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 #4978: Passing keyword arguments as unicode strings is now allowed.
17 - os.ftruncate raises OSErrors instead of IOErrors for consistency with other os
20 - Issue #4991: Passing invalid file descriptors to io.FileIO now raises an
23 - Issue #4807: Port the _winreg module to Windows CE.
25 - Issue #4935: The overflow checking code in the expandtabs() method common
26 to str, bytes and bytearray could be optimized away by the compiler, letting
27 the interpreter segfault instead of raising an error.
29 - Issue #3720: Fix a crash when an iterator modifies its class and removes its
32 - Issue #4893: Use NT threading on CE.
34 - Issue #4915: Port sysmodule to Windows CE.
36 - Issue #4074: Change the criteria for doing a full garbage collection (i.e.
37 collecting the oldest generation) so that allocating lots of objects without
38 destroying them does not show quadratic performance. Based on a proposal by
40 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
42 - Issue #4850: Change COUNT_ALLOCS variables to Py_ssize_t.
44 - Issue #1180193: When importing a module from a .pyc (or .pyo) file with
45 an existing .py counterpart, override the co_filename attributes of all
46 code objects if the original filename is obsolete (which can happen if the
47 file has been renamed, moved, or if it is accessed through different paths).
48 Patch by Ziga Seilnacht and Jean-Paul Calderone.
50 - Issue #4075: Use OutputDebugStringW in Py_FatalError.
52 - Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
53 file with `str' filename on Windows.
55 - Issue #3680: Reference cycles created through a dict, set or deque iterator
56 did not get collected.
58 - Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
59 where the tp_hash and tp_dict slots are both NULL.
61 - Issue #4764: With io.open, IOError.filename is set when trying to open a
62 directory on POSIX systems.
64 - Issue #4764: IOError.filename is set when trying to open a directory on POSIX
67 - Issue #4759: None is now allowed as the first argument of
68 bytearray.translate(). It was always allowed for bytes.translate().
70 - Added test case to ensure attempts to read from a file opened for writing
73 - Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
74 print elapsed times, not only when some objects are uncollectable /
75 unreachable. Original patch by Neil Schemenauer.
77 - Issue #3439: Add a bit_length method to int and long.
79 - Issue #2183: Simplify and optimize bytecode for list comprehensions.
80 Original patch by Neal Norwitz.
82 - Issue #4597: Fixed exception handling when the __exit__ function of a
83 context manager returns a value that cannot be converted to a bool.
85 - Issue #4597: Fixed several opcodes that weren't always propagating
88 - Issue #4445: Replace "sizeof(PyStringObject)" with
89 "offsetof(PyStringObject, ob_sval) + 1" when allocating memory for
90 str instances. On a typical machine this saves 3 bytes of memory
91 (on average) per string allocation.
93 - Issue #3996: On Windows, the PyOS_CheckStack function would cause the
94 interpreter to abort ("Fatal Python error: Could not reset the stack!")
95 instead of throwing a MemoryError.
97 - Issue #3689: The list reversed iterator now supports __length_hint__
98 instead of __len__. Behavior now matches other reversed iterators.
100 - Issue #4367: Python would segfault during compiling when the unicodedata
101 module couldn't be imported and \N escapes were present.
103 - Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
104 method on file objects with closefd=False. The file descriptor is still
105 kept open but the file object behaves like a closed file. The ``FileIO``
106 object also got a new readonly attribute ``closefd``.
108 - Issue #4348: Some bytearray methods returned that didn't cause any change to
109 the bytearray, returned the same bytearray instead of a copy.
111 - Issue #4317: Fixed a crash in the imageop.rgb2rgb8() function.
113 - Issue #4230: If ``__getattr__`` is a descriptor, it now functions correctly.
115 - Issue #4048: The parser module now correctly validates relative imports.
117 - Issue #4225: ``from __future__ import unicode_literals`` didn't work in an
120 - Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
121 method does not return iterators for the 4th and 5th items.
123 - Issue #4209: Enabling unicode_literals and the print_function in the same
124 __future__ import didn't work.
126 - Using ``nonlocal`` as a variable name will now raise a Py3k SyntaxWarning
127 because it is a reserved word in 3.x.
129 - On windows, os.chdir given unicode was not working if GetCurrentDirectoryW
130 returned a path longer than MAX_PATH. (But It's doubtful this code path is
131 really executed because I cannot move to such directory on win2k)
133 - Issue #4069: When set.remove(element) is used with a set element, the element
134 is temporarily replaced with an equivalent frozenset. But the eventual
135 KeyError would always report the empty frozenset([]) as the missing key. Now
136 it correctly refers to the initial element.
138 - Issue #4509: Various issues surrounding resize of bytearray objects to
139 which there are buffer exports.
141 - Issue #4748: Lambda generators no longer return a value.
143 - Issue #3582: Use native TLS functions on Windows
148 - Issue #5013: Fixed a bug in FileHandler which occurred when the delay
151 - Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
152 which inherited from numbers.py which did not have __slots__ defined. The
153 numbers heirarchy now has its own __slots__ declarations.
155 - Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
156 for *nix machines for negative handles and large int handles. Without this check
157 it is possible to segfault the interpreter.
159 - Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
162 - Issue #1225107: inspect.isclass() returned True for instances with a custom
165 - Issue #3997: zipfiles generated with more than 65536 files could not be
166 opened with other applications.
168 - Issue #1162154: inspect.getmembers() now skips attributes that raise
169 AttributeError, e.g. a __slots__ attribute which has not been set.
171 - Issue #1696199: Add collections.Counter() for rapid and convenient
174 - Issue #3860: GzipFile and BZ2File now support the context manager protocol.
176 - Issue #4272: Add an optional argument to the GzipFile constructor to override
177 the timestamp in the gzip stream. The default value remains the current time.
178 The information can be used by e.g. gunzip when decompressing. Patch by
181 - Restore Python 2.3 compatibility for decimal.py.
183 - Issue #1702551: distutils sdist was not excluding VCS directories under
184 Windows. Inital solution by Guy Dalberto.
186 - The _tkinter module functions "createfilehandler", "deletefilehandler",
187 "createtimerhandler", "mainloop", "dooneevent" and "quit" have been
188 deprecated for removal in 3.x
190 - Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
191 to the decimal module.
193 - Issue #4812: add missing underscore prefix to some internal-use-only
194 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
196 - Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
197 the function is not a generator.
199 - Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
200 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
202 - Issue #4646: distutils was choking on empty options arg in the setup
203 function. Original patch by Thomas Heller.
205 - Fractions.from_float() no longer loses precision for integers too big to
208 - Issue 4790: The nsmallest() and nlargest() functions in the heapq module
209 did unnecessary work in the common case where no key function was specified.
211 - Issue #3767: Convert Tk object to string in tkColorChooser.
213 - Issue #3248: Allow placing ScrolledText in a PanedWindow.
215 - Issue #4444: Allow assertRaises() to be used as a context handler, so that
216 the code under test can be written inline if more practical.
218 - Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
219 works as expected in the interactive environment.
221 - Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
224 - Issue #4400: .pypirc default generated file was broken in distutils.
226 - Issue #4736: io.BufferedRWPair's closed property now functions properly.
228 - Issue #3954: Fix a potential SystemError in _hotshot.logreader error
231 - Issue #4574: fix a crash in io.IncrementalNewlineDecoder when a carriage
232 return encodes to more than one byte in the source encoding (e.g. UTF-16)
233 and gets split on a chunk boundary.
235 - Issue #4223: inspect.getsource() will now correctly display source code
236 for packages loaded via zipimport (or any other conformant PEP 302
237 loader). Original patch by Alexander Belopolsky.
239 - Issue #4201: pdb can now access and display source code loaded via
240 zipimport (or any other conformant PEP 302 loader). Original patch by
241 Alexander Belopolsky.
243 - Issue #4197: doctests in modules loaded via zipimport (or any other PEP
244 302 conformant loader) will now work correctly in most cases (they
245 are still subject to the constraints that exist for all code running
246 from inside a module loaded via a PEP 302 loader and attempting to
247 perform IO operations based on __file__). Original patch by
248 Alexander Belopolsky.
250 - Issues #4082 and #4512: Add runpy support to zipimport in a manner that
251 allows backporting to maintenance branches. Original patch by
252 Alexander Belopolsky.
254 - Issue #4163: Use unicode-friendly word splitting in the textwrap functions
255 when given an unicode string.
257 - Issue #4616: TarFile.utime(): Restore directory times on Windows.
259 - Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
260 give correct results in the case where one argument is a quiet NaN
261 and the other is a finite number that requires rounding.
263 - Issue #1030250: Distutils created directories even when run with the
266 - Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
269 - Issue #4529: fix the parser module's validation of try-except-finally
272 - Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
273 not a malformed option.
275 - Added the subprocess.check_output() convenience function to get output
276 from a subprocess on success or raise an exception on error.
278 - Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
279 support unusual filenames (such as those containing semi-colons) in
280 Content-Disposition headers.
282 - Issue #4384: Added logging integration with warnings module using
283 captureWarnings(). This change includes a NullHandler which does nothing;
284 it will be of use to library developers who want to avoid the "No handlers
285 could be found for logger XXX" message which can appear if the library user
286 doesn't configure logging.
288 - Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
291 - Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
292 the ctypes module is not present.
294 - FileIO's mode attribute now always includes ``"b"``.
296 - Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
298 - httplib.HTTPConnection.putheader() now accepts an arbitrary number of values
299 for any header, matching what the documentation has claimed for a while.
301 - Issue #3774: Fixed an error when create a Tkinter menu item without command
304 - Fixed a modulefinder crash on certain relative imports.
306 - Issue #4150: Pdb's "up" command now works for generator frames in post-mortem
309 - Issue #4092: Return ArgInfo as promised in the documentation from
310 inspect.getargvalues.
312 - Issue #3935: Properly support list subclasses in bisect's C implementation.
314 - Issue #4014: Don't claim that Python has an Alpha release status, in addition
315 to claiming it is Mature.
317 - Issue #4730: Fixed the cPickle module to handle correctly astral characters
318 when protocol 0 is used.
320 - Issue #1594: MacOS.GetCreatorAndType now always returns a big-endian result,
321 to be consistent with Apple tools.
323 - Issue #900949: plat-mac/videoreader.py no longer relies on a non-existing
326 - Issue #16278952: plat-mac/videoreader.py now correctly imports MediaDescr
328 - Issue #1737832 : plat-mac/EasyDialog.py no longer uses the broken aepack
331 - Issue #1149804: macostools.mkdirs now even works when another process
332 creates one of the needed subdirectories.
334 - Issue #900506: added --no-zipimport flag to the bundlebuilder script
336 - Issue #841800: bundlebuilder now works with 'python -O'
338 - Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
339 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
344 - Issue #4677: add two list comprehension tests to pybench.
349 - Issue #4895: Use _strdup on Windows CE.
351 - Issue #4472: "configure --enable-shared" now works on OSX
353 - Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
355 - Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
357 - Issue #4289: Remove Cancel button from AdvancedDlg.
359 - Issue #1656675: Register a drop handler for .py* files on Windows.
361 - Issue #4120: Exclude manifest from extension modules in VS2008.
363 - Issue #4091: Install pythonxy.dll in system32 again.
365 - Issue #4018: Disable "for me" installations on Vista.
367 - Issue #3758: Add ``patchcheck`` build target to .PHONY.
369 - Issue #4204: Fixed module build errors on FreeBSD 4.
374 - Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
376 - Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
377 the GIL is released, or owned by another thread.
379 - Issue #4122: On Windows, fix a compilation error when using the
380 Py_UNICODE_ISSPACE macro in an extension module.
382 - Issue #4293: Py_AddPendingCall is now thread safe and can be used for
383 asynchronous notifications to python from any thread. Documentation added.
388 - Issue #4397: Fix occasional test_socket failure on OS X.
390 - Issue #4279: Fix build of parsermodule under Cygwin.
392 - Issue #4051: Prevent conflict of UNICODE macros in cPickle.
394 - Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
396 - Issue #1040026: Fix os.times result on systems where HZ is incorrect.
398 - Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
401 - Issue #4365: Add crtassem.h constants to the msvcrt module.
403 - Issue #4396: The parser module now correctly validates the with statement.
406 What's New in Python 2.6 final
407 ==============================
409 *Release date: 01-Oct-2008*
414 - Issue #3967: Fixed a crash in the count() and find() methods of string-like
415 objects, when the "start" parameter is a huge value.
417 - Issue #3965: Fixed a crash on Windows when open() is given an invalid
418 filename or mode, and the filename is a unicode string.
420 - Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
425 - Issue #3965: Allow repeated calls to turtle.Screen, by making it a
426 true singleton object.
428 - Issue #3895: It was possible to crash the interpreter when an external timer
429 was used with cProfile that returned an object that could not be converted
432 - Issue #3950: Made turtle respect scale factors.
434 - Issue #3547: Fixed ctypes structures bitfields of varying integer
437 - Issue #3879: A regression in urllib.getproxies_enviroment was fixed.
439 - Issue #3863: Disabled a unit test of fork being called from a thread
440 when running on platforms known to exhibit OS bugs when attempting that.
445 - Bug #3989: Package the 2to3 script (as 2to3.py) in the Windows
448 - Bug #3887: Package x64 version of CRT for AMD64 Windows binaries.
451 What's New in Python 2.6 release candidate 2?
452 =============================================
454 *Release date: 17-Sep-2008*
462 - Security Issue #2: imageop did not validate arguments correctly and could
463 segfault as a result.
465 - Issue #3886: Possible integer overflows in the _hashopenssl module were
471 - Issue #3850: recursion tests in Misc/find_recursion_limit.py can raise
472 AttributeError instead of RuntimeError, depending in which C API call
473 exactly the recursion limit is exceeded. Consequently, both exception types
474 are caught and silenced.
479 - Issue #3617: Include a licensing statement regarding the Microsoft
480 C runtime in the Windows installer.
483 What's New in Python 2.6 release candidate 1?
484 =============================================
486 *Release date: 12-Sep-2008*
491 - Issue #3642: Suppress warning in obmalloc when size_t is larger than uint.
493 - Issue #3743: In a few places, PY_FORMAT_SIZE_T was incorrectly used with
494 PyString_FromFormat or PyErr_Format to display size_t values. The macro
495 PY_FORMAT_SIZE_T is designed to select the correct format for the OS
496 ``printf`` function, whereas PyString_FromFormat has an independent
497 implementation and uses "%zd" on all platforms for size_t values.
498 This makes a difference on win64, where ``printf`` needs "%Id" to display
501 - Issue #3634: _weakref.ref(Exception).__init__() gave invalid return value on
504 - Issue #3777: long() applied to a float object now always return a long
505 object; previously an int would be returned for small values. the __long__
506 method is allowed to return either an int or a long, but the behaviour of
507 float objects should not change to respect backward compatibility.
509 - Issue #3751: str.rpartition would perform a left-partition when called with
512 - Issue #3683: Fix compilation when --without-threads is given.
514 - Issue #3668: Fix a memory leak with the "s*" argument parser in
515 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
516 was correctly parsed but parsing of subsequent arguments failed.
518 - Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
519 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
520 mechanism. In the process, fix a bug where isinstance() and issubclass(),
521 when given a tuple of classes as second argument, were looking up
522 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
525 - Fix crashes on memory allocation failure found with failmalloc.
