includes ``"b"``.
1048 - Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
1050 - httplib.HTTPConnection.putheader() now accepts an arbitrary number of values
1051 for any header, matching what the documentation has claimed for a while.
1053 - Issue #3774: Fixed an error when create a Tkinter menu item without command
1056 - Fixed a modulefinder crash on certain relative imports.
1058 - Issue #4150: Pdb's "up" command now works for generator frames in post-mortem
1061 - Issue #4092: Return ArgInfo as promised in the documentation from
1062 inspect.getargvalues.
1064 - Issue #3935: Properly support list subclasses in bisect's C implementation.
1066 - Issue #4014: Don't claim that Python has an Alpha release status, in addition
1067 to claiming it is Mature.
1069 - Issue #4730: Fixed the cPickle module to handle correctly astral characters
1070 when protocol 0 is used.
1072 - Issue #1594: MacOS.GetCreatorAndType now always returns a big-endian result,
1073 to be consistent with Apple tools.
1075 - Issue #900949: plat-mac/videoreader.py no longer relies on a non-existing
1078 - Issue #16278952: plat-mac/videoreader.py now correctly imports MediaDescr
1080 - Issue #1737832 : plat-mac/EasyDialog.py no longer uses the broken aepack
1083 - Issue #1149804: macostools.mkdirs now even works when another process
1084 creates one of the needed subdirectories.
1086 - Issue #900506: added --no-zipimport flag to the bundlebuilder script
1088 - Issue #841800: bundlebuilder now works with 'python -O'
1090 - Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
1091 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
1093 - Issue #5104: The socket module now raises OverflowError when 16-bit port and
1094 protocol numbers are supplied outside the allowed 0-65536 range on bind()
1095 and getservbyport().
1097 - Issue #999042: The Python compiler now handles explict global statements
1098 correctly (should be assigned using STORE_GLOBAL opcode).
1100 - Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
1101 new arguments introduced in 2.5.
1103 - Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
1104 makeunicodedata.py and regenerated the Unicode database (This fixes
1105 u'\u1d79'.lower() == '\x00').
1107 - Windows locale mapping updated to Vista.
1112 - Ttk demos added in Demo/tkinter/ttk/
1114 - Issue #4677: add two list comprehension tests to pybench.
1119 - Issue 5390: Add uninstall icon independent of whether file
1120 extensions are installed.
1122 - Issue 5809: Specifying both --enable-framework and --enable-shared is
1123 an error. Configure now explicity tells you about this.
1125 - Issue #3585: Add pkg-config support. It creates a python-2.7.pc file
1126 and a python.pc symlink in the $(LIBDIR)/pkgconfig directory. Patch by
1129 - Issue #6094: Build correctly with Subversion 1.7.
1131 - Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
1133 - Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
1134 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
1136 - Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
1137 the order that backends for the dbm extension are checked.
1139 - Link the shared python library with $(MODLIBS).
1141 - Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
1143 - Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
1145 - Issue #4895: Use _strdup on Windows CE.
1147 - Issue #4472: "configure --enable-shared" now works on OSX
1149 - Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
1151 - Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
1153 - Issue #4289: Remove Cancel button from AdvancedDlg.
1155 - Issue #1656675: Register a drop handler for .py* files on Windows.
1157 - Issue #4120: Exclude manifest from extension modules in VS2008.
1159 - Issue #4091: Install pythonxy.dll in system32 again.
1161 - Issue #4018: Disable "for me" installations on Vista.
1163 - Issue #3758: Add ``patchcheck`` build target to .PHONY.
1165 - Issue #4204: Fixed module build errors on FreeBSD 4.
1170 - Issue #5954: Add a PyFrame_GetLineNumber() function to replace most uses of
1173 - Issue #5959: Add a PyCode_NewEmpty() function to create a new empty code
1174 object at a specified file, function, and line number.
1176 - Issue #1419652: Change the first argument to PyImport_AppendInittab() to
1177 ``const char *`` as the string is stored beyond the call.
1179 - Some PyBytes_* aliases have been removed because they don't exist in 3.x.
1181 - Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
1182 for negative arguments. Previously, it raised TypeError.
1184 - Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
1186 - Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
1187 the GIL is released, or owned by another thread.
1189 - Issue #4122: On Windows, fix a compilation error when using the
1190 Py_UNICODE_ISSPACE macro in an extension module.
1192 - Issue #4293: Py_AddPendingCall is now thread safe and can be used for
1193 asynchronous notifications to python from any thread. Documentation added.
1198 - Issue #1523: Remove deprecated overflow wrapping for struct.pack
1199 with an integer format code ('bBhHiIlLqQ'). Packing an out-of-range
1200 integer now consistently raises struct.error.
1202 - Issues #1530559, #1741130: Fix various struct.pack inconsistencies
1203 for the integer formats ('bBhHiIlLqQ'). In the following, '*'
1204 represents any of '=', '<', '>'.
1206 - Packing a float now always gives a Deprecation Warning.
1207 Previously it only warned for 'I', 'L', '*B', '*H', '*I', '*L'.
1209 - If x is not an int, long or float, then packing x will always
1210 result in struct.error. Previously an x with an __int__ method
1211 could be packed by 'b', 'B', 'h', 'H', 'i', 'l', '*b', '*h'
1212 ,'*i', '*l', and an x with a __long__ method could be packed by
1213 'q', 'Q', '*q', '*Q'; for x with neither __int__ nor __long__,
1214 TypeError used to be raised (with a confusing error message) for
1215 'I', 'L', '*B', '*H', '*I', '*L', and struct.error in other cases.
1217 - Issue #4873: Fix resource leaks in error cases of pwd and grp.
1219 - Issue #4751: For hashlib algorithms provided by OpenSSL, the Python
1220 GIL is now released during computation on data lengths >= 2048 bytes.
1222 - Issue #3745: Fix hashlib to always reject unicode and non buffer-api
1223 supporting objects as input no matter how it was compiled (built in
1224 implementations or external openssl library).
1226 - Issue #4397: Fix occasional test_socket failure on OS X.
1228 - Issue #4279: Fix build of parsermodule under Cygwin.
1230 - Issue #4051: Prevent conflict of UNICODE macros in cPickle.
1232 - Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
1234 - Issue #1040026: Fix os.times result on systems where HZ is incorrect.
1236 - Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
1239 - Issue #4365: Add crtassem.h constants to the msvcrt module.
1241 - Issue #4396: The parser module now correctly validates the with statement.
1243 - Issue #5228: Make functools.partial objects can now be pickled.
1248 - Issue #5450: Moved tests involving loading tk from Lib/test/test_tcl to
1249 Lib/lib-tk/test/test_tkinter/test_loadtk. With this, these tests demonstrate
1250 the same behaviour as test_ttkguionly (and now also test_tk) which is to
1251 skip the tests if DISPLAY is defined but can't be used.
1253 - Issue #6152: New option '-j'/'--multiprocess' for regrtest allows running
1254 regression tests in parallel, shortening the total runtime.
1256 - Issue #5354: New test support function import_fresh_module() makes
1257 it easy to import both normal and optimised versions of modules.
1258 test_heapq and test_warnings have been adjusted to use it, tests for
1259 other modules with both C and Python implementations in the stdlib
1260 can be adjusted to use it over time.
1262 - Fix test_warnings to no longer reset the warnings filter.
1264 - Fix test_logging to no longer reset the warnings filter.
1266 - Issue #5635: Fix running test_sys with tracing enabled.
1268 - regrtest no longer treats ImportError as equivalent to SkipTest. Imports
1269 that should cause a test to be skipped are now done using import_module
1270 from test support, which does the conversion.
1272 - Issue #5083: New 'gui' resource for regrtest.
1274 - Issue #5837: Certain sequences of calls to set() and unset() for
1275 support.EnvironmentVarGuard objects restored the environment variables
1276 incorrectly on __exit__.
1278 - Issue #2389: Array objects are now pickled in a portable manner.
1281 What's New in Python 2.6 final
1282 ==============================
1284 *Release date: 01-Oct-2008*
1289 - Issue #3967: Fixed a crash in the count() and find() methods of string-like
1290 objects, when the "start" parameter is a huge value.
1292 - Issue #3965: Fixed a crash on Windows when open() is given an invalid
1293 filename or mode, and the filename is a unicode string.
1295 - Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
1300 - Issue #3965: Allow repeated calls to turtle.Screen, by making it a
1301 true singleton object.
1303 - Issue #3895: It was possible to crash the interpreter when an external timer
1304 was used with cProfile that returned an object that could not be converted
1307 - Issue #3950: Made turtle respect scale factors.
1309 - Issue #3547: Fixed ctypes structures bitfields of varying integer
1312 - Issue #3879: A regression in urllib.getproxies_enviroment was fixed.
1314 - Issue #3863: Disabled a unit test of fork being called from a thread
1315 when running on platforms known to exhibit OS bugs when attempting that.
1320 - Bug #3989: Package the 2to3 script (as 2to3.py) in the Windows
1323 - Bug #3887: Package x64 version of CRT for AMD64 Windows binaries.
1326 What's New in Python 2.6 release candidate 2?
1327 =============================================
1329 *Release date: 17-Sep-2008*
1337 - Security Issue #2: imageop did not validate arguments correctly and could
1338 segfault as a result.
1340 - Issue #3886: Possible integer overflows in the _hashopenssl module were
1346 - Issue #3850: recursion tests in Misc/find_recursion_limit.py can raise
1347 AttributeError instead of RuntimeError, depending in which C API call
1348 exactly the recursion limit is exceeded. Consequently, both exception types
1349 are caught and silenced.
1354 - Issue #3617: Include a licensing statement regarding the Microsoft
1355 C runtime in the Windows installer.
1358 What's New in Python 2.6 release candidate 1?
1359 =============================================
1361 *Release date: 12-Sep-2008*
1366 - Issue #3642: Suppress warning in obmalloc when size_t is larger than uint.
1368 - Issue #3743: In a few places, PY_FORMAT_SIZE_T was incorrectly used with
1369 PyString_FromFormat or PyErr_Format to display size_t values. The macro
1370 PY_FORMAT_SIZE_T is designed to select the correct format for the OS
1371 ``printf`` function, whereas PyString_FromFormat has an independent
1372 implementation and uses "%zd" on all platforms for size_t values.
1373 This makes a difference on win64, where ``printf`` needs "%Id" to display
1376 - Issue #3634: _weakref.ref(Exception).__init__() gave invalid return value on
1379 - Issue #3777: long() applied to a float object now always return a long
1380 object; previously an int would be returned for small values. the __long__
1381 method is allowed to return either an int or a long, but the behaviour of
1382 float objects should not change to respect backward compatibility.
1384 - Issue #3751: str.rpartition would perform a left-partition when called with
1387 - Issue #3683: Fix compilation when --without-threads is given.
1389 - Issue #3668: Fix a memory leak with the "s*" argument parser in
1390 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
1391 was correctly parsed but parsing of subsequent arguments failed.
1393 - Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
1394 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
1395 mechanism. In the process, fix a bug where isinstance() and issubclass(),
1396 when given a tuple of classes as second argument, were looking up
1397 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
1400 - Fix crashes on memory allocation failure found with failmalloc.
1402 - Fix memory leaks found with valgrind and update suppressions file.
1404 - Fix compiler warnings in opt mode which would lead to invalid memory reads.
1406 - Fix problem using wrong name in decimal module reported by pychecker.
1408 - Silenced another compiler warning about a used but not defined
1409 function 'stringlib_contains_obj'.
1411 - Added warnings on the use of ``__getslice__``, ``__setslice__``, or
1414 - Issue #3678: Correctly pass LDFLAGS and LDLAST to the linker on shared
1415 library targets in the Makefile.
1417 - Issue #1204: The configure script now tests for additional libraries
1418 that may be required when linking against readline. This fixes issues
1419 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
1424 - Aliased PyObject_Bytes to PyObject_Str.
1429 - Issue #3640: Pickling a list or a dict uses less local variables, to reduce
1430 stack usage in the case of deeply nested objects.
1432 - Issue #3629: Fix sre "bytecode" validator for an end case.
1434 - Issue #3811: The Unicode database was updated to 5.1.
1436 - Issue #3781: Further warnings.catch_warnings() cleanup to prevent
1437 silent misbehaviour when a single instance is nested in multiple
1438 with statements, or when the methods are invoked in the wrong order.
1440 - Issue #3809: Fixed spurious 'test.blah' file left behind by test_logging.
1442 - Issue #3781: Clean up the API for warnings.catch_warnings() by having it
1443 return a list or None rather than a custom object.
1445 - Issue #1638033: Cookie.Morsel gained the httponly attribute.
1447 - Issue #3535: zipfile couldn't read some zip files larger than 2GB.
1449 - Issue #3776: Deprecate the bsddb package for removal in 3.0.
1451 - Issue #3762: platform.architecture() fails if python is lanched via
1454 - Issue #3772: Fixed regression problem in StreamHandler.emit().
1456 - Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
1457 to the urlparse one. Added a PendingDeprecationWarning in the old
1458 module, it will be deprecated in the future.
1460 - Issue #2562: Fix distutils PKG-INFO writing logic to allow having
1461 non-ascii characters and Unicode in setup.py meta-data.
1463 - Issue #3726: Allow spaces in separators in logging configuration files.
1465 - Issue #3719: platform.architecture() fails if there are spaces in the
1466 path to the Python binary.
1468 - Issue 3602: Moved test.test_support.catch_warning() to
1469 warnings.catch_warnings() along with some API cleanup. Expanding the tests
1470 for catch_warnings() also led to an improvement in the raising of a
1471 DeprecationWarning related to warnings.warn_explicit().
1473 - The deprecation warnings for the old camelCase threading API were removed.
1475 - logging: fixed lack of use of encoding attribute specified on a stream.
1477 - Silenced a trivial compiler warning in the sqlite module.
1479 - Fixed two format strings in the _collections module.
1481 - Issue #3703: _fileio.FileIO gave unhelpful error message when trying to open a
1484 - Issue #3708: os.urandom no longer goes into an infinite loop when passed a
1485 non-integer floating point number.
1487 - Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
1493 - Issue #4301: Patch the logging module to add processName support, remove
1494 _check_logger_class from multiprocessing.
1496 - Issue #2975: When compiling several extension modules with Visual Studio 2008
1497 from the same python interpreter, some environment variables would grow
1500 - Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
1501 exploitation of poor argument checking.
1503 - sqlite3: Changed docstring of iterdump() to mark method as "Non-standard".
1505 - Issue #3103: Reduced globals symbols used by sqlite3 module and made sure all
1506 remaining ones have "pysqlite_" prefix.
1508 - Issue #3846: Release the GIL during sqlite3_prepare calls. This improves
1509 concurrent access to the same SQLite database from multiple
1515 - Issue #3781: Add test.test_support.check_warnings() as a convenience
1516 wrapper for warnings.catch_warnings() that makes it easier to check
1517 that expected warning messages are being reported.
