5 (editors: check NEWS.help for information about editing NEWS using ReST.)
7 What's New in Python 2.7 alpha 1
8 ================================
10 *Release date: XX-XXX-20XX*
15 - Issue #1571184: The Unicode database contains properties for more characters.
16 The tables for code points representing numeric values, white spaces or line
17 breaks are now generated from the official Unicode Character Database files,
18 and include information from the Unihan.txt file.
20 - Issue #7050: Fix a SystemError when trying to use unpacking and augmented
23 - Issue #5329: Fix os.popen* regression from 2.5 with commands as a
24 sequence running through the shell. Patch by Jean-Paul Calderone
27 - Issue #7019: Raise ValueError when unmarshalling bad long data, instead
28 of producing internally inconsistent Python longs.
30 - Issue #6990: Fix threading.local subclasses leaving old state around
31 after a reference cycle GC which could be recycled by new locals.
33 - Issue #6300: unicode.encode, unicode.decode, str.decode, and str.encode now
34 take keyword arguments.
36 - Issue #6922: Fix an infinite loop when trying to decode an invalid
37 UTF-32 stream with a non-raising error handler like "replace" or "ignore".
39 - Issue #6713: Improve performance of base 10 int -> string and
40 long -> string conversions.
42 - Issue #1590864: Fix potential deadlock when mixing threads and fork().
44 - Issue #6844: Do not emit DeprecationWarnings when accessing a "message"
45 attribute on exceptions that was set explicitly.
47 - Issue #6846: Fix bug where bytearray.pop() returns negative integers.
49 - classmethod no longer checks if its argument is callable.
51 - Issue #6750: A text file opened with io.open() could duplicate its output
52 when writing from multiple threads at the same time.
54 - Issue #6704: Improve the col_offset in AST for "for" statements with
55 a target of tuple unpacking.
57 - Issue #6707: dir() on an uninitialized module caused a crash.
59 - Issue #6540: Fixed crash for bytearray.translate() with invalid parameters.
61 - Issue #6573: set.union() stopped processing inputs if an instance of self
62 occurred in the argument chain.
64 - Issue #1616979: Added the cp720 (Arabic DOS) encoding.
66 - Issue #6070: On posix platforms import no longer copies the execute bit
67 from the .py file to the .pyc file if it is set. Patch by Marco N.
69 - Issue #4618: When unicode arguments are passed to print(), the default
70 separator and end should be unicode also.
72 - Issue #6119: Fixed a incorrect Py3k warning about order comparisons of builtin
73 functions and methods.
75 - Issue #6347: Include inttypes.h as well as stdint.h in pyport.h.
76 This fixes a build failure on HP-UX: int32_t and uint32_t are
77 defined in inttypes.h instead of stdint.h on that platform.
79 - Issue #4856: Remove checks for win NT.
81 - Issue #2016: Fixed a crash in a corner case where the dictionary of keyword
82 arguments could be modified during the function call setup.
84 - Removed the ipaddr module.
86 - Issue #6329: Fixed iteration for memoryview objects (it was being blocked
87 because it wasn't recognized as a sequence).
89 - Issue #6289: Encoding errors from compile() were being masked.
91 - When no module is given in a relative import, the module field of the
92 ImportFrom AST node is now None instead of an empty string.
94 - Assignment to None using import statements now raises a SyntaxError.
96 - Issue #4547: When debugging a very large function, it was not always
97 possible to update the lineno attribute of the current frame.
99 - Issue #5330: C functions called with keyword arguments were not reported by
100 the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.
102 - Issue #5982: staticmethod and classmethod now expose the wrapped
103 function with __func__.
105 - Added support for multiple context managers in the same with-statement.
106 Deprecated contextlib.nested() which is no longer needed.
108 - Issue #6101: A new opcode, SETUP_WITH, has been added to speed up the with
109 statement and correctly lookup the __enter__ and __exit__ special methods.
111 - Issue #5829: complex("1e500") no longer raises OverflowError. This
112 makes it consistent with float("1e500") and interpretation of real
113 and imaginary literals.
115 - Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
117 - __instancecheck__ and __subclasscheck__ are now completely ignored on classic
118 classes and instances.
120 - Issue #5994: the marshal module now has docstrings.
122 - Issue #5981: Fix three minor inf/nan issues in float.fromhex:
123 (1) inf and nan strings with trailing whitespace were incorrectly
124 rejected; (2) parsing of strings representing infinities and nans
125 was locale aware; and (3) the interpretation of fromhex('-nan')
126 didn't match that of float('-nan').
128 - Issue #5920: For float.__format__, change the behavior with the
129 empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
130 to be like 'g' but with at least one decimal point and with a
131 default precision of 12. Previously, the behavior the same but with
132 a default precision of 6. This more closely matches str(), and
133 reduces surprises when adding alignment flags to the empty
134 presentation type. This also affects the new complex.__format__ in
137 - Issue #5890: in subclasses of 'property' the __doc__ attribute was
138 shadowed by classtype's, even if it was None. property now
139 inserts the __doc__ into the subclass instance __dict__.
141 - Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
142 sequences. Patch by Nick Barnes and Victor Stinner.
144 - Issue #1588: Add complex.__format__. For example,
145 format(complex(1, 2./3), '.5') now produces a sensible result.
147 - Issue #5864: Fix empty format code formatting for floats so that it
148 never gives more than the requested number of significant digits.
150 - Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
151 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
153 - Issue #4971: Fix titlecase for characters that are their own
154 titlecase, but not their own uppercase.
156 - Issue #5835: Deprecate PyOS_ascii_formatd and replace it with
157 _PyOS_double_to_string or PyOS_double_to_string.
