5 (editors: check NEWS.help for information about editing NEWS using ReST.)
7 What's New in Python 2.6 release candidate 1?
8 =============================================
10 *Release date: XX-XXX-2008*
15 - Issue #3751: str.rpartition would perform a left-partition when called with
18 - Issue #3683: Fix compilation when --without-threads is given.
20 - Issue #3668: Fix a memory leak with the "s*" argument parser in
21 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
22 was correctly parsed but parsing of subsequent arguments failed.
24 - Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
25 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
26 mechanism. In the process, fix a bug where isinstance() and issubclass(),
27 when given a tuple of classes as second argument, were looking up
28 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
31 - Fix crashes on memory allocation failure found with failmalloc.
33 - Fix memory leaks found with valgrind and update suppressions file.
35 - Fix compiler warnings in opt mode which would lead to invalid memory reads.
37 - Fix problem using wrong name in decimal module reported by pychecker.
39 - Issue #3642: Changed type of numarenas from uint to size_t
40 in order to silence a compilier warning on 64bit OSes.
42 - Silenced another compiler warning about a used but not defined
43 function 'stringlib_contains_obj'.
45 - Added warnings on the use of ``__getslice__``, ``__setslice__``, or
48 - Issue #3678: Correctly pass LDFLAGS and LDLAST to the linker on shared
49 library targets in the Makefile.
54 - Aliased PyObject_Bytes to PyObject_Str.
59 - Issue #3726: Allowed spaces in separators in logging configuration files.
61 - Issue #3719: platform.architecture() fails if there are spaces in the
62 path to the Python binary.
64 - Issue 3602: Moved test.test_support.catch_warning() to
65 warnings.catch_warnings() along with some API cleanup. Expanding the tests
66 for catch_warnings() also led to an improvement in the raising of a
67 DeprecationWarning related to warnings.warn_explicit().
69 - The deprecation warnings for the old camelCase threading API were removed.
71 - logging: fixed lack of use of encoding attribute specified on a stream.
73 - Silenced a trivial compiler warning in the sqlite module.
75 - Fixed two format strings in the _collections module.
77 - Issue #3703: _fileio.FileIO gave unhelpful error message when trying to open a
80 - Issue #3708: os.urandom no longer goes into an infinite loop when passed a
81 non-integer floating point number.
86 - Issue #2975: When compiling several extension modules with Visual Studio 2008
87 from the same python interpreter, some environment variables would grow
90 - Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
91 exploitation of poor argument checking.
94 What's New in Python 2.6 beta 3?
95 ================================
97 *Release date: 20-Aug-2008*
102 - Issue #1878: Remove Py_TPFLAGS_HAVE_VERSION_TAG from
103 Py_TPFLAGS_DEFAULT when not building the core. This means 3rd party
104 extensions do not automatically benefit from the class attribute
105 cache; they will have to explicitly add Py_TPFLAGS_HAVE_VERSION_TAG
106 to their tp_flags field if they care. This is a backwards
107 compatibility feature; in 3.0, all types will use the cache by
110 - Keyword arguments can now follow starred arguments. (``f(a, *args,
111 keyword=23)`` is now valid syntax.)
113 - ctypes function pointers that are COM methods have a boolean True
116 - Issue #3139: Make buffer-interface thread-safe wrt. PyArg_ParseTuple,
117 by denying s# to parse objects that have a releasebuffer procedure,
120 - Issue #3537: Fix an assertion failure when an empty but presized dict
121 object was stored in the freelist.
123 - Issue #1481296: Make long(float('nan')) and int(float('nan')) raise
124 ValueError consistently across platforms.
126 - Issue #3479: On platforms where sizeof(int) is smaller than sizeof(long)
127 (64bit Unix, for example), unichr() would truncate its argument and return
128 u'\x00' for unichr(2**32). Now it properly raises an OverflowError.
130 - Apply security patches from Apple.
132 - Issue #2542: Now that issubclass() may call arbitrary code, ensure that
133 PyErr_ExceptionMatches returns 0 when an exception occurs there.
135 - Issue #1819: function calls with several named parameters are now on
136 average 35% faster (as measured by pybench).
138 - Issue #2378: An unexpected UnboundLocalError or NameError could appear when
139 the python debugger steps into a class statement: the free variables (local
140 variables defined in an outer scope) would be deleted from the outer scope.
142 - Issue #2620: Overflow checking when allocating or reallocating memory
143 was not always being done properly in some python types and extension
144 modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
145 all been updated to perform better checks and places in the code that
146 would previously leak memory on the error path when such an allocation
147 failed have been fixed.
152 - Issue #3612: Added some missing basic types in ctypes.wintypes.
154 - The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
155 symtable.Symbol have been deprecated for removal in 3.0 and the next release.
157 - Issue #2234: distutils failed for some versions of the cygwin compiler. The
158 version reported by these tools does not necessarily follow the python
159 version numbering scheme, so the module is less strict when parsing it.
161 - Issue #2235: Added Py3k warnings for types which will become unhashable
162 under the stricter __hash__ inheritance rules in 3.0. Several types
163 which did not meet the rules for hash invariants and were already
164 unhashable in 3.0 have now been explicitly flagged as unhashable in
165 2.6 as well (collections.Mapping, collections.Set, unittest.TestSuite,
166 xml.dom.minidom.NamedNodeMap, numbers.Number, UserList.UserList)
168 - Update __all__ for cookielib, csv, os, urllib2, and weakref to include things
169 imported into the module but exposed as part of the module's API.
171 - Remove an unneeded import of abc.ABCMeta from 'inspect'.
173 - Remove unneeded imports of 'sys' and 'warnings' from 'io'.
175 - Remove unneeded imports of 'warnings' from shelve, filecmp, and dummy_thread.
177 - Issue #3575: Incremental decoder's decode function now takes bytearray
178 by using 's*' instead of 't#'.
180 - Issue #2222: Fixed reference leak when occured os.rename()
181 fails unicode conversion on 2nd parameter. (windows only)
183 - Issue 2464. urllib2 now supports a malformation in the URL received
186 - Silence the DeprecationWarning raised when importing mimetools in
187 BaseHTTPServer, cgi (and rfc822), httplib.
189 - Issue #2776: fixed small issue when handling an URL with double slash
190 after a 302 response in the case of not going through a proxy.
192 - Issue #2676: in the email package, content-type parsing was hanging on
193 pathological input because of quadratic or exponential behaviour of a
196 - Issue #3476: binary buffered reading through the new "io" library is now
199 - Silence the DeprecationWarning of rfc822 when it is imported by mimetools
200 since mimetools itself is deprecated. Because modules are cached, all
201 subsequent imports of rfc822 will not raise a visible DeprecationWarning.
203 - Issue #3134: shutil referenced undefined WindowsError symbol.
205 - Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
206 menu entries were not deleted.
208 - Copied the implementation of reduce() to _functools.reduce() to have a
209 version that did not raise a DeprecationWarning under -3.
211 - Issue #3205: When iterating over a BZ2File fails allocating memory, raise
212 a MemoryError rather than silently stop the iteration.
214 - Issue #3487: sre "bytecode" validator. Passing invalid "re-bytecode"
215 to _sre.compile() will now be rejected. This should not affect anybody
216 since the re.compile() function never generates invalid re-bytecode.
218 - Issue #3436: Make csv.DictReader's fieldnames attribute a property so that
219 upon first access it can be automatically initialized from the csv file if
220 it wasn't initialized during instantiation.
222 - Issue #2338: Create imp.reload() to help with transitioning to Python 3.0 as
223 the reload() built-in has been removed.
225 - Changed code in the following modules/packages to remove warnings raised
226 while running under the ``-3`` flag: aifc, asynchat, asyncore, bdb, bsddb,
227 ConfigParser, cookielib, csv, difflib, distutils, DocXMLRPCServer, email,
228 filecmp, fileinput, inspect, logging, modulefinder, pdb, pickle, profile,
229 pstats, pydoc, re, rlcompleter, SimpleXMLRPCServer, shelve, socket,
230 subprocess, sqlite3, tarfile, Tkinter, test.test_support, textwrap,
231 threading, tokenize, traceback, urlparse, wsgiref, xml, xmlrpclib.
233 - Issue #3039: Fix tarfile.TarFileCompat.writestr() which always
234 raised an AttributeError.
236 - Issue #2523: Fix quadratic behaviour when read()ing a binary file without
237 asking for a specific length. This problem only affected files opened
238 using the new "io" module, not the built-in open() function.
240 - Issue #3449: Update decimal module to use most recent specification
241 (v. 1.68) and tests (v. 2.58) from IBM.
243 - Issue 3437: Bug fix in robotparser parsing of Allow: lines.
245 - Issue 1592: Improve error reporting when operations are attempted
248 - Deprecate the "ast" parser function aliases.
250 - Issue #3120: On 64-bit Windows the subprocess module was truncating handles.
252 - Issue #3303: Fix a crash in locale.strcoll() when calling it with
255 - Issue #3302: Fix several crashes when calling locale's gettext functions
258 - Issue #3389: Allow resolving dotted names for handlers in logging
261 - Deprecate the sunaudio module for removal in Python 3.0.
263 - Issue #3394: zipfile.writestr sets external attributes when passed a
264 file name rather than a ZipInfo instance, so files are extracted with
265 mode 0600 rather than 000 under Unix.
267 - Issue #1857: subprocess.Popen.poll gained an additional _deadstate keyword
268 argument in python 2.5, this broke code that subclassed Popen to include its
269 own poll method. Fixed my moving _deadstate to an _internal_poll method.
274 - Generate the PatternGrammar pickle during "make install".
279 - Issue #2235: the C API function PyObject_HashNotImplemented and its
280 interaction with the tp_hash slot (added in 2.6b2) are now documented
282 - Issue #643841: The language reference now provides more detailed
283 coverage of the lookup process for special methods. The disclaimers
284 regarding lack of coverage of new-style classes have also been
285 removed, since the coverage is now fairly reasonable.
288 What's New in Python 2.6 beta 2?
289 ================================
291 *Release date: 17-Jul-2008*
296 - Issue #3156: Fix inconsistent behavior of the bytearray type: all
297 its methods now allow for items objects that can be converted to
298 an integer using operator.index().
300 - Issue #3360: Fix incorrect parsing of '020000000000.0', which
301 produced a ValueError instead of giving the correct float.
303 - Issue #3083: Add alternate (#) formatting for bin, oct, hex output
304 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
306 - Issue #3008: the float type has a new instance method 'float.hex'
307 and a new class method 'float.fromhex' to convert floating-point
308 numbers to and from hexadecimal strings, respectively.
310 - Issue #2235: __hash__ is once again inherited by default. To allow
311 collections.Hashable to remain meaningful in the presence of the
312 default hash implementation (object.__hash__), it is now possible
313 to explicit block inheritance of hash by setting __hash__=None at
314 the Python level, or tp_hash=PyObject_HashNotImplemented at the C
317 - Issue #3221: Issue a RuntimeWarning instead of raising SystemError if
318 the parent module cannot be found while performing an absolute import.
319 This means that an incorrectly defined __package__ attribute will
320 now only prevent relative imports in that module rather than causing
321 all imports from that module to fail.
323 - Issue #2517: Allow unicode messages in Exceptions again by correctly
324 bypassing the instance dictionary when looking up __unicode__ on
327 - Issue #3242: Fix a crash inside the print statement, if sys.stdout is
328 set to a custom object whose write() method happens to install
329 another file in sys.stdout.
331 - Issue #3088: Corrected a race condition in classes derived from
332 threading.local: the first member set by a thread could be saved in
333 another thread's dictionary.
335 - Issue #3004: Minor change to slice.indices(): the start and stop
336 arguments are now treated identically, making the behaviour easier
337 to describe and understand. For example, slice(None, -10,
338 1).indices(9) now returns (0, 0, 1) instead of (0, -1, 1), and
339 slice(None, 10, -1).indices(10) returns (9, 9, -1) instead of (9,
342 - Issue #3219: Calling a function with repeated keyword arguments,
343 f(a=2, a=23), would not cause a syntax error. This was a regression
344 from 2.4 caused by the switch to the new compiler.
346 - Issue #2862: Make int and float freelist management consistent with
347 other freelists. Changes their CompactFreeList apis into
348 ClearFreeList apis and calls them via gc.collect().
353 - Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
354 api functions without holding the GIL, which could lead to a fatal
355 error when they failed.
357 - Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
359 - Issue #3395: fix reference in test_multiprocessing to old debugInfo method
361 - Issue #3312: Fix two crashes in sqlite3.
363 - Issue #1608818: Fix misbehavior in os.listdir() if readdir() fails.
365 - Issue #3125: Remove copy_reg in multiprocessing and replace it with
366 ForkingPickler.register() to resolve conflict with ctypes.
368 - Issue #3090: Fixed ARCHFLAGS parsing on OS/X
370 - Issue #3313: Fixed a crash when a failed dlopen() call does not set
371 a valid dlerror() message.
373 - Issue #3258: Fixed a crash when a ctypes POINTER type to an
374 incomplete structure was created.