1519 - Issue #3796: Some tests functions were not enabled in test_float.
1521 - Issue #3768: Move test_py3kwarn over to the new API for catch_warnings().
1526 - Issue #3833: Use a different upgrade code for Win64 installers.
1528 - Issue #2271: Set SecureCustomProperties so that installation will properly
1529 use the TARGETDIR even for unprivileged users.
1531 - Allow passing the MSI file name to merge.py.
1533 - Issue #3758: Rename the 'check' target to 'patchcheck' so as to not clash
1534 with GNU build target guidelines.
1537 What's New in Python 2.6 beta 3?
1538 ================================
1540 *Release date: 20-Aug-2008*
1545 - Issue #1878: Remove Py_TPFLAGS_HAVE_VERSION_TAG from
1546 Py_TPFLAGS_DEFAULT when not building the core. This means 3rd party
1547 extensions do not automatically benefit from the class attribute
1548 cache; they will have to explicitly add Py_TPFLAGS_HAVE_VERSION_TAG
1549 to their tp_flags field if they care. This is a backwards
1550 compatibility feature; in 3.0, all types will use the cache by
1553 - Keyword arguments can now follow starred arguments. (``f(a, *args,
1554 keyword=23)`` is now valid syntax.)
1556 - ctypes function pointers that are COM methods have a boolean True
1559 - Issue #3139: Make buffer-interface thread-safe wrt. PyArg_ParseTuple,
1560 by denying s# to parse objects that have a releasebuffer procedure,
1563 - Issue #3537: Fix an assertion failure when an empty but presized dict
1564 object was stored in the freelist.
1566 - Issue #1481296: Make long(float('nan')) and int(float('nan')) raise
1567 ValueError consistently across platforms.
1569 - Issue #3479: On platforms where sizeof(int) is smaller than sizeof(long)
1570 (64bit Unix, for example), unichr() would truncate its argument and return
1571 u'\x00' for unichr(2**32). Now it properly raises an OverflowError.
1573 - Apply security patches from Apple.
1575 - Issue #2542: Now that issubclass() may call arbitrary code, ensure that
1576 PyErr_ExceptionMatches returns 0 when an exception occurs there.
1578 - Issue #1819: function calls with several named parameters are now on
1579 average 35% faster (as measured by pybench).
1581 - Issue #2378: An unexpected UnboundLocalError or NameError could appear when
1582 the python debugger steps into a class statement: the free variables (local
1583 variables defined in an outer scope) would be deleted from the outer scope.
1585 - Issue #2620: Overflow checking when allocating or reallocating memory
1586 was not always being done properly in some python types and extension
1587 modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
1588 all been updated to perform better checks and places in the code that
1589 would previously leak memory on the error path when such an allocation
1590 failed have been fixed.
1595 - Issue #3612: Added some missing basic types in ctypes.wintypes.
1597 - The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
1598 symtable.Symbol have been deprecated for removal in 3.0 and the next release.
1600 - Issue #2234: distutils failed for some versions of the cygwin compiler. The
1601 version reported by these tools does not necessarily follow the python
1602 version numbering scheme, so the module is less strict when parsing it.
1604 - Issue #2235: Added Py3k warnings for types which will become unhashable
1605 under the stricter __hash__ inheritance rules in 3.0. Several types
1606 which did not meet the rules for hash invariants and were already
1607 unhashable in 3.0 have now been explicitly flagged as unhashable in
1608 2.6 as well (collections.Mapping, collections.Set, unittest.TestSuite,
1609 xml.dom.minidom.NamedNodeMap, numbers.Number, UserList.UserList)
1611 - Update __all__ for cookielib, csv, os, urllib2, and weakref to include things
1612 imported into the module but exposed as part of the module's API.
1614 - Remove an unneeded import of abc.ABCMeta from 'inspect'.
1616 - Remove unneeded imports of 'sys' and 'warnings' from 'io'.
1618 - Remove unneeded imports of 'warnings' from shelve, filecmp, and dummy_thread.
1620 - Issue #3575: Incremental decoder's decode function now takes bytearray
1621 by using 's*' instead of 't#'.
1623 - Issue #2222: Fixed reference leak when occurred os.rename()
1624 fails unicode conversion on 2nd parameter. (windows only)
1626 - Issue 2464. urllib2 now supports a malformation in the URL received
1629 - Silence the DeprecationWarning raised when importing mimetools in
1630 BaseHTTPServer, cgi (and rfc822), httplib.
1632 - Issue #2776: fixed small issue when handling an URL with double slash
1633 after a 302 response in the case of not going through a proxy.
1635 - Issue #2676: in the email package, content-type parsing was hanging on
1636 pathological input because of quadratic or exponential behaviour of a
1639 - Issue #3476: binary buffered reading through the new "io" library is now
1642 - Silence the DeprecationWarning of rfc822 when it is imported by mimetools
1643 since mimetools itself is deprecated. Because modules are cached, all
1644 subsequent imports of rfc822 will not raise a visible DeprecationWarning.
1646 - Issue #3134: shutil referenced undefined WindowsError symbol.
1648 - Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
1649 menu entries were not deleted.
1651 - Copied the implementation of reduce() to _functools.reduce() to have a
1652 version that did not raise a DeprecationWarning under -3.
1654 - Issue #3205: When iterating over a BZ2File fails allocating memory, raise
1655 a MemoryError rather than silently stop the iteration.
1657 - Issue #3487: sre "bytecode" validator. Passing invalid "re-bytecode"
1658 to _sre.compile() will now be rejected. This should not affect anybody
1659 since the re.compile() function never generates invalid re-bytecode.
1661 - Issue #3436: Make csv.DictReader's fieldnames attribute a property so that
1662 upon first access it can be automatically initialized from the csv file if
1663 it wasn't initialized during instantiation.
1665 - Issue #2338: Create imp.reload() to help with transitioning to Python 3.0 as
1666 the reload() built-in has been removed.
1668 - Changed code in the following modules/packages to remove warnings raised
1669 while running under the ``-3`` flag: aifc, asynchat, asyncore, bdb, bsddb,
1670 ConfigParser, cookielib, csv, difflib, distutils, DocXMLRPCServer, email,
1671 filecmp, fileinput, inspect, logging, modulefinder, pdb, pickle, profile,
1672 pstats, pydoc, re, rlcompleter, SimpleXMLRPCServer, shelve, socket,
1673 subprocess, sqlite3, tarfile, Tkinter, test.test_support, textwrap,
1674 threading, tokenize, traceback, urlparse, wsgiref, xml, xmlrpclib.
1676 - Issue #3039: Fix tarfile.TarFileCompat.writestr() which always
1677 raised an AttributeError.
1679 - Issue #2523: Fix quadratic behaviour when read()ing a binary file without
1680 asking for a specific length. This problem only affected files opened
1681 using the new "io" module, not the built-in open() function.
1683 - Issue #3449: Update decimal module to use most recent specification
1684 (v. 1.68) and tests (v. 2.58) from IBM.
1686 - Issue 3437: Bug fix in robotparser parsing of Allow: lines.
1688 - Issue 1592: Improve error reporting when operations are attempted
1691 - Deprecate the "ast" parser function aliases.
1693 - Issue #3120: On 64-bit Windows the subprocess module was truncating handles.
1695 - Issue #3303: Fix a crash in locale.strcoll() when calling it with
1698 - Issue #3302: Fix several crashes when calling locale's gettext functions
1699 with None arguments.
1701 - Issue #3389: Allow resolving dotted names for handlers in logging
1702 configuration files.
1704 - Deprecate the sunaudio module for removal in Python 3.0.
1706 - Issue #3394: zipfile.writestr sets external attributes when passed a
1707 file name rather than a ZipInfo instance, so files are extracted with
1708 mode 0600 rather than 000 under Unix.
1710 - Issue #1857: subprocess.Popen.poll gained an additional _deadstate keyword
1711 argument in python 2.5, this broke code that subclassed Popen to include its
1712 own poll method. Fixed my moving _deadstate to an _internal_poll method.
1717 - Generate the PatternGrammar pickle during "make install".
1722 - Issue #2235: the C API function PyObject_HashNotImplemented and its
1723 interaction with the tp_hash slot (added in 2.6b2) are now documented
1725 - Issue #643841: The language reference now provides more detailed
1726 coverage of the lookup process for special methods. The disclaimers
1727 regarding lack of coverage of new-style classes have also been
1728 removed, since the coverage is now fairly reasonable.
1731 What's New in Python 2.6 beta 2?
1732 ================================
1734 *Release date: 17-Jul-2008*
1739 - Issue #3156: Fix inconsistent behavior of the bytearray type: all
1740 its methods now allow for items objects that can be converted to
1741 an integer using operator.index().
1743 - Issue #3360: Fix incorrect parsing of '020000000000.0', which
1744 produced a ValueError instead of giving the correct float.
1746 - Issue #3083: Add alternate (#) formatting for bin, oct, hex output
1747 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
1749 - Issue #3008: the float type has a new instance method 'float.hex'
1750 and a new class method 'float.fromhex' to convert floating-point
1751 numbers to and from hexadecimal strings, respectively.
1753 - Issue #2235: __hash__ is once again inherited by default. To allow
1754 collections.Hashable to remain meaningful in the presence of the
1755 default hash implementation (object.__hash__), it is now possible
1756 to explicit block inheritance of hash by setting __hash__=None at
1757 the Python level, or tp_hash=PyObject_HashNotImplemented at the C
1760 - Issue #3221: Issue a RuntimeWarning instead of raising SystemError if
1761 the parent module cannot be found while performing an absolute import.
1762 This means that an incorrectly defined __package__ attribute will
1763 now only prevent relative imports in that module rather than causing
1764 all imports from that module to fail.
1766 - Issue #2517: Allow unicode messages in Exceptions again by correctly
1767 bypassing the instance dictionary when looking up __unicode__ on
1770 - Issue #3242: Fix a crash inside the print statement, if sys.stdout is
1771 set to a custom object whose write() method happens to install
1772 another file in sys.stdout.
1774 - Issue #3088: Corrected a race condition in classes derived from
1775 threading.local: the first member set by a thread could be saved in
1776 another thread's dictionary.
1778 - Issue #3004: Minor change to slice.indices(): the start and stop
1779 arguments are now treated identically, making the behaviour easier
1780 to describe and understand. For example, slice(None, -10,
1781 1).indices(9) now returns (0, 0, 1) instead of (0, -1, 1), and
1782 slice(None, 10, -1).indices(10) returns (9, 9, -1) instead of (9,
1785 - Issue #3219: Calling a function with repeated keyword arguments,
1786 f(a=2, a=23), would not cause a syntax error. This was a regression
1787 from 2.4 caused by the switch to the new compiler.
1789 - Issue #2862: Make int and float freelist management consistent with
1790 other freelists. Changes their CompactFreeList apis into
1791 ClearFreeList apis and calls them via gc.collect().
1796 - Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
1797 api functions without holding the GIL, which could lead to a fatal
1798 error when they failed.
1800 - Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
1802 - Issue #3395: fix reference in test_multiprocessing to old debugInfo method
1804 - Issue #3312: Fix two crashes in sqlite3.
1806 - Issue #1608818: Fix misbehavior in os.listdir() if readdir() fails.
1808 - Issue #3125: Remove copy_reg in multiprocessing and replace it with
1809 ForkingPickler.register() to resolve conflict with ctypes.
1811 - Issue #3090: Fixed ARCHFLAGS parsing on OS/X
1813 - Issue #3313: Fixed a crash when a failed dlopen() call does not set
1814 a valid dlerror() message.
1816 - Issue #3258: Fixed a crash when a ctypes POINTER type to an
1817 incomplete structure was created.
1819 - Issue #3339: dummy_thread.acquire() should not return None.
1821 - Issue #3285: Fractions from_float() and from_decimal() accept Integral arguments.
1823 - Issue #3301: Bisect module behaved badly when lo was negative.
1825 - Issue #839496: SimpleHTTPServer used to open text files in text mode. This is
1826 both unnecessary (HTTP allows text content to be sent in several forms) and
1827 wrong because the actual transmitted size could differ from the
1828 content-length. The problem had been corrected in the 2.4 branch, but never
1831 - Issue #2663: add filtering capability to shutil.copytree().
1833 - Issue #1622: Correct interpretation of various ZIP header fields.
1835 - Issue #1526: Allow more than 64k files to be added to Zip64 file.
1837 - Issue #1746: Correct handling of zipfile archive comments (previously
1838 archives with comments over 4k were flagged as invalid). Allow writing
1839 Zip files with archives by setting the 'comment' attribute of a ZipFile.
1841 - Issue #449227: The rlcompleter module now adds "(" to callable objects
1844 - Issue #3190: Pydoc now hides the automatic module attribute __package__ (the
1845 handling is now the same as that of other special attributes like __name__).
1847 - Issue #2885 (partial): The urllib.urlopen() function has been deprecated for
1848 removal in Python 3.0 in favor of urllib2.urlopen().
1850 - Issue #2113: Fix error in subprocess.Popen if the select system call is
1851 interrupted by a signal.
1853 - Issue #3309: Fix bz2.BZFile iterator to release its internal lock
1854 properly when raising an exception due to the bz2file being closed.
1855 Prevents a deadlock.
1857 - Issue #3094: httplib.HTTPSConnection Host: headers no longer include the
1858 redundant ":443" port number designation when the connection is using the
1859 default https port (443).
1861 - Issue #874900: after an os.fork() call the threading module state is cleaned
1862 up in the child process to prevent deadlock and report proper thread counts
1863 if the new process uses the threading module.
1868 - test.test_support.catch_warning now keeps track of all warnings it sees
1869 and is now better documented. Explicit unit tests for this context manager
1870 have been added to test_warnings.
1875 - Issue #3215: Build sqlite3 as sqlite3.dll, not sqlite3.pyd.
1881 - Document that robotparser has been renamed to urllib.robotparser in
1884 - Document that urlparse has been renamed to urllib.parse in Python 3.0.
1886 - Document that urllib2 is split across multiple modules and renamed in
1889 - Document that urllib is split across multiple modules and renamed in
1893 What's New in Python 2.6 beta 1?
1894 ================================
1896 *Release date: 18-June-2008*
1901 - Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
1902 argument being anything other than a dict or None. Also fixed a bug in error
1903 handling when 'message' and 'category' were both set to None, triggering a
1906 - Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
1907 holds the last (strong) reference to its referent.
1909 - Add future_builtins.ascii().
1911 - Several set methods now accept multiple arguments: update(), union(),
1912 intersection(), intersection_update(), difference(), and difference_update().
1914 - Issue #2898: Added sys.getsizeof() to retrieve size of objects in bytes.
1916 - New environment variable PYTHONIOENCODING.
1918 - Patch #2488: Add sys.maxsize.