159 - Issue #5283: Setting __class__ in __del__ caused a segfault.
161 - Issue #5816: complex(repr(z)) now recovers z exactly, even when
162 z involves nans, infs or negative zeros.
164 - Implement PEP 378, Format Specifier for Thousands Separator, for
165 floats, ints, and longs.
167 - Issue #5515: 'n' formatting for ints, longs, and floats handles
168 leading zero formatting poorly.
170 - Issue #5772: For float.__format__, don't add a trailing ".0" if
171 we're using no type code and we have an exponent.
173 - Issue #3166: Make long -> float (and int -> float) conversions
176 - Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
179 - Issue #1869: fix a couple of minor round() issues. round(5e15+1)
180 was giving 5e15+2; round(-0.0) was losing the sign of the zero.
182 - Issue #5759: float() didn't call __float__ on str subclasses.
184 - Issue #5704: the "-3" command-line option now implies "-t".
186 - Issue #2170: refactored xml.dom.minidom.normalize, increasing both
187 its clarity and its speed.
189 - Issue #2396: the memoryview object was backported from Python 3.1.
191 - Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
192 when hitting the recursion limit under certain circumstances.
194 - Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
196 - Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
197 the end sys.path, for compatibility with the system install of Python.
199 - Issue #4688: Add a heuristic so that tuples and dicts containing only
200 untrackable objects are not tracked by the garbage collector. This can
201 reduce the size of collections and therefore the garbage collection overhead
202 on long-running programs, depending on their particular use of datatypes.
204 - Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
205 improve its performance. Long divisions and remainder operations
206 are now between 50% and 150% faster.
208 - Issue #4258: Make it possible to use base 2**30 instead of base
209 2**15 for the internal representation of integers, for performance
210 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
211 --enable-big-digits option to configure, which overrides the
212 default. Add sys.long_info structseq to provide information about
215 - Issue #4034: Fix weird attribute error messages of the traceback object. (As a
216 result traceback.__members__ no longer exists.)
218 - Issue #4474: PyUnicode_FromWideChar now converts characters outside
219 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
220 and sizeof(Py_UNICODE) == 2.
222 - Issue #5237: Allow auto-numbered fields in str.format(). For
223 example: '{} {}'.format(1, 2) == '1 2'.
225 - Issue #3652: Make the 'line' argument for warnings.showwarning() a
226 requirement. Means the DeprecationWarning from Python 2.6 can go away.
228 - Issue #5247: Improve error message when unknown format codes are
229 used when using str.format() with str, unicode, long, int, and
232 - Running Python with the -3 option now also warns about classic division
235 - Issue #5260: Long integers now consume less memory: average
236 saving is 2 bytes per long on a 32-bit system and 6 bytes per long
239 - Issue #5186: Reduce hash collisions for objects with no __hash__ method by
240 rotating the object pointer by 4 bits to the right.
242 - Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
243 it now forces its argument to double before testing for infinity.
245 - Issue #4978: Passing keyword arguments as unicode strings is now allowed.
247 - Issue #1242657: the __len__() and __length_hint__() calls in several tools
248 were suppressing all exceptions. These include list(), filter(), map(),
249 zip(), and bytearray().
251 - os.ftruncate raises OSErrors instead of IOErrors for consistency with other os
254 - Issue #4991: Passing invalid file descriptors to io.FileIO now raises an
257 - Issue #4807: Port the _winreg module to Windows CE.
259 - Issue #4935: The overflow checking code in the expandtabs() method common
260 to str, bytes and bytearray could be optimized away by the compiler, letting
261 the interpreter segfault instead of raising an error.
263 - Issue #3720: Fix a crash when an iterator modifies its class and removes its
266 - Issue #4893: Use NT threading on CE.
268 - Issue #4915: Port sysmodule to Windows CE.
270 - Issue #4074: Change the criteria for doing a full garbage collection (i.e.
271 collecting the oldest generation) so that allocating lots of objects without
272 destroying them does not show quadratic performance. Based on a proposal by
274 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
276 - Issue #4850: Change COUNT_ALLOCS variables to Py_ssize_t.
278 - Issue #1180193: When importing a module from a .pyc (or .pyo) file with
279 an existing .py counterpart, override the co_filename attributes of all
280 code objects if the original filename is obsolete (which can happen if the
281 file has been renamed, moved, or if it is accessed through different paths).
282 Patch by Ziga Seilnacht and Jean-Paul Calderone.
284 - Issue #4075: Use OutputDebugStringW in Py_FatalError.
286 - Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
287 file with `str' filename on Windows.
289 - Issue #3680: Reference cycles created through a dict, set or deque iterator
290 did not get collected.
292 - Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
293 where the tp_hash and tp_dict slots are both NULL.
295 - Issue #4764: With io.open, IOError.filename is set when trying to open a
296 directory on POSIX systems.
298 - Issue #4764: IOError.filename is set when trying to open a directory on POSIX
301 - Issue #4759: None is now allowed as the first argument of
302 bytearray.translate(). It was always allowed for bytes.translate().
304 - Added test case to ensure attempts to read from a file opened for writing
307 - Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
308 print elapsed times, not only when some objects are uncollectable /
309 unreachable. Original patch by Neil Schemenauer.
311 - Issue #3439: Add a bit_length method to int and long.
313 - Issue #2183: Simplify and optimize bytecode for list comprehensions.
314 Original patch by Neal Norwitz.
316 - Issue #4597: Fixed exception handling when the __exit__ function of a
317 context manager returns a value that cannot be converted to a bool.