527 - Fix memory leaks found with valgrind and update suppressions file.
529 - Fix compiler warnings in opt mode which would lead to invalid memory reads.
531 - Fix problem using wrong name in decimal module reported by pychecker.
533 - Silenced another compiler warning about a used but not defined
534 function 'stringlib_contains_obj'.
536 - Added warnings on the use of ``__getslice__``, ``__setslice__``, or
539 - Issue #3678: Correctly pass LDFLAGS and LDLAST to the linker on shared
540 library targets in the Makefile.
542 - Issue #1204: The configure script now tests for additional libraries
543 that may be required when linking against readline. This fixes issues
544 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
549 - Aliased PyObject_Bytes to PyObject_Str.
554 - Issue #3640: Pickling a list or a dict uses less local variables, to reduce
555 stack usage in the case of deeply nested objects.
557 - Issue #3629: Fix sre "bytecode" validator for an end case.
559 - Issue #3811: The Unicode database was updated to 5.1.
561 - Issue #3781: Further warnings.catch_warnings() cleanup to prevent
562 silent misbehaviour when a single instance is nested in multiple
563 with statements, or when the methods are invoked in the wrong order.
565 - Issue #3809: Fixed spurious 'test.blah' file left behind by test_logging.
567 - Issue #3781: Clean up the API for warnings.catch_warnings() by having it
568 return a list or None rather than a custom object.
570 - Issue #1638033: Cookie.Morsel gained the httponly attribute.
572 - Issue #3535: zipfile couldn't read some zip files larger than 2GB.
574 - Issue #3776: Deprecate the bsddb package for removal in 3.0.
576 - Issue #3762: platform.architecture() fails if python is lanched via
579 - Issue #3772: Fixed regression problem in StreamHandler.emit().
581 - Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
582 to the urlparse one. Added a PendingDeprecationWarning in the old
583 module, it will be deprecated in the future.
585 - Issue #2562: Fix distutils PKG-INFO writing logic to allow having
586 non-ascii characters and Unicode in setup.py meta-data.
588 - Issue #3726: Allow spaces in separators in logging configuration files.
590 - Issue #3719: platform.architecture() fails if there are spaces in the
591 path to the Python binary.
593 - Issue 3602: Moved test.test_support.catch_warning() to
594 warnings.catch_warnings() along with some API cleanup. Expanding the tests
595 for catch_warnings() also led to an improvement in the raising of a
596 DeprecationWarning related to warnings.warn_explicit().
598 - The deprecation warnings for the old camelCase threading API were removed.
600 - logging: fixed lack of use of encoding attribute specified on a stream.
602 - Silenced a trivial compiler warning in the sqlite module.
604 - Fixed two format strings in the _collections module.
606 - Issue #3703: _fileio.FileIO gave unhelpful error message when trying to open a
609 - Issue #3708: os.urandom no longer goes into an infinite loop when passed a
610 non-integer floating point number.
612 - Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
618 - Issue #4301: Patch the logging module to add processName support, remove
619 _check_logger_class from multiprocessing.
621 - Issue #2975: When compiling several extension modules with Visual Studio 2008
622 from the same python interpreter, some environment variables would grow
625 - Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
626 exploitation of poor argument checking.
628 - sqlite3: Changed docstring of iterdump() to mark method as "Non-standard".
630 - Issue #3103: Reduced globals symbols used by sqlite3 module and made sure all
631 remaining ones have "pysqlite_" prefix.
633 - Issue #3846: Release the GIL during sqlite3_prepare calls. This improves
634 concurrent access to the same SQLite database from multiple
640 - Issue #3781: Add test.test_support.check_warnings() as a convenience
641 wrapper for warnings.catch_warnings() that makes it easier to check
642 that expected warning messages are being reported.
644 - Issue #3796: Some tests functions were not enabled in test_float.
646 - Issue #3768: Move test_py3kwarn over to the new API for catch_warnings().
651 - Issue #3833: Use a different upgrade code for Win64 installers.
653 - Issue #2271: Set SecureCustomProperties so that installation will properly
654 use the TARGETDIR even for unprivileged users.
656 - Allow passing the MSI file name to merge.py.
658 - Issue #3758: Rename the 'check' target to 'patchcheck' so as to not clash
659 with GNU build target guidelines.
662 What's New in Python 2.6 beta 3?
663 ================================
665 *Release date: 20-Aug-2008*
670 - Issue #1878: Remove Py_TPFLAGS_HAVE_VERSION_TAG from
671 Py_TPFLAGS_DEFAULT when not building the core. This means 3rd party
672 extensions do not automatically benefit from the class attribute
673 cache; they will have to explicitly add Py_TPFLAGS_HAVE_VERSION_TAG
674 to their tp_flags field if they care. This is a backwards
675 compatibility feature; in 3.0, all types will use the cache by
678 - Keyword arguments can now follow starred arguments. (``f(a, *args,
679 keyword=23)`` is now valid syntax.)
681 - ctypes function pointers that are COM methods have a boolean True
684 - Issue #3139: Make buffer-interface thread-safe wrt. PyArg_ParseTuple,
685 by denying s# to parse objects that have a releasebuffer procedure,
688 - Issue #3537: Fix an assertion failure when an empty but presized dict
689 object was stored in the freelist.
691 - Issue #1481296: Make long(float('nan')) and int(float('nan')) raise
692 ValueError consistently across platforms.
694 - Issue #3479: On platforms where sizeof(int) is smaller than sizeof(long)
695 (64bit Unix, for example), unichr() would truncate its argument and return
696 u'\x00' for unichr(2**32). Now it properly raises an OverflowError.
698 - Apply security patches from Apple.
700 - Issue #2542: Now that issubclass() may call arbitrary code, ensure that
701 PyErr_ExceptionMatches returns 0 when an exception occurs there.
703 - Issue #1819: function calls with several named parameters are now on
704 average 35% faster (as measured by pybench).
706 - Issue #2378: An unexpected UnboundLocalError or NameError could appear when
707 the python debugger steps into a class statement: the free variables (local
708 variables defined in an outer scope) would be deleted from the outer scope.
710 - Issue #2620: Overflow checking when allocating or reallocating memory
711 was not always being done properly in some python types and extension
712 modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
713 all been updated to perform better checks and places in the code that
714 would previously leak memory on the error path when such an allocation
715 failed have been fixed.
720 - Issue #3612: Added some missing basic types in ctypes.wintypes.
722 - The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
723 symtable.Symbol have been deprecated for removal in 3.0 and the next release.
725 - Issue #2234: distutils failed for some versions of the cygwin compiler. The
726 version reported by these tools does not necessarily follow the python
727 version numbering scheme, so the module is less strict when parsing it.
729 - Issue #2235: Added Py3k warnings for types which will become unhashable
730 under the stricter __hash__ inheritance rules in 3.0. Several types
731 which did not meet the rules for hash invariants and were already
732 unhashable in 3.0 have now been explicitly flagged as unhashable in
733 2.6 as well (collections.Mapping, collections.Set, unittest.TestSuite,
734 xml.dom.minidom.NamedNodeMap, numbers.Number, UserList.UserList)
736 - Update __all__ for cookielib, csv, os, urllib2, and weakref to include things
737 imported into the module but exposed as part of the module's API.
739 - Remove an unneeded import of abc.ABCMeta from 'inspect'.
741 - Remove unneeded imports of 'sys' and 'warnings' from 'io'.
743 - Remove unneeded imports of 'warnings' from shelve, filecmp, and dummy_thread.
745 - Issue #3575: Incremental decoder's decode function now takes bytearray
746 by using 's*' instead of 't#'.
748 - Issue #2222: Fixed reference leak when occured os.rename()
749 fails unicode conversion on 2nd parameter. (windows only)
751 - Issue 2464. urllib2 now supports a malformation in the URL received
754 - Silence the DeprecationWarning raised when importing mimetools in
755 BaseHTTPServer, cgi (and rfc822), httplib.
757 - Issue #2776: fixed small issue when handling an URL with double slash
758 after a 302 response in the case of not going through a proxy.
760 - Issue #2676: in the email package, content-type parsing was hanging on
761 pathological input because of quadratic or exponential behaviour of a
764 - Issue #3476: binary buffered reading through the new "io" library is now
767 - Silence the DeprecationWarning of rfc822 when it is imported by mimetools
768 since mimetools itself is deprecated. Because modules are cached, all
769 subsequent imports of rfc822 will not raise a visible DeprecationWarning.
771 - Issue #3134: shutil referenced undefined WindowsError symbol.
773 - Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
774 menu entries were not deleted.
776 - Copied the implementation of reduce() to _functools.reduce() to have a
777 version that did not raise a DeprecationWarning under -3.
779 - Issue #3205: When iterating over a BZ2File fails allocating memory, raise
780 a MemoryError rather than silently stop the iteration.
782 - Issue #3487: sre "bytecode" validator. Passing invalid "re-bytecode"
783 to _sre.compile() will now be rejected. This should not affect anybody
784 since the re.compile() function never generates invalid re-bytecode.
786 - Issue #3436: Make csv.DictReader's fieldnames attribute a property so that
787 upon first access it can be automatically initialized from the csv file if
788 it wasn't initialized during instantiation.
790 - Issue #2338: Create imp.reload() to help with transitioning to Python 3.0 as
791 the reload() built-in has been removed.
793 - Changed code in the following modules/packages to remove warnings raised
794 while running under the ``-3`` flag: aifc, asynchat, asyncore, bdb, bsddb,
795 ConfigParser, cookielib, csv, difflib, distutils, DocXMLRPCServer, email,
796 filecmp, fileinput, inspect, logging, modulefinder, pdb, pickle, profile,
797 pstats, pydoc, re, rlcompleter, SimpleXMLRPCServer, shelve, socket,
798 subprocess, sqlite3, tarfile, Tkinter, test.test_support, textwrap,
799 threading, tokenize, traceback, urlparse, wsgiref, xml, xmlrpclib.
801 - Issue #3039: Fix tarfile.TarFileCompat.writestr() which always
802 raised an AttributeError.
804 - Issue #2523: Fix quadratic behaviour when read()ing a binary file without
805 asking for a specific length. This problem only affected files opened
806 using the new "io" module, not the built-in open() function.
808 - Issue #3449: Update decimal module to use most recent specification
809 (v. 1.68) and tests (v. 2.58) from IBM.
811 - Issue 3437: Bug fix in robotparser parsing of Allow: lines.
813 - Issue 1592: Improve error reporting when operations are attempted
816 - Deprecate the "ast" parser function aliases.
818 - Issue #3120: On 64-bit Windows the subprocess module was truncating handles.
820 - Issue #3303: Fix a crash in locale.strcoll() when calling it with
823 - Issue #3302: Fix several crashes when calling locale's gettext functions
826 - Issue #3389: Allow resolving dotted names for handlers in logging
829 - Deprecate the sunaudio module for removal in Python 3.0.
831 - Issue #3394: zipfile.writestr sets external attributes when passed a
832 file name rather than a ZipInfo instance, so files are extracted with
833 mode 0600 rather than 000 under Unix.
835 - Issue #1857: subprocess.Popen.poll gained an additional _deadstate keyword
836 argument in python 2.5, this broke code that subclassed Popen to include its
837 own poll method. Fixed my moving _deadstate to an _internal_poll method.
842 - Generate the PatternGrammar pickle during "make install".
847 - Issue #2235: the C API function PyObject_HashNotImplemented and its
848 interaction with the tp_hash slot (added in 2.6b2) are now documented
850 - Issue #643841: The language reference now provides more detailed
851 coverage of the lookup process for special methods. The disclaimers
852 regarding lack of coverage of new-style classes have also been
853 removed, since the coverage is now fairly reasonable.
856 What's New in Python 2.6 beta 2?
857 ================================
859 *Release date: 17-Jul-2008*
864 - Issue #3156: Fix inconsistent behavior of the bytearray type: all
865 its methods now allow for items objects that can be converted to
866 an integer using operator.index().
868 - Issue #3360: Fix incorrect parsing of '020000000000.0', which
869 produced a ValueError instead of giving the correct float.
871 - Issue #3083: Add alternate (#) formatting for bin, oct, hex output
872 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
874 - Issue #3008: the float type has a new instance method 'float.hex'
875 and a new class method 'float.fromhex' to convert floating-point
876 numbers to and from hexadecimal strings, respectively.
878 - Issue #2235: __hash__ is once again inherited by default. To allow
879 collections.Hashable to remain meaningful in the presence of the
880 default hash implementation (object.__hash__), it is now possible
881 to explicit block inheritance of hash by setting __hash__=None at
882 the Python level, or tp_hash=PyObject_HashNotImplemented at the C
885 - Issue #3221: Issue a RuntimeWarning instead of raising SystemError if
886 the parent module cannot be found while performing an absolute import.
887 This means that an incorrectly defined __package__ attribute will
888 now only prevent relative imports in that module rather than causing
889 all imports from that module to fail.
891 - Issue #2517: Allow unicode messages in Exceptions again by correctly
892 bypassing the instance dictionary when looking up __unicode__ on
895 - Issue #3242: Fix a crash inside the print statement, if sys.stdout is
896 set to a custom object whose write() method happens to install
897 another file in sys.stdout.
899 - Issue #3088: Corrected a race condition in classes derived from
900 threading.local: the first member set by a thread could be saved in
901 another thread's dictionary.
903 - Issue #3004: Minor change to slice.indices(): the start and stop
904 arguments are now treated identically, making the behaviour easier
905 to describe and understand. For example, slice(None, -10,
906 1).indices(9) now returns (0, 0, 1) instead of (0, -1, 1), and
907 slice(None, 10, -1).indices(10) returns (9, 9, -1) instead of (9,
910 - Issue #3219: Calling a function with repeated keyword arguments,
911 f(a=2, a=23), would not cause a syntax error. This was a regression
912 from 2.4 caused by the switch to the new compiler.
914 - Issue #2862: Make int and float freelist management consistent with
915 other freelists. Changes their CompactFreeList apis into
916 ClearFreeList apis and calls them via gc.collect().
921 - Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
922 api functions without holding the GIL, which could lead to a fatal
923 error when they failed.
925 - Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
927 - Issue #3395: fix reference in test_multiprocessing to old debugInfo method
929 - Issue #3312: Fix two crashes in sqlite3.
931 - Issue #1608818: Fix misbehavior in os.listdir() if readdir() fails.
933 - Issue #3125: Remove copy_reg in multiprocessing and replace it with
934 ForkingPickler.register() to resolve conflict with ctypes.
936 - Issue #3090: Fixed ARCHFLAGS parsing on OS/X
938 - Issue #3313: Fixed a crash when a failed dlopen() call does not set
939 a valid dlerror() message.
941 - Issue #3258: Fixed a crash when a ctypes POINTER type to an
942 incomplete structure was created.
944 - Issue #3339: dummy_thread.acquire() should not return None.
946 - Issue #3285: Fractions from_float() and from_decimal() accept Integral arguments.
948 - Issue #3301: Bisect module behaved badly when lo was negative.
950 - Issue #839496: SimpleHTTPServer used to open text files in text mode. This is
951 both unnecessary (HTTP allows text content to be sent in several forms) and
952 wrong because the actual transmitted size could differ from the
953 content-length. The problem had been corrected in the 2.4 branch, but never
956 - Issue #2663: add filtering capability to shutil.copytree().