376 - Issue #3339: dummy_thread.acquire() should not return None.
378 - Issue #3285: Fractions from_float() and from_decimal() accept Integral arguments.
380 - Issue #3301: Bisect module behaved badly when lo was negative.
382 - Issue #839496: SimpleHTTPServer used to open text files in text mode. This is
383 both unnecessary (HTTP allows text content to be sent in several forms) and
384 wrong because the actual transmitted size could differ from the
385 content-length. The problem had been corrected in the 2.4 branch, but never
388 - Issue #2663: add filtering capability to shutil.copytree().
390 - Issue #1622: Correct interpretation of various ZIP header fields.
392 - Issue #1526: Allow more than 64k files to be added to Zip64 file.
394 - Issue #1746: Correct handling of zipfile archive comments (previously
395 archives with comments over 4k were flagged as invalid). Allow writing
396 Zip files with archives by setting the 'comment' attribute of a ZipFile.
398 - Issue #449227: The rlcompleter module now adds "(" to callable objects
401 - Issue #3190: Pydoc now hides the automatic module attribute __package__ (the
402 handling is now the same as that of other special attributes like __name__).
404 - Issue #2885 (partial): The urllib.urlopen() function has been deprecated for
405 removal in Python 3.0 in favor of urllib2.urlopen().
407 - Issue #2113: Fix error in subprocess.Popen if the select system call is
408 interrupted by a signal.
410 - Issue #3309: Fix bz2.BZFile iterator to release its internal lock
411 properly when raising an exception due to the bz2file being closed.
414 - Issue #3094: httplib.HTTPSConnection Host: headers no longer include the
415 redundant ":443" port number designation when the connection is using the
416 default https port (443).
418 - Issue #874900: after an os.fork() call the threading module state is cleaned
419 up in the child process to prevent deadlock and report proper thread counts
420 if the new process uses the threading module.
425 - test.test_support.catch_warning now keeps track of all warnings it sees
426 and is now better documented. Explicit unit tests for this context manager
427 have been added to test_warnings.
432 - Issue #3215: Build sqlite3 as sqlite3.dll, not sqlite3.pyd.
438 - Document that robotparser has been renamed to urllib.robotparser in
441 - Document that urlparse has been renamed to urllib.parse in Python 3.0.
443 - Document that urllib2 is split across multiple modules and renamed in
446 - Document that urllib is split across multiple modules and renamed in
450 What's New in Python 2.6 beta 1?
451 ================================
453 *Release date: 18-June-2008*
458 - Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
459 argument being anything other than a dict or None. Also fixed a bug in error
460 handling when 'message' and 'category' were both set to None, triggering a
463 - Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
464 holds the last (strong) reference to its referent.
466 - Add future_builtins.ascii().
468 - Several set methods now accept multiple arguments: update(), union(),
469 intersection(), intersection_update(), difference(), and difference_update().
471 - Issue #2898: Added sys.getsizeof() to retrieve size of objects in bytes.
473 - New environment variable PYTHONIOENCODING.
475 - Patch #2488: Add sys.maxsize.
477 - Issue #2353: file.xreadlines() now emits a Py3k warning.
479 - Issue #2863: generators now have a ``gen.__name__`` attribute that
480 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
481 ``func.func_code.co_name``. The repr() of a generator now also
484 - Issue #2831: enumerate() now has a ``start`` argument.
486 - Issue #2801: fix bug in the float.is_integer method where a
487 ValueError was sometimes incorrectly raised.
489 - Issue #2790: sys.flags was not properly exposing its bytes_warning
492 - Issue #2196: hasattr() now lets exceptions which do not inherit
493 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
496 - Added checks for integer overflows, contributed by Google. Some are
497 only available if asserts are left in the code, in cases where they
498 can't be triggered from Python code.
503 - Issue #1179: [CVE-2007-4965] Integer overflow in imageop module.
505 - Issue #3116: marshal.dumps() had quadratic behavior for strings > 32Mb.
507 - Issue #2138: Add factorial() to the math module.
509 - The heapq module does comparisons using LT instead of LE. This
510 makes its implementation match that used by list.sort().
512 - Issue #2819: add full-precision summation function to math module,
513 based on Hettinger's ASPN Python Cookbook recipe.
515 - Issue #2592: delegate nb_index and the floor/truediv slots in
518 - Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
521 - Support for Windows 9x has been removed from the winsound module.
523 - bsddb module updated to version 4.7.3pre2.
524 http://www.jcea.es/programacion/pybsddb.htm#bsddb3-4.7.3. This
525 code should be compatible with Python 3.0.
527 - Issue #2858: Fix potential memory corruption when
528 bsddb.db.DBEnv.lock_get and other bsddb.db object constructors
531 - Issue #2669: bsddb/__init__.py iteration no longer silently fails when
532 the database has changed size during iteration. It now raises a
533 RuntimeError in the same manner as a dictionary.
535 - Issue #2870: cmathmodule.c compile error.
537 - Added a threading.Thread.ident property.
542 - logging.config: Removed out-of-date comment in _install_handlers and
543 used issubclass in place of equality comparison of classes.
545 - Issue #2722: Now the os.getcwd() supports very long path names.
547 - Issue #2888: Fixed the behaviour of pprint when working with nested
548 structures, to match the behaviour of 2.5 and 3.0 (now follows the common
551 - Issue #1817: cgi now correctly handles the querystring on POST requests
553 - Issue #3136: fileConfig()'s disabling of old loggers is now conditional via
554 an optional disable_existing_loggers parameter, but the default value is
555 such that the old behaviour is preserved. Thanks to Leandro Lucarella for
558 - Issue #3126: StreamHandler and FileHandler check before calling "flush" and
559 "close" that the stream object has these, using hasattr (thanks to bobf for
562 - Issue #2912: platform.uname now tries to determine unknown information even if
565 - The rfc822 module has been deprecated for removal in 3.0.
567 - The mimetools module has been deprecated for removal in 3.0.
569 - The ctypes.byref function now takes an optional second parameter
570 which allows to specify an offset in bytes for the constructed
573 - Added the ast module.
575 - Added the multiprocessing module, PEP 371.
577 - Factored out the indentation cleaning from inspect.getdoc() into
578 inspect.cleandoc() to ease standalone use.
580 - Issue #1798: Add ctypes calling convention that allows safe access
583 - Issue #2404: ctypes objects support the new pep3118 buffer interface.
585 - Patch #2125: Add GetInteger and GetString methods for
586 msilib.Record objects.
588 - Issue #2782: The datetime module's strftime methods now accept
589 unicode format strings just as time.strftime always has.
591 - The sgmllib and htmllib modules have been deprecated for removal
594 - Issue #3011: locale module alias table was updated to the latest
595 version from the X.org locale.alias file.
597 - Issue #1797 (partial fix): ctypes NULL function pointers have a
598 False boolean value now.
600 - Issue #2985: Allow 64-bit integer responses (``<i8>``) in XMLRPC
603 - Issue #2877: The UserString.MutableString class has been removed in
606 - Do not close external file objects passed to tarfile.open(mode='w:bz2')
607 when the TarFile is closed.
609 - Issue #2959: For consistency with other file-like objects, gzip's
610 GzipFile.close() can now be called multiple times without raising
613 - Issue #1390: Raise ValueError in toxml when an invalid comment would
614 otherwise be produced.
616 - Issue #2914: TimedRotatingFileHandler now takes an optional keyword
617 argument "utc" to use UTC time rather than local time.
619 - Issue #2929: TimedRotatingFileHandler was using the wrong path when
620 deleting old log files (filename only instead of full path).
622 - Issue #1775025: You can now specify zipfile members to open(),
623 read() or extract() via a ZipInfo instance. This allows handling
624 duplicate filenames in zipfiles.
626 - Issue #961805: Fix Text.edit_modified() in Tkinter.
628 - Issue #1793: Function ctypes.util.find_msvcrt() added that returns
629 the name of the C runtime library that Python uses.
630 ctypes.util.find_library(name) now call this function when name is
633 - The statvfs module has been deprecated for removal in Python 3.0.
635 - The sunaudiodev and SUNAUDIODEV modules have been deprecated for
636 removal in Python 3.0.
638 - The WAIT module from IRIX has been deprecated for removal in Python
641 - The torgb module from IRIX has been deprecated for removal in Python
644 - The SV module from IRIX has been deprecated for removal in Python
647 - The readcd module from IRIX has been deprecated for removal in
650 - The panelparser module from IRIX has been deprecated for removal in
653 - The panel module from IRIX has been deprecated for removal in Python
656 - The jpeg module from IRIX has been deprecated for removal in Python
659 - The IOCTL module from IRIX has been deprecated for removal in Python
662 - The IN module from IRIX has been deprecated for removal in Python
665 - The imgfile module from IRIX has been deprecated for removal in
668 - The GLWS module from IRIX has been deprecated for removal in Python
671 - The GET module from IRIX has been deprecated for removal in Python
674 - The fm module from IRIX has been deprecated for removal in Python
677 - The FL, flp, and fl modules from IRIX have been deprecated for
678 removal in Python 3.0.
680 - The FILE module on IRIX has been deprecated for removal in Python
683 - The ERRNO module on IRIX has been deprecated for removal in Python
686 - The DEVICE, GL, gl, and cgen modules (which indirectly includes
687 cgensupport) have been deprecated for removal in Python 3.0.
689 - The CL, CL_old, and cl modules for IRIX have been deprecated for
690 removal in Python 3.0.
692 - The cdplayer module for IRIX has been deprecated for removal in
695 - The cddb module for IRIX has been deprecated for removal in Python
698 - The cd and CD modules for IRIX have been deprecated for removal in
701 - The al and AL modules for IRIX have been deprecated for removal in
704 - Issue #1713041: fix pprint's handling of maximum depth.
706 - The timing module has been deprecated for removal in Python 3.0.
708 - The sv module has been deprecated for removal in Python 3.0.
710 - The multifile module has been deprecated as per PEP 4.
712 - The imageop module has been deprecated for removal in Python 3.0.
714 - Issue #2250: Exceptions raised during evaluation of names in
715 rlcompleter's ``Completer.complete()`` method are now caught and
718 - Issue #2659: Added ``break_on_hyphens`` option to textwrap
721 - The mhlib module has been deprecated for removal in Python 3.0.
723 - The linuxaudiodev module has been deprecated for removal in Python
726 - The ihooks module has been deprecated for removal in Python 3.0.
728 - The fpformat module has been deprecated for removal in Python 3.0.
730 - The dl module has been deprecated for removal in Python 3.0.
732 - The Canvas module has been deprecated for removal in Python 3.0.
734 - The compiler package has been deprecated for removal in Python 3.0.
736 - The Bastion and rexec modules have been deprecated for removal in
739 - The bsddb185 module has been deprecated for removal in Python 3.0.
741 - The pure module has been deprecated for removal in Python 3.0.
743 - Issue #2487: change the semantics of math.ldexp(x, n) when n is too
744 large to fit in a C long. ldexp(x, n) now returns a zero (with
745 suitable sign) if n is large and negative; previously, it raised
748 - The toaiff module has been deprecated for removal in Python 3.0.
750 - The test.testall module has been deprecated for removal in Python
753 - The new module has been deprecated for removal in Python 3.0.
755 - The user module has been deprecated for removal in Python 3.0.
757 - The stringold module has been deprecated for removal in Python 3.0.
759 - The mutex module has been deprecated for removal in Python 3.0.
761 - The imputil module has been deprecated for removal in Python 3.0.
763 - test.test_support.catch_warning() gained a 'record' argument.
765 - os.path.walk is deprecated in favor of os.walk.
767 - pdb gained the "until" command.
769 - The Mac Modules (including Carbon) have been deprecated for removal
772 - Library: on MacOS X you can now set ``ARCHFLAGS`` in the shell
773 environment to control the '-arch' flags that are used to build
774 an extension. This was added for compatibility with Apple's build
777 - The bundled OSX-specific copy of libbffi is now in sync with the version
778 shipped with PyObjC 2.0 and includes support for x86_64 and ppc64 platforms.
780 - The threading module gained aliases for names that will be removed in the
786 - The Windows installer now includes Tk 8.5, bzip2 1.0.5, and SQLite 3.5.9.
788 - Patch #1722225: Support QNX 6.
790 - ``Lib/lib-old`` is now added to sys.path.
792 - On MacOS X it is now possible to install the framework in 64-bit
793 mode or even as a 4-way universal binary (that is, PPC, i386,
794 PPC64 and x86_64 support in one binary).
796 This is controlled by the configure argument ``--with-universal-archs``:
798 - ``--with-universal-archs=all``: install 4-way universal
800 - ``--with-universal-archs=32-bit``: install 2-way universal, 32-bit (the default)
802 - ``--with-universal-archs=64-bit``: install 2-way universal, 64-bit
804 This option should be used in combination with ``--enable-universalsdk=``.
806 NOTE: 64-bit and 4-way builds are only suppported on Mac OS X 10.5 (or later).
812 - Add ``PyType_Modified()`` as a public API to clear the type cache.