1920 - Issue #2353: file.xreadlines() now emits a Py3k warning.
1922 - Issue #2863: generators now have a ``gen.__name__`` attribute that
1923 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
1924 ``func.func_code.co_name``. The repr() of a generator now also
1927 - Issue #2831: enumerate() now has a ``start`` argument.
1929 - Issue #2801: fix bug in the float.is_integer method where a
1930 ValueError was sometimes incorrectly raised.
1932 - Issue #2790: sys.flags was not properly exposing its bytes_warning
1935 - Issue #2196: hasattr() now lets exceptions which do not inherit
1936 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
1939 - Added checks for integer overflows, contributed by Google. Some are
1940 only available if asserts are left in the code, in cases where they
1941 can't be triggered from Python code.
1946 - Issue #1179: [CVE-2007-4965] Integer overflow in imageop module.
1948 - Issue #3116: marshal.dumps() had quadratic behavior for strings > 32Mb.
1950 - Issue #2138: Add factorial() to the math module.
1952 - The heapq module does comparisons using LT instead of LE. This
1953 makes its implementation match that used by list.sort().
1955 - Issue #2819: add full-precision summation function to math module,
1956 based on Hettinger's ASPN Python Cookbook recipe.
1958 - Issue #2592: delegate nb_index and the floor/truediv slots in
1961 - Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
1964 - Support for Windows 9x has been removed from the winsound module.
1966 - bsddb module updated to version 4.7.3.
1967 http://www.jcea.es/programacion/pybsddb.htm#bsddb3-4.7.3. This
1968 code should be compatible with Python 3.0.
1970 - Issue #2858: Fix potential memory corruption when
1971 bsddb.db.DBEnv.lock_get and other bsddb.db object constructors
1972 raised an exception.
1974 - Issue #2669: bsddb/__init__.py iteration no longer silently fails when
1975 the database has changed size during iteration. It now raises a
1976 RuntimeError in the same manner as a dictionary.
1978 - Issue #2870: cmathmodule.c compile error.
1980 - Added a threading.Thread.ident property.
1985 - logging.config: Removed out-of-date comment in _install_handlers and
1986 used issubclass in place of equality comparison of classes.
1988 - Issue #2722: Now the os.getcwd() supports very long path names.
1990 - Issue #2888: Fixed the behaviour of pprint when working with nested
1991 structures, to match the behaviour of 2.5 and 3.0 (now follows the common
1994 - Issue #1817: cgi now correctly handles the querystring on POST requests
1996 - Issue #3136: fileConfig()'s disabling of old loggers is now conditional via
1997 an optional disable_existing_loggers parameter, but the default value is
1998 such that the old behaviour is preserved. Thanks to Leandro Lucarella for
2001 - Issue #3126: StreamHandler and FileHandler check before calling "flush" and
2002 "close" that the stream object has these, using hasattr (thanks to bobf for
2005 - Issue #2912: platform.uname now tries to determine unknown information even if
2008 - The rfc822 module has been deprecated for removal in 3.0.
2010 - The mimetools module has been deprecated for removal in 3.0.
2012 - The ctypes.byref function now takes an optional second parameter
2013 which allows to specify an offset in bytes for the constructed
2014 pointer-like object.
2016 - Added the ast module.
2018 - Added the multiprocessing module, PEP 371.
2020 - Factored out the indentation cleaning from inspect.getdoc() into
2021 inspect.cleandoc() to ease standalone use.
2023 - Issue #1798: Add ctypes calling convention that allows safe access
2026 - Issue #2404: ctypes objects support the new pep3118 buffer interface.
2028 - Patch #2125: Add GetInteger and GetString methods for
2029 msilib.Record objects.
2031 - Issue #2782: The datetime module's strftime methods now accept
2032 unicode format strings just as time.strftime always has.
2034 - The sgmllib and htmllib modules have been deprecated for removal
2037 - Issue #3011: locale module alias table was updated to the latest
2038 version from the X.org locale.alias file.
2040 - Issue #1797 (partial fix): ctypes NULL function pointers have a
2041 False boolean value now.
2043 - Issue #2985: Allow 64-bit integer responses (``<i8>``) in XMLRPC
2046 - Issue #2877: The UserString.MutableString class has been removed in
2049 - Do not close external file objects passed to tarfile.open(mode='w:bz2')
2050 when the TarFile is closed.
2052 - Issue #2959: For consistency with other file-like objects, gzip's
2053 GzipFile.close() can now be called multiple times without raising
2056 - Issue #1390: Raise ValueError in toxml when an invalid comment would
2057 otherwise be produced.
2059 - Issue #2914: TimedRotatingFileHandler now takes an optional keyword
2060 argument "utc" to use UTC time rather than local time.
2062 - Issue #2929: TimedRotatingFileHandler was using the wrong path when
2063 deleting old log files (filename only instead of full path).
2065 - Issue #1775025: You can now specify zipfile members to open(),
2066 read() or extract() via a ZipInfo instance. This allows handling
2067 duplicate filenames in zipfiles.
2069 - Issue #961805: Fix Text.edit_modified() in Tkinter.
2071 - Issue #1793: Function ctypes.util.find_msvcrt() added that returns
2072 the name of the C runtime library that Python uses.
2073 ctypes.util.find_library(name) now call this function when name is
2076 - The statvfs module has been deprecated for removal in Python 3.0.
2078 - The sunaudiodev and SUNAUDIODEV modules have been deprecated for
2079 removal in Python 3.0.
2081 - The WAIT module from IRIX has been deprecated for removal in Python
2084 - The torgb module from IRIX has been deprecated for removal in Python
2087 - The SV module from IRIX has been deprecated for removal in Python
2090 - The readcd module from IRIX has been deprecated for removal in
2093 - The panelparser module from IRIX has been deprecated for removal in
2096 - The panel module from IRIX has been deprecated for removal in Python
2099 - The jpeg module from IRIX has been deprecated for removal in Python
2102 - The IOCTL module from IRIX has been deprecated for removal in Python
2105 - The IN module from IRIX has been deprecated for removal in Python
2108 - The imgfile module from IRIX has been deprecated for removal in
2111 - The GLWS module from IRIX has been deprecated for removal in Python
2114 - The GET module from IRIX has been deprecated for removal in Python
2117 - The fm module from IRIX has been deprecated for removal in Python
2120 - The FL, flp, and fl modules from IRIX have been deprecated for
2121 removal in Python 3.0.
2123 - The FILE module on IRIX has been deprecated for removal in Python
2126 - The ERRNO module on IRIX has been deprecated for removal in Python
2129 - The DEVICE, GL, gl, and cgen modules (which indirectly includes
2130 cgensupport) have been deprecated for removal in Python 3.0.
2132 - The CL, CL_old, and cl modules for IRIX have been deprecated for
2133 removal in Python 3.0.
2135 - The cdplayer module for IRIX has been deprecated for removal in
2138 - The cddb module for IRIX has been deprecated for removal in Python
2141 - The cd and CD modules for IRIX have been deprecated for removal in
2144 - The al and AL modules for IRIX have been deprecated for removal in
2147 - Issue #1713041: fix pprint's handling of maximum depth.
2149 - The timing module has been deprecated for removal in Python 3.0.
2151 - The sv module has been deprecated for removal in Python 3.0.
2153 - The multifile module has been deprecated as per PEP 4.
2155 - The imageop module has been deprecated for removal in Python 3.0.
2157 - Issue #2250: Exceptions raised during evaluation of names in
2158 rlcompleter's ``Completer.complete()`` method are now caught and
2161 - Issue #2659: Added ``break_on_hyphens`` option to textwrap
2164 - The mhlib module has been deprecated for removal in Python 3.0.
2166 - The linuxaudiodev module has been deprecated for removal in Python
2169 - The ihooks module has been deprecated for removal in Python 3.0.
2171 - The fpformat module has been deprecated for removal in Python 3.0.
2173 - The dl module has been deprecated for removal in Python 3.0.
2175 - The Canvas module has been deprecated for removal in Python 3.0.
2177 - The compiler package has been deprecated for removal in Python 3.0.
2179 - The Bastion and rexec modules have been deprecated for removal in
2182 - The bsddb185 module has been deprecated for removal in Python 3.0.
2184 - The pure module has been deprecated for removal in Python 3.0.
2186 - Issue #2487: change the semantics of math.ldexp(x, n) when n is too
2187 large to fit in a C long. ldexp(x, n) now returns a zero (with
2188 suitable sign) if n is large and negative; previously, it raised
2191 - The toaiff module has been deprecated for removal in Python 3.0.
2193 - The test.testall module has been deprecated for removal in Python
2196 - The new module has been deprecated for removal in Python 3.0.
2198 - The user module has been deprecated for removal in Python 3.0.
2200 - The stringold module has been deprecated for removal in Python 3.0.
2202 - The mutex module has been deprecated for removal in Python 3.0.
2204 - The imputil module has been deprecated for removal in Python 3.0.
2206 - test.test_support.catch_warning() gained a 'record' argument.
2208 - os.path.walk is deprecated in favor of os.walk.
2210 - pdb gained the "until" command.
2212 - The Mac Modules (including Carbon) have been deprecated for removal
2215 - Library: on MacOS X you can now set ``ARCHFLAGS`` in the shell
2216 environment to control the '-arch' flags that are used to build
2217 an extension. This was added for compatibility with Apple's build
2220 - The bundled OSX-specific copy of libbffi is now in sync with the version
2221 shipped with PyObjC 2.0 and includes support for x86_64 and ppc64 platforms.
2223 - The threading module gained aliases for names that will be removed in the
2229 - The Windows installer now includes Tk 8.5, bzip2 1.0.5, and SQLite 3.5.9.
2231 - Patch #1722225: Support QNX 6.
2233 - ``Lib/lib-old`` is now added to sys.path.
2235 - On MacOS X it is now possible to install the framework in 64-bit
2236 mode or even as a 4-way universal binary (that is, PPC, i386,
2237 PPC64 and x86_64 support in one binary).
2239 This is controlled by the configure argument ``--with-universal-archs``:
2241 - ``--with-universal-archs=all``: install 4-way universal
2243 - ``--with-universal-archs=32-bit``: install 2-way universal, 32-bit (the default)
2245 - ``--with-universal-archs=64-bit``: install 2-way universal, 64-bit
2247 This option should be used in combination with ``--enable-universalsdk=``.
2249 NOTE: 64-bit and 4-way builds are only suppported on Mac OS X 10.5 (or later).
2255 - Add ``PyType_Modified()`` as a public API to clear the type cache.
2257 - The PyBytes functions have been renamed to PyByteArray.
2259 - The PyString functions have been renamed to PyBytes. A batch of
2260 defines were added so that the linker still sees the original
2264 What's New in Python 2.6 alpha 3?
2265 =================================
2267 *Release date: 08-May-2008*
2272 - Issue #2719: backported the ``next()`` builtin from Python 3.
2274 - Issue #2681: The octal literal ``0o8`` was incorrecly acctepted. Now
2275 it properly raises a SyntaxError.
2277 - Issue #2617: Reserved -J and -X arguments for Jython, IronPython and
2278 other implementations of Python.
2280 - Implemented PEP 370: Per user site-packages directory.
2285 - Issue #2670: Fix a failure in urllib2.build_opener(), when passed
2286 two handlers that derive the same default base class.
2288 - Added kill, terminate and send_signal(sig) to subprocess.Popen.
2290 - Added phase(z) -> phi, polar(z) -> r, phi and rect(r, phi) -> z to
2293 - Four new methods were added to the math and cmath modules: acosh,
2294 asinh, atanh and log1p.
2296 - zlib.decompressobj().flush(value) no longer crashes the interpreter
2297 when passed a value less than or equal to zero.
2299 - Issue #1631171: Re-implement the 'warnings' module in C (the
2300 original Python code has been kept as backup). This will allow for
2301 using the 'warning's machinery in such places as the parser where
2302 use of pure Python code is not possible. Both the ``showarning()``
2303 and ``formatwarning()`` gain an optional 'line' argument which is
2304 not called by default for backwards-compatibility reasons. Setting
2305 ``warnings.showwarning()`` to an implementation that lacks support
2306 for the ``line`` argument will raise a DeprecationWarning.
2311 - The audiodev module has been deprecated for removal in Python 3.0.
2313 - Issue #2750: Add the 'json' package. Based on simplejson 1.9 and
2314 contributed by Bob Ippolito.
2316 - Issue #1734346: Support Unicode file names for zipfiles.
2318 - Issue #2581: distutils: Vista UAC/elevation support for
2321 - Issue #2635: Fix bug in 'fix_sentence_endings' textwrap.fill option,
2322 where an extra space was added after a word containing (but not
2323 ending in) '.', '!' or '?'.
2325 - Add from_buffer() and from_buffer_copy() class methods to ctypes
2328 - Issue #2682: ctypes callback functions no longer contain a cyclic
2329 reference to themselves.
2331 - The getpass module has been improved on Unix. It now uses /dev/tty
2332 by default and uses stderr instead of stdout. A GetPassWarning is
2333 issued when input echo cannot be controlled.
2335 - Issue #2014: Allow XML-RPC datetime objects to have dates before
2338 - Issue #2439: Added new function pkgutil.get_data(), which is a
2339 convenience wrapper for the PEP 302 get_data() API.
2341 - Issue #2616: The ctypes.pointer() and ctypes.POINTER() functions are
2342 now implemented in C for better performance.
2344 - Issue #2408: The ``_types`` module, which was used as in
2345 implementation detail of the public ``types`` module, has been
2346 removed and replaced by pure python code.
2348 - Issue #2513: distutils on Windows is now capable of cross-compiling
2349 extension modules between 32 and 64 bit platforms. See the distutls
2350 build documentation for more information.
2352 - Issue #815646: Individual file objects may now be used from multiple
2353 threads at once without fear of crashing the Python interpreter. If
2354 file.close() is called while an object is in use by another thread
2355 an IOError exception will be raised and the file will not be closed.
2357 - The bundled libffi copy is now in sync with the recently released
2358 libffi3.0.5 version, apart from some small changes to
2359 Modules/_ctypes/libffi/configure.ac.
2361 - Issue #2385: distutils.core.run_script() makes __file__ available,
2362 so the controlled environment will more closely mirror the typical
2363 script environment. This supports setup.py scripts that refer to
2369 - Issue #2550: The approach used by client/server code for obtaining
2370 ports to listen on in network-oriented tests has been refined in an
2371 effort to facilitate running multiple instances of the entire
2372 regression test suite in parallel without issue.