958 - Issue #1622: Correct interpretation of various ZIP header fields.
960 - Issue #1526: Allow more than 64k files to be added to Zip64 file.
962 - Issue #1746: Correct handling of zipfile archive comments (previously
963 archives with comments over 4k were flagged as invalid). Allow writing
964 Zip files with archives by setting the 'comment' attribute of a ZipFile.
966 - Issue #449227: The rlcompleter module now adds "(" to callable objects
969 - Issue #3190: Pydoc now hides the automatic module attribute __package__ (the
970 handling is now the same as that of other special attributes like __name__).
972 - Issue #2885 (partial): The urllib.urlopen() function has been deprecated for
973 removal in Python 3.0 in favor of urllib2.urlopen().
975 - Issue #2113: Fix error in subprocess.Popen if the select system call is
976 interrupted by a signal.
978 - Issue #3309: Fix bz2.BZFile iterator to release its internal lock
979 properly when raising an exception due to the bz2file being closed.
982 - Issue #3094: httplib.HTTPSConnection Host: headers no longer include the
983 redundant ":443" port number designation when the connection is using the
984 default https port (443).
986 - Issue #874900: after an os.fork() call the threading module state is cleaned
987 up in the child process to prevent deadlock and report proper thread counts
988 if the new process uses the threading module.
993 - test.test_support.catch_warning now keeps track of all warnings it sees
994 and is now better documented. Explicit unit tests for this context manager
995 have been added to test_warnings.
1000 - Issue #3215: Build sqlite3 as sqlite3.dll, not sqlite3.pyd.
1006 - Document that robotparser has been renamed to urllib.robotparser in
1009 - Document that urlparse has been renamed to urllib.parse in Python 3.0.
1011 - Document that urllib2 is split across multiple modules and renamed in
1014 - Document that urllib is split across multiple modules and renamed in
1018 What's New in Python 2.6 beta 1?
1019 ================================
1021 *Release date: 18-June-2008*
1026 - Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
1027 argument being anything other than a dict or None. Also fixed a bug in error
1028 handling when 'message' and 'category' were both set to None, triggering a
1031 - Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
1032 holds the last (strong) reference to its referent.
1034 - Add future_builtins.ascii().
1036 - Several set methods now accept multiple arguments: update(), union(),
1037 intersection(), intersection_update(), difference(), and difference_update().
1039 - Issue #2898: Added sys.getsizeof() to retrieve size of objects in bytes.
1041 - New environment variable PYTHONIOENCODING.
1043 - Patch #2488: Add sys.maxsize.
1045 - Issue #2353: file.xreadlines() now emits a Py3k warning.
1047 - Issue #2863: generators now have a ``gen.__name__`` attribute that
1048 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
1049 ``func.func_code.co_name``. The repr() of a generator now also
1052 - Issue #2831: enumerate() now has a ``start`` argument.
1054 - Issue #2801: fix bug in the float.is_integer method where a
1055 ValueError was sometimes incorrectly raised.
1057 - Issue #2790: sys.flags was not properly exposing its bytes_warning
1060 - Issue #2196: hasattr() now lets exceptions which do not inherit
1061 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
1064 - Added checks for integer overflows, contributed by Google. Some are
1065 only available if asserts are left in the code, in cases where they
1066 can't be triggered from Python code.
1071 - Issue #1179: [CVE-2007-4965] Integer overflow in imageop module.
1073 - Issue #3116: marshal.dumps() had quadratic behavior for strings > 32Mb.
1075 - Issue #2138: Add factorial() to the math module.
1077 - The heapq module does comparisons using LT instead of LE. This
1078 makes its implementation match that used by list.sort().
1080 - Issue #2819: add full-precision summation function to math module,
1081 based on Hettinger's ASPN Python Cookbook recipe.
1083 - Issue #2592: delegate nb_index and the floor/truediv slots in
1086 - Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
1089 - Support for Windows 9x has been removed from the winsound module.
1091 - bsddb module updated to version 4.7.3.
1092 http://www.jcea.es/programacion/pybsddb.htm#bsddb3-4.7.3. This
1093 code should be compatible with Python 3.0.
1095 - Issue #2858: Fix potential memory corruption when
1096 bsddb.db.DBEnv.lock_get and other bsddb.db object constructors
1097 raised an exception.
1099 - Issue #2669: bsddb/__init__.py iteration no longer silently fails when
1100 the database has changed size during iteration. It now raises a
1101 RuntimeError in the same manner as a dictionary.
1103 - Issue #2870: cmathmodule.c compile error.
1105 - Added a threading.Thread.ident property.
1110 - logging.config: Removed out-of-date comment in _install_handlers and
1111 used issubclass in place of equality comparison of classes.
1113 - Issue #2722: Now the os.getcwd() supports very long path names.
1115 - Issue #2888: Fixed the behaviour of pprint when working with nested
1116 structures, to match the behaviour of 2.5 and 3.0 (now follows the common
1119 - Issue #1817: cgi now correctly handles the querystring on POST requests
1121 - Issue #3136: fileConfig()'s disabling of old loggers is now conditional via
1122 an optional disable_existing_loggers parameter, but the default value is
1123 such that the old behaviour is preserved. Thanks to Leandro Lucarella for
1126 - Issue #3126: StreamHandler and FileHandler check before calling "flush" and
1127 "close" that the stream object has these, using hasattr (thanks to bobf for
1130 - Issue #2912: platform.uname now tries to determine unknown information even if
1133 - The rfc822 module has been deprecated for removal in 3.0.
1135 - The mimetools module has been deprecated for removal in 3.0.
1137 - The ctypes.byref function now takes an optional second parameter
1138 which allows to specify an offset in bytes for the constructed
1139 pointer-like object.
1141 - Added the ast module.
1143 - Added the multiprocessing module, PEP 371.
1145 - Factored out the indentation cleaning from inspect.getdoc() into
1146 inspect.cleandoc() to ease standalone use.
1148 - Issue #1798: Add ctypes calling convention that allows safe access
1151 - Issue #2404: ctypes objects support the new pep3118 buffer interface.
1153 - Patch #2125: Add GetInteger and GetString methods for
1154 msilib.Record objects.
1156 - Issue #2782: The datetime module's strftime methods now accept
1157 unicode format strings just as time.strftime always has.
1159 - The sgmllib and htmllib modules have been deprecated for removal
1162 - Issue #3011: locale module alias table was updated to the latest
1163 version from the X.org locale.alias file.
1165 - Issue #1797 (partial fix): ctypes NULL function pointers have a
1166 False boolean value now.
1168 - Issue #2985: Allow 64-bit integer responses (``<i8>``) in XMLRPC
1171 - Issue #2877: The UserString.MutableString class has been removed in
1174 - Do not close external file objects passed to tarfile.open(mode='w:bz2')
1175 when the TarFile is closed.
1177 - Issue #2959: For consistency with other file-like objects, gzip's
1178 GzipFile.close() can now be called multiple times without raising
1181 - Issue #1390: Raise ValueError in toxml when an invalid comment would
1182 otherwise be produced.
1184 - Issue #2914: TimedRotatingFileHandler now takes an optional keyword
1185 argument "utc" to use UTC time rather than local time.
1187 - Issue #2929: TimedRotatingFileHandler was using the wrong path when
1188 deleting old log files (filename only instead of full path).
1190 - Issue #1775025: You can now specify zipfile members to open(),
1191 read() or extract() via a ZipInfo instance. This allows handling
1192 duplicate filenames in zipfiles.
1194 - Issue #961805: Fix Text.edit_modified() in Tkinter.
1196 - Issue #1793: Function ctypes.util.find_msvcrt() added that returns
1197 the name of the C runtime library that Python uses.
1198 ctypes.util.find_library(name) now call this function when name is
1201 - The statvfs module has been deprecated for removal in Python 3.0.
1203 - The sunaudiodev and SUNAUDIODEV modules have been deprecated for
1204 removal in Python 3.0.
1206 - The WAIT module from IRIX has been deprecated for removal in Python
1209 - The torgb module from IRIX has been deprecated for removal in Python
1212 - The SV module from IRIX has been deprecated for removal in Python
1215 - The readcd module from IRIX has been deprecated for removal in
1218 - The panelparser module from IRIX has been deprecated for removal in
1221 - The panel module from IRIX has been deprecated for removal in Python
1224 - The jpeg module from IRIX has been deprecated for removal in Python
1227 - The IOCTL module from IRIX has been deprecated for removal in Python
1230 - The IN module from IRIX has been deprecated for removal in Python
1233 - The imgfile module from IRIX has been deprecated for removal in
1236 - The GLWS module from IRIX has been deprecated for removal in Python
1239 - The GET module from IRIX has been deprecated for removal in Python
1242 - The fm module from IRIX has been deprecated for removal in Python
1245 - The FL, flp, and fl modules from IRIX have been deprecated for
1246 removal in Python 3.0.
1248 - The FILE module on IRIX has been deprecated for removal in Python
1251 - The ERRNO module on IRIX has been deprecated for removal in Python
1254 - The DEVICE, GL, gl, and cgen modules (which indirectly includes
1255 cgensupport) have been deprecated for removal in Python 3.0.
1257 - The CL, CL_old, and cl modules for IRIX have been deprecated for
1258 removal in Python 3.0.
1260 - The cdplayer module for IRIX has been deprecated for removal in
1263 - The cddb module for IRIX has been deprecated for removal in Python
1266 - The cd and CD modules for IRIX have been deprecated for removal in
1269 - The al and AL modules for IRIX have been deprecated for removal in
1272 - Issue #1713041: fix pprint's handling of maximum depth.
1274 - The timing module has been deprecated for removal in Python 3.0.
1276 - The sv module has been deprecated for removal in Python 3.0.
1278 - The multifile module has been deprecated as per PEP 4.
1280 - The imageop module has been deprecated for removal in Python 3.0.
1282 - Issue #2250: Exceptions raised during evaluation of names in
1283 rlcompleter's ``Completer.complete()`` method are now caught and
1286 - Issue #2659: Added ``break_on_hyphens`` option to textwrap
1289 - The mhlib module has been deprecated for removal in Python 3.0.
1291 - The linuxaudiodev module has been deprecated for removal in Python
1294 - The ihooks module has been deprecated for removal in Python 3.0.
1296 - The fpformat module has been deprecated for removal in Python 3.0.
1298 - The dl module has been deprecated for removal in Python 3.0.
1300 - The Canvas module has been deprecated for removal in Python 3.0.
1302 - The compiler package has been deprecated for removal in Python 3.0.
1304 - The Bastion and rexec modules have been deprecated for removal in
1307 - The bsddb185 module has been deprecated for removal in Python 3.0.
1309 - The pure module has been deprecated for removal in Python 3.0.
1311 - Issue #2487: change the semantics of math.ldexp(x, n) when n is too
1312 large to fit in a C long. ldexp(x, n) now returns a zero (with
1313 suitable sign) if n is large and negative; previously, it raised
1316 - The toaiff module has been deprecated for removal in Python 3.0.
1318 - The test.testall module has been deprecated for removal in Python
1321 - The new module has been deprecated for removal in Python 3.0.
1323 - The user module has been deprecated for removal in Python 3.0.
1325 - The stringold module has been deprecated for removal in Python 3.0.
1327 - The mutex module has been deprecated for removal in Python 3.0.
1329 - The imputil module has been deprecated for removal in Python 3.0.
1331 - test.test_support.catch_warning() gained a 'record' argument.
1333 - os.path.walk is deprecated in favor of os.walk.
1335 - pdb gained the "until" command.
1337 - The Mac Modules (including Carbon) have been deprecated for removal
1340 - Library: on MacOS X you can now set ``ARCHFLAGS`` in the shell
1341 environment to control the '-arch' flags that are used to build
1342 an extension. This was added for compatibility with Apple's build
1345 - The bundled OSX-specific copy of libbffi is now in sync with the version
1346 shipped with PyObjC 2.0 and includes support for x86_64 and ppc64 platforms.
1348 - The threading module gained aliases for names that will be removed in the
1354 - The Windows installer now includes Tk 8.5, bzip2 1.0.5, and SQLite 3.5.9.
1356 - Patch #1722225: Support QNX 6.
1358 - ``Lib/lib-old`` is now added to sys.path.
1360 - On MacOS X it is now possible to install the framework in 64-bit
1361 mode or even as a 4-way universal binary (that is, PPC, i386,
1362 PPC64 and x86_64 support in one binary).
1364 This is controlled by the configure argument ``--with-universal-archs``:
1366 - ``--with-universal-archs=all``: install 4-way universal
1368 - ``--with-universal-archs=32-bit``: install 2-way universal, 32-bit (the default)
1370 - ``--with-universal-archs=64-bit``: install 2-way universal, 64-bit
1372 This option should be used in combination with ``--enable-universalsdk=``.
1374 NOTE: 64-bit and 4-way builds are only suppported on Mac OS X 10.5 (or later).
1380 - Add ``PyType_Modified()`` as a public API to clear the type cache.
1382 - The PyBytes functions have been renamed to PyByteArray.
1384 - The PyString functions have been renamed to PyBytes. A batch of
1385 defines were added so that the linker still sees the original
1389 What's New in Python 2.6 alpha 3?
1390 =================================
1392 *Release date: 08-May-2008*
1397 - Issue #2719: backported the ``next()`` builtin from Python 3.
1399 - Issue #2681: The octal literal ``0o8`` was incorrecly acctepted. Now
1400 it properly raises a SyntaxError.
1402 - Issue #2617: Reserved -J and -X arguments for Jython, IronPython and
1403 other implementations of Python.
1405 - Implemented PEP 370: Per user site-packages directory.
1410 - Issue #2670: Fix a failure in urllib2.build_opener(), when passed
1411 two handlers that derive the same default base class.
1413 - Added kill, terminate and send_signal(sig) to subprocess.Popen.
1415 - Added phase(z) -> phi, polar(z) -> r, phi and rect(r, phi) -> z to
1418 - Four new methods were added to the math and cmath modules: acosh,
1419 asinh, atanh and log1p.
1421 - zlib.decompressobj().flush(value) no longer crashes the interpreter
1422 when passed a value less than or equal to zero.
1424 - Issue #1631171: Re-implement the 'warnings' module in C (the
1425 original Python code has been kept as backup). This will allow for
1426 using the 'warning's machinery in such places as the parser where
1427 use of pure Python code is not possible. Both the ``showarning()``
1428 and ``formatwarning()`` gain an optional 'line' argument which is
1429 not called by default for backwards-compatibility reasons. Setting
1430 ``warnings.showwarning()`` to an implementation that lacks support
1431 for the ``line`` argument will raise a DeprecationWarning.
1436 - The audiodev module has been deprecated for removal in Python 3.0.
1438 - Issue #2750: Add the 'json' package. Based on simplejson 1.9 and
1439 contributed by Bob Ippolito.
1441 - Issue #1734346: Support Unicode file names for zipfiles.
1443 - Issue #2581: distutils: Vista UAC/elevation support for
1446 - Issue #2635: Fix bug in 'fix_sentence_endings' textwrap.fill option,
1447 where an extra space was added after a word containing (but not
1448 ending in) '.', '!' or '?'.