814 - The PyBytes functions have been renamed to PyByteArray.
816 - The PyString functions have been renamed to PyBytes. A batch of
817 defines were added so that the linker still sees the original
821 What's New in Python 2.6 alpha 3?
822 =================================
824 *Release date: 08-May-2008*
829 - Issue #2719: backported the ``next()`` builtin from Python 3.
831 - Issue #2681: The octal literal ``0o8`` was incorrecly acctepted. Now
832 it properly raises a SyntaxError.
834 - Issue #2617: Reserved -J and -X arguments for Jython, IronPython and
835 other implementations of Python.
837 - Implemented PEP 370: Per user site-packages directory.
842 - Issue #2670: Fix a failure in urllib2.build_opener(), when passed
843 two handlers that derive the same default base class.
845 - Added kill, terminate and send_signal(sig) to subprocess.Popen.
847 - Added phase(z) -> phi, polar(z) -> r, phi and rect(r, phi) -> z to
850 - Four new methods were added to the math and cmath modules: acosh,
851 asinh, atanh and log1p.
853 - zlib.decompressobj().flush(value) no longer crashes the interpreter
854 when passed a value less than or equal to zero.
856 - Issue #1631171: Re-implement the 'warnings' module in C (the
857 original Python code has been kept as backup). This will allow for
858 using the 'warning's machinery in such places as the parser where
859 use of pure Python code is not possible. Both the ``showarning()``
860 and ``formatwarning()`` gain an optional 'line' argument which is
861 not called by default for backwards-compatibility reasons. Setting
862 ``warnings.showwarning()`` to an implementation that lacks support
863 for the ``line`` argument will raise a DeprecationWarning.
868 - The audiodev module has been deprecated for removal in Python 3.0.
870 - Issue #2750: Add the 'json' package. Based on simplejson 1.9 and
871 contributed by Bob Ippolito.
873 - Issue #1734346: Support Unicode file names for zipfiles.
875 - Issue #2581: distutils: Vista UAC/elevation support for
878 - Issue #2635: Fix bug in 'fix_sentence_endings' textwrap.fill option,
879 where an extra space was added after a word containing (but not
880 ending in) '.', '!' or '?'.
882 - Add from_buffer() and from_buffer_copy() class methods to ctypes
885 - Issue #2682: ctypes callback functions no longer contain a cyclic
886 reference to themselves.
888 - The getpass module has been improved on Unix. It now uses /dev/tty
889 by default and uses stderr instead of stdout. A GetPassWarning is
890 issued when input echo cannot be controlled.
892 - Issue #2014: Allow XML-RPC datetime objects to have dates before
895 - Issue #2439: Added new function pkgutil.get_data(), which is a
896 convenience wrapper for the PEP 302 get_data() API.
898 - Issue #2616: The ctypes.pointer() and ctypes.POINTER() functions are
899 now implemented in C for better performance.
901 - Issue #2408: The ``_types`` module, which was used as in
902 implementation detail of the public ``types`` module, has been
903 removed and replaced by pure python code.
905 - Issue #2513: distutils on Windows is now capable of cross-compiling
906 extension modules between 32 and 64 bit platforms. See the distutls
907 build documentation for more information.
909 - Issue #815646: Individual file objects may now be used from multiple
910 threads at once without fear of crashing the Python interpreter. If
911 file.close() is called while an object is in use by another thread
912 an IOError exception will be raised and the file will not be closed.
914 - The bundled libffi copy is now in sync with the recently released
915 libffi3.0.5 version, apart from some small changes to
916 Modules/_ctypes/libffi/configure.ac.
918 - Issue #2385: distutils.core.run_script() makes __file__ available,
919 so the controlled environment will more closely mirror the typical
920 script environment. This supports setup.py scripts that refer to
926 - Issue #2550: The approach used by client/server code for obtaining
927 ports to listen on in network-oriented tests has been refined in an
928 effort to facilitate running multiple instances of the entire
929 regression test suite in parallel without issue.
930 test_support.bind_port() has been fixed such that it will always
931 return a unique port -- which wasn't always the case with the
932 previous implementation, especially if socket options had been set
933 that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The
934 new implementation of bind_port() will actually raise an exception
935 if it is passed an AF_INET/SOCK_STREAM socket with either the
936 SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if
937 available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on
938 the socket it's been passed. This currently only applies to
939 Windows. This option prevents any other sockets from binding to the
940 host/port we've bound to, thus removing the possibility of the
941 'non-deterministic' behaviour, as Microsoft puts it, that occurs
942 when a second SOCK_STREAM socket binds and accepts to a host/port
943 that's already been bound by another socket. The optional preferred
944 port parameter to bind_port() has been removed. Under no
945 circumstances should tests be hard coding ports!
947 test_support.find_unused_port() has also been introduced, which will
948 pass a temporary socket object to bind_port() in order to obtain an
949 unused port. The temporary socket object is then closed and
950 deleted, and the port is returned. This method should only be used
951 for obtaining an unused port in order to pass to an external program
952 (i.e. the -accept [port] argument to openssl's s_server mode) or as
953 a parameter to a server-oriented class that doesn't give you direct
954 access to the underlying socket used.
956 Finally, test_support.HOST has been introduced, which should be used
957 for the host argument of any relevant socket calls (i.e. bind and
960 The following tests were updated to following the new conventions:
961 test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib,
962 test_poplib, test_ftplib, test_telnetlib, test_socketserver,
963 test_asynchat and test_socket_ssl.
965 It is now possible for multiple instances of the regression test
966 suite to run in parallel without issue.
971 - Issue #1496032: On alpha, use -mieee when gcc is the compiler.
973 - Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
974 gcc is used as compiler.
976 - Issue #2573: On MacOS X it is now possible to install the framework
977 with a different name using --with-framework-name=NAME.
982 - Added implementation of copysign, acosh, asinh, atanh and log1p to
983 the new files Include/pymath.h and Python/pymath.h for platforms
984 which provide the functions through their libm. The files also
985 contains several helpers and constants for math.
987 - Added a new convenience macro, PyErr_WarnPy3k, for issuing Py3k warnings.
990 What's New in Python 2.6 alpha 2?
991 =================================
993 *Release date: 02-Apr-2008*
998 - Issue #1733757: The interpreter would hang on shutdown if the
999 tracing function set by sys.settrace is still active and happens to
1000 call threading.currentThread().
1002 - Patch #1442: properly report exceptions when the PYTHONSTARTUP file
1005 - The compilation of a class nested in another class used to leak one
1006 reference on the outer class name.
1008 - Patch #1810: compile() can now compile _ast trees as returned by
1009 ``compile(..., PyCF_ONLY_AST)``.
1011 - Patch #2426: Added sqlite3.Connection.iterdump method to allow easy
1012 dumping of databases. Contributed by Paul Kippes at PyCon 2008.
1014 - Patch #2477: Added from __future__ import unicode_literals.
1016 - Added backport of bytearray type.
1018 - Issue #2355: add Py3k warning for buffer().
1020 - Issue #1477: With narrow Unicode builds, the unicode escape sequence
1021 \Uxxxxxxxx did not accept values outside the Basic Multilingual
1022 Plane. This affected raw unicode literals and the
1023 'raw-unicode-escape' codec. Now UTF-16 surrogates are generated in
1024 this case, like normal unicode literals and the 'unicode-escape'
1027 - Issue #2348: add Py3k warning for file.softspace.
1029 - Issue #2346/#2347: add Py3k warnings for __methods__ and
1032 - Issue #2358: Add a Py3k warning on sys.exc_clear() usage.
1034 - Issue #2400: Allow relative imports to "import *".
1036 - Issue #1745: Backport print function with ``from __future__ import
1039 - Issue #2332: add new attribute names for instance method objects.
1040 The two changes are: im_self -> __self__ and im_func -> __func__
1042 - Issue #2379: Raise a Py3K warning for __getitem__ or __getslice__ on
1043 exception instances.
1045 - Issue #2371: Add a Py3k warning when catching an exception that
1046 doesn't derive from BaseException.
1048 - Issue #2341: Add a Py3k warning when raising an exception that
1049 doesn't derive from BaseException.
1051 - Issue #2321: use pymalloc for unicode object string data to reduce
1052 memory usage in some circumstances.
1054 - PEP 3127: octal literals now start with "0o". Old-style octal
1055 literals are still valid. There are binary literals with a prefix of
1056 "0b". This also affects int(x, 0).
1058 - Issue #2359: Adding deprecation warnings for array.{read,write}.
1060 - Issue #1779871: GNU gcc can now build Python on OS X because the
1061 flags -Wno-long-double, -no-cpp-precomp, and -mno-fused-madd are no
1064 - Add a warning when asserting a non-empty tuple which is always true.
1066 - Issue #2179: speed up with statement execution by storing the exit
1067 method on the stack instead of in a temporary variable (patch by
1070 - Issue #2238: Some syntax errors in *args and **kwargs expressions
1071 could give bogus error messages.
1073 - Issue #2143: Fix embedded readline() hang on SSL socket EOF.
1078 - Patch #2240: Implement signal.setitimer and signal.getitimer.
1083 - Issue #2315: logging.handlers: TimedRotatingFileHandler now accounts
1084 for daylight savings time in calculating the next rollover.
1086 - Issue #2316: logging.handlers: TimedRotatingFileHandler now
1087 calculates rollovers correctly even when nothing is logged for a
1090 - Issue #2317: logging.handlers: TimedRotatingFileHandler now uses
1091 improved logic for removing old files.
1093 - Issue #2495: tokenize.untokenize now inserts a space between two
1094 consecutive string literals; previously, ["" ""] was rendered as
1095 [""""], which is incorrect python code.
1097 - Issue #2248: return the result of the QUIT command. from
1100 - Backport of Python 3.0's io module.
1102 - Issue #2482: Make sure that the coefficient of a Decimal is always
1103 stored as a str instance, not as a unicode instance. This ensures
1104 that str(Decimal) is always an instance of str.
1106 - Issue #2478: fix failure of decimal.Decimal(0).sqrt()
1108 - Issue #2432: give DictReader the dialect and line_num attributes
1109 advertised in the docs.
1111 - Issue #2460: Make Ellipsis object copyable.
1113 - Issue #1681432: Add triangular distribution to the random module
1115 - Issue #2136: urllib2's auth handler now allows single-quoted realms
1116 in the WWW-Authenticate header.
1118 - Issue #2434: Enhanced platform.win32_ver() to also work on Python
1119 installation which do not have the win32all package installed.
1121 - Added support to platform.uname() to also report the machine and
1122 processor information on Windows XP and later. As a result,
1123 platform.machine() and platform.processor() will report this
1124 information as well.
1126 - The library implementing the 2to3 conversion, lib2to3, was added to
1127 the standard distribution.
1129 - Issue #1747858: Fix chown to work with large uid's and gid's on
1132 - Issue #1202: zlib.crc32 and zlib.adler32 no longer return different
1133 values on 32-bit vs. 64-bit python interpreters. Both were correct,
1134 but they now both return a signed integer object for consistency.
1136 - Issue #1158: add %f format (fractions of a second represented as
1137 microseconds) to datetime objects. Understood by both strptime and
1140 - Issue #705836: struct.pack(">f", x) now raises OverflowError on all
1141 platforms when x is too large to fit into an IEEE 754 float;
1142 previously it only raised OverflowError on non IEEE 754 platforms.
1144 - Issues #2166, #1741 and #1531505: now distutils deals with HOME
1145 correctly under win32
1147 - Patch #1858: distutils: added multiple server support in .pypirc
1149 - Issue #1106316: pdb.post_mortem()'s parameter, "traceback", is now
1150 optional: it defaults to the traceback of the exception that is
1151 currently being handled (is mandatory to be in the middle of an
1152 exception, otherwise it raises ValueError).
1154 - Issue #1193577: A .shutdown() method has been added to SocketServers
1155 which terminates the .serve_forever() loop.
1157 - Issue #2220: handle rlcompleter attribute match failure more
1160 - Issue #2225: py_compile, when executed as a script, now returns a
1161 non- zero status code if not all files could be compiled
1164 - Bug #1725737: In distutils' sdist, exclude RCS, CVS etc. also in the
1165 root directory, and also exclude .hg, .git, .bzr, and _darcs.
1167 - Issue #1872: The struct module typecode for _Bool has been changed
1170 - The bundled libffi copy is now in sync with the recently released
1171 libffi3.0.4 version, apart from some small changes to
1172 Modules/_ctypes/libffi/configure.ac. On OS X, preconfigured libffi
1173 files are used. On all linux systems the --with-system-ffi
1174 configure option defaults to "yes".
1176 - Issue #1577: shutil.move() now calls os.rename() if the destination
1177 is a directory instead of copying-then-remove-source.
1182 - test_nis no longer fails when test.test_support.verbose is true and
1183 NIS is not set up on the testing machine.
1185 - Output comparison tests are no longer supported.
1187 - Rewrite test_errno to use unittest and no longer be a no-op.
1189 - GHOP 234: Convert test_extcall to doctest.
1191 - GHOP 290: Convert test_dbm and test_dummy_threading to unittest.