2373 test_support.bind_port() has been fixed such that it will always
2374 return a unique port -- which wasn't always the case with the
2375 previous implementation, especially if socket options had been set
2376 that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The
2377 new implementation of bind_port() will actually raise an exception
2378 if it is passed an AF_INET/SOCK_STREAM socket with either the
2379 SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if
2380 available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on
2381 the socket it's been passed. This currently only applies to
2382 Windows. This option prevents any other sockets from binding to the
2383 host/port we've bound to, thus removing the possibility of the
2384 'non-deterministic' behaviour, as Microsoft puts it, that occurs
2385 when a second SOCK_STREAM socket binds and accepts to a host/port
2386 that's already been bound by another socket. The optional preferred
2387 port parameter to bind_port() has been removed. Under no
2388 circumstances should tests be hard coding ports!
2390 test_support.find_unused_port() has also been introduced, which will
2391 pass a temporary socket object to bind_port() in order to obtain an
2392 unused port. The temporary socket object is then closed and
2393 deleted, and the port is returned. This method should only be used
2394 for obtaining an unused port in order to pass to an external program
2395 (i.e. the -accept [port] argument to openssl's s_server mode) or as
2396 a parameter to a server-oriented class that doesn't give you direct
2397 access to the underlying socket used.
2399 Finally, test_support.HOST has been introduced, which should be used
2400 for the host argument of any relevant socket calls (i.e. bind and
2403 The following tests were updated to following the new conventions:
2404 test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib,
2405 test_poplib, test_ftplib, test_telnetlib, test_socketserver,
2406 test_asynchat and test_socket_ssl.
2408 It is now possible for multiple instances of the regression test
2409 suite to run in parallel without issue.
2414 - Issue #1496032: On alpha, use -mieee when gcc is the compiler.
2416 - Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
2417 gcc is used as compiler.
2419 - Issue #2573: On MacOS X it is now possible to install the framework
2420 with a different name using --with-framework-name=NAME.
2425 - Added implementation of copysign, acosh, asinh, atanh and log1p to
2426 the new files Include/pymath.h and Python/pymath.h for platforms
2427 which provide the functions through their libm. The files also
2428 contains several helpers and constants for math.
2430 - Added a new convenience macro, PyErr_WarnPy3k, for issuing Py3k warnings.
2433 What's New in Python 2.6 alpha 2?
2434 =================================
2436 *Release date: 02-Apr-2008*
2441 - Issue #1733757: The interpreter would hang on shutdown if the
2442 tracing function set by sys.settrace is still active and happens to
2443 call threading.currentThread().
2445 - Patch #1442: properly report exceptions when the PYTHONSTARTUP file
2448 - The compilation of a class nested in another class used to leak one
2449 reference on the outer class name.
2451 - Patch #1810: compile() can now compile _ast trees as returned by
2452 ``compile(..., PyCF_ONLY_AST)``.
2454 - Patch #2426: Added sqlite3.Connection.iterdump method to allow easy
2455 dumping of databases. Contributed by Paul Kippes at PyCon 2008.
2457 - Patch #2477: Added from __future__ import unicode_literals.
2459 - Added backport of bytearray type.
2461 - Issue #2355: add Py3k warning for buffer().
2463 - Issue #1477: With narrow Unicode builds, the unicode escape sequence
2464 \Uxxxxxxxx did not accept values outside the Basic Multilingual
2465 Plane. This affected raw unicode literals and the
2466 'raw-unicode-escape' codec. Now UTF-16 surrogates are generated in
2467 this case, like normal unicode literals and the 'unicode-escape'
2470 - Issue #2348: add Py3k warning for file.softspace.
2472 - Issue #2346/#2347: add Py3k warnings for __methods__ and
2475 - Issue #2358: Add a Py3k warning on sys.exc_clear() usage.
2477 - Issue #2400: Allow relative imports to "import *".
2479 - Issue #1745: Backport print function with ``from __future__ import
2482 - Issue #2332: add new attribute names for instance method objects.
2483 The two changes are: im_self -> __self__ and im_func -> __func__
2485 - Issue #2379: Raise a Py3K warning for __getitem__ or __getslice__ on
2486 exception instances.
2488 - Issue #2371: Add a Py3k warning when catching an exception that
2489 doesn't derive from BaseException.
2491 - Issue #2341: Add a Py3k warning when raising an exception that
2492 doesn't derive from BaseException.
2494 - Issue #2321: use pymalloc for unicode object string data to reduce
2495 memory usage in some circumstances.
2497 - PEP 3127: octal literals now start with "0o". Old-style octal
2498 literals are still valid. There are binary literals with a prefix of
2499 "0b". This also affects int(x, 0).
2501 - Issue #2359: Adding deprecation warnings for array.{read,write}.
2503 - Issue #1779871: GNU gcc can now build Python on OS X because the
2504 flags -Wno-long-double, -no-cpp-precomp, and -mno-fused-madd are no
2507 - Add a warning when asserting a non-empty tuple which is always true.
2509 - Issue #2179: speed up with statement execution by storing the exit
2510 method on the stack instead of in a temporary variable (patch by
2513 - Issue #2238: Some syntax errors in *args and **kwargs expressions
2514 could give bogus error messages.
2516 - Issue #2143: Fix embedded readline() hang on SSL socket EOF.
2521 - Patch #2240: Implement signal.setitimer and signal.getitimer.
2526 - Issue #2315: logging.handlers: TimedRotatingFileHandler now accounts
2527 for daylight savings time in calculating the next rollover.
2529 - Issue #2316: logging.handlers: TimedRotatingFileHandler now
2530 calculates rollovers correctly even when nothing is logged for a
2533 - Issue #2317: logging.handlers: TimedRotatingFileHandler now uses
2534 improved logic for removing old files.
2536 - Issue #2495: tokenize.untokenize now inserts a space between two
2537 consecutive string literals; previously, ["" ""] was rendered as
2538 [""""], which is incorrect python code.
2540 - Issue #2248: return the result of the QUIT command. from
2543 - Backport of Python 3.0's io module.
2545 - Issue #2482: Make sure that the coefficient of a Decimal is always
2546 stored as a str instance, not as a unicode instance. This ensures
2547 that str(Decimal) is always an instance of str.
2549 - Issue #2478: fix failure of decimal.Decimal(0).sqrt()
2551 - Issue #2432: give DictReader the dialect and line_num attributes
2552 advertised in the docs.
2554 - Issue #2460: Make Ellipsis object copyable.
2556 - Issue #1681432: Add triangular distribution to the random module
2558 - Issue #2136: urllib2's auth handler now allows single-quoted realms
2559 in the WWW-Authenticate header.
2561 - Issue #2434: Enhanced platform.win32_ver() to also work on Python
2562 installation which do not have the win32all package installed.
2564 - Added support to platform.uname() to also report the machine and
2565 processor information on Windows XP and later. As a result,
2566 platform.machine() and platform.processor() will report this
2567 information as well.
2569 - The library implementing the 2to3 conversion, lib2to3, was added to
2570 the standard distribution.
2572 - Issue #1747858: Fix chown to work with large uid's and gid's on
2575 - Issue #1202: zlib.crc32 and zlib.adler32 no longer return different
2576 values on 32-bit vs. 64-bit python interpreters. Both were correct,
2577 but they now both return a signed integer object for consistency.
2579 - Issue #1158: add %f format (fractions of a second represented as
2580 microseconds) to datetime objects. Understood by both strptime and
2583 - Issue #705836: struct.pack(">f", x) now raises OverflowError on all
2584 platforms when x is too large to fit into an IEEE 754 float;
2585 previously it only raised OverflowError on non IEEE 754 platforms.
2587 - Issues #2166, #1741 and #1531505: now distutils deals with HOME
2588 correctly under win32
2590 - Patch #1858: distutils: added multiple server support in .pypirc
2592 - Issue #1106316: pdb.post_mortem()'s parameter, "traceback", is now
2593 optional: it defaults to the traceback of the exception that is
2594 currently being handled (is mandatory to be in the middle of an
2595 exception, otherwise it raises ValueError).
2597 - Issue #1193577: A .shutdown() method has been added to SocketServers
2598 which terminates the .serve_forever() loop.
2600 - Issue #2220: handle rlcompleter attribute match failure more
2603 - Issue #2225: py_compile, when executed as a script, now returns a
2604 non- zero status code if not all files could be compiled
2607 - Bug #1725737: In distutils' sdist, exclude RCS, CVS etc. also in the
2608 root directory, and also exclude .hg, .git, .bzr, and _darcs.
2610 - Issue #1872: The struct module typecode for _Bool has been changed
2613 - The bundled libffi copy is now in sync with the recently released
2614 libffi3.0.4 version, apart from some small changes to
2615 Modules/_ctypes/libffi/configure.ac. On OS X, preconfigured libffi
2616 files are used. On all linux systems the --with-system-ffi
2617 configure option defaults to "yes".
2619 - Issue #1577: shutil.move() now calls os.rename() if the destination
2620 is a directory instead of copying-then-remove-source.
2625 - test_nis no longer fails when test.test_support.verbose is true and
2626 NIS is not set up on the testing machine.
2628 - Output comparison tests are no longer supported.
2630 - Rewrite test_errno to use unittest and no longer be a no-op.
2632 - GHOP 234: Convert test_extcall to doctest.
2634 - GHOP 290: Convert test_dbm and test_dummy_threading to unittest.
2636 - GHOP 293: Convert test_strftime, test_getargs, and test_pep247 to
2639 - Issue #2055: Convert test_fcntl to unittest.
2641 - Issue 1960: Convert test_gdbm to unittest.
2643 - GHOP 294: Convert test_contains, test_crypt, and test_select to
2646 - GHOP 238: Convert test_tokenize to use doctest.
2648 - GHOP 237: Rewrite test_thread using unittest.
2650 - Patch #2232: os.tmpfile might fail on Windows if the user has no
2651 permission to create files in the root directory.
2656 - A new script 2to3 is now installed, to run the 2.x to 3.x converter.
2658 - Python/memmove.c and Python/strerror.c have been removed; both
2659 functions are in the C89 standard library.
2661 - Patch #2284: Add -x64 option to rt.bat.
2666 - Patch #2477: Added PyParser_ParseFileFlagsEx() and
2667 PyParser_ParseStringFlagsFilenameEx().
2670 What's New in Python 2.6 alpha 1?
2671 =================================
2673 *Release date: 29-Feb-2008*
2678 - Issue #2051: pyc and pyo files are no longer created with permission
2679 644. The mode is now inherited from the py file.
2681 - Issue #2067: file.__exit__() now calls subclasses' close() method.
2683 - Patch #1759: Backport of PEP 3129 class decorators.
2685 - Issue #1881: An internal parser limit has been increased. Also see
2686 issue 215555 for a discussion.
2688 - Added the future_builtins module, which contains hex() and oct().
2689 These are the PEP 3127 version of these functions, designed to be
2690 compatible with the hex() and oct() builtins from Python 3.0. They
2691 differ slightly in their output formats from the existing, unchanged
2692 Python 2.6 builtins. The expected usage of the future_builtins
2694 from future_builtins import hex, oct
2696 - Issue #1600: Modifed PyOS_ascii_formatd to use at most 2 digit
2697 exponents for exponents with absolute value < 100. Follows C99
2698 standard. This is a change on Windows, which would use 3 digits.
2699 Also, added 'n' to the formats that PyOS_ascii_formatd understands,
2700 so that any alterations it does to the resulting string will be
2701 available in stringlib/formatter.h (for float.__format__).
2703 - Implemented PEP 3101, Advanced String Formatting. This adds a new
2704 builtin format(); a format() method for str and unicode; a
2705 __format__() method to object, str, unicode, int, long, float, and
2706 datetime; the class string.Formatter; and the C API
2709 - Fixed several potential crashes, all caused by specially crafted
2710 __del__ methods exploiting objects in temporarily inconsistent
2713 - Issue #2115: Important speedup in setting __slot__ attributes. Also
2714 prevent a possible crash: an Abstract Base Class would try to access
2715 a slot on a registered virtual subclass.
2717 - Fixed repr() and str() of complex numbers with infinity or nan as
2718 real or imaginary part.
2720 - Clear all free lists during a gc.collect() of the highest generation
2721 in order to allow pymalloc to free more arenas. Python may give back
2722 memory to the OS earlier.
2724 - Issue #2045: Fix an infinite recursion triggered when printing a
2725 subclass of collections.defaultdict, if its default_factory is set
2728 - Fixed a minor memory leak in dictobject.c. The content of the free
2729 list was not freed on interpreter shutdown.
2731 - Limit free list of method and builtin function objects to 256
2734 - Patch #1953: Added ``sys._compact_freelists()`` and the C API
2735 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
2736 to compact the internal free lists of pre-allocted ints and floats.
2738 - Issue #1983: Fixed return type of fork(), fork1() and forkpty()
2739 calls. Python expected the return type int but the fork familie
2742 - Issue #1678380: Fix a bug that identifies 0j and -0j when they
2743 appear in the same code unit.
2745 - Issue #2025: Add tuple.count() and tuple.index() methods to comply
2746 with the collections.Sequence API.
2748 - Patch #1970 by Antoine Pitrou: Speedup unicode whitespace and
2751 - Added ``PyType_ClearCache()`` and ``sys._clear_type_cache`` to clear
2752 the internal lookup cache for ref leak tests.
2754 - Patch #1473257: generator objects gain a gi_code attribute. This is
2755 the same object as the func_code attribute of the function that
2756 produced the generator.
2758 - Issue #1920: "while 0" statements were completely removed by the
2759 compiler, even in the presence of an "else" clause, which is
2760 supposed to be run when the condition is false. Now the compiler
2761 correctly emits bytecode for the "else" suite.
2763 - A few crashers fixed: weakref_in_del.py (issue #1377858);
2764 loosing_dict_ref.py (issue #1303614, test67.py);
2765 borrowed_ref_[34].py (not in tracker).
2767 - Issue #1069410: The "can't load dll" message box on Windows is
2768 suppressed while an extension is loaded by calling SetErrorMode in
2769 dynload_win.c. The error is still reported properly.
2771 - Issue #1915: Python compiles with --enable-unicode=no again. However
2772 several extension methods and modules do not work without unicode
2775 - Issue #1882: when compiling code from a string, encoding cookies in the
2776 second line of code were not always recognized correctly.
2778 - Issue #1679: "0x" was taken as a valid integer literal.
2780 - Issue #1865: ``bytes`` as an alias for ``str`` and b"" as an alias "" were
2783 - sys.float_info / PyFloat_GetInfo: The floating point information
2784 object was converted from a dict to a specialized structseq object.
2786 - Patch #1816: Added sys.flags structseq. It exposes the status of
2787 most command line arguments and PYTHON* environment variables.
2789 - Objects/structseq.c: Implemented new structseq representation. The
2790 patch makes structseqs (e.g. the return value of os.stat) more
2793 - Patch #1700288: added a type attribute cache that caches method
2794 accesses, resulting in speedups in heavily object-oriented code.
2796 - Bug #1776: __import__() no longer accepts filenames on any platform.