319 - Issue #4597: Fixed several opcodes that weren't always propagating
322 - Issue #4445: Replace "sizeof(PyStringObject)" with
323 "offsetof(PyStringObject, ob_sval) + 1" when allocating memory for
324 str instances. On a typical machine this saves 3 bytes of memory
325 (on average) per string allocation.
327 - Issue #3996: On Windows, the PyOS_CheckStack function would cause the
328 interpreter to abort ("Fatal Python error: Could not reset the stack!")
329 instead of throwing a MemoryError.
331 - Issue #3689: The list reversed iterator now supports __length_hint__
332 instead of __len__. Behavior now matches other reversed iterators.
334 - Issue #4367: Python would segfault during compiling when the unicodedata
335 module couldn't be imported and \N escapes were present.
337 - Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
338 method on file objects with closefd=False. The file descriptor is still
339 kept open but the file object behaves like a closed file. The ``FileIO``
340 object also got a new readonly attribute ``closefd``.
342 - Issue #4348: Some bytearray methods returned that didn't cause any change to
343 the bytearray, returned the same bytearray instead of a copy.
345 - Issue #4317: Fixed a crash in the imageop.rgb2rgb8() function.
347 - Issue #4230: If ``__getattr__`` is a descriptor, it now functions correctly.
349 - Issue #4048: The parser module now correctly validates relative imports.
351 - Issue #4225: ``from __future__ import unicode_literals`` didn't work in an
354 - Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
355 method does not return iterators for the 4th and 5th items.
357 - Issue #4209: Enabling unicode_literals and the print_function in the same
358 __future__ import didn't work.
360 - Using ``nonlocal`` as a variable name will now raise a Py3k SyntaxWarning
361 because it is a reserved word in 3.x.
363 - On windows, os.chdir given unicode was not working if GetCurrentDirectoryW
364 returned a path longer than MAX_PATH. (But It's doubtful this code path is
365 really executed because I cannot move to such directory on win2k)
367 - Issue #4069: When set.remove(element) is used with a set element, the element
368 is temporarily replaced with an equivalent frozenset. But the eventual
369 KeyError would always report the empty frozenset([]) as the missing key. Now
370 it correctly refers to the initial element.
372 - Issue #4509: Various issues surrounding resize of bytearray objects to
373 which there are buffer exports.
375 - Issue #4748: Lambda generators no longer return a value.
377 - Issue #3582: Use native TLS functions on Windows
379 - The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
381 - Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
384 - Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
385 to avoid compiler warnings.
387 - Issue #5705: os.setuid() would not accept values > 2**31-1 but pwd.getpwnam()
388 returned them on 64bit platforms.
390 - Issue #5108: Handle %s like %S and %R in PyUnicode_FromFormatV(): Call
391 PyUnicode_DecodeUTF8() once, remember the result and output it in a second
392 step. This avoids problems with counting UTF-8 bytes that ignores the effect
393 of using the replace error handler in PyUnicode_DecodeUTF8().
395 - Issue #3739: The unicode-internal encoder now reports the number of characters
396 consumed like any other encoder (instead of the number of bytes).
401 - Issue #7086: Added TCP support to SysLogHandler, and tidied up some
402 anachronisms in the code which were a relic of 1.5.2 compatibility.
404 - Issue #7082: When falling back to the MIME 'name' parameter, the
405 correct place to look for it is the Content-Type header.
407 - Issue #7048: Force Decimal.logb to round its result when that result
408 is too large to fit in the current precision.
410 - Issue #6516: Added owner/group support when creating tar archives in
413 - Issue #7031: Add TestCase.assert(Not)IsInstance() methods.
415 - Issue #6790: Make it possible again to pass an `array.array` to
416 `httplib.HTTPConnection.send`. Patch by Kirk McDonald.
418 - Issue #6236, #6348: Fix various failures in the `io` module under AIX
419 and other platforms, when using a non-gcc compiler. Patch by egreen.
421 - Issue #6954: Fixed crash when using DISTUTILS_DEBUG flag in Distutils.
423 - Issue #6851: Fix urllib.urlopen crash on secondairy threads on OSX 10.6
425 - Issue #4606: Passing 'None' if ctypes argtype is set to POINTER(...)
426 does now always result in NULL.
428 - Issue #5042: ctypes Structure sub-subclass does now initialize
429 correctly with base class positional arguments.
431 - Issue #6938: Fix a TypeError in string formatting of a multiprocessing
434 - Issue #6635: Fix profiler printing usage message.
436 - Issue #6856: Add a filter keyword argument to TarFile.add().
438 - Issue #6163: Fixed HP-UX runtime library dir options in
439 distutils.unixcompiler. Initial patch by Sridhar Ratnakumar and
440 Michael Haubenwallner.
442 - Issue #6857: Default format() alignment should be '>' for Decimal
445 - Issue #6795: int(Decimal('nan')) now raises ValueError instead of
446 returning NaN or raising InvalidContext. Also, fix infinite recursion
447 in long(Decimal('nan')).
449 - Issue #6850: Fix bug in Decimal._parse_format_specifier for formats
450 with no type specifier.
452 - Issue #4937: plat-mac/bundlebuilder revers to non-existing version.plist
454 - Issue #6838: Use a list to accumulate the value instead of
455 repeatedly concatenating strings in httplib's
456 HTTPResponse._read_chunked providing a significant speed increase
457 when downloading large files servend with a Transfer-Encoding of 'chunked'.
459 - Issue #5275: In Cookie's Cookie.load(), properly handle non-string arguments
462 - Issue #2666: Handle BROWSER environment variable properly for unknown browser
463 names in the webbrowser module.
465 - Issue #6054: Do not normalize stored pathnames in tarfile.