1193 - GHOP 293: Convert test_strftime, test_getargs, and test_pep247 to
1196 - Issue #2055: Convert test_fcntl to unittest.
1198 - Issue 1960: Convert test_gdbm to unittest.
1200 - GHOP 294: Convert test_contains, test_crypt, and test_select to
1203 - GHOP 238: Convert test_tokenize to use doctest.
1205 - GHOP 237: Rewrite test_thread using unittest.
1207 - Patch #2232: os.tmpfile might fail on Windows if the user has no
1208 permission to create files in the root directory.
1213 - A new script 2to3 is now installed, to run the 2.x to 3.x converter.
1215 - Python/memmove.c and Python/strerror.c have been removed; both
1216 functions are in the C89 standard library.
1218 - Patch #2284: Add -x64 option to rt.bat.
1223 - Patch #2477: Added PyParser_ParseFileFlagsEx() and
1224 PyParser_ParseStringFlagsFilenameEx().
1227 What's New in Python 2.6 alpha 1?
1228 =================================
1230 *Release date: 29-Feb-2008*
1235 - Issue #2051: pyc and pyo files are no longer created with permission
1236 644. The mode is now inherited from the py file.
1238 - Issue #2067: file.__exit__() now calls subclasses' close() method.
1240 - Patch #1759: Backport of PEP 3129 class decorators.
1242 - Issue #1881: An internal parser limit has been increased. Also see
1243 issue 215555 for a discussion.
1245 - Added the future_builtins module, which contains hex() and oct().
1246 These are the PEP 3127 version of these functions, designed to be
1247 compatible with the hex() and oct() builtins from Python 3.0. They
1248 differ slightly in their output formats from the existing, unchanged
1249 Python 2.6 builtins. The expected usage of the future_builtins
1251 from future_builtins import hex, oct
1253 - Issue #1600: Modifed PyOS_ascii_formatd to use at most 2 digit
1254 exponents for exponents with absolute value < 100. Follows C99
1255 standard. This is a change on Windows, which would use 3 digits.
1256 Also, added 'n' to the formats that PyOS_ascii_formatd understands,
1257 so that any alterations it does to the resulting string will be
1258 available in stringlib/formatter.h (for float.__format__).
1260 - Implemented PEP 3101, Advanced String Formatting. This adds a new
1261 builtin format(); a format() method for str and unicode; a
1262 __format__() method to object, str, unicode, int, long, float, and
1263 datetime; the class string.Formatter; and the C API
1266 - Fixed several potential crashes, all caused by specially crafted
1267 __del__ methods exploiting objects in temporarily inconsistent
1270 - Issue #2115: Important speedup in setting __slot__ attributes. Also
1271 prevent a possible crash: an Abstract Base Class would try to access
1272 a slot on a registered virtual subclass.
1274 - Fixed repr() and str() of complex numbers with infinity or nan as
1275 real or imaginary part.
1277 - Clear all free lists during a gc.collect() of the highest generation
1278 in order to allow pymalloc to free more arenas. Python may give back
1279 memory to the OS earlier.
1281 - Issue #2045: Fix an infinite recursion triggered when printing a
1282 subclass of collections.defaultdict, if its default_factory is set
1285 - Fixed a minor memory leak in dictobject.c. The content of the free
1286 list was not freed on interpreter shutdown.
1288 - Limit free list of method and builtin function objects to 256
1291 - Patch #1953: Added ``sys._compact_freelists()`` and the C API
1292 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
1293 to compact the internal free lists of pre-allocted ints and floats.
1295 - Issue #1983: Fixed return type of fork(), fork1() and forkpty()
1296 calls. Python expected the return type int but the fork familie
1299 - Issue #1678380: Fix a bug that identifies 0j and -0j when they
1300 appear in the same code unit.
1302 - Issue #2025: Add tuple.count() and tuple.index() methods to comply
1303 with the collections.Sequence API.
1305 - Patch #1970 by Antoine Pitrou: Speedup unicode whitespace and
1308 - Added ``PyType_ClearCache()`` and ``sys._clear_type_cache`` to clear
1309 the internal lookup cache for ref leak tests.
1311 - Patch #1473257: generator objects gain a gi_code attribute. This is
1312 the same object as the func_code attribute of the function that
1313 produced the generator.
1315 - Issue #1920: "while 0" statements were completely removed by the
1316 compiler, even in the presence of an "else" clause, which is
1317 supposed to be run when the condition is false. Now the compiler
1318 correctly emits bytecode for the "else" suite.
1320 - A few crashers fixed: weakref_in_del.py (issue #1377858);
1321 loosing_dict_ref.py (issue #1303614, test67.py);
1322 borrowed_ref_[34].py (not in tracker).
1324 - Issue #1069410: The "can't load dll" message box on Windows is
1325 suppressed while an extension is loaded by calling SetErrorMode in
1326 dynload_win.c. The error is still reported properly.
1328 - Issue #1915: Python compiles with --enable-unicode=no again. However
1329 several extension methods and modules do not work without unicode
1332 - Issue #1882: when compiling code from a string, encoding cookies in the
1333 second line of code were not always recognized correctly.
1335 - Issue #1679: "0x" was taken as a valid integer literal.
1337 - Issue #1865: ``bytes`` as an alias for ``str`` and b"" as an alias "" were
1340 - sys.float_info / PyFloat_GetInfo: The floating point information
1341 object was converted from a dict to a specialized structseq object.
1343 - Patch #1816: Added sys.flags structseq. It exposes the status of
1344 most command line arguments and PYTHON* environment variables.
1346 - Objects/structseq.c: Implemented new structseq representation. The
1347 patch makes structseqs (e.g. the return value of os.stat) more
1350 - Patch #1700288: added a type attribute cache that caches method
1351 accesses, resulting in speedups in heavily object-oriented code.
1353 - Bug #1776: __import__() no longer accepts filenames on any platform.
1354 The first parameter to __import__() must be a valid module name.
1356 - Patch #1668: renamed THREADDEBUG envvar to PYTHONTHREADDEBUG.
1358 - Patch #602345: Add -B command line option, PYTHONDONTWRITEBYTECODE
1359 envvar and sys.dont_write_bytecode attribute. All these can be set
1360 to forbid Python to attempt to write compiled bytecode files.
1362 - Improve some exception messages when Windows fails to load an
1363 extension module. Now we get for example '%1 is not a valid Win32
1364 application' instead of 'error code 193'.
1366 - Bug #1481296: Fixed long(float('nan')) != 0L.
1368 - Issue #1640: Added math.isinf(x), math.isnan(x) and math.copysign(x,
1371 - Issue #1635: Platform independent creation and representation of NaN
1372 and INF. float("nan"), float("inf") and float("-inf") now work on
1373 every platform with IEEE 754 semantics.
1375 - Compiler now generates simpler and faster code for dictionary
1376 literals. The oparg for BUILD_MAP now indicates an estimated
1377 dictionary size. There is a new opcode, STORE_MAP, for adding
1378 entries to the dictionary.
1380 - Issue #1638: %zd configure test fails on Linux.
1382 - Issue #1620: New property decorator syntax was modifying the
1383 decorator in place instead of creating a new decorator object.
1385 - Issue #1538: Avoid copying string in split/rsplit if the split char
1388 - Issue #1553: An erroneous __length_hint__ can make list() raise a
1391 - PEP 366: Allow explicit relative imports when executing modules
1392 inside packages with the -m switch via a new module level
1393 __package__ attribute.
1395 - Issue #1402: Fix a crash on exit, when another thread is still
1396 running, and if the deallocation of its frames somehow calls the
1397 PyGILState_Ensure() / PyGILState_Release() functions.
1399 - Expose the Py_Py3kWarningFlag as sys.py3kwarning.
1401 - Issue #1445: Fix a SystemError when accessing the ``cell_contents``
1402 attribute of an empty cell object.
1404 - Issue #1460: The utf-7 incremental decoder did not accept truncated
1405 input. It now correctly saves its state between chunks of data.
1407 - Patch #1739468: Directories and zipfiles containing a __main__.py
1408 file can now be directly executed by passing their name to the
1409 interpreter. The directory/zipfile is automatically inserted as the
1410 first entry in sys.path.
1412 - Issue #1265: Fix a problem with sys.settrace, if the tracing
1413 function uses a generator expression when at the same time the
1414 executed code is closing a paused generator.
1416 - sets and frozensets now have an isdisjoint() method.
1418 - optimize the performance of builtin.sum().
1420 - Fix warnings found by the new version of the Coverity checker.
1422 - The enumerate() builtin function is no longer bounded to sequences
1423 smaller than LONG_MAX. Formerly, it raised an OverflowError. Now,
1424 automatically shifts from ints to longs.
1426 - Issue #1686386: Tuple's tp_repr did not take into account the
1427 possibility of having a self-referential tuple, which is possible
1428 from C code. Nor did object's tp_str consider that a type's tp_str
1429 could do something that could lead to an inifinite recursion.
1430 Py_ReprEnter() and Py_EnterRecursiveCall(), respectively, fixed the
1433 - Issue #1164: It was possible to trigger deadlock when using the
1434 'print' statement to write to a file since the GIL was not released
1435 as needed. Now PyObject_Print() does the right thing along with
1436 various tp_print implementations of the built-in types and those in
1437 the collections module.
1439 - Issue #1147: Exceptions were directly allowing string exceptions in
1440 their throw() method even though string exceptions no longer
1443 - Issue #1096: Prevent a segfault from getting the repr of a very
1444 deeply nested list by using the recursion counter.
1446 - Issue #1202533: Fix infinite recursion calls triggered by calls to
1447 PyObject_Call() never calling back out to Python code to trigger
1448 recursion depth updates/checks. Required the creation of a static
1449 RuntimeError instance in case normalizing an exception put the
1450 recursion check value past its limit. Fixes crashers
1451 infinite_rec_(1|2|4|5).py.
1453 - Patch #1031213: Decode source line in SyntaxErrors back to its
1454 original source encoding.
1456 - Patch #1673759: add a missing overflow check when formatting floats
1459 - Prevent expandtabs() on string and unicode objects from causing a
1460 segfault when a large width is passed on 32-bit platforms.
1462 - Issue #1733488: Fix compilation of bufferobject.c on AIX.
1464 - Issue #1722485: remove docstrings again when running with -OO.
1466 - Add new attribute names for function objects. All the func_* become
1467 __*__ attributes. (Some already existed, e.g., __doc__ and
1470 - Add -3 option to the interpreter to warn about features that are
1471 deprecated and will be changed/removed in Python 3.0.
1473 - Patch #1686487: you can now pass any mapping after '**' in function
1476 - except clauses may now be spelled either "except E, target:" or
1477 "except E as target:". This is to provide forwards compatibility
1480 - Deprecate BaseException.message as per PEP 352.
1482 - Issue #1303614: don't expose object's __dict__ when the dict is
1483 inherited from a builtin base.
1485 - When __slots__ are set to a unicode string, make it work the same as
1486 setting a plain string, ie don't expand to single letter identifiers.
1488 - Request #1191699: Slices can now be pickled.
1490 - Request #1193128: str.translate() now allows a None argument for
1491 translations that only remove characters without re-mapping the
1492 remaining characters.
1494 - Patch #1682205: a TypeError while unpacking an iterable is no longer
1495 masked by a generic one with the message "unpack non-sequence".
1497 - Remove unused file Python/fmod.c.
1499 - Bug #1683368: The object.__init__() and object.__new__() methods are
1500 now stricter in rejecting excess arguments. The only time when
1501 either allows excess arguments is when it is not overridden and the
1502 other one is. For backwards compatibility, when both are
1503 overridden, it is a deprecation warning (for now; maybe a Py3k
1504 warning later). Also, type.__init__() insists on the same signature
1505 as supported by type.__new__().
1507 - Patch #1675423: PyComplex_AsCComplex() now tries to convert an
1508 object to complex using its __complex__() method before falling back
1509 to the __float__() method. Therefore, the functions in the cmath
1510 module now can operate on objects that define a __complex__()
1513 - Patch #1623563: allow __class__ assignment for classes with
1514 __slots__. The old and the new class are still required to have the
1517 - Patch #1642547: Fix an error/crash when encountering syntax errors
1518 in complex if statements.
1520 - Patch #1462488: Python no longer segfaults when
1521 ``object.__reduce_ex__()`` is called with an object that is faking
1524 - Patch #1680015: Don't modify __slots__ tuple if it contains an
1527 - Patch #1444529: the builtin compile() now accepts keyword arguments.
1529 - Bug #1678647: write a newline after printing an exception in any
1530 case, even when converting the value to a string failed.
1532 - The dir() function has been extended to call the __dir__() method on
1533 its argument, if it exists. If not, it will work like before. This
1534 allows customizing the output of dir() in the presence of a
1537 - Patch #922167: Python no longer segfaults when faced with infinitely
1538 self-recursive reload() calls (as reported by bug #742342).
1540 - Patch #1675981: remove unreachable code from ``type.__new__()``
1543 - Patch #1491866: change the complex() constructor to allow
1544 parthensized forms. This means complex(repr(x)) now works instead of
1545 raising a ValueError.