1450 - Add from_buffer() and from_buffer_copy() class methods to ctypes
1453 - Issue #2682: ctypes callback functions no longer contain a cyclic
1454 reference to themselves.
1456 - The getpass module has been improved on Unix. It now uses /dev/tty
1457 by default and uses stderr instead of stdout. A GetPassWarning is
1458 issued when input echo cannot be controlled.
1460 - Issue #2014: Allow XML-RPC datetime objects to have dates before
1463 - Issue #2439: Added new function pkgutil.get_data(), which is a
1464 convenience wrapper for the PEP 302 get_data() API.
1466 - Issue #2616: The ctypes.pointer() and ctypes.POINTER() functions are
1467 now implemented in C for better performance.
1469 - Issue #2408: The ``_types`` module, which was used as in
1470 implementation detail of the public ``types`` module, has been
1471 removed and replaced by pure python code.
1473 - Issue #2513: distutils on Windows is now capable of cross-compiling
1474 extension modules between 32 and 64 bit platforms. See the distutls
1475 build documentation for more information.
1477 - Issue #815646: Individual file objects may now be used from multiple
1478 threads at once without fear of crashing the Python interpreter. If
1479 file.close() is called while an object is in use by another thread
1480 an IOError exception will be raised and the file will not be closed.
1482 - The bundled libffi copy is now in sync with the recently released
1483 libffi3.0.5 version, apart from some small changes to
1484 Modules/_ctypes/libffi/configure.ac.
1486 - Issue #2385: distutils.core.run_script() makes __file__ available,
1487 so the controlled environment will more closely mirror the typical
1488 script environment. This supports setup.py scripts that refer to
1494 - Issue #2550: The approach used by client/server code for obtaining
1495 ports to listen on in network-oriented tests has been refined in an
1496 effort to facilitate running multiple instances of the entire
1497 regression test suite in parallel without issue.
1498 test_support.bind_port() has been fixed such that it will always
1499 return a unique port -- which wasn't always the case with the
1500 previous implementation, especially if socket options had been set
1501 that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The
1502 new implementation of bind_port() will actually raise an exception
1503 if it is passed an AF_INET/SOCK_STREAM socket with either the
1504 SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if
1505 available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on
1506 the socket it's been passed. This currently only applies to
1507 Windows. This option prevents any other sockets from binding to the
1508 host/port we've bound to, thus removing the possibility of the
1509 'non-deterministic' behaviour, as Microsoft puts it, that occurs
1510 when a second SOCK_STREAM socket binds and accepts to a host/port
1511 that's already been bound by another socket. The optional preferred
1512 port parameter to bind_port() has been removed. Under no
1513 circumstances should tests be hard coding ports!
1515 test_support.find_unused_port() has also been introduced, which will
1516 pass a temporary socket object to bind_port() in order to obtain an
1517 unused port. The temporary socket object is then closed and
1518 deleted, and the port is returned. This method should only be used
1519 for obtaining an unused port in order to pass to an external program
1520 (i.e. the -accept [port] argument to openssl's s_server mode) or as
1521 a parameter to a server-oriented class that doesn't give you direct
1522 access to the underlying socket used.
1524 Finally, test_support.HOST has been introduced, which should be used
1525 for the host argument of any relevant socket calls (i.e. bind and
1528 The following tests were updated to following the new conventions:
1529 test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib,
1530 test_poplib, test_ftplib, test_telnetlib, test_socketserver,
1531 test_asynchat and test_socket_ssl.
1533 It is now possible for multiple instances of the regression test
1534 suite to run in parallel without issue.
1539 - Issue #1496032: On alpha, use -mieee when gcc is the compiler.
1541 - Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
1542 gcc is used as compiler.
1544 - Issue #2573: On MacOS X it is now possible to install the framework
1545 with a different name using --with-framework-name=NAME.
1550 - Added implementation of copysign, acosh, asinh, atanh and log1p to
1551 the new files Include/pymath.h and Python/pymath.h for platforms
1552 which provide the functions through their libm. The files also
1553 contains several helpers and constants for math.
1555 - Added a new convenience macro, PyErr_WarnPy3k, for issuing Py3k warnings.
1558 What's New in Python 2.6 alpha 2?
1559 =================================
1561 *Release date: 02-Apr-2008*
1566 - Issue #1733757: The interpreter would hang on shutdown if the
1567 tracing function set by sys.settrace is still active and happens to
1568 call threading.currentThread().
1570 - Patch #1442: properly report exceptions when the PYTHONSTARTUP file
1573 - The compilation of a class nested in another class used to leak one
1574 reference on the outer class name.
1576 - Patch #1810: compile() can now compile _ast trees as returned by
1577 ``compile(..., PyCF_ONLY_AST)``.
1579 - Patch #2426: Added sqlite3.Connection.iterdump method to allow easy
1580 dumping of databases. Contributed by Paul Kippes at PyCon 2008.
1582 - Patch #2477: Added from __future__ import unicode_literals.
1584 - Added backport of bytearray type.
1586 - Issue #2355: add Py3k warning for buffer().
1588 - Issue #1477: With narrow Unicode builds, the unicode escape sequence
1589 \Uxxxxxxxx did not accept values outside the Basic Multilingual
1590 Plane. This affected raw unicode literals and the
1591 'raw-unicode-escape' codec. Now UTF-16 surrogates are generated in
1592 this case, like normal unicode literals and the 'unicode-escape'
1595 - Issue #2348: add Py3k warning for file.softspace.
1597 - Issue #2346/#2347: add Py3k warnings for __methods__ and
1600 - Issue #2358: Add a Py3k warning on sys.exc_clear() usage.
1602 - Issue #2400: Allow relative imports to "import *".
1604 - Issue #1745: Backport print function with ``from __future__ import
1607 - Issue #2332: add new attribute names for instance method objects.
1608 The two changes are: im_self -> __self__ and im_func -> __func__
1610 - Issue #2379: Raise a Py3K warning for __getitem__ or __getslice__ on
1611 exception instances.
1613 - Issue #2371: Add a Py3k warning when catching an exception that
1614 doesn't derive from BaseException.
1616 - Issue #2341: Add a Py3k warning when raising an exception that
1617 doesn't derive from BaseException.
1619 - Issue #2321: use pymalloc for unicode object string data to reduce
1620 memory usage in some circumstances.
1622 - PEP 3127: octal literals now start with "0o". Old-style octal
1623 literals are still valid. There are binary literals with a prefix of
1624 "0b". This also affects int(x, 0).
1626 - Issue #2359: Adding deprecation warnings for array.{read,write}.
1628 - Issue #1779871: GNU gcc can now build Python on OS X because the
1629 flags -Wno-long-double, -no-cpp-precomp, and -mno-fused-madd are no
1632 - Add a warning when asserting a non-empty tuple which is always true.
1634 - Issue #2179: speed up with statement execution by storing the exit
1635 method on the stack instead of in a temporary variable (patch by
1638 - Issue #2238: Some syntax errors in *args and **kwargs expressions
1639 could give bogus error messages.
1641 - Issue #2143: Fix embedded readline() hang on SSL socket EOF.
1646 - Patch #2240: Implement signal.setitimer and signal.getitimer.
1651 - Issue #2315: logging.handlers: TimedRotatingFileHandler now accounts
1652 for daylight savings time in calculating the next rollover.
1654 - Issue #2316: logging.handlers: TimedRotatingFileHandler now
1655 calculates rollovers correctly even when nothing is logged for a
1658 - Issue #2317: logging.handlers: TimedRotatingFileHandler now uses
1659 improved logic for removing old files.
1661 - Issue #2495: tokenize.untokenize now inserts a space between two
1662 consecutive string literals; previously, ["" ""] was rendered as
1663 [""""], which is incorrect python code.
1665 - Issue #2248: return the result of the QUIT command. from
1668 - Backport of Python 3.0's io module.
1670 - Issue #2482: Make sure that the coefficient of a Decimal is always
1671 stored as a str instance, not as a unicode instance. This ensures
1672 that str(Decimal) is always an instance of str.
1674 - Issue #2478: fix failure of decimal.Decimal(0).sqrt()
1676 - Issue #2432: give DictReader the dialect and line_num attributes
1677 advertised in the docs.
1679 - Issue #2460: Make Ellipsis object copyable.
1681 - Issue #1681432: Add triangular distribution to the random module
1683 - Issue #2136: urllib2's auth handler now allows single-quoted realms
1684 in the WWW-Authenticate header.
1686 - Issue #2434: Enhanced platform.win32_ver() to also work on Python
1687 installation which do not have the win32all package installed.
1689 - Added support to platform.uname() to also report the machine and
1690 processor information on Windows XP and later. As a result,
1691 platform.machine() and platform.processor() will report this
1692 information as well.
1694 - The library implementing the 2to3 conversion, lib2to3, was added to
1695 the standard distribution.
1697 - Issue #1747858: Fix chown to work with large uid's and gid's on
1700 - Issue #1202: zlib.crc32 and zlib.adler32 no longer return different
1701 values on 32-bit vs. 64-bit python interpreters. Both were correct,
1702 but they now both return a signed integer object for consistency.
1704 - Issue #1158: add %f format (fractions of a second represented as
1705 microseconds) to datetime objects. Understood by both strptime and
1708 - Issue #705836: struct.pack(">f", x) now raises OverflowError on all
1709 platforms when x is too large to fit into an IEEE 754 float;
1710 previously it only raised OverflowError on non IEEE 754 platforms.
1712 - Issues #2166, #1741 and #1531505: now distutils deals with HOME
1713 correctly under win32
1715 - Patch #1858: distutils: added multiple server support in .pypirc
1717 - Issue #1106316: pdb.post_mortem()'s parameter, "traceback", is now
1718 optional: it defaults to the traceback of the exception that is
1719 currently being handled (is mandatory to be in the middle of an
1720 exception, otherwise it raises ValueError).
1722 - Issue #1193577: A .shutdown() method has been added to SocketServers
1723 which terminates the .serve_forever() loop.
1725 - Issue #2220: handle rlcompleter attribute match failure more
1728 - Issue #2225: py_compile, when executed as a script, now returns a
1729 non- zero status code if not all files could be compiled
1732 - Bug #1725737: In distutils' sdist, exclude RCS, CVS etc. also in the
1733 root directory, and also exclude .hg, .git, .bzr, and _darcs.
1735 - Issue #1872: The struct module typecode for _Bool has been changed
1738 - The bundled libffi copy is now in sync with the recently released
1739 libffi3.0.4 version, apart from some small changes to
1740 Modules/_ctypes/libffi/configure.ac. On OS X, preconfigured libffi
1741 files are used. On all linux systems the --with-system-ffi
1742 configure option defaults to "yes".
1744 - Issue #1577: shutil.move() now calls os.rename() if the destination
1745 is a directory instead of copying-then-remove-source.
1750 - test_nis no longer fails when test.test_support.verbose is true and
1751 NIS is not set up on the testing machine.
1753 - Output comparison tests are no longer supported.
1755 - Rewrite test_errno to use unittest and no longer be a no-op.
1757 - GHOP 234: Convert test_extcall to doctest.
1759 - GHOP 290: Convert test_dbm and test_dummy_threading to unittest.
1761 - GHOP 293: Convert test_strftime, test_getargs, and test_pep247 to
1764 - Issue #2055: Convert test_fcntl to unittest.
1766 - Issue 1960: Convert test_gdbm to unittest.
1768 - GHOP 294: Convert test_contains, test_crypt, and test_select to
1771 - GHOP 238: Convert test_tokenize to use doctest.
1773 - GHOP 237: Rewrite test_thread using unittest.
1775 - Patch #2232: os.tmpfile might fail on Windows if the user has no
1776 permission to create files in the root directory.
1781 - A new script 2to3 is now installed, to run the 2.x to 3.x converter.
1783 - Python/memmove.c and Python/strerror.c have been removed; both
1784 functions are in the C89 standard library.
1786 - Patch #2284: Add -x64 option to rt.bat.
1791 - Patch #2477: Added PyParser_ParseFileFlagsEx() and
1792 PyParser_ParseStringFlagsFilenameEx().
1795 What's New in Python 2.6 alpha 1?
1796 =================================
1798 *Release date: 29-Feb-2008*
1803 - Issue #2051: pyc and pyo files are no longer created with permission
1804 644. The mode is now inherited from the py file.
1806 - Issue #2067: file.__exit__() now calls subclasses' close() method.
1808 - Patch #1759: Backport of PEP 3129 class decorators.
1810 - Issue #1881: An internal parser limit has been increased. Also see
1811 issue 215555 for a discussion.
1813 - Added the future_builtins module, which contains hex() and oct().
1814 These are the PEP 3127 version of these functions, designed to be
1815 compatible with the hex() and oct() builtins from Python 3.0. They
1816 differ slightly in their output formats from the existing, unchanged
1817 Python 2.6 builtins. The expected usage of the future_builtins
1819 from future_builtins import hex, oct
1821 - Issue #1600: Modifed PyOS_ascii_formatd to use at most 2 digit
1822 exponents for exponents with absolute value < 100. Follows C99
1823 standard. This is a change on Windows, which would use 3 digits.
1824 Also, added 'n' to the formats that PyOS_ascii_formatd understands,
1825 so that any alterations it does to the resulting string will be
1826 available in stringlib/formatter.h (for float.__format__).
1828 - Implemented PEP 3101, Advanced String Formatting. This adds a new
1829 builtin format(); a format() method for str and unicode; a
1830 __format__() method to object, str, unicode, int, long, float, and
1831 datetime; the class string.Formatter; and the C API
1834 - Fixed several potential crashes, all caused by specially crafted
1835 __del__ methods exploiting objects in temporarily inconsistent
1838 - Issue #2115: Important speedup in setting __slot__ attributes. Also
1839 prevent a possible crash: an Abstract Base Class would try to access
1840 a slot on a registered virtual subclass.
1842 - Fixed repr() and str() of complex numbers with infinity or nan as
1843 real or imaginary part.
1845 - Clear all free lists during a gc.collect() of the highest generation
1846 in order to allow pymalloc to free more arenas. Python may give back
1847 memory to the OS earlier.
1849 - Issue #2045: Fix an infinite recursion triggered when printing a
1850 subclass of collections.defaultdict, if its default_factory is set
1853 - Fixed a minor memory leak in dictobject.c. The content of the free
1854 list was not freed on interpreter shutdown.
1856 - Limit free list of method and builtin function objects to 256
1859 - Patch #1953: Added ``sys._compact_freelists()`` and the C API
1860 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
1861 to compact the internal free lists of pre-allocted ints and floats.
1863 - Issue #1983: Fixed return type of fork(), fork1() and forkpty()
1864 calls. Python expected the return type int but the fork familie
1867 - Issue #1678380: Fix a bug that identifies 0j and -0j when they
1868 appear in the same code unit.
1870 - Issue #2025: Add tuple.count() and tuple.index() methods to comply
1871 with the collections.Sequence API.
1873 - Patch #1970 by Antoine Pitrou: Speedup unicode whitespace and
1876 - Added ``PyType_ClearCache()`` and ``sys._clear_type_cache`` to clear
1877 the internal lookup cache for ref leak tests.