467 - Issue #6794: Fix Decimal.compare_total and Decimal.compare_total_mag: NaN
468 payloads are now ordered by integer value rather than lexicographically.
470 - Issue #6693: New functions in site.py to get user/global site packages paths.
472 - The thread.lock type now supports weak references.
474 - Issue #1356969: Add missing info methods in Tix.HList.
476 - Issue #1522587: New constants and methods for the Tix.Grid widget.
478 - Issue #1250469: Fix the return value of Tix.PanedWindow.panes.
480 - Issue #1119673: Do not override Tkinter.Text methods when creating a
483 - Issue #6665: Fix fnmatch to properly match filenames with newlines in them.
485 - Issue #1135: Add the XView and YView mix-ins to avoid duplicating
486 the xview* and yview* methods.
488 - Issue #6629: Fix a data corruption issue in the new `io` package, which could
489 occur when writing to a BufferedRandom object (e.g. a file opened in "rb+" or
490 "wb+" mode) after having buffered a certain amount of data for reading. This
491 bug was not present in the pure Python implementation.
493 - Issue #4660: If a multiprocessing.JoinableQueue.put() was preempted, it was
494 possible to get a spurious 'task_done() called too many times' error.
496 - Issue #1628205: Socket file objects returned by socket.socket.makefile() now
497 properly handles EINTR within the read, readline, write & flush methods.
498 The socket.sendall() method now properly handles interrupted system calls.
500 - Issue #6595: The Decimal constructor now allows arbitrary Unicode
501 decimal digits in input, as recommended by the standard. Previously
502 it was restricted to accepting [0-9].
504 - Issue #6511: ZipFile now raises BadZipfile (instead of an IOError) when
505 opening an empty or very small file.
507 - Issue #6553: Fixed a crash in cPickle.load(), when given a file-like object
508 containing incomplete data.
510 - Issue #6545: Removed assert statements in distutils.Extension, so the
511 behavior is similar when used with -O.
513 - unittest has been split up into a package. All old names should still work.
515 - Issue #6431: Make Fraction type return NotImplemented when it doesn't
516 know how to handle a comparison without loss of precision. Also add
517 correct handling of infinities and nans for comparisons with float.
519 - Issue #6415: Fixed warnings.warn segfault on bad formatted string.
521 - Issue #6466: now distutils.cygwinccompiler and distutils.emxccompiler
522 uses the same refactored function to get gcc/ld/dllwrap versions numbers.
523 It's `distutils.util.get_compiler_versions`. Added deprecation warnings
524 for the obsolete get_versions() functions.
526 - Issue #6433: fixed issues with multiprocessing.pool.map hanging on empty list
528 - Issue #6314: logging: Extra checks on the "level" argument in more places.
530 - Issue #2622: Fixed an ImportError when importing email.messsage from a
531 standalone application built with py2exe or py2app.
533 - Issue #6455: Fixed test_build_ext under win32.
535 - Issue #6377: Enabled the compiler option, and deprecate its usage as an
538 - Issue #6413: Fixed the log level in distutils.dist for announce.
540 - Issue #3392: The subprocess communicate() method no longer fails in select()
541 when file descriptors are large; communicate() now uses poll() when possible.
543 - Issue #6403: Fixed package path usage in build_ext.
545 - Issues #5155, 5313, 5331: multiprocessing.Process._bootstrap was
546 unconditionally calling "os.close(sys.stdin.fileno())" resulting in file
549 - Issue #6365: Distutils build_ext inplace mode was copying the compiled
550 extension in a subdirectory if the extension name had dots.
552 - Issue #6344: Fixed a crash of mmap.read() when passed a negative argument.
554 - Issue #5230: pydoc would report no documentation found if a module generated
555 a 'not found' import error when loaded; it now reports the import errors.
556 Thanks to Lucas Prado Melo for initial fix and collaboration on the tests.
558 - Issue #6314: logging.basicConfig() performs extra checks on the "level"
561 - Issue #6164: Added an AIX specific linker argument in Distutils
562 unixcompiler. Original patch by Sridhar Ratnakumar.
564 - Issue #6274: Fixed possible file descriptors leak in subprocess.py
566 - Issue #6189: Restored compatibility of subprocess.py with Python 2.2.
568 - Issue #6287: Added the license field in Distutils documentation.
570 - Issue #6286: Now Distutils upload command is based on urllib2 instead of
571 httplib, allowing the usage of http_proxy.
573 - Issue #6271: mmap tried to close invalid file handle (-1) when annonymous.
576 - Issue #6215: All bug fixes and enhancements from the Python 3.1 io library
577 (including the fast C implementation) have been backported to the standard
580 - Issue #6258: Support AMD64 in bdist_msi.
582 - Issue #5262: Fixed bug in next rollover time computation in
583 TimedRotatingFileHandler.
585 - Issue #6263: Fixed syntax error in distutils.cygwincompiler.
587 - Issue #5201: distutils.sysconfig.parse_makefile() now understands `$$`
588 in Makefiles. This prevents compile errors when using syntax like:
589 `LDFLAGS='-rpath=\$$LIB:/some/other/path'`. Patch by Floris Bruynooghe.
591 - Issue #5767: Removed sgmlop support from xmlrpclib.
593 - Issue #6131: test_modulefinder leaked when run after test_distutils.
594 Patch by Hirokazu Yamamoto.
596 - Issue #6048: Now Distutils uses the tarfile module in archive_util.
598 - Issue #5150: IDLE's format menu now has an option to strip trailing
601 - Issue #6121: pydoc now ignores leading and trailing spaces in the
602 argument to the 'help' function.