1547 - Patch #703779: unset __file__ in __main__ after running a file. This
1548 makes the filenames the warning module prints much more sensible
1549 when a PYTHONSTARTUP file is used.
1551 - Variant of patch #697613: don't exit the interpreter on a SystemExit
1552 exception if the -i command line option or PYTHONINSPECT environment
1553 variable is given, but break into the interactive interpreter just
1554 like on other exceptions or normal program exit.
1556 - Patch #1638879: don't accept strings with embedded NUL bytes in
1559 - Bug #1674503: close the file opened by execfile() in an error
1562 - Patch #1674228: when assigning a slice (old-style), check for the
1563 sq_ass_slice instead of the sq_slice slot.
1565 - When printing an unraisable error, don't print exceptions. before
1566 the name. This duplicates the behavior whening normally printing
1569 - Bug #1653736: Properly discard third argument to
1570 slot_nb_inplace_power.
1572 - PEP 352: Raising a string exception now triggers a TypeError.
1573 Attempting to catch a string exception raises DeprecationWarning.
1575 - Bug #1377858: Fix the segfaulting of the interpreter when an object
1576 created a weakref on itself during a __del__ call for new-style
1577 classes (classic classes still have the bug).
1579 - Bug #1579370: Make PyTraceBack_Here use the current thread, not the
1580 frame's thread state.
1582 - patch #1630975: Fix crash when replacing sys.stdout in
1585 - Prevent seg fault on shutdown which could occur if an object raised
1588 - Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, to
1589 avoid relying on atexit.
1591 - Bug #1590891: random.randrange don't return correct value for big
1594 - Patch #1586791: Better exception messages for some operations on
1595 strings, tuples and lists.
1597 - Bug #1067760: Deprecate passing floats to file.seek.
1599 - Bug #1591996: Correctly forward exception in instance_contains().
1601 - Bug #1588287: fix invalid assertion for `1,2` in debug builds.
1603 - Bug #1576657: when setting a KeyError for a tuple key, make sure
1604 that the tuple isn't used as the "exception arguments tuple".
1606 - Bug #1565514: SystemError not raised on too many nested blocks.
1608 - Bug #1576174: WindowsError now displays the windows error code
1609 again, no longer the posix error code.
1611 - Patch #1549049: Support long values in structmember, issue warnings
1612 if the assigned value for structmember fields gets truncated.
1614 - Update the peephole optimizer to remove more dead code (jumps after
1615 returns) and inline unconditional jumps to returns.
1617 - Bug #1545497: when given an explicit base, int() did ignore NULs
1618 embedded in the string to convert.
1620 - Bug #1569998: break inside a try statement (outside a loop) is now
1621 recognized and rejected.
1623 - list.pop(x) accepts any object x following the __index__ protocol.
1625 - A number of places, including integer negation and absolute value,
1626 were fixed to not rely on undefined behaviour of the C compiler
1629 - Bug #1566800: make sure that EnvironmentError can be called with any
1630 number of arguments, as was the case in Python 2.4.
1632 - Patch #1567691: super() and new.instancemethod() now don't accept
1633 keyword arguments any more (previously they accepted them, but
1636 - Fix a bug in the parser's future statement handling that led to
1637 "with" not being recognized as a keyword after, e.g., this
1638 statement: from __future__ import division, with_statement
1640 - Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).
1642 - Fix %zd string formatting on Mac OS X so it prints negative numbers.
1644 - Allow exception instances to be directly sliced again.
1646 - Bug #1551432: Exceptions do not define an explicit __unicode__
1647 method. This allows calling unicode() on exceptions classes
1648 directly to succeed.
1650 - Bug #1542051: Exceptions now correctly call PyObject_GC_UnTrack.
1651 Also make sure that every exception class has __module__ set to
1654 - Bug #1550983: emit better error messages for erroneous relative
1655 imports (if not in package and if beyond toplevel package).
1657 - Overflow checking code in integer division ran afoul of new gcc
1658 optimizations. Changed to be more standard-conforming.
1660 - Patch #1542451: disallow continue anywhere under a finally.
1662 - Patch #1546288: fix seg fault in dict_equal due to ref counting bug.
1664 - The return tuple from str.rpartition(sep) is (tail, sep, head) where
1665 head is the original string if sep was not found.
1667 - Bug #1520864: unpacking singleton tuples in list comprehensions and
1668 generator expressions (x for x, in ... ) works again. Fixing this
1669 problem required changing the .pyc magic number. This means that
1670 .pyc files generated before 2.5c2 will be regenerated.
1672 - ``with`` and ``as`` are now keywords.
1674 - Bug #1664966: Fix crash in exec if Unicode filename can't be
1677 - Issue #1537: Changed GeneratorExit's base class from Exception to
1680 - Issue #1703448: A joined thread could show up in the
1681 threading.enumerate() list after the join() for a brief period until
1688 - Patch #2274: Add heapq.heappushpop().
1690 - Add inspect.isabstract(object) to fix bug #2223
1692 - Add a __format__ method to Decimal, to support PEP 3101.
1694 - Add a timing parameter when using trace.Trace to print out
1697 - Issue #1627: httplib now ignores negative Content-Length headers.
1699 - Issue #900744: If an invalid chunked-encoding header is sent by a
1700 server, httplib will now raise IncompleteRead and close the
1701 connection instead of raising ValueError.
1703 - Issue #1492: The content type of BaseHTTPServer error messages can
1706 - Issue #1781: ConfigParser now does not let you add the "default" section
1709 - Removed uses of dict.has_key() from distutils, and uses of
1710 callable() from copy_reg.py, so the interpreter now starts up
1711 without warnings when '-3' is given. More work like this needs to
1712 be done in the rest of the stdlib.
1714 - Issue #1916: added isgenerator() and isgeneratorfunction() to
1717 - Issue #1224: Fixed bad url parsing when path begins with double
1720 - ctypes instances that are not or do not contain pointers can now be
1723 - Patch #1966: Break infinite loop in httplib when the servers
1724 implements the chunked encoding incorrectly.
1726 - Rename rational.py to fractions.py and the rational.Rational class
1727 to fractions.Fraction, to avoid the name clash with the abstract
1728 base class numbers.Rational. See discussion in issue #1682.
1730 - The pickletools module now provides an optimize() function that
1731 eliminates unused PUT opcodes from a pickle string.
1733 - Patch #2021: Allow tempfile.NamedTemporaryFile and
1734 SpooledTemporaryFile to be used in with statements by correctly
1735 supporting the context management protocol.
1737 - Patch #1979: Add rich comparisons to Decimal, and make Decimal
1738 comparisons involving a NaN follow the IEEE 754 standard.
1740 - Issue #2004: tarfile.py: Use mode 0700 for temporary directories and
1741 default permissions for missing directories.
1743 - Issue #175006: The debugger used to skip the condition of a "while"
1744 statement after the first iteration. Now it correctly steps on the
1745 expression, and breakpoints on the "while" statement are honored on
1748 - Issue #1765140: add an optional delay argument to FileHandler and
1749 its subclasses. Defaults to false (existing behaviour), but if true,
1750 defers opening the file until the first call to emit().
1752 - The pprint module now supports sets and frozensets.
1754 - Issue #1221598: add optional callbacks to ftplib.FTP's storbinary()
1755 and storlines() methods. (Contributed by Phil Schwartz)
1757 - Issue #1715: include sub-extension modules in pydoc's text output.
1759 - Issue #1836: fix an off-by-one bug in TimedRotatingHandler's
1760 rollover time calculation.
1762 - Issue #1021: fix a bug to allow basicConfig to accept NOTSET as a
1765 - Issue #932563: add LoggerAdapter convenience class to make it easier
1766 to add contextual information in logging output.
1768 - Issue #1760556: fix a bug to avoid FileHandler throwing an exception
1771 - Bug #1530959: distutils' build command now uses different build
1772 directory when building extension modules against versions of Python
1773 compiled with ``--with-pydebug``.
1775 - Issue #1555501: move plistlib from plat-mac directory to general
1778 - Issue #1269: fix a bug in pstats.add_callers() and add a unit test
1781 - Issue #1669: don't allow shutil.rmtree() to be called on a symlink
1784 - Issue #1664522: in urllib, don't read non-existing directories in
1785 ftp mode, returning a 0-byte file -- raise an IOError instead.
1787 - Issue #856047: respect the ``no_proxy`` environment variable when
1788 using the ``http_proxy`` etc. environment variables in urllib.
1790 - Issue #1178141: add a getcode() method to the addinfourls that
1791 urllib.open() returns so that you can retrieve the HTTP status code.
1793 - Issue #1003: Fix zipfile decryption check, it would fail zip files
1794 with extended local headers.
1796 - Issue #1189216: Fix the zipfile module to work on archives with
1797 headers past the 2**31 byte boundary.
1799 - Issue #1336: fix a race condition in subprocess.Popen if the garbage
1800 collector kicked in at the wrong time that would cause the process
1801 to hang when the child wrote to stderr.
1803 - Issue #1146: fix how textwrap breaks a long word that would start in
1804 the last column of a line.
1806 - Issue #1693149: trace.py --ignore-module - accept multiple
1807 comma-separated modules to be given.
1809 - Issue #1822: MIMEMultipart.is_multipart() behaves correctly for a
1810 just-created (and empty) instance. Thanks Jonathan Share.
1812 - Issue #1861: Added an attribute to the sched module which returns an
1813 ordered list of upcoming events (displayed as named tuples).
1815 - Issue #1837: The queue module now also supports a LIFO queue and a
1818 - Patch #1048820: Add insert-mode editing to curses.textpad.Textbox
1819 (patch by Stefan Wehr). Also, fix an off-by-one bug in
1822 - Issue #1831: ctypes now raises a TypeError if conflicting positional
1823 and named arguments are passed to a Structure or Union initializer.
1824 When too many positional arguments are passed, also a TypeError is
1825 raised instead of a ValueError.
1827 - Convert the internal ctypes array type cache to a WeakValueDict so
1828 that array types do not live longer than needed.
1830 - Issue #1786: pdb should use its own stdin/stdout around an exec call
1831 and when creating a recursive instance.
1833 - Issue #1698398: ZipFile.printdir() crashed because the format string
1834 expected a tuple type of length six instead of time.struct_time
1837 - Issue #1780: The Decimal constructor now accepts arbitrary leading
1838 and trailing whitespace when constructing from a string.
1839 Context.create_decimal no longer accepts trailing newlines.
1841 - Decimal.as_tuple(), difflib.find_longest_match() and inspect
1842 functions that returned a tuple now return a named tuple.
1844 - Doctest now returns results as a named tuple for readability:
1845 (0, 7) --> TestResults(failed=0, attempted=7)
1847 - Issue #846388:q re.match is interruptible now, which is particularly
1848 good for long regular expression matches.
1850 - Patch #1137: allow setting buffer_size attribute on pyexpat Parser
1851 objects to set the character data buffer size.
1853 - Issue #1757: The hash of a Decimal instance is no longer affected by
1854 the current context.
1856 - Patch #467924: add ZipFile.extract() and ZipFile.extractall() in the
1859 - Issue #1646: Make socket support the TIPC protocol.
1861 - Bug #1742: return os.curdir from os.path.relpath() if both arguments
1862 are equal instead of raising an exception.
1864 - Patch #1637: fix urlparse for URLs like 'http://x.com?arg=/foo'.
1866 - Patch #1698: allow '@' in username parsed by urlparse.py.
1868 - Issue #1735: TarFile.extractall() now correctly sets directory
1869 permissions and times.
1871 - Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a mountpoint.
1873 - Bug #1687: Fxed plistlib.py restricts <integer> to Python int when
1876 - Issue #1700: Regular expression inline flags incorrectly handle
1877 certain unicode characters.
1879 - Issue #1689: PEP 3141, numeric abstract base classes.
1881 - Tk issue #1851526: Return results from Python callbacks to Tcl as
1884 - Issue #1642: Fix segfault in ctypes when trying to delete attributes.
1886 - Issue #1727780: Support loading pickles of random.Random objects
1887 created on 32-bit systems on 64-bit systems, and vice versa. As a
1888 consequence of the change, Random pickles created by Python 2.6
1889 cannot be loaded in Python 2.5.
1891 - Issue #1455: The distutils package now supports VS 2005 and VS 2008
1892 for both the msvccompiler and cygwincompiler.
1894 - Issue #1531: tarfile.py: Read fileobj from the current offset, do
1895 not seek to the start.
1897 - Issue #1534: Added a dictionary sys.float_info with information
1898 about the internal floating point type to the sys module.
1900 - Issue #1429818: patch for trace and doctest modules so they play
1903 - doctest made a bad assumption that a package's __loader__.get_data()
1904 method used universal newlines.
1906 - Issue #1705170: contextlib.contextmanager was still swallowing
1907 StopIteration in some cases. This should no longer happen.
1909 - Issue #1292: On alpha, arm, ppc, and s390 linux systems the
1910 --with-system-ffi configure option defaults to "yes".