1879 - Patch #1473257: generator objects gain a gi_code attribute. This is
1880 the same object as the func_code attribute of the function that
1881 produced the generator.
1883 - Issue #1920: "while 0" statements were completely removed by the
1884 compiler, even in the presence of an "else" clause, which is
1885 supposed to be run when the condition is false. Now the compiler
1886 correctly emits bytecode for the "else" suite.
1888 - A few crashers fixed: weakref_in_del.py (issue #1377858);
1889 loosing_dict_ref.py (issue #1303614, test67.py);
1890 borrowed_ref_[34].py (not in tracker).
1892 - Issue #1069410: The "can't load dll" message box on Windows is
1893 suppressed while an extension is loaded by calling SetErrorMode in
1894 dynload_win.c. The error is still reported properly.
1896 - Issue #1915: Python compiles with --enable-unicode=no again. However
1897 several extension methods and modules do not work without unicode
1900 - Issue #1882: when compiling code from a string, encoding cookies in the
1901 second line of code were not always recognized correctly.
1903 - Issue #1679: "0x" was taken as a valid integer literal.
1905 - Issue #1865: ``bytes`` as an alias for ``str`` and b"" as an alias "" were
1908 - sys.float_info / PyFloat_GetInfo: The floating point information
1909 object was converted from a dict to a specialized structseq object.
1911 - Patch #1816: Added sys.flags structseq. It exposes the status of
1912 most command line arguments and PYTHON* environment variables.
1914 - Objects/structseq.c: Implemented new structseq representation. The
1915 patch makes structseqs (e.g. the return value of os.stat) more
1918 - Patch #1700288: added a type attribute cache that caches method
1919 accesses, resulting in speedups in heavily object-oriented code.
1921 - Bug #1776: __import__() no longer accepts filenames on any platform.
1922 The first parameter to __import__() must be a valid module name.
1924 - Patch #1668: renamed THREADDEBUG envvar to PYTHONTHREADDEBUG.
1926 - Patch #602345: Add -B command line option, PYTHONDONTWRITEBYTECODE
1927 envvar and sys.dont_write_bytecode attribute. All these can be set
1928 to forbid Python to attempt to write compiled bytecode files.
1930 - Improve some exception messages when Windows fails to load an
1931 extension module. Now we get for example '%1 is not a valid Win32
1932 application' instead of 'error code 193'.
1934 - Bug #1481296: Fixed long(float('nan')) != 0L.
1936 - Issue #1640: Added math.isinf(x), math.isnan(x) and math.copysign(x,
1939 - Issue #1635: Platform independent creation and representation of NaN
1940 and INF. float("nan"), float("inf") and float("-inf") now work on
1941 every platform with IEEE 754 semantics.
1943 - Compiler now generates simpler and faster code for dictionary
1944 literals. The oparg for BUILD_MAP now indicates an estimated
1945 dictionary size. There is a new opcode, STORE_MAP, for adding
1946 entries to the dictionary.
1948 - Issue #1638: %zd configure test fails on Linux.
1950 - Issue #1620: New property decorator syntax was modifying the
1951 decorator in place instead of creating a new decorator object.
1953 - Issue #1538: Avoid copying string in split/rsplit if the split char
1956 - Issue #1553: An erroneous __length_hint__ can make list() raise a
1959 - PEP 366: Allow explicit relative imports when executing modules
1960 inside packages with the -m switch via a new module level
1961 __package__ attribute.
1963 - Issue #1402: Fix a crash on exit, when another thread is still
1964 running, and if the deallocation of its frames somehow calls the
1965 PyGILState_Ensure() / PyGILState_Release() functions.
1967 - Expose the Py_Py3kWarningFlag as sys.py3kwarning.
1969 - Issue #1445: Fix a SystemError when accessing the ``cell_contents``
1970 attribute of an empty cell object.
1972 - Issue #1460: The utf-7 incremental decoder did not accept truncated
1973 input. It now correctly saves its state between chunks of data.
1975 - Patch #1739468: Directories and zipfiles containing a __main__.py
1976 file can now be directly executed by passing their name to the
1977 interpreter. The directory/zipfile is automatically inserted as the
1978 first entry in sys.path.
1980 - Issue #1265: Fix a problem with sys.settrace, if the tracing
1981 function uses a generator expression when at the same time the
1982 executed code is closing a paused generator.
1984 - sets and frozensets now have an isdisjoint() method.
1986 - optimize the performance of builtin.sum().
1988 - Fix warnings found by the new version of the Coverity checker.
1990 - The enumerate() builtin function is no longer bounded to sequences
1991 smaller than LONG_MAX. Formerly, it raised an OverflowError. Now,
1992 automatically shifts from ints to longs.
1994 - Issue #1686386: Tuple's tp_repr did not take into account the
1995 possibility of having a self-referential tuple, which is possible
1996 from C code. Nor did object's tp_str consider that a type's tp_str
1997 could do something that could lead to an inifinite recursion.
1998 Py_ReprEnter() and Py_EnterRecursiveCall(), respectively, fixed the
2001 - Issue #1164: It was possible to trigger deadlock when using the
2002 'print' statement to write to a file since the GIL was not released
2003 as needed. Now PyObject_Print() does the right thing along with
2004 various tp_print implementations of the built-in types and those in
2005 the collections module.
2007 - Issue #1147: Exceptions were directly allowing string exceptions in
2008 their throw() method even though string exceptions no longer
2011 - Issue #1096: Prevent a segfault from getting the repr of a very
2012 deeply nested list by using the recursion counter.
2014 - Issue #1202533: Fix infinite recursion calls triggered by calls to
2015 PyObject_Call() never calling back out to Python code to trigger
2016 recursion depth updates/checks. Required the creation of a static
2017 RuntimeError instance in case normalizing an exception put the
2018 recursion check value past its limit. Fixes crashers
2019 infinite_rec_(1|2|4|5).py.
2021 - Patch #1031213: Decode source line in SyntaxErrors back to its
2022 original source encoding.
2024 - Patch #1673759: add a missing overflow check when formatting floats
2027 - Prevent expandtabs() on string and unicode objects from causing a
2028 segfault when a large width is passed on 32-bit platforms.
2030 - Issue #1733488: Fix compilation of bufferobject.c on AIX.
2032 - Issue #1722485: remove docstrings again when running with -OO.
2034 - Add new attribute names for function objects. All the func_* become
2035 __*__ attributes. (Some already existed, e.g., __doc__ and
2038 - Add -3 option to the interpreter to warn about features that are
2039 deprecated and will be changed/removed in Python 3.0.
2041 - Patch #1686487: you can now pass any mapping after '**' in function
2044 - except clauses may now be spelled either "except E, target:" or
2045 "except E as target:". This is to provide forwards compatibility
2048 - Deprecate BaseException.message as per PEP 352.
2050 - Issue #1303614: don't expose object's __dict__ when the dict is
2051 inherited from a builtin base.
2053 - When __slots__ are set to a unicode string, make it work the same as
2054 setting a plain string, ie don't expand to single letter identifiers.
2056 - Request #1191699: Slices can now be pickled.
2058 - Request #1193128: str.translate() now allows a None argument for
2059 translations that only remove characters without re-mapping the
2060 remaining characters.
2062 - Patch #1682205: a TypeError while unpacking an iterable is no longer
2063 masked by a generic one with the message "unpack non-sequence".
2065 - Remove unused file Python/fmod.c.
2067 - Bug #1683368: The object.__init__() and object.__new__() methods are
2068 now stricter in rejecting excess arguments. The only time when
2069 either allows excess arguments is when it is not overridden and the
2070 other one is. For backwards compatibility, when both are
2071 overridden, it is a deprecation warning (for now; maybe a Py3k
2072 warning later). Also, type.__init__() insists on the same signature
2073 as supported by type.__new__().
2075 - Patch #1675423: PyComplex_AsCComplex() now tries to convert an
2076 object to complex using its __complex__() method before falling back
2077 to the __float__() method. Therefore, the functions in the cmath
2078 module now can operate on objects that define a __complex__()
2081 - Patch #1623563: allow __class__ assignment for classes with
2082 __slots__. The old and the new class are still required to have the
2085 - Patch #1642547: Fix an error/crash when encountering syntax errors
2086 in complex if statements.
2088 - Patch #1462488: Python no longer segfaults when
2089 ``object.__reduce_ex__()`` is called with an object that is faking
2092 - Patch #1680015: Don't modify __slots__ tuple if it contains an
2095 - Patch #1444529: the builtin compile() now accepts keyword arguments.
2097 - Bug #1678647: write a newline after printing an exception in any
2098 case, even when converting the value to a string failed.
2100 - The dir() function has been extended to call the __dir__() method on
2101 its argument, if it exists. If not, it will work like before. This
2102 allows customizing the output of dir() in the presence of a
2105 - Patch #922167: Python no longer segfaults when faced with infinitely
2106 self-recursive reload() calls (as reported by bug #742342).
2108 - Patch #1675981: remove unreachable code from ``type.__new__()``
2111 - Patch #1491866: change the complex() constructor to allow
2112 parthensized forms. This means complex(repr(x)) now works instead of
2113 raising a ValueError.
2115 - Patch #703779: unset __file__ in __main__ after running a file. This
2116 makes the filenames the warning module prints much more sensible
2117 when a PYTHONSTARTUP file is used.
2119 - Variant of patch #697613: don't exit the interpreter on a SystemExit
2120 exception if the -i command line option or PYTHONINSPECT environment
2121 variable is given, but break into the interactive interpreter just
2122 like on other exceptions or normal program exit.
2124 - Patch #1638879: don't accept strings with embedded NUL bytes in
2127 - Bug #1674503: close the file opened by execfile() in an error
2130 - Patch #1674228: when assigning a slice (old-style), check for the
2131 sq_ass_slice instead of the sq_slice slot.
2133 - When printing an unraisable error, don't print exceptions. before
2134 the name. This duplicates the behavior whening normally printing
2137 - Bug #1653736: Properly discard third argument to
2138 slot_nb_inplace_power.
2140 - PEP 352: Raising a string exception now triggers a TypeError.
2141 Attempting to catch a string exception raises DeprecationWarning.
2143 - Bug #1377858: Fix the segfaulting of the interpreter when an object
2144 created a weakref on itself during a __del__ call for new-style
2145 classes (classic classes still have the bug).
2147 - Bug #1579370: Make PyTraceBack_Here use the current thread, not the
2148 frame's thread state.
2150 - patch #1630975: Fix crash when replacing sys.stdout in
2153 - Prevent seg fault on shutdown which could occur if an object raised
2156 - Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, to
2157 avoid relying on atexit.
2159 - Bug #1590891: random.randrange don't return correct value for big
2162 - Patch #1586791: Better exception messages for some operations on
2163 strings, tuples and lists.
2165 - Bug #1067760: Deprecate passing floats to file.seek.
2167 - Bug #1591996: Correctly forward exception in instance_contains().
2169 - Bug #1588287: fix invalid assertion for `1,2` in debug builds.
2171 - Bug #1576657: when setting a KeyError for a tuple key, make sure
2172 that the tuple isn't used as the "exception arguments tuple".
2174 - Bug #1565514: SystemError not raised on too many nested blocks.
2176 - Bug #1576174: WindowsError now displays the windows error code
2177 again, no longer the posix error code.
2179 - Patch #1549049: Support long values in structmember, issue warnings
2180 if the assigned value for structmember fields gets truncated.
2182 - Update the peephole optimizer to remove more dead code (jumps after
2183 returns) and inline unconditional jumps to returns.
2185 - Bug #1545497: when given an explicit base, int() did ignore NULs
2186 embedded in the string to convert.
2188 - Bug #1569998: break inside a try statement (outside a loop) is now
2189 recognized and rejected.
2191 - list.pop(x) accepts any object x following the __index__ protocol.
2193 - A number of places, including integer negation and absolute value,
2194 were fixed to not rely on undefined behaviour of the C compiler
2197 - Bug #1566800: make sure that EnvironmentError can be called with any
2198 number of arguments, as was the case in Python 2.4.
2200 - Patch #1567691: super() and new.instancemethod() now don't accept
2201 keyword arguments any more (previously they accepted them, but
2204 - Fix a bug in the parser's future statement handling that led to
2205 "with" not being recognized as a keyword after, e.g., this
2206 statement: from __future__ import division, with_statement
2208 - Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).
2210 - Fix %zd string formatting on Mac OS X so it prints negative numbers.
2212 - Allow exception instances to be directly sliced again.
2214 - Bug #1551432: Exceptions do not define an explicit __unicode__
2215 method. This allows calling unicode() on exceptions classes
2216 directly to succeed.
2218 - Bug #1542051: Exceptions now correctly call PyObject_GC_UnTrack.
2219 Also make sure that every exception class has __module__ set to
2222 - Bug #1550983: emit better error messages for erroneous relative
2223 imports (if not in package and if beyond toplevel package).
2225 - Overflow checking code in integer division ran afoul of new gcc
2226 optimizations. Changed to be more standard-conforming.
2228 - Patch #1542451: disallow continue anywhere under a finally.
2230 - Patch #1546288: fix seg fault in dict_equal due to ref counting bug.
2232 - The return tuple from str.rpartition(sep) is (tail, sep, head) where
2233 head is the original string if sep was not found.
2235 - Bug #1520864: unpacking singleton tuples in list comprehensions and
2236 generator expressions (x for x, in ... ) works again. Fixing this
2237 problem required changing the .pyc magic number. This means that
2238 .pyc files generated before 2.5c2 will be regenerated.
2240 - ``with`` and ``as`` are now keywords.
2242 - Bug #1664966: Fix crash in exec if Unicode filename can't be
2245 - Issue #1537: Changed GeneratorExit's base class from Exception to
2248 - Issue #1703448: A joined thread could show up in the
2249 threading.enumerate() list after the join() for a brief period until
2256 - Patch #2274: Add heapq.heappushpop().
2258 - Add inspect.isabstract(object) to fix bug #2223
2260 - Add a __format__ method to Decimal, to support PEP 3101.
2262 - Add a timing parameter when using trace.Trace to print out
2265 - Issue #1627: httplib now ignores negative Content-Length headers.
2267 - Issue #900744: If an invalid chunked-encoding header is sent by a
2268 server, httplib will now raise IncompleteRead and close the
2269 connection instead of raising ValueError.
2271 - Issue #1492: The content type of BaseHTTPServer error messages can
2274 - Issue #1781: ConfigParser now does not let you add the "default" section
2277 - Removed uses of dict.has_key() from distutils, and uses of
2278 callable() from copy_reg.py, so the interpreter now starts up
2279 without warnings when '-3' is given. More work like this needs to
2280 be done in the rest of the stdlib.
2282 - Issue #1916: added isgenerator() and isgeneratorfunction() to
2285 - Issue #1224: Fixed bad url parsing when path begins with double
2288 - ctypes instances that are not or do not contain pointers can now be
2291 - Patch #1966: Break infinite loop in httplib when the servers
2292 implements the chunked encoding incorrectly.
2294 - Rename rational.py to fractions.py and the rational.Rational class
2295 to fractions.Fraction, to avoid the name clash with the abstract
2296 base class numbers.Rational. See discussion in issue #1682.
2298 - The pickletools module now provides an optimize() function that
2299 eliminates unused PUT opcodes from a pickle string.