604 - In unittest, using a skipping decorator on a class is now equivalent to
605 skipping every test on the class. The ClassTestSuite class has been removed.
607 - Issue #6050: Don't fail extracting a directory from a zipfile if
608 the directory already exists.
610 - Issue #5311: bdist_msi can now build packages that do not depend on a
611 specific Python version.
613 - Issue #1309352: fcntl now converts its third arguments to a C `long` rather
614 than an int, which makes some operations possible under 64-bit Linux (e.g.
615 DN_MULTISHOT with F_NOTIFY).
617 - Issue #1424152: Fix for httplib, urllib2 to support SSL while working through
618 proxy. Original patch by Christopher Li, changes made by Senthil Kumaran.
620 - Issue #1983: Fix functions taking or returning a process identifier to use
621 the dedicated C type ``pid_t`` instead of a C ``int``. Some platforms have
622 a process identifier type wider than the standard C integer type.
624 - Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket.
625 Patch by Farhan Ahmad, test by Marcin Bachry.
627 - Issue #6062: In distutils, fixed the package option of build_ext. Feedback
628 and tests on pywin32 by Tim Golden.
630 - Issue #6053: Fixed distutils tests on win32. patch by Hirokazu Yamamoto.
632 - Issue #6046: Fixed the library extension when distutils build_ext is used
633 inplace. Initial patch by Roumen Petrov.
635 - Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
638 - Issue #2116: Weak references and weak dictionaries now support copy()ing and
641 - Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
643 - Issue #5918: Fix a crash in the parser module.
645 - Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
647 - Issue #6022: a test file was created in the current working directory by
648 test_get_outputs in Distutils.
650 - Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
651 file is a binary. Patch by Brodie Rao, tests by Daniel Diniz.
653 - Issue #5977: distutils build_ext.get_outputs was not taking into account the
654 inplace option. Initial patch by kxroberto.
656 - Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
657 for old-style extensions.
659 - Issue #5971: StreamHandler.handleError now swallows IOErrors which occur when
660 trying to print a traceback.
662 - Issue #5976: Fixed Distutils test_check_environ.
664 - Issue #5900: Ensure RUNPATH is added to extension modules with RPATH if GNU
665 ld is used. Original patch by Floris Bruynooghe.
667 - Issue #5941: Distutils build_clib command was not working anymore because
668 of an incomplete costumization of the archiver command. Added ARFLAGS in the
669 Makefile besides AR and make Distutils use it. Original patch by David
672 - Issue 5955: aifc's close method did not close the file it wrapped,
673 now it does. This also means getfp method now returns the real fp.
675 - Issue #4875: On win32, ctypes.util.find_library does no longer
678 - Issue #5142: Add the ability to skip modules while stepping to pdb.
680 - Issue #1309567: Fix linecache behavior of stripping subdirectories when
681 looking for files given by a relative filename.
683 - Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
684 extracting a file to the root directory.
686 - Issue #5913: os.listdir() should fail for empty path on windows.
688 - Issue #5084: unpickling now interns the attribute names of pickled objects,
689 saving memory and avoiding growth in size of subsequent pickles. Proposal
690 and original patch by Jake McGuire.
692 - Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
693 error when a named pipe is encountered, rather than blocking infinitely.
695 - Issue #3959: The ipaddr module has been added to the standard library.
696 Contributed by Google.
698 - Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
700 - Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
703 - Issue #4305: ctypes should now build again on mipsel-linux-gnu
705 - Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
706 string is already in normalized form, by performing a quick check beforehand.
707 Original patch by Rauli Ruohonen.
709 - Issue #5853: calling a function of the mimetypes module from several threads
710 at once could hit the recursion limit if the mimetypes database hadn't been
713 - Issue #5854: Updated __all__ to include some missing names and remove some
714 names which should not be exported.
716 - Issue #5810: Fixed Distutils test_build_scripts so it uses
717 sysconfig.get_config_vars.
719 - Issue #4951: Fixed failure in test_httpservers.
721 - Issue #3102: All global symbols that the _ctypes extension defines
722 are now prefixed with 'Py' or '_ctypes'.
724 - Issue #5041: ctypes does now allow pickling wide character.
726 - Issue #5812: For the two-argument form of the Fraction constructor,
727 Fraction(m, n), m and n are permitted to be arbitrary Rational
730 - Issue #5812: Fraction('1e6') is valid: more generally, any string
731 that's valid for float() is now valid for Fraction(), with the
732 exception of strings representing NaNs and infinities.
734 - Issue #5795: Fixed test_distutils failure on Debian ppc.
736 - Issue #5768: Fixed bug in Unicode output logic and test case for same.
738 - Issue #1161031: fix readwrite select flag handling: POLLPRI now
739 results in a handle_expt_event call, not handle_read_event, and POLLERR
740 and POLLNVAL now call handle_close, not handle_expt_event. Also,
741 dispatcher now has an 'ignore_log_types' attribute for suppressing
742 log messages, which is set to 'warning' by default.
744 - Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
746 - Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
747 a value in SafeConfigParser.
749 - Issue #5732: added a new command in Distutils: check.
751 - Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
752 platforms. Initial patch by Paul Moore.
754 - Issue #2254: Fix CGIHTTPServer information disclosure. Relative paths are
755 now collapsed within the url properly before looking in cgi_directories.
757 - Issue #5095: Added bdist_msi to the list of bdist supported formats.
758 Initial fix by Steven Bethard.
760 - Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
761 Initial fix by Wayne Davison.
763 - Issue #5693: TestSuite.__iter__ can now be consistently overridden in subclasses.
765 - Issue #5694: removed spurious test output in Distutils (test_clean).