1912 - IN module for FreeBSD 8 is added and preexisting FreeBSD 6 and 7
1915 - Issues #1181, #1287: unsetenv() is now called when the
1916 os.environ.pop() and os.environ.clear() methods are used.
1918 - ctypes will now work correctly on 32-bit systems when Python is
1919 configured with --with-system-ffi.
1921 - Patch #1203: ctypes now does work on OS X when Python is built with
1922 --disable-toolbox-glue.
1924 - collections.deque() now supports a "maxlen" argument.
1926 - itertools.count() is no longer bounded to LONG_MAX. Formerly, it
1927 raised an OverflowError. Now, automatically shifts from ints to
1930 - Added itertools.product() which forms the Cartesian product of the
1933 - Added itertools.combinations() and itertools.permutations().
1935 - Patch #1541463: optimize performance of cgi.FieldStorage operations.
1937 - Decimal is fully updated to the latest Decimal Specification
1940 - Bug #1153: repr.repr() now doesn't require set and dictionary items
1941 to be orderable to properly represent them.
1943 - A 'c_longdouble' type was added to the ctypes module.
1945 - Bug #1709599: Run test_1565150 only if the file system is NTFS.
1947 - When encountering a password-protected robots.txt file the
1948 RobotFileParser no longer prompts interactively for a username and
1949 password (bug 813986).
1951 - TarFile.__init__() no longer fails if no name argument is passed and
1952 the fileobj argument has no usable name attribute (e.g. StringIO).
1954 - The functools module now provides 'reduce', for forward
1955 compatibility with Python 3000.
1957 - Server-side SSL support and cert verification added, by Bill
1960 - socket.ssl deprecated; use new ssl module instead.
1962 - uuid creation is now threadsafe.
1964 - EUC-KR codec now handles the cheot-ga-keut composed make-up hangul
1967 - GB18030 codec now can encode additional two-byte characters that are
1970 - Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
1972 - Bug #1704793: Return UTF-16 pair if unicodedata.lookup cannot
1973 represent the result in a single character.
1975 - Bug #978833: Close https sockets by releasing the _ssl object.
1977 - Change location of the package index to pypi.python.org/pypi
1979 - Bug #1701409: Fix a segfault in printing ctypes.c_char_p and
1980 ctypes.c_wchar_p when they point to an invalid location. As a
1981 sideeffect the representation of these instances has changed.
1983 - tarfile.py: Added "exclude" keyword argument to TarFile.add().
1985 - Bug #1734723: Fix repr.Repr() so it doesn't ignore the maxtuple
1988 - The urlopen function of urllib2 now has an optional timeout
1989 parameter (note that it actually works with HTTP, HTTPS, FTP and
1992 - In ftplib, the FTP.ntransfercmd method, when in passive mode, now
1993 uses the socket.create_connection function, using the timeout
1994 specified at connection time.
1996 - Bug #1728403: Fix a bug that CJKCodecs StreamReader hangs when it
1997 reads a file that ends with incomplete sequence and sizehint
1998 argument for .read() is specified.
2000 - Bug #1730389: Change time.strptime() to use ``\s+`` instead of
2001 ``\s*`` when matching spaces in the specified format argument.
2003 - Bugs #1668596/#1720897: distutils now copies data files even if
2004 package_dir is empty.
2006 - sha now raises a DeprecationWarning upon import.
2008 - md5 now raises a DeprecationWarning upon import.
2010 - Issue #1385: The hmac module now computes the correct hmac when
2011 using hashes with a block size other than 64 bytes (such as sha384
2014 - mimify now raises a DeprecationWarning upon import.
2016 - MimeWriter now raises a DeprecationWarning upon import.
2018 - tarfile.py: Improved unicode support. Unicode input names are now
2019 officially supported. Added "errors" argument to the TarFile class.
2021 - urllib.ftpwrapper class now accepts an optional timeout.
2023 - shlex.split() now has an optional "posix" parameter.
2025 - The posixfile module now raises a DeprecationWarning.
2027 - Remove the gopherlib module. This also leads to the removal of
2028 gopher support in urllib/urllib2.
2030 - Fix bug in marshal where bad data would cause a segfault due to lack
2031 of an infinite recursion check.
2033 - Removed plat-freebsd2 and plat-freebsd3 directories (and IN.py in
2036 - HTML-escape the plain traceback in cgitb's HTML output, to prevent
2037 the traceback inadvertently or maliciously closing the comment and
2038 injecting HTML into the error page.
2040 - The popen2 module and os.popen* are deprecated. Use the subprocess
2043 - Added an optional credentials argument to SMTPHandler, for use with
2044 SMTP servers which require authentication.
2046 - Patch #1695948: Added optional timeout parameter to SocketHandler.
2048 - Bug #1652788: Minor fix for currentframe.
2050 - Patch #1598415: Added WatchedFileHandler to better support external
2051 log file rotation using e.g. newsyslog or logrotate. This handler is
2052 only useful in Unix/Linux environments.
2054 - Bug #1706381: Specifying the SWIG option "-c++" in the setup.py file
2055 (as opposed to the command line) will now write file names ending in
2058 - As specified in RFC 2616, an HTTP response like 2xx indicates that
2059 the client's request was successfully received, understood, and
2060 accepted. Now in these cases no error is raised in urllib (issue
2063 - Bug #1290505: time.strptime's internal cache of locale information
2064 is now properly recreated when the locale is changed.
2066 - Patch #1685563: remove (don't add) duplicate paths in
2067 distutils.MSVCCompiler.
2069 - Added a timeout parameter to the constructor of other protocols
2070 (telnetlib, ftplib, smtplib and poplib). This is second part of the
2071 work started with create_connection() and timeout in httplib, and
2072 closes patch #723312.
2074 - Patch #1676823: Added create_connection() to socket.py, which may be
2075 called with a timeout, and use it from httplib (whose HTTPConnection
2076 and HTTPSConnection now accept an optional timeout).
2078 - Bug #978833: Revert r50844, as it broke _socketobject.dup.
2080 - Bug #1675967: re patterns pickled with Python 2.4 and earlier can
2081 now be unpickled with Python 2.5 and newer.
2083 - Patch #1630118: add a SpooledTemporaryFile class to tempfile.py.
2085 - Patch #1273829: os.walk() now has a "followlinks" parameter. If set
2086 to True (which is not the default), it visits symlinks pointing to
2089 - Bug #1681228: the webbrowser module now correctly uses the default
2090 GNOME or KDE browser, depending on whether there is a session of one
2091 of those present. Also, it tries the Windows default browser before
2092 trying Mozilla variants.
2094 - Patch #1339796: add a relpath() function to os.path.
2096 - Patch #1681153: the wave module now closes a file object it opened if
2097 initialization failed.
2099 - Bug #767111: fix long-standing bug in urllib which caused an
2100 AttributeError instead of an IOError when the server's response
2101 didn't contain a valid HTTP status line.
2103 - Patch #957650: "%var%" environment variable references are now
2104 properly expanded in ntpath.expandvars(), also "~user" home
2105 directory references are recognized and handled on Windows.
2107 - Patch #1429539: pdb now correctly initializes the __main__ module
2108 for the debugged script, which means that imports from __main__ work
2111 - The nonobvious commands.getstatus() function is now deprecated.
2113 - Patch #1393667: pdb now has a "run" command which restarts the
2114 debugged Python program, optionally with different arguments.
2116 - Patch #1649190: Adding support for _Bool to ctypes as c_bool.
2118 - Patch #1530482: add pydoc.render_doc() which returns the
2119 documentation for a thing instead of paging it to stdout, which
2122 - Patch #1533909: the timeit module now accepts callables in addition
2123 to strings for the code to time and the setup code. Also added two
2124 convenience functions for instantiating a Timer and calling its
2127 - Patch #1537850: tempfile.NamedTemporaryFile now has a "delete"
2128 parameter which can be set to False to prevent the default
2129 delete-on-close behavior.
2131 - Patch #1581073: add a flag to textwrap that prevents the dropping of
2132 whitespace while wrapping.
2134 - Patch #1603688: ConfigParser.SafeConfigParser now checks values that
2135 are set for invalid interpolation sequences that would lead to
2136 errors on reading back those values.
2138 - Added support for the POSIX.1-2001 (pax) format to
2139 tarfile.py. Extended and cleaned up the test suite. Added a new
2142 - Patch #1449244: Support Unicode strings in
2143 email.message.Message.{set_charset,get_content_charset}.
2145 - Patch #1542681: add entries for "with", "as" and "CONTEXTMANAGERS"
2146 to pydoc's help keywords.
2148 - Patch #1555098: use str.join() instead of repeated string
2149 concatenation in robotparser.
2151 - Patch #1635454: the csv.DictWriter class now includes the offending
2152 field names in its exception message if you try to write a record
2153 with a dictionary containing fields not in the CSV field names list.
2155 - Patch #1668100: urllib2 now correctly raises URLError instead of
2156 OSError if accessing a local file via the file:// protocol fails.
2158 - Patch #1677862: Require a space or tab after import in .pth files.
2160 - Patch #1192590: Fix pdb's "ignore" and "condition" commands so they
2161 trap the IndexError caused by passing in an invalid breakpoint
2164 - Patch #1599845: Add an option to disable the implicit calls to
2165 server_bind() and server_activate() in the constructors for
2166 TCPServer, SimpleXMLRPCServer and DocXMLRPCServer.
2168 - Bug #1531963: Make SocketServer.TCPServer's server_address always be
2169 equal to calling getsockname() on the server's socket. Fixed by
2172 - Patch #742598: Add .timeout attribute to SocketServer that calls
2173 .handle_timeout() when no requests are received.
2175 - Bug #1651235: When a tuple was passed to a ctypes function call,
2176 Python would crash instead of raising an error.
2178 - Bug #1646630: ctypes.string_at(buf, 0) and ctypes.wstring_at(buf, 0)
2179 returned string up to the first NUL character.
2181 - Patch #957003: Implement smtplib.LMTP.
2183 - Patch #1481079: add support for HTTP_REFERER to CGIHTTPServer.
2185 - Patch #1675424: Added tests for uncovered code in the zipfile
2186 module. The KeyError raised by Zipfile.getinfo for nonexistent
2187 names now has a descriptive message.
2189 - Bug #1115886: os.path.splitext('.cshrc') gives now ('.cshrc', '').
2191 - unittest now verifies more of its assumptions. In particular,
2192 TestCase and TestSuite subclasses (not instances) are no longer
2193 accepted in TestSuite.addTest(). This should cause no
2194 incompatibility since it never made sense with ordinary subclasses
2195 -- the failure just occurred later, with a more cumbersome
2198 - Patch #787789: allow to pass custom TestRunner instances to
2199 unittest's main() function.
2201 - Patches #1550273, #1550272: fix a few bugs in unittest and add a
2202 comprehensive test suite for the module.
2204 - Patch #1001604: glob.glob() now returns unicode filenames if it was
2205 given a unicode argument and os.listdir() returns unicode filenames.
2207 - Patch #1673619: setup.py identifies extension modules it doesn't
2208 know how to build and those it knows how to build but that fail to
2211 - Patch #912410: Replace HTML entity references for attribute values
2214 - Patch #1663234: you can now run doctest on test files and modules
2215 using "python -m doctest [-v] filename ...".
2217 - Patch #1121142: Implement ZipFile.open.
2219 - Taught setup.py how to locate Berkeley DB on Macs using MacPorts.
2221 - Added heapq.merge() for merging sorted input streams.
2223 - Added collections.namedtuple() for assigning field names to tuples.
2225 - Added itertools.izip_longest().
2227 - Have the encoding package's search function dynamically import using
2228 absolute import semantics.
2230 - Patch #1647484: Renamed GzipFile's filename attribute to name.
2232 - Patch #1517891: Mode 'a' for ZipFile now creates the file if it
2235 - Patch #698833: Support file decryption in zipfile.
2237 - Patch #685268: Consider a package's __path__ in imputil.
2239 - Patch #1463026: Support default namespace in XMLGenerator.
2241 - Patch #1571379: Make trace's --ignore-dir facility work in the face
2242 of relative directory names.
2244 - Bug #1600860: Search for shared python library in LIBDIR, not
2245 lib/python/config, on "linux" and "gnu" systems.
2247 - Patch #1652681: tarfile.py: create nonexistent files in append mode
2248 and allow appending to empty files.
2250 - Bug #1124861: Automatically create pipes if GetStdHandle fails in
2253 - Patch #1634778: add missing encoding aliases for iso8859_15 and
2256 - Patch #1638243: the compiler package is now able to correctly
2257 compile a with statement; previously, executing code containing a
2258 with statement compiled by the compiler package crashed the
2261 - Bug #1643943: Fix time.strptime's support for the %U directive.
2263 - Patch #1507247: tarfile.py: use current umask for intermediate
2266 - Patch #1627441: close sockets properly in urllib2.
2268 - Bug #494589: make ntpath.expandvars behave according to its
2271 - Changed platform module API python_version_tuple() to actually
2272 return a tuple (it used to return a list).