2301 - Patch #2021: Allow tempfile.NamedTemporaryFile and
2302 SpooledTemporaryFile to be used in with statements by correctly
2303 supporting the context management protocol.
2305 - Patch #1979: Add rich comparisons to Decimal, and make Decimal
2306 comparisons involving a NaN follow the IEEE 754 standard.
2308 - Issue #2004: tarfile.py: Use mode 0700 for temporary directories and
2309 default permissions for missing directories.
2311 - Issue #175006: The debugger used to skip the condition of a "while"
2312 statement after the first iteration. Now it correctly steps on the
2313 expression, and breakpoints on the "while" statement are honored on
2316 - Issue #1765140: add an optional delay argument to FileHandler and
2317 its subclasses. Defaults to false (existing behaviour), but if true,
2318 defers opening the file until the first call to emit().
2320 - The pprint module now supports sets and frozensets.
2322 - Issue #1221598: add optional callbacks to ftplib.FTP's storbinary()
2323 and storlines() methods. (Contributed by Phil Schwartz)
2325 - Issue #1715: include sub-extension modules in pydoc's text output.
2327 - Issue #1836: fix an off-by-one bug in TimedRotatingHandler's
2328 rollover time calculation.
2330 - Issue #1021: fix a bug to allow basicConfig to accept NOTSET as a
2333 - Issue #932563: add LoggerAdapter convenience class to make it easier
2334 to add contextual information in logging output.
2336 - Issue #1760556: fix a bug to avoid FileHandler throwing an exception
2339 - Bug #1530959: distutils' build command now uses different build
2340 directory when building extension modules against versions of Python
2341 compiled with ``--with-pydebug``.
2343 - Issue #1555501: move plistlib from plat-mac directory to general
2346 - Issue #1269: fix a bug in pstats.add_callers() and add a unit test
2349 - Issue #1669: don't allow shutil.rmtree() to be called on a symlink
2352 - Issue #1664522: in urllib, don't read non-existing directories in
2353 ftp mode, returning a 0-byte file -- raise an IOError instead.
2355 - Issue #856047: respect the ``no_proxy`` environment variable when
2356 using the ``http_proxy`` etc. environment variables in urllib.
2358 - Issue #1178141: add a getcode() method to the addinfourls that
2359 urllib.open() returns so that you can retrieve the HTTP status code.
2361 - Issue #1003: Fix zipfile decryption check, it would fail zip files
2362 with extended local headers.
2364 - Issue #1189216: Fix the zipfile module to work on archives with
2365 headers past the 2**31 byte boundary.
2367 - Issue #1336: fix a race condition in subprocess.Popen if the garbage
2368 collector kicked in at the wrong time that would cause the process
2369 to hang when the child wrote to stderr.
2371 - Issue #1146: fix how textwrap breaks a long word that would start in
2372 the last column of a line.
2374 - Issue #1693149: trace.py --ignore-module - accept multiple
2375 comma-separated modules to be given.
2377 - Issue #1822: MIMEMultipart.is_multipart() behaves correctly for a
2378 just-created (and empty) instance. Thanks Jonathan Share.
2380 - Issue #1861: Added an attribute to the sched module which returns an
2381 ordered list of upcoming events (displayed as named tuples).
2383 - Issue #1837: The queue module now also supports a LIFO queue and a
2386 - Patch #1048820: Add insert-mode editing to curses.textpad.Textbox
2387 (patch by Stefan Wehr). Also, fix an off-by-one bug in
2390 - Issue #1831: ctypes now raises a TypeError if conflicting positional
2391 and named arguments are passed to a Structure or Union initializer.
2392 When too many positional arguments are passed, also a TypeError is
2393 raised instead of a ValueError.
2395 - Convert the internal ctypes array type cache to a WeakValueDict so
2396 that array types do not live longer than needed.
2398 - Issue #1786: pdb should use its own stdin/stdout around an exec call
2399 and when creating a recursive instance.
2401 - Issue #1698398: ZipFile.printdir() crashed because the format string
2402 expected a tuple type of length six instead of time.struct_time
2405 - Issue #1780: The Decimal constructor now accepts arbitrary leading
2406 and trailing whitespace when constructing from a string.
2407 Context.create_decimal no longer accepts trailing newlines.
2409 - Decimal.as_tuple(), difflib.find_longest_match() and inspect
2410 functions that returned a tuple now return a named tuple.
2412 - Doctest now returns results as a named tuple for readability:
2413 (0, 7) --> TestResults(failed=0, attempted=7)
2415 - Issue #846388:q re.match is interruptible now, which is particularly
2416 good for long regular expression matches.
2418 - Patch #1137: allow setting buffer_size attribute on pyexpat Parser
2419 objects to set the character data buffer size.
2421 - Issue #1757: The hash of a Decimal instance is no longer affected by
2422 the current context.
2424 - Patch #467924: add ZipFile.extract() and ZipFile.extractall() in the
2427 - Issue #1646: Make socket support the TIPC protocol.
2429 - Bug #1742: return os.curdir from os.path.relpath() if both arguments
2430 are equal instead of raising an exception.
2432 - Patch #1637: fix urlparse for URLs like 'http://x.com?arg=/foo'.
2434 - Patch #1698: allow '@' in username parsed by urlparse.py.
2436 - Issue #1735: TarFile.extractall() now correctly sets directory
2437 permissions and times.
2439 - Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a mountpoint.
2441 - Bug #1687: Fxed plistlib.py restricts <integer> to Python int when
2444 - Issue #1700: Regular expression inline flags incorrectly handle
2445 certain unicode characters.
2447 - Issue #1689: PEP 3141, numeric abstract base classes.
2449 - Tk issue #1851526: Return results from Python callbacks to Tcl as
2452 - Issue #1642: Fix segfault in ctypes when trying to delete attributes.
2454 - Issue #1727780: Support loading pickles of random.Random objects
2455 created on 32-bit systems on 64-bit systems, and vice versa. As a
2456 consequence of the change, Random pickles created by Python 2.6
2457 cannot be loaded in Python 2.5.
2459 - Issue #1455: The distutils package now supports VS 2005 and VS 2008
2460 for both the msvccompiler and cygwincompiler.
2462 - Issue #1531: tarfile.py: Read fileobj from the current offset, do
2463 not seek to the start.
2465 - Issue #1534: Added a dictionary sys.float_info with information
2466 about the internal floating point type to the sys module.
2468 - Issue #1429818: patch for trace and doctest modules so they play
2471 - doctest made a bad assumption that a package's __loader__.get_data()
2472 method used universal newlines.
2474 - Issue #1705170: contextlib.contextmanager was still swallowing
2475 StopIteration in some cases. This should no longer happen.
2477 - Issue #1292: On alpha, arm, ppc, and s390 linux systems the
2478 --with-system-ffi configure option defaults to "yes".
2480 - IN module for FreeBSD 8 is added and preexisting FreeBSD 6 and 7
2483 - Issues #1181, #1287: unsetenv() is now called when the
2484 os.environ.pop() and os.environ.clear() methods are used.
2486 - ctypes will now work correctly on 32-bit systems when Python is
2487 configured with --with-system-ffi.
2489 - Patch #1203: ctypes now does work on OS X when Python is built with
2490 --disable-toolbox-glue.
2492 - collections.deque() now supports a "maxlen" argument.
2494 - itertools.count() is no longer bounded to LONG_MAX. Formerly, it
2495 raised an OverflowError. Now, automatically shifts from ints to
2498 - Added itertools.product() which forms the Cartesian product of the
2501 - Added itertools.combinations() and itertools.permutations().
2503 - Patch #1541463: optimize performance of cgi.FieldStorage operations.
2505 - Decimal is fully updated to the latest Decimal Specification
2508 - Bug #1153: repr.repr() now doesn't require set and dictionary items
2509 to be orderable to properly represent them.
2511 - A 'c_longdouble' type was added to the ctypes module.
2513 - Bug #1709599: Run test_1565150 only if the file system is NTFS.
2515 - When encountering a password-protected robots.txt file the
2516 RobotFileParser no longer prompts interactively for a username and
2517 password (bug 813986).
2519 - TarFile.__init__() no longer fails if no name argument is passed and
2520 the fileobj argument has no usable name attribute (e.g. StringIO).
2522 - The functools module now provides 'reduce', for forward
2523 compatibility with Python 3000.
2525 - Server-side SSL support and cert verification added, by Bill
2528 - socket.ssl deprecated; use new ssl module instead.
2530 - uuid creation is now threadsafe.
2532 - EUC-KR codec now handles the cheot-ga-keut composed make-up hangul
2535 - GB18030 codec now can encode additional two-byte characters that are
2538 - Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
2540 - Bug #1704793: Return UTF-16 pair if unicodedata.lookup cannot
2541 represent the result in a single character.
2543 - Bug #978833: Close https sockets by releasing the _ssl object.
2545 - Change location of the package index to pypi.python.org/pypi
2547 - Bug #1701409: Fix a segfault in printing ctypes.c_char_p and
2548 ctypes.c_wchar_p when they point to an invalid location. As a
2549 sideeffect the representation of these instances has changed.
2551 - tarfile.py: Added "exclude" keyword argument to TarFile.add().
2553 - Bug #1734723: Fix repr.Repr() so it doesn't ignore the maxtuple
2556 - The urlopen function of urllib2 now has an optional timeout
2557 parameter (note that it actually works with HTTP, HTTPS, FTP and
2560 - In ftplib, the FTP.ntransfercmd method, when in passive mode, now
2561 uses the socket.create_connection function, using the timeout
2562 specified at connection time.
2564 - Bug #1728403: Fix a bug that CJKCodecs StreamReader hangs when it
2565 reads a file that ends with incomplete sequence and sizehint
2566 argument for .read() is specified.
2568 - Bug #1730389: Change time.strptime() to use ``\s+`` instead of
2569 ``\s*`` when matching spaces in the specified format argument.
2571 - Bugs #1668596/#1720897: distutils now copies data files even if
2572 package_dir is empty.
2574 - sha now raises a DeprecationWarning upon import.
2576 - md5 now raises a DeprecationWarning upon import.
2578 - Issue #1385: The hmac module now computes the correct hmac when
2579 using hashes with a block size other than 64 bytes (such as sha384
2582 - mimify now raises a DeprecationWarning upon import.
2584 - MimeWriter now raises a DeprecationWarning upon import.
2586 - tarfile.py: Improved unicode support. Unicode input names are now
2587 officially supported. Added "errors" argument to the TarFile class.
2589 - urllib.ftpwrapper class now accepts an optional timeout.
2591 - shlex.split() now has an optional "posix" parameter.
2593 - The posixfile module now raises a DeprecationWarning.
2595 - Remove the gopherlib module. This also leads to the removal of
2596 gopher support in urllib/urllib2.
2598 - Fix bug in marshal where bad data would cause a segfault due to lack
2599 of an infinite recursion check.
2601 - Removed plat-freebsd2 and plat-freebsd3 directories (and IN.py in
2604 - HTML-escape the plain traceback in cgitb's HTML output, to prevent
2605 the traceback inadvertently or maliciously closing the comment and
2606 injecting HTML into the error page.
2608 - The popen2 module and os.popen* are deprecated. Use the subprocess
2611 - Added an optional credentials argument to SMTPHandler, for use with
2612 SMTP servers which require authentication.
2614 - Patch #1695948: Added optional timeout parameter to SocketHandler.
2616 - Bug #1652788: Minor fix for currentframe.
2618 - Patch #1598415: Added WatchedFileHandler to better support external
2619 log file rotation using e.g. newsyslog or logrotate. This handler is
2620 only useful in Unix/Linux environments.
2622 - Bug #1706381: Specifying the SWIG option "-c++" in the setup.py file
2623 (as opposed to the command line) will now write file names ending in
2626 - As specified in RFC 2616, an HTTP response like 2xx indicates that
2627 the client's request was successfully received, understood, and
2628 accepted. Now in these cases no error is raised in urllib (issue
2631 - Bug #1290505: time.strptime's internal cache of locale information
2632 is now properly recreated when the locale is changed.
2634 - Patch #1685563: remove (don't add) duplicate paths in
2635 distutils.MSVCCompiler.
2637 - Added a timeout parameter to the constructor of other protocols
2638 (telnetlib, ftplib, smtplib and poplib). This is second part of the
2639 work started with create_connection() and timeout in httplib, and
2640 closes patch #723312.
2642 - Patch #1676823: Added create_connection() to socket.py, which may be
2643 called with a timeout, and use it from httplib (whose HTTPConnection
2644 and HTTPSConnection now accept an optional timeout).
2646 - Bug #978833: Revert r50844, as it broke _socketobject.dup.
2648 - Bug #1675967: re patterns pickled with Python 2.4 and earlier can
2649 now be unpickled with Python 2.5 and newer.
2651 - Patch #1630118: add a SpooledTemporaryFile class to tempfile.py.
2653 - Patch #1273829: os.walk() now has a "followlinks" parameter. If set
2654 to True (which is not the default), it visits symlinks pointing to
2657 - Bug #1681228: the webbrowser module now correctly uses the default
2658 GNOME or KDE browser, depending on whether there is a session of one
2659 of those present. Also, it tries the Windows default browser before
2660 trying Mozilla variants.
2662 - Patch #1339796: add a relpath() function to os.path.
2664 - Patch #1681153: the wave module now closes a file object it opened if
2665 initialization failed.
2667 - Bug #767111: fix long-standing bug in urllib which caused an
2668 AttributeError instead of an IOError when the server's response
2669 didn't contain a valid HTTP status line.
2671 - Patch #957650: "%var%" environment variable references are now
2672 properly expanded in ntpath.expandvars(), also "~user" home
2673 directory references are recognized and handled on Windows.
2675 - Patch #1429539: pdb now correctly initializes the __main__ module
2676 for the debugged script, which means that imports from __main__ work
2679 - The nonobvious commands.getstatus() function is now deprecated.
2681 - Patch #1393667: pdb now has a "run" command which restarts the
2682 debugged Python program, optionally with different arguments.
2684 - Patch #1649190: Adding support for _Bool to ctypes as c_bool.
2686 - Patch #1530482: add pydoc.render_doc() which returns the
2687 documentation for a thing instead of paging it to stdout, which
2690 - Patch #1533909: the timeit module now accepts callables in addition
2691 to strings for the code to time and the setup code. Also added two
2692 convenience functions for instantiating a Timer and calling its
2695 - Patch #1537850: tempfile.NamedTemporaryFile now has a "delete"
2696 parameter which can be set to False to prevent the default
2697 delete-on-close behavior.
2699 - Patch #1581073: add a flag to textwrap that prevents the dropping of
2700 whitespace while wrapping.
2702 - Patch #1603688: ConfigParser.SafeConfigParser now checks values that
2703 are set for invalid interpolation sequences that would lead to
2704 errors on reading back those values.
2706 - Added support for the POSIX.1-2001 (pax) format to
2707 tarfile.py. Extended and cleaned up the test suite. Added a new
2710 - Patch #1449244: Support Unicode strings in
2711 email.message.Message.{set_charset,get_content_charset}.
2713 - Patch #1542681: add entries for "with", "as" and "CONTEXTMANAGERS"
2714 to pydoc's help keywords.
2716 - Patch #1555098: use str.join() instead of repeated string
2717 concatenation in robotparser.