767 - Issue #5471: Fix os.path.expanduser() for $HOME set to '/'.
769 - Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
771 - Issue #1726172: fix IndexError in the case of and empty response in ftplib.
773 - Issue #2625: added missing iteritems() call to the for loop in
774 mailbox.MH.get_message().
776 - Issue #5585: Add the ability to call an initializer to mulitiprocessing.manager
777 so that users can install custom handlers/etc.
779 - Issue #3551: Patch multiprocessing to raise a proper exception if the size of the
780 object when writefile is called causes a ERROR_NO_SYSTEM_RESOURCES. Added docs
781 to note the limitation
783 - unittest.assertNotEqual() now uses the inequality operator (!=) instead
784 of the equality operator.
786 - Issue #6001: Test discovery for unittest. Implemented in
787 unittest.TestLoader.discover and from the command line.
789 - Issue #5679: The methods unittest.TestCase.addCleanup and doCleanups were added.
790 addCleanup allows you to add cleanup functions that will be called
791 unconditionally (after setUp if setUp fails, otherwise after tearDown). This
792 allows for much simpler resource allocation and deallocation during tests.
794 - Issue #3379: unittest.main now takes an optional exit argument. If False main
795 doesn't call sys.exit allowing it to be used from the interactive interpreter.
797 - Issue #5995: unittest.main now takes an optional verbosity argument allowing
798 test modules to be run with a higher than default verbosity.
800 - Issue #5995: A fix to allow you to run "python -m unittest test_module" or
801 "python -m unittest test_module.TestClass" from the command line.
803 - Issue #5728: unittest.TestResult has new startTestRun and stopTestRun methods;
804 called immediately before and after a test run.
806 - Issue #5663: better failure messages for unittest asserts. Default assertTrue
807 and assertFalse messages are now useful. TestCase has a longMessage attribute.
808 This defaults to False, but if set to True useful error messages are shown in
809 addition to explicit messages passed to assert methods.
811 - Issue #3110: Add additional protect around SEM_VALUE_MAX for multiprocessing
813 - In Pdb, prevent the reassignment of __builtin__._ by sys.displayhook on
816 - Issue #4572: added SEEK_* symbolic constants to io module.
818 - Issue #1665206 (partially): Move imports in cgitb to the top of the module
819 instead of performing them in functions. Helps prevent import deadlocking in
822 - Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
824 - Actually make the SimpleXMLRPCServer CGI handler work.
826 - Issue #2522: locale.format now checks its first argument to ensure it has
827 been passed only one pattern, avoiding mysterious errors where it appeared
828 that it was failing to do localization.
830 - Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
833 - Issue #5619: Multiprocessing children disobey the debug flag and causes
834 popups on windows buildbots. Patch applied to work around this issue.
836 - Issue #5632: Thread.ident was None for the main thread and threads not created
837 with the threading module.
839 - Issue #5400: Added patch for multiprocessing on netbsd compilation/support
841 - Issue #5387: Fixed mmap.move crash by integer overflow.
843 - Issue #5261: Patch multiprocessing's semaphore.c to support context
844 manager use: "with multiprocessing.Lock()" works now.
846 - Issue #5177: Multiprocessing's SocketListener class now uses
847 socket.SO_REUSEADDR on all connections so that the user no longer needs
848 to wait 120 seconds for the socket to expire.
850 - Adjusted _tkinter to compile without warnings when WITH_THREAD is not
851 defined (part of issue #5035).
853 - Issue #5561: Removed the sys.version_info shortcuts from platform's
854 python_version() and python_version_tuple() since they produced different
855 output compared to previous Python versions.
857 - Issue #1034053: unittest now supports skipping tests and expected failures.
859 - The unittest.TestCase.assertRaises() method now returns a context manager when
860 not given a callable so that code to be tested can be written inline using
863 - The unittest.TestCase.assertEqual() now displays the differences in lists,
864 tuples, dicts and sets on failure. Many new handy type and comparison
865 specific assert* methods have been added that fail with error messages
866 actually useful for debugging. Contributed in part by Google. [Issue #2578]
868 - Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
869 forever on incomplete input. That caused tarfile.open() to hang when used
870 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
871 partial bzip2 compressed data.
873 - Issue #5536: urllib.urlretrieve makes sure to close the file it's writing to
874 even if an exception occurs.
876 - Issue #5381: Added object_pairs_hook to the json module. This allows
877 OrderedDicts to be built by the decoder.
879 - Issue #2110: Add support for thousands separator and 'n' type
880 specifier to Decimal.__format__
882 - Fix Decimal.__format__ bug that swapped the meanings of the '<' and
883 '>' alignment characters.
885 - Issue #1222: locale.format() bug when the thousands separator is a space
888 - Issue #5472: Fixed distutils.test_util tear down. Original patch by
891 - collections.deque() objects now have a read-only attribute called maxlen.
893 - Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
894 it is has been populated and properly configured in order to prevent
897 - Issue #4792: Prevent a segfault in _tkinter by using the
898 guaranteed to be safe interp argument given to the PythonCmd in place of
899 the Tcl interpreter taken from a PythonCmd_ClientData.
901 - Issue #5193: Guarantee that Tkinter.Text.search returns a string.
903 - Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
904 Original patch by Akira Kitada.
906 - Issue #5385: Fixed mmap crash after resize failure on windows.
908 - Issue #5179: Fixed subprocess handle leak on failure on windows.
910 - PEP 372: Added collections.OrderedDict().
912 - The _asdict() for method for namedtuples now returns an OrderedDict().
914 - The configparser module now defaults to using an ordered dictionary.