2274 - Added new platform module APIs python_branch(), python_revision(),
2275 python_implementation() and linux_distribution().
2277 - Added support for IronPython and Jython to the platform module.
2279 - The sets module has been deprecated. Use the built-in set/frozenset
2282 - Bug #1610795: make ctypes.util.find_library work on BSD systems.
2284 - Fixes for 64-bit Windows: In ctypes.wintypes, correct the
2285 definitions of HANDLE, WPARAM, LPARAM data types. Make
2286 parameterless foreign function calls work.
2288 - The version number of the ctypes package changed to "1.1.0".
2290 - Bug #1627575: logging: Added _open() method to FileHandler which can
2291 be used to reopen files. The FileHandler instance now saves the
2292 encoding (which can be None) in an attribute called "encoding".
2294 - Bug #411881: logging.handlers: bare except clause removed from
2295 SMTPHandler.emit. Now, only ImportError is trapped.
2297 - Bug #411881: logging.handlers: bare except clause removed from
2298 SocketHandler.createSocket. Now, only socket.error is trapped.
2300 - Bug #411881: logging: bare except clause removed from
2301 LogRecord.__init__. Now, only ValueError, TypeError and
2302 AttributeError are trapped.
2304 - Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj
2307 - Patch #1182394 from Shane Holloway: speed up HMAC.hexdigest.
2309 - Patch #1262036: Prevent TarFiles from being added to themselves
2310 under certain conditions.
2312 - Patch #1230446: tarfile.py: fix ExFileObject so that read() and
2313 tell() work correctly together with readline().
2315 - Patch #1484695: The tarfile module now raises a HeaderError
2316 exception if a buffer given to frombuf() is invalid.
2318 - Bug #1503765: Fix a problem in logging.config with spaces in comma-
2319 separated lists read from logging config files.
2321 - Patch #1604907: Fix problems in logging.handlers caused at logging
2322 shutdown when syslog handlers fail to initialize because of syslogd
2325 - Patch #1608267: fix a race condition in os.makedirs() if the
2326 directory to be created is already there.
2328 - Patch #1610437: fix a tarfile bug with long filename headers.
2330 - Patch #1371075: Make ConfigParser accept optional dict type for
2331 ordering, sorting, etc.
2333 - Bug #1563807: _ctypes built on AIX fails with ld ffi error.
2335 - Bug #1598620: A ctypes Structure cannot contain itself.
2337 - Patch #1070046: Marshal new-style objects like InstanceType in
2340 - cStringIO.truncate(-1) now raises an IOError, like StringIO and
2343 - Patch #1472877: Fix Tix subwidget name resolution.
2345 - Patch #1594554: Always close a tkSimpleDialog on ok(), even if an
2348 - Patch #1538878: Don't make tkSimpleDialog dialogs transient if the
2349 parent window is withdrawn.
2351 - Bug #1597824: return the registered function from atexit.register()
2352 to facilitate usage as a decorator.
2354 - Patch #1360200: Use unmangled_version RPM spec field to deal with
2357 - Patch #1359217: Process 2xx response in an ftplib transfer that
2358 precedes an 1xx response.
2360 - Patch #1355023: support whence argument for GzipFile.seek.
2362 - Patch #1065257: Support passing open files as body in
2363 HTTPConnection.request().
2365 - Bug #1569790: mailbox.py: Maildir.get_folder() and MH.get_folder()
2366 weren't passing the message factory on to newly created Maildir/MH
2369 - Patch #1514543: mailbox.py: In the Maildir class, report errors if
2370 there's a filename clash instead of possibly losing a message.
2371 (Patch by David Watson.)
2373 - Patch #1514544: Try to ensure that messages/indexes have been
2374 physically written to disk after calling .flush() or
2375 .close(). (Patch by David Watson.)
2377 - Patch #1592250: Add elide argument to Tkinter.Text.search.
2379 - Patch #838546: Make terminal become controlling in pty.fork().
2381 - Patch #1351744: Add askyesnocancel helper for tkMessageBox.
2383 - Patch #1060577: Extract list of RPM files from spec file in
2386 - Bug #1586613: fix zlib and bz2 codecs' incremental en/decoders.
2388 - Patch #1583880: fix tarfile's problems with long names and posix/
2391 - Bug #1586448: the compiler module now emits the same bytecode for
2392 list comprehensions as the builtin compiler, using the LIST_APPEND
2395 - Fix codecs.EncodedFile which did not use file_encoding in 2.5.0, and
2396 fix all codecs file wrappers to work correctly with the "with"
2397 statement (bug #1586513).
2399 - Lib/modulefinder.py now handles absolute and relative imports
2402 - Patch #1567274: Support SMTP over TLS.
2404 - Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that ctypes
2405 isn't considered as requiring executable stacks.
2407 - ctypes callback functions only support 'fundamental' data types as
2408 result type. Raise an error when something else is used. This is a
2409 partial fix for Bug #1574584.
2411 - Fix turtle so that time.sleep is imported for the entire library.
2412 Allows the demo2 function to be executed on its own instead of only
2413 when the module is run as a script.
2415 - Bug #813342: Start the IDLE subprocess with -Qnew if the parent is
2416 started with that option.
2418 - Bug #1565150: Fix subsecond processing for os.utime on Windows.
2420 - Support for MSVC 8 was added to bdist_wininst.
2422 - Bug #1446043: correctly raise a LookupError if an encoding name
2423 given to encodings.search_function() contains a dot.
2425 - Bug #1560617: in pyclbr, return full module name not only for
2426 classes, but also for functions.
2428 - Bug #1457823: cgi.(Sv)FormContentDict's constructor now takes
2429 keep_blank_values and strict_parsing keyword arguments.
2431 - Bug #1566602: correct failure of posixpath unittest when $HOME ends
2434 - Bug #1565661: in webbrowser, split() the command for the default
2435 GNOME browser in case it is a command with args.
2437 - Made the error message for time.strptime when the data data and
2438 format do match be more clear.
2440 - Fix a bug in traceback.format_exception_only() that led to an error
2441 being raised when print_exc() was called without an exception set.
2442 In version 2.4, this printed "None", restored that behavior.
2444 - Make webbrowser.BackgroundBrowser usable in Windows (it wasn't
2445 because the close_fds arg to subprocess.Popen is not supported).
2447 - Reverted patch #1504333 to sgmllib because it introduced an infinite
2450 - Patch #1553314: Fix the inspect.py slowdown that was hurting IPython
2451 & SAGE by adding smarter caching in inspect.getmodule()
2453 - Fix missing import of the types module in logging.config.
2455 - Patch #1550886: Fix decimal module context management implementation
2456 to match the localcontext() example from PEP 343.
2458 - Bug #1545341: The 'classifier' keyword argument to the Distutils
2459 setup() function now accepts tuples as well as lists.
2461 - Bug #1541863: uuid.uuid1 failed to generate unique identifiers on
2462 systems with low clock resolution.
2464 - Bug #1531862: Do not close standard file descriptors in subprocess.
2466 - idle: Honor the "Cancel" action in the save dialog (Debian bug
2469 - Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
2470 the first chunk fed to the decoder started with a BOM, but was
2471 longer than 3 bytes.
2473 - The implementation of UnicodeError objects has been simplified
2474 (start and end attributes are now stored directly as Py_ssize_t
2477 - Issue #829951: In the smtplib module, SMTP.starttls() now complies
2478 with RFC 3207 and forgets any knowledge obtained from the server not
2479 obtained from the TLS negotiation itself. Patch contributed by Bill
2482 - Issue #1339: The smtplib.SMTP class has been refactored a bit such
2483 that the SMTP.starttls() caller no longer needs to call ehlo()
2484 beforehand. SMTP.starttls() now raises an exception of the server
2485 does not claim to support starttls. Adds the
2486 SMTP.ehlo_or_helo_if_needed() method. Patch contributed by Bill
2489 - Patch #1089358: Add signal.siginterrupt, a wrapper around
2495 - Patch #1657: added select.epoll and select.kqueue.
2497 - Patch #1506171: added operator.methodcaller().
2499 - Patch #1826: operator.attrgetter() now supports dotted attribute paths.
2501 - Patch #1957: syslogmodule: Release GIL when calling syslog(3).
2503 - Bug #2112: mmap.error is now a subclass of EnvironmentError and not
2504 a direct EnvironmentError.
2506 - Bug #2111: mmap segfaults when trying to write a block opened with
2509 - Bug #2063: correct order of utime and stime in os.times() result on
2512 - Patch #1736: Fix file name handling of _msi.FCICreate.
2514 - Updated ``big5hkscs`` codec to the HKSCS revision of 2004.
2516 - Issue #1940: make it possible to use curses.filter() before
2517 curses.initscr() as the documentation says.
2519 - Backport of _fileio module from Python 3.0.
2521 - Patch #1087741: mmap.mmap is now a class, not a factory function. It
2522 is also subclassable now.
2524 - Patch #1648: added ``sys.getprofile()`` and ``sys.gettrace()``.
2526 - Patch #1663329: added ``os.closerange()`` function to quickly close
2527 a range of file descriptors without considering errors.
2529 - Patch #976880: ``mmap`` objects now have an ``rfind`` method that
2530 works as expected. ``mmap.find`` also takes an optional ``end``
2533 - _winreg's HKEY object has gained __enter__ and __exit__ methods to
2534 support the context manager protocol. The _winreg module also
2535 gained a new function ``ExpandEnvironmentStrings`` to expand
2538 - itertools.starmap() now accepts any iterable input. Previously, it
2539 required the function inputs to be tuples.
2541 - itertools.chain() now has an alternate constructor,
2542 chain.from_iterable().
2544 - Issue #1646: Make socket support TIPC. The socket module now has
2545 support for TIPC under Linux, see http://tipc.sf.net/ for more
2548 - Added interface for Windows' WSAIoctl to socket object and added an
2549 example for a simple network sniffer.
2551 - Bug #1301: Bad assert in _tkinter fixed.
2553 - Added bdist_wininst executable for VS 2008.
2555 - Bug #1604: collections.deque.__init__(iterable) now clears any prior
2556 contents before adding elements from the iterable. This fix brings
2557 the behavior into line with that for list.__init__().
2559 - Added wide char functions to msvcrt module: getwch, getwche, putwch
2560 and ungetwch. The functions accept or return unicode.
2562 - os.access now returns True on Windows for any existing directory.
2564 - Added warnpy3k function to the warnings module.
2566 - Marshal.dumps() now expects exact type matches for int, long, float,
2567 complex, tuple, list, dict, set, and frozenset. Formerly, it would
2568 silently miscode subclasses of those types. Now, it raises a
2571 - Patch #1388440: Add set_completion_display_matches_hook and
2572 get_completion_type to readline.
2574 - Bug #1649098: Avoid declaration of zero-sized array declaration in
2577 - Removed the rgbimg module; been deprecated since Python 2.5.
2579 - Bug #1721309: prevent bsddb module from freeing random memory.
2581 - Bug #1233: fix bsddb.dbshelve.DBShelf append method to work as
2582 intended for RECNO databases.
2584 - pybsddb.sf.net Bug #477182: Load the database flags at database open
2585 time so that opening a database previously created with the DB_DUP
2586 or DB_DUPSORT flag set will keep the proper behavior on subsequent
2587 opens. Specifically: dictionary assignment to a DB object will
2588 replace all values for a given key when the database allows
2589 duplicate values. DB users should use DB.put(k, v) when they want
2590 to store duplicates; not DB[k] = v.
2592 - Add the bsddb.db.DBEnv.lock_id_free method.
2594 - Bug #1686475: Support stat'ing open files on Windows again.
2596 - Patch #1185447: binascii.b2a_qp() now correctly quotes binary
2597 characters with ASCII value less than 32. Also, it correctly quotes
2598 dots only if they occur on a single line, as opposed to the previous
2599 behavior of quoting dots if they are the second character of any
2602 - Bug #1622896: fix a rare corner case where the bz2 module raised an
2603 error in spite of a succesful compression.
2605 - Patch #1654417: make operator.{get,set,del}slice use the full range
2608 - Patch #1646728: datetime.fromtimestamp fails with negative
2609 fractional times. With unittest.
2611 - Patch #1490190: posixmodule now includes os.chflags() and
2612 os.lchflags() functions on platforms where the underlying system
2613 calls are available.
2615 - Patch #1494140: Add documentation for the new struct.Struct object.
2617 - Patch #1432399: Support the HCI protocol for bluetooth sockets
2619 - Patch #1657276: Make NETLINK_DNRTMSG conditional.
2621 - Bug #1653736: Complain about keyword arguments to time.isoformat.
2623 - Bug #1486663: don't reject keyword arguments for subclasses of
2626 - Patch #1610575: The struct module now supports the 't' code, for C99
2629 - Patch #1635058: ensure that htonl and friends never accept or return
2630 negative numbers, per the underlying C implementation.
2632 - Patch #1544279: Improve thread-safety of the socket module by moving
2633 the sock_addr_t storage out of the socket object.
2635 - Patch #1019808: fix bug that causes an incorrect error to be
2636 returned when a socket timeout is set and a connection attempt
2639 - Speed up function calls into the math module.