2797 The first parameter to __import__() must be a valid module name.
2799 - Patch #1668: renamed THREADDEBUG envvar to PYTHONTHREADDEBUG.
2801 - Patch #602345: Add -B command line option, PYTHONDONTWRITEBYTECODE
2802 envvar and sys.dont_write_bytecode attribute. All these can be set
2803 to forbid Python to attempt to write compiled bytecode files.
2805 - Improve some exception messages when Windows fails to load an
2806 extension module. Now we get for example '%1 is not a valid Win32
2807 application' instead of 'error code 193'.
2809 - Bug #1481296: Fixed long(float('nan')) != 0L.
2811 - Issue #1640: Added math.isinf(x), math.isnan(x) and math.copysign(x,
2814 - Issue #1635: Platform independent creation and representation of NaN
2815 and INF. float("nan"), float("inf") and float("-inf") now work on
2816 every platform with IEEE 754 semantics.
2818 - Compiler now generates simpler and faster code for dictionary
2819 literals. The oparg for BUILD_MAP now indicates an estimated
2820 dictionary size. There is a new opcode, STORE_MAP, for adding
2821 entries to the dictionary.
2823 - Issue #1638: %zd configure test fails on Linux.
2825 - Issue #1620: New property decorator syntax was modifying the
2826 decorator in place instead of creating a new decorator object.
2828 - Issue #1538: Avoid copying string in split/rsplit if the split char
2831 - Issue #1553: An erroneous __length_hint__ can make list() raise a
2834 - PEP 366: Allow explicit relative imports when executing modules
2835 inside packages with the -m switch via a new module level
2836 __package__ attribute.
2838 - Issue #1402: Fix a crash on exit, when another thread is still
2839 running, and if the deallocation of its frames somehow calls the
2840 PyGILState_Ensure() / PyGILState_Release() functions.
2842 - Expose the Py_Py3kWarningFlag as sys.py3kwarning.
2844 - Issue #1445: Fix a SystemError when accessing the ``cell_contents``
2845 attribute of an empty cell object.
2847 - Issue #1460: The utf-7 incremental decoder did not accept truncated
2848 input. It now correctly saves its state between chunks of data.
2850 - Patch #1739468: Directories and zipfiles containing a __main__.py
2851 file can now be directly executed by passing their name to the
2852 interpreter. The directory/zipfile is automatically inserted as the
2853 first entry in sys.path.
2855 - Issue #1265: Fix a problem with sys.settrace, if the tracing
2856 function uses a generator expression when at the same time the
2857 executed code is closing a paused generator.
2859 - sets and frozensets now have an isdisjoint() method.
2861 - optimize the performance of builtin.sum().
2863 - Fix warnings found by the new version of the Coverity checker.
2865 - The enumerate() builtin function is no longer bounded to sequences
2866 smaller than LONG_MAX. Formerly, it raised an OverflowError. Now,
2867 automatically shifts from ints to longs.
2869 - Issue #1686386: Tuple's tp_repr did not take into account the
2870 possibility of having a self-referential tuple, which is possible
2871 from C code. Nor did object's tp_str consider that a type's tp_str
2872 could do something that could lead to an inifinite recursion.
2873 Py_ReprEnter() and Py_EnterRecursiveCall(), respectively, fixed the
2876 - Issue #1164: It was possible to trigger deadlock when using the
2877 'print' statement to write to a file since the GIL was not released
2878 as needed. Now PyObject_Print() does the right thing along with
2879 various tp_print implementations of the built-in types and those in
2880 the collections module.
2882 - Issue #1147: Exceptions were directly allowing string exceptions in
2883 their throw() method even though string exceptions no longer
2886 - Issue #1096: Prevent a segfault from getting the repr of a very
2887 deeply nested list by using the recursion counter.
2889 - Issue #1202533: Fix infinite recursion calls triggered by calls to
2890 PyObject_Call() never calling back out to Python code to trigger
2891 recursion depth updates/checks. Required the creation of a static
2892 RuntimeError instance in case normalizing an exception put the
2893 recursion check value past its limit. Fixes crashers
2894 infinite_rec_(1|2|4|5).py.
2896 - Patch #1031213: Decode source line in SyntaxErrors back to its
2897 original source encoding.
2899 - Patch #1673759: add a missing overflow check when formatting floats
2902 - Prevent expandtabs() on string and unicode objects from causing a
2903 segfault when a large width is passed on 32-bit platforms.
2905 - Issue #1733488: Fix compilation of bufferobject.c on AIX.
2907 - Issue #1722485: remove docstrings again when running with -OO.
2909 - Add new attribute names for function objects. All the func_* become
2910 __*__ attributes. (Some already existed, e.g., __doc__ and
2913 - Add -3 option to the interpreter to warn about features that are
2914 deprecated and will be changed/removed in Python 3.0.
2916 - Patch #1686487: you can now pass any mapping after '**' in function
2919 - except clauses may now be spelled either "except E, target:" or
2920 "except E as target:". This is to provide forwards compatibility
2923 - Deprecate BaseException.message as per PEP 352.
2925 - Issue #1303614: don't expose object's __dict__ when the dict is
2926 inherited from a builtin base.
2928 - When __slots__ are set to a unicode string, make it work the same as
2929 setting a plain string, ie don't expand to single letter identifiers.
2931 - Request #1191699: Slices can now be pickled.
2933 - Request #1193128: str.translate() now allows a None argument for
2934 translations that only remove characters without re-mapping the
2935 remaining characters.
2937 - Patch #1682205: a TypeError while unpacking an iterable is no longer
2938 masked by a generic one with the message "unpack non-sequence".
2940 - Remove unused file Python/fmod.c.
2942 - Bug #1683368: The object.__init__() and object.__new__() methods are
2943 now stricter in rejecting excess arguments. The only time when
2944 either allows excess arguments is when it is not overridden and the
2945 other one is. For backwards compatibility, when both are
2946 overridden, it is a deprecation warning (for now; maybe a Py3k
2947 warning later). Also, type.__init__() insists on the same signature
2948 as supported by type.__new__().
2950 - Patch #1675423: PyComplex_AsCComplex() now tries to convert an
2951 object to complex using its __complex__() method before falling back
2952 to the __float__() method. Therefore, the functions in the cmath
2953 module now can operate on objects that define a __complex__()
2956 - Patch #1623563: allow __class__ assignment for classes with
2957 __slots__. The old and the new class are still required to have the
2960 - Patch #1642547: Fix an error/crash when encountering syntax errors
2961 in complex if statements.
2963 - Patch #1462488: Python no longer segfaults when
2964 ``object.__reduce_ex__()`` is called with an object that is faking
2967 - Patch #1680015: Don't modify __slots__ tuple if it contains an
2970 - Patch #1444529: the builtin compile() now accepts keyword arguments.
2972 - Bug #1678647: write a newline after printing an exception in any
2973 case, even when converting the value to a string failed.
2975 - The dir() function has been extended to call the __dir__() method on
2976 its argument, if it exists. If not, it will work like before. This
2977 allows customizing the output of dir() in the presence of a
2980 - Patch #922167: Python no longer segfaults when faced with infinitely
2981 self-recursive reload() calls (as reported by bug #742342).
2983 - Patch #1675981: remove unreachable code from ``type.__new__()``
2986 - Patch #1491866: change the complex() constructor to allow
2987 parthensized forms. This means complex(repr(x)) now works instead of
2988 raising a ValueError.
2990 - Patch #703779: unset __file__ in __main__ after running a file. This
2991 makes the filenames the warning module prints much more sensible
2992 when a PYTHONSTARTUP file is used.
2994 - Variant of patch #697613: don't exit the interpreter on a SystemExit
2995 exception if the -i command line option or PYTHONINSPECT environment
2996 variable is given, but break into the interactive interpreter just
2997 like on other exceptions or normal program exit.
2999 - Patch #1638879: don't accept strings with embedded NUL bytes in
3002 - Bug #1674503: close the file opened by execfile() in an error
3005 - Patch #1674228: when assigning a slice (old-style), check for the
3006 sq_ass_slice instead of the sq_slice slot.
3008 - When printing an unraisable error, don't print exceptions. before
3009 the name. This duplicates the behavior whening normally printing
3012 - Bug #1653736: Properly discard third argument to
3013 slot_nb_inplace_power.
3015 - PEP 352: Raising a string exception now triggers a TypeError.
3016 Attempting to catch a string exception raises DeprecationWarning.
3018 - Bug #1377858: Fix the segfaulting of the interpreter when an object
3019 created a weakref on itself during a __del__ call for new-style
3020 classes (classic classes still have the bug).
3022 - Bug #1579370: Make PyTraceBack_Here use the current thread, not the
3023 frame's thread state.
3025 - patch #1630975: Fix crash when replacing sys.stdout in
3028 - Prevent seg fault on shutdown which could occur if an object raised
3031 - Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, to
3032 avoid relying on atexit.
3034 - Bug #1590891: random.randrange don't return correct value for big
3037 - Patch #1586791: Better exception messages for some operations on
3038 strings, tuples and lists.
3040 - Bug #1067760: Deprecate passing floats to file.seek.
3042 - Bug #1591996: Correctly forward exception in instance_contains().
3044 - Bug #1588287: fix invalid assertion for `1,2` in debug builds.
3046 - Bug #1576657: when setting a KeyError for a tuple key, make sure
3047 that the tuple isn't used as the "exception arguments tuple".
3049 - Bug #1565514: SystemError not raised on too many nested blocks.
3051 - Bug #1576174: WindowsError now displays the windows error code
3052 again, no longer the posix error code.
3054 - Patch #1549049: Support long values in structmember, issue warnings
3055 if the assigned value for structmember fields gets truncated.
3057 - Update the peephole optimizer to remove more dead code (jumps after
3058 returns) and inline unconditional jumps to returns.
3060 - Bug #1545497: when given an explicit base, int() did ignore NULs
3061 embedded in the string to convert.
3063 - Bug #1569998: break inside a try statement (outside a loop) is now
3064 recognized and rejected.
3066 - list.pop(x) accepts any object x following the __index__ protocol.
3068 - A number of places, including integer negation and absolute value,
3069 were fixed to not rely on undefined behaviour of the C compiler
3072 - Bug #1566800: make sure that EnvironmentError can be called with any
3073 number of arguments, as was the case in Python 2.4.
3075 - Patch #1567691: super() and new.instancemethod() now don't accept
3076 keyword arguments any more (previously they accepted them, but
3079 - Fix a bug in the parser's future statement handling that led to
3080 "with" not being recognized as a keyword after, e.g., this
3081 statement: from __future__ import division, with_statement
3083 - Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).
3085 - Fix %zd string formatting on Mac OS X so it prints negative numbers.
3087 - Allow exception instances to be directly sliced again.
3089 - Bug #1551432: Exceptions do not define an explicit __unicode__
3090 method. This allows calling unicode() on exceptions classes
3091 directly to succeed.
3093 - Bug #1542051: Exceptions now correctly call PyObject_GC_UnTrack.
3094 Also make sure that every exception class has __module__ set to
3097 - Bug #1550983: emit better error messages for erroneous relative
3098 imports (if not in package and if beyond toplevel package).
3100 - Overflow checking code in integer division ran afoul of new gcc
3101 optimizations. Changed to be more standard-conforming.
3103 - Patch #1542451: disallow continue anywhere under a finally.
3105 - Patch #1546288: fix seg fault in dict_equal due to ref counting bug.
3107 - The return tuple from str.rpartition(sep) is (tail, sep, head) where
3108 head is the original string if sep was not found.
3110 - Bug #1520864: unpacking singleton tuples in list comprehensions and
3111 generator expressions (x for x, in ... ) works again. Fixing this
3112 problem required changing the .pyc magic number. This means that
3113 .pyc files generated before 2.5c2 will be regenerated.
3115 - ``with`` and ``as`` are now keywords.
3117 - Bug #1664966: Fix crash in exec if Unicode filename can't be
3120 - Issue #1537: Changed GeneratorExit's base class from Exception to
3123 - Issue #1703448: A joined thread could show up in the
3124 threading.enumerate() list after the join() for a brief period until
3131 - Patch #2274: Add heapq.heappushpop().
3133 - Add inspect.isabstract(object) to fix bug #2223
3135 - Add a __format__ method to Decimal, to support PEP 3101.
3137 - Add a timing parameter when using trace.Trace to print out
3140 - Issue #1627: httplib now ignores negative Content-Length headers.
3142 - Issue #900744: If an invalid chunked-encoding header is sent by a
3143 server, httplib will now raise IncompleteRead and close the
3144 connection instead of raising ValueError.
3146 - Issue #1492: The content type of BaseHTTPServer error messages can
3149 - Issue #1781: ConfigParser now does not let you add the "default" section
3152 - Removed uses of dict.has_key() from distutils, and uses of
3153 callable() from copy_reg.py, so the interpreter now starts up
3154 without warnings when '-3' is given. More work like this needs to
3155 be done in the rest of the stdlib.
3157 - Issue #1916: added isgenerator() and isgeneratorfunction() to
3160 - Issue #1224: Fixed bad url parsing when path begins with double
3163 - ctypes instances that are not or do not contain pointers can now be
3166 - Patch #1966: Break infinite loop in httplib when the servers
3167 implements the chunked encoding incorrectly.
3169 - Rename rational.py to fractions.py and the rational.Rational class
3170 to fractions.Fraction, to avoid the name clash with the abstract
3171 base class numbers.Rational. See discussion in issue #1682.
3173 - The pickletools module now provides an optimize() function that
3174 eliminates unused PUT opcodes from a pickle string.
3176 - Patch #2021: Allow tempfile.NamedTemporaryFile and
3177 SpooledTemporaryFile to be used in with statements by correctly
3178 supporting the context management protocol.
3180 - Patch #1979: Add rich comparisons to Decimal, and make Decimal
3181 comparisons involving a NaN follow the IEEE 754 standard.
3183 - Issue #2004: tarfile.py: Use mode 0700 for temporary directories and
3184 default permissions for missing directories.
3186 - Issue #175006: The debugger used to skip the condition of a "while"
3187 statement after the first iteration. Now it correctly steps on the
3188 expression, and breakpoints on the "while" statement are honored on
3191 - Issue #1765140: add an optional delay argument to FileHandler and
3192 its subclasses. Defaults to false (existing behaviour), but if true,
3193 defers opening the file until the first call to emit().
3195 - The pprint module now supports sets and frozensets.
3197 - Issue #1221598: add optional callbacks to ftplib.FTP's storbinary()
3198 and storlines() methods. (Contributed by Phil Schwartz)
3200 - Issue #1715: include sub-extension modules in pydoc's text output.
3202 - Issue #1836: fix an off-by-one bug in TimedRotatingHandler's
3203 rollover time calculation.
3205 - Issue #1021: fix a bug to allow basicConfig to accept NOTSET as a
3208 - Issue #932563: add LoggerAdapter convenience class to make it easier
3209 to add contextual information in logging output.