916 - Issue #4308: httplib.IncompleteRead's repr doesn't include all of the data all
919 - Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
920 import guess_extension`` was used.
922 - Issue #1733986: Fixed mmap crash in accessing elements of second map object
923 with same tagname but larger size than first map. (Windows)
925 - Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
928 - Issue #1533164: Installed but not listed *.pyo was breaking Distutils
931 - Issue #5378: added --quiet option to Distutils bdist_rpm command.
933 - Issue #5052: make Distutils compatible with 2.3 again.
935 - Deprecated methods of symtable.Symbol have been removed: is_keywordarg(),
936 is_vararg(), and is_in_tuple().
938 - Issue #5316: Fixed buildbot failures introduced by multiple inheritance
941 - Issue #5287: Add exception handling around findCaller() call to help out
944 - Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
945 The file was resized to wrong size.
947 - Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
949 - Issue #2279: distutils.sdist.add_defaults now add files
950 from the package_data and the data_files metadata.
952 - Issue #5257: refactored all tests in distutils, so they use
953 support.TempdirManager, to avoid writing in the tests directory.
955 - Issue #4524: distutils build_script command failed with --with-suffix=3.
956 Initial patch by Amaury Forgeot d'Arc.
958 - Issue #2461: added tests for distutils.util
960 - Issue #1008086: Fixed socket.inet_aton() to always return 4 bytes even on
961 LP64 platforms (most 64-bit Linux, bsd, unix systems).
963 - Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
964 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
966 - Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
967 under NT and OS2. Patch by Philip Jenvey.
969 - Issue #5128: Make compileall properly inspect bytecode to determine if needs
970 to be recreated. This avoids a timing hole thanks to the old reliance on the
971 ctime of the files involved.
973 - Issue #5122: Synchronize tk load failure check to prevent a potential
976 - Issue #1818: collections.namedtuple() now supports a keyword argument
977 'rename' which lets invalid fieldnames be automatically converted to
978 positional names in the form, _1, _2, ...
980 - Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
982 - Issue #5170: Fixed Unicode output bug in logging and added test case.
983 This is a regression which did not occur in 2.5.
985 - Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
986 public documented method ``ZipImporter.get_filename()``.
988 - Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
989 the execution of packages by looking for and executing a ``__main__``
990 submodule when a package name is supplied. Initial patch by Andi
993 - Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
994 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
995 Tkapp_Call when calling from a thread different than the one that created
996 the Tcl interpreter. Patch by Robert Hancock.
998 - Issue #1520877: Now distutils.sysconfig reads $AR from the
999 environment/Makefile. Patch by Douglas Greiman.
1001 - Issue #4285: Change sys.version_info to be a named tuple. Patch by
1004 - Issue #1276768: The verbose option was not used in the code of
1005 distutils.file_util and distutils.dir_util.
1007 - Issue #5132: Fixed trouble building extensions under Solaris with
1008 --enabled-shared activated. Initial patch by Dave Peterson.
1010 - Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
1012 - Issue #2047: shutil.move() could believe that its destination path was
1013 inside its source path if it began with the same letters (e.g. "src" vs.
1016 - Issue #4920: Fixed .next() vs .__next__() issues in the ABCs for
1017 Iterator and MutableSet.
1019 - Added the ttk module. See issue #2983: Ttk support for Tkinter.
1021 - Issue #5021: doctest.testfile() did not create __name__ and
1022 collections.namedtuple() relied on __name__ being defined.
1024 - Backport importlib from Python 3.1. Only the import_module() function has
1025 been backported to help facilitate transitions from 2.7 to 3.1.
1027 - Issue #1885: distutils. When running sdist with --formats=tar,gztar
1028 the tar file was overriden by the gztar one.
1030 - Issue #4863: distutils.mwerkscompiler has been removed.
1032 - Added a new itertools functions: combinations_with_replacement()
1035 - Issue #5032: added a step argument to itertools.count() and
1036 allowed non-integer arguments.
1038 - Fix and properly document the multiprocessing module's logging
1039 support, expose the internal levels and provide proper usage
1042 - Issue #1672332: fix unpickling of subnormal floats, which was
1043 producing a ValueError on some platforms.
1045 - Issue #3881: Help Tcl to load even when started through the
1046 unreadable local symlink to "Program Files" on Vista.
1048 - Issue #4710: Extract directories properly in the zipfile module;
1049 allow adding directories to a zipfile.
1051 - Issue #3807: _multiprocessing build fails when configure is passed
1052 --without-threads argument. When this occurs, _multiprocessing will
1053 be disabled, and not compiled.
1055 - Issue #5008: When a file is opened in append mode with the new IO library,
1056 do an explicit seek to the end of file (so that e.g. tell() returns the
1057 file size rather than 0). This is consistent with the behaviour of the
1058 traditional 2.x file object.
1060 - Issue #5013: Fixed a bug in FileHandler which occurred when the delay
1063 - Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
1064 which inherited from numbers.py which did not have __slots__ defined. The
1065 numbers hierarchy now has its own __slots__ declarations.
1067 - Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
1068 for *nix machines for negative handles and large int handles. Without this check
1069 it is possible to segfault the interpreter.
1071 - Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
1074 - Issue #1225107: inspect.isclass() returned True for instances with a custom
1077 - Issue #3997: zipfiles generated with more than 65536 files could not be
1078 opened with other applications.
1080 - Issue #1162154: inspect.getmembers() now skips attributes that raise
1081 AttributeError, e.g. a __slots__ attribute which has not been set.
1083 - Issue #1696199: Add collections.Counter() for rapid and convenient
1086 - Issue #3860: GzipFile and BZ2File now support the context manager protocol.