2641 - Bug #1588217: don't parse "= " as a soft line break in binascii's
2642 a2b_qp() function, instead leave it in the string as quopri.decode()
2645 - Bug #1599782: Fix segfault on bsddb.db.DB().type().
2647 - Bug #1567666: Emulate GetFileAttributesExA for Win95.
2649 - Patch #1576166: Support os.utime for directories on Windows NT+.
2651 - Patch #1572724: fix typo ('=' instead of '==') in _msi.c.
2653 - Bug #1572832: fix a bug in ISO-2022 codecs which may cause segfault
2654 when encoding non-BMP unicode characters.
2656 - Bug #1556784: allow format strings longer than 127 characters in
2657 datetime's strftime function.
2659 - Fix itertools.count(n) to work with negative numbers again.
2661 - RLIMIT_SBSIZE was added to the resource module where available.
2663 - Bug #1551427: fix a wrong NULL pointer check in the win32 version of
2666 - Bug #1548092: fix curses.tparm seg fault on invalid input.
2668 - Patch #1114: fix curses module compilation on 64-bit AIX, & possibly
2669 other 64-bit LP64 platforms where attr_t is not the same size as a
2670 long. (Contributed by Luke Mewburn.)
2672 - Bug #1550714: fix SystemError from itertools.tee on negative value
2675 - Fixed a few bugs on cjkcodecs:
2676 - gbk and gb18030 codec now handle U+30FB KATAKANA MIDDLE DOT
2678 - iso2022_jp_2 codec now encodes into G0 for KS X 1001, GB2312
2679 codepoints to conform the standard.
2680 - iso2022_jp_3 and iso2022_jp_2004 codec can encode JIS X 0213:2
2683 - Bug #1552726: in readline.c, avoid repeatedly polling in interactive
2684 mode by only placing a timeout on the select() if an input hook has
2685 been defined. This prevents an interactive Python from waking up 10
2686 times per second. Patch by Richard Boulton.
2688 - fixed a bug with bsddb.DB.stat: the flags and txn keyword arguments
2691 - Added support for linking the bsddb module against BerkeleyDB 4.5.x,
2694 - Bug #1633621: if curses.resizeterm() or curses.resize_term() is
2695 called, update _curses.LINES, _curses.COLS, curses.LINES and
2698 - Fix an off-by-one bug in locale.strxfrm().
2700 - Fix libffi configure for hppa*-*-linux* | parisc*-*-linux*.
2702 - Build using system ffi library on arm*-linux*.
2704 - Bug #1372: zlibmodule.c: int overflow in PyZlib_decompress
2706 - bsddb module: Fix memory leak when using database cursors on
2707 databases without a DBEnv.
2709 - The sqlite3 module was updated to pysqlite 2.4.1.
2714 - Refactor test_logging to use unittest.
2716 - Refactor test_profile and test_cprofile to use the same code to
2719 - Make test_runpy reentrant by fixing _check_module to clear out any
2720 module being tested. Was causing an error by __import__ doing a
2721 reload on the second run and thus suppressing bytecode recreation.
2723 - Capture socket connection resets and timeouts in test_socket_ssl and
2724 test_urllib2net and raise test.test_support.ResourceDenied.
2726 - Patch #1559413: Fix test_cmd_line if sys.executable contains a
2729 - Added test.test_support.TransientResource which is a context manager
2730 to surround calls to resources that are not guaranteed to work even
2731 if test.test_support.requires says that the resource should exist.
2733 - Added a test for slicing of an exception.
2735 - Added test.test_support.EnvironmentVarGuard. It's a class that
2736 provides a context manager so that one can temporarily set or unset
2737 environment variables.
2739 - Added some tests for modulefinder.
2741 - Converted test_imp to use unittest.
2743 - Fix bsddb test_basics.test06_Transactions to check the version
2746 - test.test_support.catch_warning is a new context manager that can be
2747 used to catch the warnings issued by the warning framework.
2752 - Tools/scripts/reindent.py now creates the backup file using
2753 shutil.copy to preserve user/group and permissions. Added also a
2754 --nobackup option to not create the backup if the user is concerned
2755 regarding this. Check issue 1050828 for more details.
2757 - Tools/scripts/win_add2path.py was added. The simple script modifes
2758 the PATH environment var of the HKCU tree and adds the python bin
2759 and script directory.
2761 - Tools/18n/pygettext.py was added to the list of scripts installed by
2762 Tools/scripts/setup.py (tracker item 642309).
2764 - Added IronPython and Jython support to pybench (part of which was
2767 - Made some minor changes to pybench output to allow the user to see
2768 which Python version is running pybench.
2770 - Added support for the new platform module feature
2771 platform.python_implementation(); this will now be saved in the
2778 - RFE #1765140: Updated documentation on FileHandler and subclasses to
2779 include new optional delay argument.
2781 - Bug #932563: Added section on getting contextual information into
2782 logging output, and added documentation for the new LoggerAdapter
2785 - Bug #1295: Added information about caching of formatted exception
2786 information in the LogRecord by Formatter.format().
2788 - Bug #1637365: add subsection about "__name__ == __main__" to the
2791 - Patch #1698768: updated the "using Python on the Mac" intro.
2793 - Bug #1569057: Document that calling file.next() when the file is
2794 open for writing is undefined.
2796 - Patch #1489771: the syntax rules in Python Reference Manual were
2797 updated to reflect the current Python syntax.
2799 - Patch #1686451: Fix return type for
2800 PySequence_{Count,Index,Fast_GET_SIZE}.
2802 - Patch #1679379: add documentation for fnmatch.translate().
2804 - Bug #1629566: clarify the docs on the return values of parsedate()
2805 and parsedate_tz() in email.utils and rfc822.
2807 - Patch #1671450: add a section about subclassing builtin types to the
2808 "extending and embedding" tutorial.
2810 - Bug #1629125: fix wrong data type (int -> Py_ssize_t) in PyDict_Next
2813 - Bug #1565919: document set types in the Language Reference.
2815 - Bug #1546052: clarify that PyString_FromString(AndSize) copies the
2816 string pointed to by its parameter.
2818 - Bug #1566663: remove obsolete example from datetime docs.
2820 - Bug #1541682: Fix example in the "Refcount details" API docs.
2821 Additionally, remove a faulty example showing PySequence_SetItem
2822 applied to a newly created list object and add notes that this isn't
2829 - Patch #1552024: add decorator support to unparse.py demo script.
2831 - Make auto-generated python.vim file list built-ins and exceptions in
2832 alphatbetical order. Makes output more deterministic and easier to
2833 tell if the file is stale or not.
2835 - Bug #1546372: Fixed small bugglet in pybench that caused a missing
2836 file not to get reported properly.
2842 - Have the search path for building extensions follow the declared
2843 order in $CPPFLAGS and $LDFLAGS when adding directories from those
2844 environment variables.
2846 - Bug #1983: Added a check to pyport to verify that sizeof(pid_t) is
2847 smaller or equal sizeof(long).
2849 - Bug #1234: Fixed semaphore errors on AIX 5.2
2851 - Issue #1726: Remove Python/atof.c from PCBuild/pythoncore.vcproj.
2853 - Removed PCbuild8/ directory and added a new build directory for VS
2854 2005 based on the VS 2008 build directory to PC/VS8.0. The script
2855 PCbuild/vs8to9.py was added to sync changes from PCbuild to
2858 - Moved PCbuild/ directory for VS 2003 to PC/VS7.1 and renamed
2859 PCBuild9/ directory to PCBuild/.
2861 - Bug #1699: Define _BSD_SOURCE only on OpenBSD.
2863 - Bug #1608: use -fwrapv when GCC supports it. This is important,
2864 newer GCC versions may optimize away overflow buffer overflow checks
2865 without this option!
2867 - Patch #1418: Make the AC_REPLACE_FUNCS object files actually work.
2869 - Add a FAST_LOOPS build option that speeds-up looping by trading away
2870 periodic threadstate and signal checking in tight loops. By
2871 default, this option is turned-off. It should only be enabled in
2872 debugged, performance critical applications.
2874 - Patch #786737: Allow building in a tree of symlinks pointing to a
2877 - Bug #1737210: Change Manufacturer of Windows installer to PSF.
2879 - Bug #1746880: Correctly install DLLs into system32 folder on Win64.
2881 - Define _BSD_SOURCE, to get access to POSIX extensions on OpenBSD
2884 - Stop supporting AtheOS and cause a build error in configure for the
2887 - Bug #1655392: don't add -L/usr/lib/pythonX.Y/config to the LDFLAGS
2888 returned by python-config if Python was built with --enable-shared
2889 because that prevented the shared library from being used.
2891 - Patch #1569798: fix a bug in distutils when building Python from a
2892 directory within sys.exec_prefix.
2894 - Bug #1675511: Use -Kpic instead of -xcode=pic32 on Solaris/x86.
2896 - Disable _XOPEN_SOURCE on NetBSD 1.x.
2898 - configure now checks whether gcc supports the PyArg_ParseTuple
2901 - Bug #1578513: Cross compilation was broken by a change to configure.
2902 Repair so that it's back to how it was in 2.4.3.
2904 - Patch #1576954: Update VC6 build directory; remove redundant files
2907 - Bug #1568842: Fix test for uintptr_t.
2909 - Patch #1540470: for OpenBSD 4.0.
2911 - Fix build failure on kfreebsd and on the hurd.
2913 - Fix the build of the library reference in info format.
2915 - Allow Emacs 22 for building the documentation in info format.
2917 - Makefile.pre.in(buildbottest): Run an optional script
2918 pybuildbot.identify to include some information about the build
2925 - Unified naming convention for free lists and their limits. All free
2926 lists in Object/ are named ``free_list``, the counter ``numfree``
2927 and the upper limit is a macro ``PyName_MAXFREELIST`` inside an
2930 - ``PySet_Add()`` can now modify a newly created frozenset. Similarly
2931 to ``PyTuple_SetItem``, it can be used to populate a brand new
2932 frozenset; but it does not steal a reference to the added item.
2934 - Added ``PySet_Check()`` and ``PyFrozenSet_Check()`` to the set API.
2936 - Backport of PyUnicode_FromString(), _FromStringAndSize(), _Format
2937 and _FormatV from Python 3.0. Made PyLong_AsSsize_t and
2938 PyLong_FromSsize_t public functions.
2940 - Patch #1720595: add T_BOOL to the range of structmember types.
2942 - Issue #1534: Added ``PyFloat_GetMax()``, ``PyFloat_GetMin()`` and
2943 ``PyFloat_GetInfo()`` to the float API.
2945 - Issue #1521: On 64bit platforms, using PyArgs_ParseTuple with the t#
2946 of w# format code incorrectly truncated the length to an int, even
2947 when PY_SSIZE_T_CLEAN is set. The str.decode method used to return
2948 incorrect results with huge strings.
2950 - Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
2951 Py_TYPE and Py_REFCNT.
2953 - PEP 3123: Provide forward compatibility with Python 3.0, while
2954 keeping backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size,
2955 and PyVarObject_HEAD_INIT.
2957 - Py_ssize_t fields work in structmember when HAVE_LONG_LONG is not
2960 - Patch #1733960: Allow T_LONGLONG to accept ints.
2962 - T_PYSSIZET can now be used in PyMemberDef lists for Py_ssize_t members.
2964 - Added a new API function ``PyImport_ImportModuleNoBlock``.
2966 - Bug #1637022: Prefix AST symbols with _Py_.
2968 - Fix some leftovers from the conversion from int to Py_ssize_t
2969 (relevant to strings and sequences of more than 2**31 items).
2971 - Make _PyGILState_NoteThreadState() static, it was not used anywhere
2972 outside of pystate.c and should not be necessary.
2974 - ``PyImport_Import`` and ``PyImport_ImportModule`` now always do
2975 absolute imports. In earlier versions they might have used relative
2976 imports under some conditions.
2978 - Added case insensitive comparison methods ``PyOS_stricmp(char*,
2979 char*)`` and ``PyOS_strnicmp(char*, char*, Py_ssize_t)``.
2981 - Bug #1542693: remove semi-colon at end of PyImport_ImportModuleEx
2982 macro so it can be used as an expression.
2988 - Patch #1706: Drop support for Win9x, WinME and NT4. Python now
2989 requires Windows 2000 or greater. The _WINVER and NTDDI_VERSION
2990 macros are set to Win2k for x86/32bit builds and WinXP for AMD64
2993 - Conditionalize definition of _CRT_SECURE_NO_DEPRECATE and
2994 _CRT_NONSTDC_NO_DEPRECATE.
2996 - Bug #1216: Restore support for Visual Studio 2002.
3002 - cfmfile now raises a DeprecationWarning.
3004 - buildtools now raises a DeprecationWarning.
3006 - Removed the macfs module. It had been deprecated since Python 2.5.
3007 This lead to the deprecation of macostools.touched() as it relied
3008 solely on macfs and was a no-op under OS X.
3012 **(For information about older versions, consult the HISTORY file.)**