2719 - Patch #1635454: the csv.DictWriter class now includes the offending
2720 field names in its exception message if you try to write a record
2721 with a dictionary containing fields not in the CSV field names list.
2723 - Patch #1668100: urllib2 now correctly raises URLError instead of
2724 OSError if accessing a local file via the file:// protocol fails.
2726 - Patch #1677862: Require a space or tab after import in .pth files.
2728 - Patch #1192590: Fix pdb's "ignore" and "condition" commands so they
2729 trap the IndexError caused by passing in an invalid breakpoint
2732 - Patch #1599845: Add an option to disable the implicit calls to
2733 server_bind() and server_activate() in the constructors for
2734 TCPServer, SimpleXMLRPCServer and DocXMLRPCServer.
2736 - Bug #1531963: Make SocketServer.TCPServer's server_address always be
2737 equal to calling getsockname() on the server's socket. Fixed by
2740 - Patch #742598: Add .timeout attribute to SocketServer that calls
2741 .handle_timeout() when no requests are received.
2743 - Bug #1651235: When a tuple was passed to a ctypes function call,
2744 Python would crash instead of raising an error.
2746 - Bug #1646630: ctypes.string_at(buf, 0) and ctypes.wstring_at(buf, 0)
2747 returned string up to the first NUL character.
2749 - Patch #957003: Implement smtplib.LMTP.
2751 - Patch #1481079: add support for HTTP_REFERER to CGIHTTPServer.
2753 - Patch #1675424: Added tests for uncovered code in the zipfile
2754 module. The KeyError raised by Zipfile.getinfo for nonexistent
2755 names now has a descriptive message.
2757 - Bug #1115886: os.path.splitext('.cshrc') gives now ('.cshrc', '').
2759 - unittest now verifies more of its assumptions. In particular,
2760 TestCase and TestSuite subclasses (not instances) are no longer
2761 accepted in TestSuite.addTest(). This should cause no
2762 incompatibility since it never made sense with ordinary subclasses
2763 -- the failure just occurred later, with a more cumbersome
2766 - Patch #787789: allow to pass custom TestRunner instances to
2767 unittest's main() function.
2769 - Patches #1550273, #1550272: fix a few bugs in unittest and add a
2770 comprehensive test suite for the module.
2772 - Patch #1001604: glob.glob() now returns unicode filenames if it was
2773 given a unicode argument and os.listdir() returns unicode filenames.
2775 - Patch #1673619: setup.py identifies extension modules it doesn't
2776 know how to build and those it knows how to build but that fail to
2779 - Patch #912410: Replace HTML entity references for attribute values
2782 - Patch #1663234: you can now run doctest on test files and modules
2783 using "python -m doctest [-v] filename ...".
2785 - Patch #1121142: Implement ZipFile.open.
2787 - Taught setup.py how to locate Berkeley DB on Macs using MacPorts.
2789 - Added heapq.merge() for merging sorted input streams.
2791 - Added collections.namedtuple() for assigning field names to tuples.
2793 - Added itertools.izip_longest().
2795 - Have the encoding package's search function dynamically import using
2796 absolute import semantics.
2798 - Patch #1647484: Renamed GzipFile's filename attribute to name.
2800 - Patch #1517891: Mode 'a' for ZipFile now creates the file if it
2803 - Patch #698833: Support file decryption in zipfile.
2805 - Patch #685268: Consider a package's __path__ in imputil.
2807 - Patch #1463026: Support default namespace in XMLGenerator.
2809 - Patch #1571379: Make trace's --ignore-dir facility work in the face
2810 of relative directory names.
2812 - Bug #1600860: Search for shared python library in LIBDIR, not
2813 lib/python/config, on "linux" and "gnu" systems.
2815 - Patch #1652681: tarfile.py: create nonexistent files in append mode
2816 and allow appending to empty files.
2818 - Bug #1124861: Automatically create pipes if GetStdHandle fails in
2821 - Patch #1634778: add missing encoding aliases for iso8859_15 and
2824 - Patch #1638243: the compiler package is now able to correctly
2825 compile a with statement; previously, executing code containing a
2826 with statement compiled by the compiler package crashed the
2829 - Bug #1643943: Fix time.strptime's support for the %U directive.
2831 - Patch #1507247: tarfile.py: use current umask for intermediate
2834 - Patch #1627441: close sockets properly in urllib2.
2836 - Bug #494589: make ntpath.expandvars behave according to its
2839 - Changed platform module API python_version_tuple() to actually
2840 return a tuple (it used to return a list).
2842 - Added new platform module APIs python_branch(), python_revision(),
2843 python_implementation() and linux_distribution().
2845 - Added support for IronPython and Jython to the platform module.
2847 - The sets module has been deprecated. Use the built-in set/frozenset
2850 - Bug #1610795: make ctypes.util.find_library work on BSD systems.
2852 - Fixes for 64-bit Windows: In ctypes.wintypes, correct the
2853 definitions of HANDLE, WPARAM, LPARAM data types. Make
2854 parameterless foreign function calls work.
2856 - The version number of the ctypes package changed to "1.1.0".
2858 - Bug #1627575: logging: Added _open() method to FileHandler which can
2859 be used to reopen files. The FileHandler instance now saves the
2860 encoding (which can be None) in an attribute called "encoding".
2862 - Bug #411881: logging.handlers: bare except clause removed from
2863 SMTPHandler.emit. Now, only ImportError is trapped.
2865 - Bug #411881: logging.handlers: bare except clause removed from
2866 SocketHandler.createSocket. Now, only socket.error is trapped.
2868 - Bug #411881: logging: bare except clause removed from
2869 LogRecord.__init__. Now, only ValueError, TypeError and
2870 AttributeError are trapped.
2872 - Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj
2875 - Patch #1182394 from Shane Holloway: speed up HMAC.hexdigest.
2877 - Patch #1262036: Prevent TarFiles from being added to themselves
2878 under certain conditions.
2880 - Patch #1230446: tarfile.py: fix ExFileObject so that read() and
2881 tell() work correctly together with readline().
2883 - Patch #1484695: The tarfile module now raises a HeaderError
2884 exception if a buffer given to frombuf() is invalid.
2886 - Bug #1503765: Fix a problem in logging.config with spaces in comma-
2887 separated lists read from logging config files.
2889 - Patch #1604907: Fix problems in logging.handlers caused at logging
2890 shutdown when syslog handlers fail to initialize because of syslogd
2893 - Patch #1608267: fix a race condition in os.makedirs() if the
2894 directory to be created is already there.
2896 - Patch #1610437: fix a tarfile bug with long filename headers.
2898 - Patch #1371075: Make ConfigParser accept optional dict type for
2899 ordering, sorting, etc.
2901 - Bug #1563807: _ctypes built on AIX fails with ld ffi error.
2903 - Bug #1598620: A ctypes Structure cannot contain itself.
2905 - Patch #1070046: Marshal new-style objects like InstanceType in
2908 - cStringIO.truncate(-1) now raises an IOError, like StringIO and
2911 - Patch #1472877: Fix Tix subwidget name resolution.
2913 - Patch #1594554: Always close a tkSimpleDialog on ok(), even if an
2916 - Patch #1538878: Don't make tkSimpleDialog dialogs transient if the
2917 parent window is withdrawn.
2919 - Bug #1597824: return the registered function from atexit.register()
2920 to facilitate usage as a decorator.
2922 - Patch #1360200: Use unmangled_version RPM spec field to deal with
2925 - Patch #1359217: Process 2xx response in an ftplib transfer that
2926 precedes an 1xx response.
2928 - Patch #1355023: support whence argument for GzipFile.seek.
2930 - Patch #1065257: Support passing open files as body in
2931 HTTPConnection.request().
2933 - Bug #1569790: mailbox.py: Maildir.get_folder() and MH.get_folder()
2934 weren't passing the message factory on to newly created Maildir/MH
2937 - Patch #1514543: mailbox.py: In the Maildir class, report errors if
2938 there's a filename clash instead of possibly losing a message.
2939 (Patch by David Watson.)
2941 - Patch #1514544: Try to ensure that messages/indexes have been
2942 physically written to disk after calling .flush() or
2943 .close(). (Patch by David Watson.)
2945 - Patch #1592250: Add elide argument to Tkinter.Text.search.
2947 - Patch #838546: Make terminal become controlling in pty.fork().
2949 - Patch #1351744: Add askyesnocancel helper for tkMessageBox.
2951 - Patch #1060577: Extract list of RPM files from spec file in
2954 - Bug #1586613: fix zlib and bz2 codecs' incremental en/decoders.
2956 - Patch #1583880: fix tarfile's problems with long names and posix/
2959 - Bug #1586448: the compiler module now emits the same bytecode for
2960 list comprehensions as the builtin compiler, using the LIST_APPEND
2963 - Fix codecs.EncodedFile which did not use file_encoding in 2.5.0, and
2964 fix all codecs file wrappers to work correctly with the "with"
2965 statement (bug #1586513).
2967 - Lib/modulefinder.py now handles absolute and relative imports
2970 - Patch #1567274: Support SMTP over TLS.
2972 - Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that ctypes
2973 isn't considered as requiring executable stacks.
2975 - ctypes callback functions only support 'fundamental' data types as
2976 result type. Raise an error when something else is used. This is a
2977 partial fix for Bug #1574584.
2979 - Fix turtle so that time.sleep is imported for the entire library.
2980 Allows the demo2 function to be executed on its own instead of only
2981 when the module is run as a script.
2983 - Bug #813342: Start the IDLE subprocess with -Qnew if the parent is
2984 started with that option.
2986 - Bug #1565150: Fix subsecond processing for os.utime on Windows.
2988 - Support for MSVC 8 was added to bdist_wininst.
2990 - Bug #1446043: correctly raise a LookupError if an encoding name
2991 given to encodings.search_function() contains a dot.
2993 - Bug #1560617: in pyclbr, return full module name not only for
2994 classes, but also for functions.
2996 - Bug #1457823: cgi.(Sv)FormContentDict's constructor now takes
2997 keep_blank_values and strict_parsing keyword arguments.
2999 - Bug #1566602: correct failure of posixpath unittest when $HOME ends
3002 - Bug #1565661: in webbrowser, split() the command for the default
3003 GNOME browser in case it is a command with args.
3005 - Made the error message for time.strptime when the data data and
3006 format do match be more clear.
3008 - Fix a bug in traceback.format_exception_only() that led to an error
3009 being raised when print_exc() was called without an exception set.
3010 In version 2.4, this printed "None", restored that behavior.
3012 - Make webbrowser.BackgroundBrowser usable in Windows (it wasn't
3013 because the close_fds arg to subprocess.Popen is not supported).
3015 - Reverted patch #1504333 to sgmllib because it introduced an infinite
3018 - Patch #1553314: Fix the inspect.py slowdown that was hurting IPython
3019 & SAGE by adding smarter caching in inspect.getmodule()
3021 - Fix missing import of the types module in logging.config.
3023 - Patch #1550886: Fix decimal module context management implementation
3024 to match the localcontext() example from PEP 343.
3026 - Bug #1545341: The 'classifier' keyword argument to the Distutils
3027 setup() function now accepts tuples as well as lists.
3029 - Bug #1541863: uuid.uuid1 failed to generate unique identifiers on
3030 systems with low clock resolution.
3032 - Bug #1531862: Do not close standard file descriptors in subprocess.
3034 - idle: Honor the "Cancel" action in the save dialog (Debian bug
3037 - Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
3038 the first chunk fed to the decoder started with a BOM, but was
3039 longer than 3 bytes.
3041 - The implementation of UnicodeError objects has been simplified
3042 (start and end attributes are now stored directly as Py_ssize_t
3045 - Issue #829951: In the smtplib module, SMTP.starttls() now complies
3046 with RFC 3207 and forgets any knowledge obtained from the server not
3047 obtained from the TLS negotiation itself. Patch contributed by Bill
3050 - Issue #1339: The smtplib.SMTP class has been refactored a bit such
3051 that the SMTP.starttls() caller no longer needs to call ehlo()
3052 beforehand. SMTP.starttls() now raises an exception of the server
3053 does not claim to support starttls. Adds the
3054 SMTP.ehlo_or_helo_if_needed() method. Patch contributed by Bill
3057 - Patch #1089358: Add signal.siginterrupt, a wrapper around
3063 - Patch #1657: added select.epoll and select.kqueue.
3065 - Patch #1506171: added operator.methodcaller().
3067 - Patch #1826: operator.attrgetter() now supports dotted attribute paths.
3069 - Patch #1957: syslogmodule: Release GIL when calling syslog(3).
3071 - Bug #2112: mmap.error is now a subclass of EnvironmentError and not
3072 a direct EnvironmentError.
3074 - Bug #2111: mmap segfaults when trying to write a block opened with
3077 - Bug #2063: correct order of utime and stime in os.times() result on
3080 - Patch #1736: Fix file name handling of _msi.FCICreate.
3082 - Updated ``big5hkscs`` codec to the HKSCS revision of 2004.
3084 - Issue #1940: make it possible to use curses.filter() before
3085 curses.initscr() as the documentation says.
3087 - Backport of _fileio module from Python 3.0.
3089 - Patch #1087741: mmap.mmap is now a class, not a factory function. It
3090 is also subclassable now.
3092 - Patch #1648: added ``sys.getprofile()`` and ``sys.gettrace()``.
3094 - Patch #1663329: added ``os.closerange()`` function to quickly close
3095 a range of file descriptors without considering errors.
3097 - Patch #976880: ``mmap`` objects now have an ``rfind`` method that
3098 works as expected. ``mmap.find`` also takes an optional ``end``
3101 - _winreg's HKEY object has gained __enter__ and __exit__ methods to
3102 support the context manager protocol. The _winreg module also
3103 gained a new function ``ExpandEnvironmentStrings`` to expand
3106 - itertools.starmap() now accepts any iterable input. Previously, it
3107 required the function inputs to be tuples.
3109 - itertools.chain() now has an alternate constructor,
3110 chain.from_iterable().
3112 - Issue #1646: Make socket support TIPC. The socket module now has
3113 support for TIPC under Linux, see http://tipc.sf.net/ for more
3116 - Added interface for Windows' WSAIoctl to socket object and added an
3117 example for a simple network sniffer.
3119 - Bug #1301: Bad assert in _tkinter fixed.
3121 - Added bdist_wininst executable for VS 2008.
3123 - Bug #1604: collections.deque.__init__(iterable) now clears any prior
3124 contents before adding elements from the iterable. This fix brings
3125 the behavior into line with that for list.__init__().
3127 - Added wide char functions to msvcrt module: getwch, getwche, putwch
3128 and ungetwch. The functions accept or return unicode.
3130 - os.access now returns True on Windows for any existing directory.
3132 - Added warnpy3k function to the warnings module.
3134 - Marshal.dumps() now expects exact type matches for int, long, float,
3135 complex, tuple, list, dict, set, and frozenset. Formerly, it would
3136 silently miscode subclasses of those types. Now, it raises a
3139 - Patch #1388440: Add set_completion_display_matches_hook and
3140 get_completion_type to readline.
3142 - Bug #1649098: Avoid declaration of zero-sized array declaration in
3145 - Removed the rgbimg module; been deprecated since Python 2.5.