3211 - Issue #1760556: fix a bug to avoid FileHandler throwing an exception
3214 - Bug #1530959: distutils' build command now uses different build
3215 directory when building extension modules against versions of Python
3216 compiled with ``--with-pydebug``.
3218 - Issue #1555501: move plistlib from plat-mac directory to general
3221 - Issue #1269: fix a bug in pstats.add_callers() and add a unit test
3224 - Issue #1669: don't allow shutil.rmtree() to be called on a symlink
3227 - Issue #1664522: in urllib, don't read non-existing directories in
3228 ftp mode, returning a 0-byte file -- raise an IOError instead.
3230 - Issue #856047: respect the ``no_proxy`` environment variable when
3231 using the ``http_proxy`` etc. environment variables in urllib.
3233 - Issue #1178141: add a getcode() method to the addinfourls that
3234 urllib.open() returns so that you can retrieve the HTTP status code.
3236 - Issue #1003: Fix zipfile decryption check, it would fail zip files
3237 with extended local headers.
3239 - Issue #1189216: Fix the zipfile module to work on archives with
3240 headers past the 2**31 byte boundary.
3242 - Issue #1336: fix a race condition in subprocess.Popen if the garbage
3243 collector kicked in at the wrong time that would cause the process
3244 to hang when the child wrote to stderr.
3246 - Issue #1146: fix how textwrap breaks a long word that would start in
3247 the last column of a line.
3249 - Issue #1693149: trace.py --ignore-module - accept multiple
3250 comma-separated modules to be given.
3252 - Issue #1822: MIMEMultipart.is_multipart() behaves correctly for a
3253 just-created (and empty) instance. Thanks Jonathan Share.
3255 - Issue #1861: Added an attribute to the sched module which returns an
3256 ordered list of upcoming events (displayed as named tuples).
3258 - Issue #1837: The queue module now also supports a LIFO queue and a
3261 - Patch #1048820: Add insert-mode editing to curses.textpad.Textbox
3262 (patch by Stefan Wehr). Also, fix an off-by-one bug in
3265 - Issue #1831: ctypes now raises a TypeError if conflicting positional
3266 and named arguments are passed to a Structure or Union initializer.
3267 When too many positional arguments are passed, also a TypeError is
3268 raised instead of a ValueError.
3270 - Convert the internal ctypes array type cache to a WeakValueDict so
3271 that array types do not live longer than needed.
3273 - Issue #1786: pdb should use its own stdin/stdout around an exec call
3274 and when creating a recursive instance.
3276 - Issue #1698398: ZipFile.printdir() crashed because the format string
3277 expected a tuple type of length six instead of time.struct_time
3280 - Issue #1780: The Decimal constructor now accepts arbitrary leading
3281 and trailing whitespace when constructing from a string.
3282 Context.create_decimal no longer accepts trailing newlines.
3284 - Decimal.as_tuple(), difflib.find_longest_match() and inspect
3285 functions that returned a tuple now return a named tuple.
3287 - Doctest now returns results as a named tuple for readability:
3288 (0, 7) --> TestResults(failed=0, attempted=7)
3290 - Issue #846388:q re.match is interruptible now, which is particularly
3291 good for long regular expression matches.
3293 - Patch #1137: allow setting buffer_size attribute on pyexpat Parser
3294 objects to set the character data buffer size.
3296 - Issue #1757: The hash of a Decimal instance is no longer affected by
3297 the current context.
3299 - Patch #467924: add ZipFile.extract() and ZipFile.extractall() in the
3302 - Issue #1646: Make socket support the TIPC protocol.
3304 - Bug #1742: return os.curdir from os.path.relpath() if both arguments
3305 are equal instead of raising an exception.
3307 - Patch #1637: fix urlparse for URLs like 'http://x.com?arg=/foo'.
3309 - Patch #1698: allow '@' in username parsed by urlparse.py.
3311 - Issue #1735: TarFile.extractall() now correctly sets directory
3312 permissions and times.
3314 - Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a mountpoint.
3316 - Bug #1687: Fxed plistlib.py restricts <integer> to Python int when
3319 - Issue #1700: Regular expression inline flags incorrectly handle
3320 certain unicode characters.
3322 - Issue #1689: PEP 3141, numeric abstract base classes.
3324 - Tk issue #1851526: Return results from Python callbacks to Tcl as
3327 - Issue #1642: Fix segfault in ctypes when trying to delete attributes.
3329 - Issue #1727780: Support loading pickles of random.Random objects
3330 created on 32-bit systems on 64-bit systems, and vice versa. As a
3331 consequence of the change, Random pickles created by Python 2.6
3332 cannot be loaded in Python 2.5.
3334 - Issue #1455: The distutils package now supports VS 2005 and VS 2008
3335 for both the msvccompiler and cygwincompiler.
3337 - Issue #1531: tarfile.py: Read fileobj from the current offset, do
3338 not seek to the start.
3340 - Issue #1534: Added a dictionary sys.float_info with information
3341 about the internal floating point type to the sys module.
3343 - Issue #1429818: patch for trace and doctest modules so they play
3346 - doctest made a bad assumption that a package's __loader__.get_data()
3347 method used universal newlines.
3349 - Issue #1705170: contextlib.contextmanager was still swallowing
3350 StopIteration in some cases. This should no longer happen.
3352 - Issue #1292: On alpha, arm, ppc, and s390 linux systems the
3353 --with-system-ffi configure option defaults to "yes".
3355 - IN module for FreeBSD 8 is added and preexisting FreeBSD 6 and 7
3358 - Issues #1181, #1287: unsetenv() is now called when the
3359 os.environ.pop() and os.environ.clear() methods are used.
3361 - ctypes will now work correctly on 32-bit systems when Python is
3362 configured with --with-system-ffi.
3364 - Patch #1203: ctypes now does work on OS X when Python is built with
3365 --disable-toolbox-glue.
3367 - collections.deque() now supports a "maxlen" argument.
3369 - itertools.count() is no longer bounded to LONG_MAX. Formerly, it
3370 raised an OverflowError. Now, automatically shifts from ints to
3373 - Added itertools.product() which forms the Cartesian product of the
3376 - Added itertools.combinations() and itertools.permutations().
3378 - Patch #1541463: optimize performance of cgi.FieldStorage operations.
3380 - Decimal is fully updated to the latest Decimal Specification
3383 - Bug #1153: repr.repr() now doesn't require set and dictionary items
3384 to be orderable to properly represent them.
3386 - A 'c_longdouble' type was added to the ctypes module.
3388 - Bug #1709599: Run test_1565150 only if the file system is NTFS.
3390 - When encountering a password-protected robots.txt file the
3391 RobotFileParser no longer prompts interactively for a username and
3392 password (bug 813986).
3394 - TarFile.__init__() no longer fails if no name argument is passed and
3395 the fileobj argument has no usable name attribute (e.g. StringIO).
3397 - The functools module now provides 'reduce', for forward
3398 compatibility with Python 3000.
3400 - Server-side SSL support and cert verification added, by Bill
3403 - socket.ssl deprecated; use new ssl module instead.
3405 - uuid creation is now threadsafe.
3407 - EUC-KR codec now handles the cheot-ga-keut composed make-up hangul
3410 - GB18030 codec now can encode additional two-byte characters that are
3413 - Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
3415 - Bug #1704793: Return UTF-16 pair if unicodedata.lookup cannot
3416 represent the result in a single character.
3418 - Bug #978833: Close https sockets by releasing the _ssl object.
3420 - Change location of the package index to pypi.python.org/pypi
3422 - Bug #1701409: Fix a segfault in printing ctypes.c_char_p and
3423 ctypes.c_wchar_p when they point to an invalid location. As a
3424 sideeffect the representation of these instances has changed.
3426 - tarfile.py: Added "exclude" keyword argument to TarFile.add().
3428 - Bug #1734723: Fix repr.Repr() so it doesn't ignore the maxtuple
3431 - The urlopen function of urllib2 now has an optional timeout
3432 parameter (note that it actually works with HTTP, HTTPS, FTP and
3435 - In ftplib, the FTP.ntransfercmd method, when in passive mode, now
3436 uses the socket.create_connection function, using the timeout
3437 specified at connection time.
3439 - Bug #1728403: Fix a bug that CJKCodecs StreamReader hangs when it
3440 reads a file that ends with incomplete sequence and sizehint
3441 argument for .read() is specified.
3443 - Bug #1730389: Change time.strptime() to use ``\s+`` instead of
3444 ``\s*`` when matching spaces in the specified format argument.
3446 - Bugs #1668596/#1720897: distutils now copies data files even if
3447 package_dir is empty.
3449 - sha now raises a DeprecationWarning upon import.
3451 - md5 now raises a DeprecationWarning upon import.
3453 - Issue #1385: The hmac module now computes the correct hmac when
3454 using hashes with a block size other than 64 bytes (such as sha384
3457 - mimify now raises a DeprecationWarning upon import.
3459 - MimeWriter now raises a DeprecationWarning upon import.
3461 - tarfile.py: Improved unicode support. Unicode input names are now
3462 officially supported. Added "errors" argument to the TarFile class.
3464 - urllib.ftpwrapper class now accepts an optional timeout.
3466 - shlex.split() now has an optional "posix" parameter.
3468 - The posixfile module now raises a DeprecationWarning.
3470 - Remove the gopherlib module. This also leads to the removal of
3471 gopher support in urllib/urllib2.
3473 - Fix bug in marshal where bad data would cause a segfault due to lack
3474 of an infinite recursion check.
3476 - Removed plat-freebsd2 and plat-freebsd3 directories (and IN.py in
3479 - HTML-escape the plain traceback in cgitb's HTML output, to prevent
3480 the traceback inadvertently or maliciously closing the comment and
3481 injecting HTML into the error page.
3483 - The popen2 module and os.popen* are deprecated. Use the subprocess
3486 - Added an optional credentials argument to SMTPHandler, for use with
3487 SMTP servers which require authentication.
3489 - Patch #1695948: Added optional timeout parameter to SocketHandler.
3491 - Bug #1652788: Minor fix for currentframe.
3493 - Patch #1598415: Added WatchedFileHandler to better support external
3494 log file rotation using e.g. newsyslog or logrotate. This handler is
3495 only useful in Unix/Linux environments.
3497 - Bug #1706381: Specifying the SWIG option "-c++" in the setup.py file
3498 (as opposed to the command line) will now write file names ending in
3501 - As specified in RFC 2616, an HTTP response like 2xx indicates that
3502 the client's request was successfully received, understood, and
3503 accepted. Now in these cases no error is raised in urllib (issue
3506 - Bug #1290505: time.strptime's internal cache of locale information
3507 is now properly recreated when the locale is changed.
3509 - Patch #1685563: remove (don't add) duplicate paths in
3510 distutils.MSVCCompiler.
3512 - Added a timeout parameter to the constructor of other protocols
3513 (telnetlib, ftplib, smtplib and poplib). This is second part of the
3514 work started with create_connection() and timeout in httplib, and
3515 closes patch #723312.
3517 - Patch #1676823: Added create_connection() to socket.py, which may be
3518 called with a timeout, and use it from httplib (whose HTTPConnection
3519 and HTTPSConnection now accept an optional timeout).
3521 - Bug #978833: Revert r50844, as it broke _socketobject.dup.
3523 - Bug #1675967: re patterns pickled with Python 2.4 and earlier can
3524 now be unpickled with Python 2.5 and newer.
3526 - Patch #1630118: add a SpooledTemporaryFile class to tempfile.py.
3528 - Patch #1273829: os.walk() now has a "followlinks" parameter. If set
3529 to True (which is not the default), it visits symlinks pointing to
3532 - Bug #1681228: the webbrowser module now correctly uses the default
3533 GNOME or KDE browser, depending on whether there is a session of one
3534 of those present. Also, it tries the Windows default browser before
3535 trying Mozilla variants.
3537 - Patch #1339796: add a relpath() function to os.path.
3539 - Patch #1681153: the wave module now closes a file object it opened if
3540 initialization failed.
3542 - Bug #767111: fix long-standing bug in urllib which caused an
3543 AttributeError instead of an IOError when the server's response
3544 didn't contain a valid HTTP status line.
3546 - Patch #957650: "%var%" environment variable references are now
3547 properly expanded in ntpath.expandvars(), also "~user" home
3548 directory references are recognized and handled on Windows.
3550 - Patch #1429539: pdb now correctly initializes the __main__ module
3551 for the debugged script, which means that imports from __main__ work
3554 - The nonobvious commands.getstatus() function is now deprecated.
3556 - Patch #1393667: pdb now has a "run" command which restarts the
3557 debugged Python program, optionally with different arguments.
3559 - Patch #1649190: Adding support for _Bool to ctypes as c_bool.
3561 - Patch #1530482: add pydoc.render_doc() which returns the
3562 documentation for a thing instead of paging it to stdout, which
3565 - Patch #1533909: the timeit module now accepts callables in addition
3566 to strings for the code to time and the setup code. Also added two
3567 convenience functions for instantiating a Timer and calling its
3570 - Patch #1537850: tempfile.NamedTemporaryFile now has a "delete"
3571 parameter which can be set to False to prevent the default
3572 delete-on-close behavior.
3574 - Patch #1581073: add a flag to textwrap that prevents the dropping of
3575 whitespace while wrapping.
3577 - Patch #1603688: ConfigParser.SafeConfigParser now checks values that
3578 are set for invalid interpolation sequences that would lead to
3579 errors on reading back those values.
3581 - Added support for the POSIX.1-2001 (pax) format to
3582 tarfile.py. Extended and cleaned up the test suite. Added a new
3585 - Patch #1449244: Support Unicode strings in
3586 email.message.Message.{set_charset,get_content_charset}.
3588 - Patch #1542681: add entries for "with", "as" and "CONTEXTMANAGERS"
3589 to pydoc's help keywords.
3591 - Patch #1555098: use str.join() instead of repeated string
3592 concatenation in robotparser.
3594 - Patch #1635454: the csv.DictWriter class now includes the offending
3595 field names in its exception message if you try to write a record
3596 with a dictionary containing fields not in the CSV field names list.
3598 - Patch #1668100: urllib2 now correctly raises URLError instead of
3599 OSError if accessing a local file via the file:// protocol fails.
3601 - Patch #1677862: Require a space or tab after import in .pth files.
3603 - Patch #1192590: Fix pdb's "ignore" and "condition" commands so they
3604 trap the IndexError caused by passing in an invalid breakpoint
3607 - Patch #1599845: Add an option to disable the implicit calls to
3608 server_bind() and server_activate() in the constructors for
3609 TCPServer, SimpleXMLRPCServer and DocXMLRPCServer.
3611 - Bug #1531963: Make SocketServer.TCPServer's server_address always be
3612 equal to calling getsockname() on the server's socket. Fixed by
3615 - Patch #742598: Add .timeout attribute to SocketServer that calls
3616 .handle_timeout() when no requests are received.
3618 - Bug #1651235: When a tuple was passed to a ctypes function call,
3619 Python would crash instead of raising an error.
3621 - Bug #1646630: ctypes.string_at(buf, 0) and ctypes.wstring_at(buf, 0)
3622 returned string up to the first NUL character.
3624 - Patch #957003: Implement smtplib.LMTP.
3626 - Patch #1481079: add support for HTTP_REFERER to CGIHTTPServer.
3628 - Patch #1675424: Added tests for uncovered code in the zipfile
3629 module. The KeyError raised by Zipfile.getinfo for nonexistent
3630 names now has a descriptive message.
3632 - Bug #1115886: os.path.splitext('.cshrc') gives now ('.cshrc', '').
3634 - unittest now verifies more of its assumptions. In particular,
3635 TestCase and TestSuite subclasses (not instances) are no longer
3636 accepted in TestSuite.addTest(). This should cause no
3637 incompatibility since it never made sense with ordinary subclasses
3638 -- the failure just occurred later, with a more cumbersome
3641 - Patch #787789: allow to pass custom TestRunner instances to
3642 unittest's main() function.
3644 - Patches #1550273, #1550272: fix a few bugs in unittest and add a
3645 comprehensive test suite for the module.
3647 - Patch #1001604: glob.glob() now returns unicode filenames if it was
3648 given a unicode argument and os.listdir() returns unicode filenames.
3650 - Patch #1673619: setup.py identifies extension modules it doesn't
3651 know how to build and those it knows how to build but that fail to
3654 - Patch #912410: Replace HTML entity references for attribute values
3657 - Patch #1663234: you can now run doctest on test files and modules
3658 using "python -m doctest [-v] filename ...".
3660 - Patch #1121142: Implement ZipFile.open.
3662 - Taught setup.py how to locate Berkeley DB on Macs using MacPorts.
3664 - Added heapq.merge() for merging sorted input streams.
3666 - Added collections.namedtuple() for assigning field names to tuples.
3668 - Added itertools.izip_longest().
3670 - Have the encoding package's search function dynamically import using
3671 absolute import semantics.
3673 - Patch #1647484: Renamed GzipFile's filename attribute to name.
3675 - Patch #1517891: Mode 'a' for ZipFile now creates the file if it
3678 - Patch #698833: Support file decryption in zipfile.
3680 - Patch #685268: Consider a package's __path__ in imputil.
3682 - Patch #1463026: Support default namespace in XMLGenerator.
3684 - Patch #1571379: Make trace's --ignore-dir facility work in the face
3685 of relative directory names.
3687 - Bug #1600860: Search for shared python library in LIBDIR, not
3688 lib/python/config, on "linux" and "gnu" systems.
3690 - Patch #1652681: tarfile.py: create nonexistent files in append mode
3691 and allow appending to empty files.
3693 - Bug #1124861: Automatically create pipes if GetStdHandle fails in
3696 - Patch #1634778: add missing encoding aliases for iso8859_15 and
3699 - Patch #1638243: the compiler package is now able to correctly
3700 compile a with statement; previously, executing code containing a
3701 with statement compiled by the compiler package crashed the
3704 - Bug #1643943: Fix time.strptime's support for the %U directive.
3706 - Patch #1507247: tarfile.py: use current umask for intermediate
3709 - Patch #1627441: close sockets properly in urllib2.
3711 - Bug #494589: make ntpath.expandvars behave according to its
3714 - Changed platform module API python_version_tuple() to actually
3715 return a tuple (it used to return a list).
3717 - Added new platform module APIs python_branch(), python_revision(),
3718 python_implementation() and linux_distribution().
3720 - Added support for IronPython and Jython to the platform module.
3722 - The sets module has been deprecated. Use the built-in set/frozenset
3725 - Bug #1610795: make ctypes.util.find_library work on BSD systems.
3727 - Fixes for 64-bit Windows: In ctypes.wintypes, correct the
3728 definitions of HANDLE, WPARAM, LPARAM data types. Make
3729 parameterless foreign function calls work.
3731 - The version number of the ctypes package changed to "1.1.0".
3733 - Bug #1627575: logging: Added _open() method to FileHandler which can
3734 be used to reopen files. The FileHandler instance now saves the
3735 encoding (which can be None) in an attribute called "encoding".
3737 - Bug #411881: logging.handlers: bare except clause removed from
3738 SMTPHandler.emit. Now, only ImportError is trapped.
3740 - Bug #411881: logging.handlers: bare except clause removed from
3741 SocketHandler.createSocket. Now, only socket.error is trapped.
3743 - Bug #411881: logging: bare except clause removed from
3744 LogRecord.__init__. Now, only ValueError, TypeError and
3745 AttributeError are trapped.
3747 - Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj
3750 - Patch #1182394 from Shane Holloway: speed up HMAC.hexdigest.
3752 - Patch #1262036: Prevent TarFiles from being added to themselves
3753 under certain conditions.
3755 - Patch #1230446: tarfile.py: fix ExFileObject so that read() and
3756 tell() work correctly together with readline().
3758 - Patch #1484695: The tarfile module now raises a HeaderError
3759 exception if a buffer given to frombuf() is invalid.
3761 - Bug #1503765: Fix a problem in logging.config with spaces in comma-
3762 separated lists read from logging config files.
3764 - Patch #1604907: Fix problems in logging.handlers caused at logging
3765 shutdown when syslog handlers fail to initialize because of syslogd
3768 - Patch #1608267: fix a race condition in os.makedirs() if the
3769 directory to be created is already there.
3771 - Patch #1610437: fix a tarfile bug with long filename headers.
3773 - Patch #1371075: Make ConfigParser accept optional dict type for
3774 ordering, sorting, etc.
3776 - Bug #1563807: _ctypes built on AIX fails with ld ffi error.
3778 - Bug #1598620: A ctypes Structure cannot contain itself.
3780 - Patch #1070046: Marshal new-style objects like InstanceType in
3783 - cStringIO.truncate(-1) now raises an IOError, like StringIO and
3786 - Patch #1472877: Fix Tix subwidget name resolution.
3788 - Patch #1594554: Always close a tkSimpleDialog on ok(), even if an
3791 - Patch #1538878: Don't make tkSimpleDialog dialogs transient if the
3792 parent window is withdrawn.
3794 - Bug #1597824: return the registered function from atexit.register()
3795 to facilitate usage as a decorator.
3797 - Patch #1360200: Use unmangled_version RPM spec field to deal with
3800 - Patch #1359217: Process 2xx response in an ftplib transfer that
3801 precedes an 1xx response.
3803 - Patch #1355023: support whence argument for GzipFile.seek.
3805 - Patch #1065257: Support passing open files as body in
3806 HTTPConnection.request().
3808 - Bug #1569790: mailbox.py: Maildir.get_folder() and MH.get_folder()
3809 weren't passing the message factory on to newly created Maildir/MH
3812 - Patch #1514543: mailbox.py: In the Maildir class, report errors if
3813 there's a filename clash instead of possibly losing a message.
3814 (Patch by David Watson.)
3816 - Patch #1514544: Try to ensure that messages/indexes have been
3817 physically written to disk after calling .flush() or
3818 .close(). (Patch by David Watson.)
3820 - Patch #1592250: Add elide argument to Tkinter.Text.search.
3822 - Patch #838546: Make terminal become controlling in pty.fork().
3824 - Patch #1351744: Add askyesnocancel helper for tkMessageBox.
3826 - Patch #1060577: Extract list of RPM files from spec file in
3829 - Bug #1586613: fix zlib and bz2 codecs' incremental en/decoders.
3831 - Patch #1583880: fix tarfile's problems with long names and posix/
3834 - Bug #1586448: the compiler module now emits the same bytecode for
3835 list comprehensions as the builtin compiler, using the LIST_APPEND
3838 - Fix codecs.EncodedFile which did not use file_encoding in 2.5.0, and
3839 fix all codecs file wrappers to work correctly with the "with"
3840 statement (bug #1586513).
3842 - Lib/modulefinder.py now handles absolute and relative imports
3845 - Patch #1567274: Support SMTP over TLS.
3847 - Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that ctypes
3848 isn't considered as requiring executable stacks.
3850 - ctypes callback functions only support 'fundamental' data types as
3851 result type. Raise an error when something else is used. This is a
3852 partial fix for Bug #1574584.
3854 - Fix turtle so that time.sleep is imported for the entire library.
3855 Allows the demo2 function to be executed on its own instead of only
3856 when the module is run as a script.
3858 - Bug #813342: Start the IDLE subprocess with -Qnew if the parent is
3859 started with that option.
3861 - Bug #1565150: Fix subsecond processing for os.utime on Windows.
3863 - Support for MSVC 8 was added to bdist_wininst.
3865 - Bug #1446043: correctly raise a LookupError if an encoding name
3866 given to encodings.search_function() contains a dot.
3868 - Bug #1560617: in pyclbr, return full module name not only for
3869 classes, but also for functions.
3871 - Bug #1457823: cgi.(Sv)FormContentDict's constructor now takes
3872 keep_blank_values and strict_parsing keyword arguments.
3874 - Bug #1566602: correct failure of posixpath unittest when $HOME ends
3877 - Bug #1565661: in webbrowser, split() the command for the default
3878 GNOME browser in case it is a command with args.
3880 - Made the error message for time.strptime when the data and
3881 format do match be more clear.
3883 - Fix a bug in traceback.format_exception_only() that led to an error
3884 being raised when print_exc() was called without an exception set.
3885 In version 2.4, this printed "None", restored that behavior.
3887 - Make webbrowser.BackgroundBrowser usable in Windows (it wasn't
3888 because the close_fds arg to subprocess.Popen is not supported).
3890 - Reverted patch #1504333 to sgmllib because it introduced an infinite
3893 - Patch #1553314: Fix the inspect.py slowdown that was hurting IPython
3894 & SAGE by adding smarter caching in inspect.getmodule()
3896 - Fix missing import of the types module in logging.config.
3898 - Patch #1550886: Fix decimal module context management implementation
3899 to match the localcontext() example from PEP 343.
3901 - Bug #1545341: The 'classifier' keyword argument to the Distutils
3902 setup() function now accepts tuples as well as lists.
3904 - Bug #1541863: uuid.uuid1 failed to generate unique identifiers on
3905 systems with low clock resolution.
3907 - Bug #1531862: Do not close standard file descriptors in subprocess.
3909 - idle: Honor the "Cancel" action in the save dialog (Debian bug
3912 - Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
3913 the first chunk fed to the decoder started with a BOM, but was
3914 longer than 3 bytes.
3916 - The implementation of UnicodeError objects has been simplified
3917 (start and end attributes are now stored directly as Py_ssize_t
3920 - Issue #829951: In the smtplib module, SMTP.starttls() now complies
3921 with RFC 3207 and forgets any knowledge obtained from the server not
3922 obtained from the TLS negotiation itself. Patch contributed by Bill
3925 - Issue #1339: The smtplib.SMTP class has been refactored a bit such
3926 that the SMTP.starttls() caller no longer needs to call ehlo()
3927 beforehand. SMTP.starttls() now raises an exception of the server
3928 does not claim to support starttls. Adds the
3929 SMTP.ehlo_or_helo_if_needed() method. Patch contributed by Bill
3932 - Patch #1089358: Add signal.siginterrupt, a wrapper around
3938 - Patch #1657: added select.epoll and select.kqueue.
3940 - Patch #1506171: added operator.methodcaller().
3942 - Patch #1826: operator.attrgetter() now supports dotted attribute paths.
3944 - Patch #1957: syslogmodule: Release GIL when calling syslog(3).
3946 - Bug #2112: mmap.error is now a subclass of EnvironmentError and not
3947 a direct EnvironmentError.
3949 - Bug #2111: mmap segfaults when trying to write a block opened with
3952 - Bug #2063: correct order of utime and stime in os.times() result on
3955 - Patch #1736: Fix file name handling of _msi.FCICreate.
3957 - Updated ``big5hkscs`` codec to the HKSCS revision of 2004.
3959 - Issue #1940: make it possible to use curses.filter() before
3960 curses.initscr() as the documentation says.
3962 - Backport of _fileio module from Python 3.0.
3964 - Patch #1087741: mmap.mmap is now a class, not a factory function. It
3965 is also subclassable now.
3967 - Patch #1648: added ``sys.getprofile()`` and ``sys.gettrace()``.
3969 - Patch #1663329: added ``os.closerange()`` function to quickly close
3970 a range of file descriptors without considering errors.
3972 - Patch #976880: ``mmap`` objects now have an ``rfind`` method that
3973 works as expected. ``mmap.find`` also takes an optional ``end``
3976 - _winreg's HKEY object has gained __enter__ and __exit__ methods to
3977 support the context manager protocol. The _winreg module also
3978 gained a new function ``ExpandEnvironmentStrings`` to expand
3981 - itertools.starmap() now accepts any iterable input. Previously, it
3982 required the function inputs to be tuples.
3984 - itertools.chain() now has an alternate constructor,
3985 chain.from_iterable().
3987 - Issue #1646: Make socket support TIPC. The socket module now has
3988 support for TIPC under Linux, see http://tipc.sf.net/ for more
3991 - Added interface for Windows' WSAIoctl to socket object and added an
3992 example for a simple network sniffer.
3994 - Bug #1301: Bad assert in _tkinter fixed.
3996 - Added bdist_wininst executable for VS 2008.
3998 - Bug #1604: collections.deque.__init__(iterable) now clears any prior
3999 contents before adding elements from the iterable. This fix brings
4000 the behavior into line with that for list.__init__().
4002 - Added wide char functions to msvcrt module: getwch, getwche, putwch
4003 and ungetwch. The functions accept or return unicode.
4005 - os.access now returns True on Windows for any existing directory.
4007 - Added warnpy3k function to the warnings module.
4009 - Marshal.dumps() now expects exact type matches for int, long, float,
4010 complex, tuple, list, dict, set, and frozenset. Formerly, it would
4011 silently miscode subclasses of those types. Now, it raises a
4014 - Patch #1388440: Add set_completion_display_matches_hook and
4015 get_completion_type to readline.
4017 - Bug #1649098: Avoid declaration of zero-sized array declaration in
4020 - Removed the rgbimg module; been deprecated since Python 2.5.
4022 - Bug #1721309: prevent bsddb module from freeing random memory.
4024 - Bug #1233: fix bsddb.dbshelve.DBShelf append method to work as
4025 intended for RECNO databases.
4027 - pybsddb.sf.net Bug #477182: Load the database flags at database open
4028 time so that opening a database previously created with the DB_DUP
4029 or DB_DUPSORT flag set will keep the proper behavior on subsequent
4030 opens. Specifically: dictionary assignment to a DB object will
4031 replace all values for a given key when the database allows
4032 duplicate values. DB users should use DB.put(k, v) when they want
4033 to store duplicates; not DB[k] = v.