3147 - Bug #1721309: prevent bsddb module from freeing random memory.
3149 - Bug #1233: fix bsddb.dbshelve.DBShelf append method to work as
3150 intended for RECNO databases.
3152 - pybsddb.sf.net Bug #477182: Load the database flags at database open
3153 time so that opening a database previously created with the DB_DUP
3154 or DB_DUPSORT flag set will keep the proper behavior on subsequent
3155 opens. Specifically: dictionary assignment to a DB object will
3156 replace all values for a given key when the database allows
3157 duplicate values. DB users should use DB.put(k, v) when they want
3158 to store duplicates; not DB[k] = v.
3160 - Add the bsddb.db.DBEnv.lock_id_free method.
3162 - Bug #1686475: Support stat'ing open files on Windows again.
3164 - Patch #1185447: binascii.b2a_qp() now correctly quotes binary
3165 characters with ASCII value less than 32. Also, it correctly quotes
3166 dots only if they occur on a single line, as opposed to the previous
3167 behavior of quoting dots if they are the second character of any
3170 - Bug #1622896: fix a rare corner case where the bz2 module raised an
3171 error in spite of a succesful compression.
3173 - Patch #1654417: make operator.{get,set,del}slice use the full range
3176 - Patch #1646728: datetime.fromtimestamp fails with negative
3177 fractional times. With unittest.
3179 - Patch #1490190: posixmodule now includes os.chflags() and
3180 os.lchflags() functions on platforms where the underlying system
3181 calls are available.
3183 - Patch #1494140: Add documentation for the new struct.Struct object.
3185 - Patch #1432399: Support the HCI protocol for bluetooth sockets
3187 - Patch #1657276: Make NETLINK_DNRTMSG conditional.
3189 - Bug #1653736: Complain about keyword arguments to time.isoformat.
3191 - Bug #1486663: don't reject keyword arguments for subclasses of
3194 - Patch #1610575: The struct module now supports the 't' code, for C99
3197 - Patch #1635058: ensure that htonl and friends never accept or return
3198 negative numbers, per the underlying C implementation.
3200 - Patch #1544279: Improve thread-safety of the socket module by moving
3201 the sock_addr_t storage out of the socket object.
3203 - Patch #1019808: fix bug that causes an incorrect error to be
3204 returned when a socket timeout is set and a connection attempt
3207 - Speed up function calls into the math module.
3209 - Bug #1588217: don't parse "= " as a soft line break in binascii's
3210 a2b_qp() function, instead leave it in the string as quopri.decode()
3213 - Bug #1599782: Fix segfault on bsddb.db.DB().type().
3215 - Bug #1567666: Emulate GetFileAttributesExA for Win95.
3217 - Patch #1576166: Support os.utime for directories on Windows NT+.
3219 - Patch #1572724: fix typo ('=' instead of '==') in _msi.c.
3221 - Bug #1572832: fix a bug in ISO-2022 codecs which may cause segfault
3222 when encoding non-BMP unicode characters.
3224 - Bug #1556784: allow format strings longer than 127 characters in
3225 datetime's strftime function.
3227 - Fix itertools.count(n) to work with negative numbers again.
3229 - RLIMIT_SBSIZE was added to the resource module where available.
3231 - Bug #1551427: fix a wrong NULL pointer check in the win32 version of
3234 - Bug #1548092: fix curses.tparm seg fault on invalid input.
3236 - Patch #1114: fix curses module compilation on 64-bit AIX, & possibly
3237 other 64-bit LP64 platforms where attr_t is not the same size as a
3238 long. (Contributed by Luke Mewburn.)
3240 - Bug #1550714: fix SystemError from itertools.tee on negative value
3243 - Fixed a few bugs on cjkcodecs:
3244 - gbk and gb18030 codec now handle U+30FB KATAKANA MIDDLE DOT
3246 - iso2022_jp_2 codec now encodes into G0 for KS X 1001, GB2312
3247 codepoints to conform the standard.
3248 - iso2022_jp_3 and iso2022_jp_2004 codec can encode JIS X 0213:2
3251 - Bug #1552726: in readline.c, avoid repeatedly polling in interactive
3252 mode by only placing a timeout on the select() if an input hook has
3253 been defined. This prevents an interactive Python from waking up 10
3254 times per second. Patch by Richard Boulton.
3256 - fixed a bug with bsddb.DB.stat: the flags and txn keyword arguments
3259 - Added support for linking the bsddb module against BerkeleyDB 4.5.x,
3262 - Bug #1633621: if curses.resizeterm() or curses.resize_term() is
3263 called, update _curses.LINES, _curses.COLS, curses.LINES and
3266 - Fix an off-by-one bug in locale.strxfrm().
3268 - Fix libffi configure for hppa*-*-linux* | parisc*-*-linux*.
3270 - Build using system ffi library on arm*-linux*.
3272 - Bug #1372: zlibmodule.c: int overflow in PyZlib_decompress
3274 - bsddb module: Fix memory leak when using database cursors on
3275 databases without a DBEnv.
3277 - The sqlite3 module was updated to pysqlite 2.4.1.
3282 - Refactor test_logging to use unittest.
3284 - Refactor test_profile and test_cprofile to use the same code to
3287 - Make test_runpy reentrant by fixing _check_module to clear out any
3288 module being tested. Was causing an error by __import__ doing a
3289 reload on the second run and thus suppressing bytecode recreation.
3291 - Capture socket connection resets and timeouts in test_socket_ssl and
3292 test_urllib2net and raise test.test_support.ResourceDenied.
3294 - Patch #1559413: Fix test_cmd_line if sys.executable contains a
3297 - Added test.test_support.TransientResource which is a context manager
3298 to surround calls to resources that are not guaranteed to work even
3299 if test.test_support.requires says that the resource should exist.
3301 - Added a test for slicing of an exception.
3303 - Added test.test_support.EnvironmentVarGuard. It's a class that
3304 provides a context manager so that one can temporarily set or unset
3305 environment variables.
3307 - Added some tests for modulefinder.
3309 - Converted test_imp to use unittest.
3311 - Fix bsddb test_basics.test06_Transactions to check the version
3314 - test.test_support.catch_warning is a new context manager that can be
3315 used to catch the warnings issued by the warning framework.
3320 - Tools/scripts/reindent.py now creates the backup file using
3321 shutil.copy to preserve user/group and permissions. Added also a
3322 --nobackup option to not create the backup if the user is concerned
3323 regarding this. Check issue 1050828 for more details.
3325 - Tools/scripts/win_add2path.py was added. The simple script modifes
3326 the PATH environment var of the HKCU tree and adds the python bin
3327 and script directory.
3329 - Tools/18n/pygettext.py was added to the list of scripts installed by
3330 Tools/scripts/setup.py (tracker item 642309).
3332 - Added IronPython and Jython support to pybench (part of which was
3335 - Made some minor changes to pybench output to allow the user to see
3336 which Python version is running pybench.
3338 - Added support for the new platform module feature
3339 platform.python_implementation(); this will now be saved in the
3346 - RFE #1765140: Updated documentation on FileHandler and subclasses to
3347 include new optional delay argument.
3349 - Bug #932563: Added section on getting contextual information into
3350 logging output, and added documentation for the new LoggerAdapter
3353 - Bug #1295: Added information about caching of formatted exception
3354 information in the LogRecord by Formatter.format().
3356 - Bug #1637365: add subsection about "__name__ == __main__" to the
3359 - Patch #1698768: updated the "using Python on the Mac" intro.
3361 - Bug #1569057: Document that calling file.next() when the file is
3362 open for writing is undefined.
3364 - Patch #1489771: the syntax rules in Python Reference Manual were
3365 updated to reflect the current Python syntax.
3367 - Patch #1686451: Fix return type for
3368 PySequence_{Count,Index,Fast_GET_SIZE}.
3370 - Patch #1679379: add documentation for fnmatch.translate().
3372 - Bug #1629566: clarify the docs on the return values of parsedate()
3373 and parsedate_tz() in email.utils and rfc822.
3375 - Patch #1671450: add a section about subclassing builtin types to the
3376 "extending and embedding" tutorial.
3378 - Bug #1629125: fix wrong data type (int -> Py_ssize_t) in PyDict_Next
3381 - Bug #1565919: document set types in the Language Reference.
3383 - Bug #1546052: clarify that PyString_FromString(AndSize) copies the
3384 string pointed to by its parameter.
3386 - Bug #1566663: remove obsolete example from datetime docs.
3388 - Bug #1541682: Fix example in the "Refcount details" API docs.
3389 Additionally, remove a faulty example showing PySequence_SetItem
3390 applied to a newly created list object and add notes that this isn't
3397 - Patch #1552024: add decorator support to unparse.py demo script.
3399 - Make auto-generated python.vim file list built-ins and exceptions in
3400 alphatbetical order. Makes output more deterministic and easier to
3401 tell if the file is stale or not.
3403 - Bug #1546372: Fixed small bugglet in pybench that caused a missing
3404 file not to get reported properly.
3410 - Have the search path for building extensions follow the declared
3411 order in $CPPFLAGS and $LDFLAGS when adding directories from those
3412 environment variables.
3414 - Bug #1983: Added a check to pyport to verify that sizeof(pid_t) is
3415 smaller or equal sizeof(long).
3417 - Bug #1234: Fixed semaphore errors on AIX 5.2
3419 - Issue #1726: Remove Python/atof.c from PCBuild/pythoncore.vcproj.
3421 - Removed PCbuild8/ directory and added a new build directory for VS
3422 2005 based on the VS 2008 build directory to PC/VS8.0. The script
3423 PCbuild/vs8to9.py was added to sync changes from PCbuild to
3426 - Moved PCbuild/ directory for VS 2003 to PC/VS7.1 and renamed
3427 PCBuild9/ directory to PCBuild/.
3429 - Bug #1699: Define _BSD_SOURCE only on OpenBSD.
3431 - Bug #1608: use -fwrapv when GCC supports it. This is important,
3432 newer GCC versions may optimize away overflow buffer overflow checks
3433 without this option!
3435 - Patch #1418: Make the AC_REPLACE_FUNCS object files actually work.
3437 - Add a FAST_LOOPS build option that speeds-up looping by trading away
3438 periodic threadstate and signal checking in tight loops. By
3439 default, this option is turned-off. It should only be enabled in
3440 debugged, performance critical applications.
3442 - Patch #786737: Allow building in a tree of symlinks pointing to a
3445 - Bug #1737210: Change Manufacturer of Windows installer to PSF.
3447 - Bug #1746880: Correctly install DLLs into system32 folder on Win64.
3449 - Define _BSD_SOURCE, to get access to POSIX extensions on OpenBSD
3452 - Stop supporting AtheOS and cause a build error in configure for the
3455 - Bug #1655392: don't add -L/usr/lib/pythonX.Y/config to the LDFLAGS
3456 returned by python-config if Python was built with --enable-shared
3457 because that prevented the shared library from being used.
3459 - Patch #1569798: fix a bug in distutils when building Python from a
3460 directory within sys.exec_prefix.
3462 - Bug #1675511: Use -Kpic instead of -xcode=pic32 on Solaris/x86.
3464 - Disable _XOPEN_SOURCE on NetBSD 1.x.
3466 - configure now checks whether gcc supports the PyArg_ParseTuple
3469 - Bug #1578513: Cross compilation was broken by a change to configure.
3470 Repair so that it's back to how it was in 2.4.3.
3472 - Patch #1576954: Update VC6 build directory; remove redundant files
3475 - Bug #1568842: Fix test for uintptr_t.
3477 - Patch #1540470: for OpenBSD 4.0.
3479 - Fix build failure on kfreebsd and on the hurd.
3481 - Fix the build of the library reference in info format.
3483 - Allow Emacs 22 for building the documentation in info format.
3485 - Makefile.pre.in(buildbottest): Run an optional script
3486 pybuildbot.identify to include some information about the build
3493 - Unified naming convention for free lists and their limits. All free
3494 lists in Object/ are named ``free_list``, the counter ``numfree``
3495 and the upper limit is a macro ``PyName_MAXFREELIST`` inside an
3498 - ``PySet_Add()`` can now modify a newly created frozenset. Similarly
3499 to ``PyTuple_SetItem``, it can be used to populate a brand new
3500 frozenset; but it does not steal a reference to the added item.
3502 - Added ``PySet_Check()`` and ``PyFrozenSet_Check()`` to the set API.
3504 - Backport of PyUnicode_FromString(), _FromStringAndSize(), _Format
3505 and _FormatV from Python 3.0. Made PyLong_AsSsize_t and
3506 PyLong_FromSsize_t public functions.
3508 - Patch #1720595: add T_BOOL to the range of structmember types.
3510 - Issue #1534: Added ``PyFloat_GetMax()``, ``PyFloat_GetMin()`` and
3511 ``PyFloat_GetInfo()`` to the float API.
3513 - Issue #1521: On 64bit platforms, using PyArgs_ParseTuple with the t#
3514 of w# format code incorrectly truncated the length to an int, even
3515 when PY_SSIZE_T_CLEAN is set. The str.decode method used to return
3516 incorrect results with huge strings.
3518 - Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
3519 Py_TYPE and Py_REFCNT.
3521 - PEP 3123: Provide forward compatibility with Python 3.0, while
3522 keeping backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size,
3523 and PyVarObject_HEAD_INIT.
3525 - Py_ssize_t fields work in structmember when HAVE_LONG_LONG is not
3528 - Patch #1733960: Allow T_LONGLONG to accept ints.
3530 - T_PYSSIZET can now be used in PyMemberDef lists for Py_ssize_t members.
3532 - Added a new API function ``PyImport_ImportModuleNoBlock``.
3534 - Bug #1637022: Prefix AST symbols with _Py_.
3536 - Fix some leftovers from the conversion from int to Py_ssize_t
3537 (relevant to strings and sequences of more than 2**31 items).
3539 - Make _PyGILState_NoteThreadState() static, it was not used anywhere
3540 outside of pystate.c and should not be necessary.
3542 - ``PyImport_Import`` and ``PyImport_ImportModule`` now always do
3543 absolute imports. In earlier versions they might have used relative
3544 imports under some conditions.
3546 - Added case insensitive comparison methods ``PyOS_stricmp(char*,
3547 char*)`` and ``PyOS_strnicmp(char*, char*, Py_ssize_t)``.
3549 - Bug #1542693: remove semi-colon at end of PyImport_ImportModuleEx
3550 macro so it can be used as an expression.
3556 - Patch #1706: Drop support for Win9x, WinME and NT4. Python now
3557 requires Windows 2000 or greater. The _WINVER and NTDDI_VERSION
3558 macros are set to Win2k for x86/32bit builds and WinXP for AMD64
3561 - Conditionalize definition of _CRT_SECURE_NO_DEPRECATE and
3562 _CRT_NONSTDC_NO_DEPRECATE.
3564 - Bug #1216: Restore support for Visual Studio 2002.
3570 - cfmfile now raises a DeprecationWarning.
3572 - buildtools now raises a DeprecationWarning.
3574 - Removed the macfs module. It had been deprecated since Python 2.5.
3575 This lead to the deprecation of macostools.touched() as it relied
3576 solely on macfs and was a no-op under OS X.
3580 **(For information about older versions, consult the HISTORY file.)**