4035 - Add the bsddb.db.DBEnv.lock_id_free method.
4037 - Bug #1686475: Support stat'ing open files on Windows again.
4039 - Patch #1185447: binascii.b2a_qp() now correctly quotes binary
4040 characters with ASCII value less than 32. Also, it correctly quotes
4041 dots only if they occur on a single line, as opposed to the previous
4042 behavior of quoting dots if they are the second character of any
4045 - Bug #1622896: fix a rare corner case where the bz2 module raised an
4046 error in spite of a succesful compression.
4048 - Patch #1654417: make operator.{get,set,del}slice use the full range
4051 - Patch #1646728: datetime.fromtimestamp fails with negative
4052 fractional times. With unittest.
4054 - Patch #1490190: posixmodule now includes os.chflags() and
4055 os.lchflags() functions on platforms where the underlying system
4056 calls are available.
4058 - Patch #1494140: Add documentation for the new struct.Struct object.
4060 - Patch #1432399: Support the HCI protocol for bluetooth sockets
4062 - Patch #1657276: Make NETLINK_DNRTMSG conditional.
4064 - Bug #1653736: Complain about keyword arguments to time.isoformat.
4066 - Bug #1486663: don't reject keyword arguments for subclasses of
4069 - Patch #1610575: The struct module now supports the 't' code, for C99
4072 - Patch #1635058: ensure that htonl and friends never accept or return
4073 negative numbers, per the underlying C implementation.
4075 - Patch #1544279: Improve thread-safety of the socket module by moving
4076 the sock_addr_t storage out of the socket object.
4078 - Patch #1019808: fix bug that causes an incorrect error to be
4079 returned when a socket timeout is set and a connection attempt
4082 - Speed up function calls into the math module.
4084 - Bug #1588217: don't parse "= " as a soft line break in binascii's
4085 a2b_qp() function, instead leave it in the string as quopri.decode()
4088 - Bug #1599782: Fix segfault on bsddb.db.DB().type().
4090 - Bug #1567666: Emulate GetFileAttributesExA for Win95.
4092 - Patch #1576166: Support os.utime for directories on Windows NT+.
4094 - Patch #1572724: fix typo ('=' instead of '==') in _msi.c.
4096 - Bug #1572832: fix a bug in ISO-2022 codecs which may cause segfault
4097 when encoding non-BMP unicode characters.
4099 - Bug #1556784: allow format strings longer than 127 characters in
4100 datetime's strftime function.
4102 - Fix itertools.count(n) to work with negative numbers again.
4104 - RLIMIT_SBSIZE was added to the resource module where available.
4106 - Bug #1551427: fix a wrong NULL pointer check in the win32 version of
4109 - Bug #1548092: fix curses.tparm seg fault on invalid input.
4111 - Patch #1114: fix curses module compilation on 64-bit AIX, & possibly
4112 other 64-bit LP64 platforms where attr_t is not the same size as a
4113 long. (Contributed by Luke Mewburn.)
4115 - Bug #1550714: fix SystemError from itertools.tee on negative value
4118 - Fixed a few bugs on cjkcodecs:
4119 - gbk and gb18030 codec now handle U+30FB KATAKANA MIDDLE DOT
4121 - iso2022_jp_2 codec now encodes into G0 for KS X 1001, GB2312
4122 codepoints to conform the standard.
4123 - iso2022_jp_3 and iso2022_jp_2004 codec can encode JIS X 0213:2
4126 - Bug #1552726: in readline.c, avoid repeatedly polling in interactive
4127 mode by only placing a timeout on the select() if an input hook has
4128 been defined. This prevents an interactive Python from waking up 10
4129 times per second. Patch by Richard Boulton.
4131 - fixed a bug with bsddb.DB.stat: the flags and txn keyword arguments
4134 - Added support for linking the bsddb module against BerkeleyDB 4.5.x,
4137 - Bug #1633621: if curses.resizeterm() or curses.resize_term() is
4138 called, update _curses.LINES, _curses.COLS, curses.LINES and
4141 - Fix an off-by-one bug in locale.strxfrm().
4143 - Fix libffi configure for hppa*-*-linux* | parisc*-*-linux*.
4145 - Build using system ffi library on arm*-linux*.
4147 - Bug #1372: zlibmodule.c: int overflow in PyZlib_decompress
4149 - bsddb module: Fix memory leak when using database cursors on
4150 databases without a DBEnv.
4152 - The sqlite3 module was updated to pysqlite 2.4.1.
4157 - Refactor test_logging to use unittest.
4159 - Refactor test_profile and test_cprofile to use the same code to
4162 - Make test_runpy reentrant by fixing _check_module to clear out any
4163 module being tested. Was causing an error by __import__ doing a
4164 reload on the second run and thus suppressing bytecode recreation.
4166 - Capture socket connection resets and timeouts in test_socket_ssl and
4167 test_urllib2net and raise test.test_support.ResourceDenied.
4169 - Patch #1559413: Fix test_cmd_line if sys.executable contains a
4172 - Added test.test_support.TransientResource which is a context manager
4173 to surround calls to resources that are not guaranteed to work even
4174 if test.test_support.requires says that the resource should exist.
4176 - Added a test for slicing of an exception.
4178 - Added test.test_support.EnvironmentVarGuard. It's a class that
4179 provides a context manager so that one can temporarily set or unset
4180 environment variables.
4182 - Added some tests for modulefinder.
4184 - Converted test_imp to use unittest.
4186 - Fix bsddb test_basics.test06_Transactions to check the version
4189 - test.test_support.catch_warning is a new context manager that can be
4190 used to catch the warnings issued by the warning framework.
4195 - Tools/scripts/reindent.py now creates the backup file using
4196 shutil.copy to preserve user/group and permissions. Added also a
4197 --nobackup option to not create the backup if the user is concerned
4198 regarding this. Check issue 1050828 for more details.
4200 - Tools/scripts/win_add2path.py was added. The simple script modifes
4201 the PATH environment var of the HKCU tree and adds the python bin
4202 and script directory.
4204 - Tools/18n/pygettext.py was added to the list of scripts installed by
4205 Tools/scripts/setup.py (tracker item 642309).
4207 - Added IronPython and Jython support to pybench (part of which was
4210 - Made some minor changes to pybench output to allow the user to see
4211 which Python version is running pybench.
4213 - Added support for the new platform module feature
4214 platform.python_implementation(); this will now be saved in the
4221 - RFE #1765140: Updated documentation on FileHandler and subclasses to
4222 include new optional delay argument.
4224 - Bug #932563: Added section on getting contextual information into
4225 logging output, and added documentation for the new LoggerAdapter
4228 - Bug #1295: Added information about caching of formatted exception
4229 information in the LogRecord by Formatter.format().
4231 - Bug #1637365: add subsection about "__name__ == __main__" to the
4234 - Patch #1698768: updated the "using Python on the Mac" intro.
4236 - Bug #1569057: Document that calling file.next() when the file is
4237 open for writing is undefined.
4239 - Patch #1489771: the syntax rules in Python Reference Manual were
4240 updated to reflect the current Python syntax.
4242 - Patch #1686451: Fix return type for
4243 PySequence_{Count,Index,Fast_GET_SIZE}.
4245 - Patch #1679379: add documentation for fnmatch.translate().
4247 - Bug #1629566: clarify the docs on the return values of parsedate()
4248 and parsedate_tz() in email.utils and rfc822.
4250 - Patch #1671450: add a section about subclassing builtin types to the
4251 "extending and embedding" tutorial.
4253 - Bug #1629125: fix wrong data type (int -> Py_ssize_t) in PyDict_Next
4256 - Bug #1565919: document set types in the Language Reference.
4258 - Bug #1546052: clarify that PyString_FromString(AndSize) copies the
4259 string pointed to by its parameter.
4261 - Bug #1566663: remove obsolete example from datetime docs.
4263 - Bug #1541682: Fix example in the "Refcount details" API docs.
4264 Additionally, remove a faulty example showing PySequence_SetItem
4265 applied to a newly created list object and add notes that this isn't
4272 - Patch #1552024: add decorator support to unparse.py demo script.
4274 - Make auto-generated python.vim file list built-ins and exceptions in
4275 alphatbetical order. Makes output more deterministic and easier to
4276 tell if the file is stale or not.
4278 - Bug #1546372: Fixed small bugglet in pybench that caused a missing
4279 file not to get reported properly.
4285 - Have the search path for building extensions follow the declared
4286 order in $CPPFLAGS and $LDFLAGS when adding directories from those
4287 environment variables.
4289 - Bug #1983: Added a check to pyport to verify that sizeof(pid_t) is
4290 smaller or equal sizeof(long).
4292 - Bug #1234: Fixed semaphore errors on AIX 5.2
4294 - Issue #1726: Remove Python/atof.c from PCBuild/pythoncore.vcproj.
4296 - Removed PCbuild8/ directory and added a new build directory for VS
4297 2005 based on the VS 2008 build directory to PC/VS8.0. The script
4298 PCbuild/vs8to9.py was added to sync changes from PCbuild to
4301 - Moved PCbuild/ directory for VS 2003 to PC/VS7.1 and renamed
4302 PCBuild9/ directory to PCBuild/.
4304 - Bug #1699: Define _BSD_SOURCE only on OpenBSD.
4306 - Bug #1608: use -fwrapv when GCC supports it. This is important,
4307 newer GCC versions may optimize away overflow buffer overflow checks
4308 without this option!
4310 - Patch #1418: Make the AC_REPLACE_FUNCS object files actually work.
4312 - Add a FAST_LOOPS build option that speeds-up looping by trading away
4313 periodic threadstate and signal checking in tight loops. By
4314 default, this option is turned-off. It should only be enabled in
4315 debugged, performance critical applications.
4317 - Patch #786737: Allow building in a tree of symlinks pointing to a
4320 - Bug #1737210: Change Manufacturer of Windows installer to PSF.
4322 - Bug #1746880: Correctly install DLLs into system32 folder on Win64.
4324 - Define _BSD_SOURCE, to get access to POSIX extensions on OpenBSD
4327 - Stop supporting AtheOS and cause a build error in configure for the
4330 - Bug #1655392: don't add -L/usr/lib/pythonX.Y/config to the LDFLAGS
4331 returned by python-config if Python was built with --enable-shared
4332 because that prevented the shared library from being used.
4334 - Patch #1569798: fix a bug in distutils when building Python from a
4335 directory within sys.exec_prefix.
4337 - Bug #1675511: Use -Kpic instead of -xcode=pic32 on Solaris/x86.
4339 - Disable _XOPEN_SOURCE on NetBSD 1.x.
4341 - configure now checks whether gcc supports the PyArg_ParseTuple
4344 - Bug #1578513: Cross compilation was broken by a change to configure.
4345 Repair so that it's back to how it was in 2.4.3.
4347 - Patch #1576954: Update VC6 build directory; remove redundant files
4350 - Bug #1568842: Fix test for uintptr_t.
4352 - Patch #1540470: for OpenBSD 4.0.
4354 - Fix build failure on kfreebsd and on the hurd.
4356 - Fix the build of the library reference in info format.
4358 - Allow Emacs 22 for building the documentation in info format.
4360 - Makefile.pre.in(buildbottest): Run an optional script
4361 pybuildbot.identify to include some information about the build
4368 - Unified naming convention for free lists and their limits. All free
4369 lists in Object/ are named ``free_list``, the counter ``numfree``
4370 and the upper limit is a macro ``PyName_MAXFREELIST`` inside an
4373 - ``PySet_Add()`` can now modify a newly created frozenset. Similarly
4374 to ``PyTuple_SetItem``, it can be used to populate a brand new
4375 frozenset; but it does not steal a reference to the added item.
4377 - Added ``PySet_Check()`` and ``PyFrozenSet_Check()`` to the set API.
4379 - Backport of PyUnicode_FromString(), _FromStringAndSize(), _Format
4380 and _FormatV from Python 3.0. Made PyLong_AsSsize_t and
4381 PyLong_FromSsize_t public functions.
4383 - Patch #1720595: add T_BOOL to the range of structmember types.
4385 - Issue #1534: Added ``PyFloat_GetMax()``, ``PyFloat_GetMin()`` and
4386 ``PyFloat_GetInfo()`` to the float API.
4388 - Issue #1521: On 64bit platforms, using PyArgs_ParseTuple with the t#
4389 of w# format code incorrectly truncated the length to an int, even
4390 when PY_SSIZE_T_CLEAN is set. The str.decode method used to return
4391 incorrect results with huge strings.
4393 - Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
4394 Py_TYPE and Py_REFCNT.
4396 - PEP 3123: Provide forward compatibility with Python 3.0, while
4397 keeping backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size,
4398 and PyVarObject_HEAD_INIT.
4400 - Py_ssize_t fields work in structmember when HAVE_LONG_LONG is not
4403 - Patch #1733960: Allow T_LONGLONG to accept ints.
4405 - T_PYSSIZET can now be used in PyMemberDef lists for Py_ssize_t members.
4407 - Added a new API function ``PyImport_ImportModuleNoBlock``.
4409 - Bug #1637022: Prefix AST symbols with _Py_.
4411 - Fix some leftovers from the conversion from int to Py_ssize_t
4412 (relevant to strings and sequences of more than 2**31 items).
4414 - Make _PyGILState_NoteThreadState() static, it was not used anywhere
4415 outside of pystate.c and should not be necessary.
4417 - ``PyImport_Import`` and ``PyImport_ImportModule`` now always do
4418 absolute imports. In earlier versions they might have used relative
4419 imports under some conditions.
4421 - Added case insensitive comparison methods ``PyOS_stricmp(char*,
4422 char*)`` and ``PyOS_strnicmp(char*, char*, Py_ssize_t)``.
4424 - Bug #1542693: remove semi-colon at end of PyImport_ImportModuleEx
4425 macro so it can be used as an expression.
4431 - Patch #1706: Drop support for Win9x, WinME and NT4. Python now
4432 requires Windows 2000 or greater. The _WINVER and NTDDI_VERSION
4433 macros are set to Win2k for x86/32bit builds and WinXP for AMD64
4436 - Conditionalize definition of _CRT_SECURE_NO_DEPRECATE and
4437 _CRT_NONSTDC_NO_DEPRECATE.
4439 - Bug #1216: Restore support for Visual Studio 2002.
4445 - cfmfile now raises a DeprecationWarning.
4447 - buildtools now raises a DeprecationWarning.
4449 - Removed the macfs module. It had been deprecated since Python 2.5.
4450 This lead to the deprecation of macostools.touched() as it relied
4451 solely on macfs and was a no-op under OS X.
4455 **(For information about older versions, consult the HISTORY file.)**