1088 - Issue #4272: Add an optional argument to the GzipFile constructor to override
1089 the timestamp in the gzip stream. The default value remains the current time.
1090 The information can be used by e.g. gunzip when decompressing. Patch by
1093 - Restore Python 2.3 compatibility for decimal.py.
1095 - Issue #1702551: distutils sdist was not excluding VCS directories under
1096 Windows. Inital solution by Guy Dalberto.
1098 - The _tkinter module functions "createfilehandler", "deletefilehandler",
1099 "createtimerhandler", "mainloop", "dooneevent" and "quit" have been
1100 deprecated for removal in 3.x
1102 - Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
1103 to the decimal module.
1105 - Issue #4812: add missing underscore prefix to some internal-use-only
1106 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
1108 - Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
1109 the function is not a generator.
1111 - Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
1112 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
1114 - Issue #4646: distutils was choking on empty options arg in the setup
1115 function. Original patch by Thomas Heller.
1117 - Fractions.from_float() no longer loses precision for integers too big to
1120 - Issue #4790: The nsmallest() and nlargest() functions in the heapq module
1121 did unnecessary work in the common case where no key function was specified.
1123 - Issue #3767: Convert Tk object to string in tkColorChooser.
1125 - Issue #3248: Allow placing ScrolledText in a PanedWindow.
1127 - Issue #4444: Allow assertRaises() to be used as a context handler, so that
1128 the code under test can be written inline if more practical.
1130 - Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
1131 works as expected in the interactive environment.
1133 - Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
1136 - Issue #4400: .pypirc default generated file was broken in distutils.
1138 - Issue #4736: io.BufferedRWPair's closed property now functions properly.
1140 - Issue #3954: Fix a potential SystemError in _hotshot.logreader error
1143 - Issue #4574: fix a crash in io.IncrementalNewlineDecoder when a carriage
1144 return encodes to more than one byte in the source encoding (e.g. UTF-16)
1145 and gets split on a chunk boundary.
1147 - Issue #4223: inspect.getsource() will now correctly display source code
1148 for packages loaded via zipimport (or any other conformant PEP 302
1149 loader). Original patch by Alexander Belopolsky.
1151 - Issue #4201: pdb can now access and display source code loaded via
1152 zipimport (or any other conformant PEP 302 loader). Original patch by
1153 Alexander Belopolsky.
1155 - Issue #4197: doctests in modules loaded via zipimport (or any other PEP
1156 302 conformant loader) will now work correctly in most cases (they
1157 are still subject to the constraints that exist for all code running
1158 from inside a module loaded via a PEP 302 loader and attempting to
1159 perform IO operations based on __file__). Original patch by
1160 Alexander Belopolsky.
1162 - Issues #4082 and #4512: Add runpy support to zipimport in a manner that
1163 allows backporting to maintenance branches. Original patch by
1164 Alexander Belopolsky.
1166 - Issue #4163: Use unicode-friendly word splitting in the textwrap functions
1167 when given an unicode string.
1169 - Issue #4616: TarFile.utime(): Restore directory times on Windows.
1171 - Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
1172 give correct results in the case where one argument is a quiet NaN
1173 and the other is a finite number that requires rounding.
1175 - Issue #1030250: Distutils created directories even when run with the
1178 - Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
1181 - Issue #4529: fix the parser module's validation of try-except-finally
1184 - Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
1185 not a malformed option.
1187 - Added the subprocess.check_output() convenience function to get output
1188 from a subprocess on success or raise an exception on error.
1190 - Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1191 support unusual filenames (such as those containing semi-colons) in
1192 Content-Disposition headers.
1194 - Issue #4384: Added logging integration with warnings module using
1195 captureWarnings(). This change includes a NullHandler which does nothing;
1196 it will be of use to library developers who want to avoid the "No handlers
1197 could be found for logger XXX" message which can appear if the library user
1198 doesn't configure logging.
1200 - Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
1203 - Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
1204 the ctypes module is not present.
1206 - FileIO's mode attribute now always includes ``"b"``.
1208 - Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
1210 - httplib.HTTPConnection.putheader() now accepts an arbitrary number of values
1211 for any header, matching what the documentation has claimed for a while.
1213 - Issue #3774: Fixed an error when create a Tkinter menu item without command
1216 - Fixed a modulefinder crash on certain relative imports.
1218 - Issue #4150: Pdb's "up" command now works for generator frames in post-mortem
1221 - Issue #4092: Return ArgInfo as promised in the documentation from
1222 inspect.getargvalues.
1224 - Issue #3935: Properly support list subclasses in bisect's C implementation.
1226 - Issue #4014: Don't claim that Python has an Alpha release status, in addition
1227 to claiming it is Mature.
1229 - Issue #4730: Fixed the cPickle module to handle correctly astral characters
1230 when protocol 0 is used.
1232 - Issue #1594: MacOS.GetCreatorAndType now always returns a big-endian result,
1233 to be consistent with Apple tools.
1235 - Issue #900949: plat-mac/videoreader.py no longer relies on a non-existing
1238 - Issue #16278952: plat-mac/videoreader.py now correctly imports MediaDescr
1240 - Issue #1737832 : plat-mac/EasyDialog.py no longer uses the broken aepack
1243 - Issue #1149804: macostools.mkdirs now even works when another process
1244 creates one of the needed subdirectories.
1246 - Issue #900506: added --no-zipimport flag to the bundlebuilder script
1248 - Issue #841800: bundlebuilder now works with 'python -O'
1250 - Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
1251 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
1253 - Issue #5104: The socket module now raises OverflowError when 16-bit port and
1254 protocol numbers are supplied outside the allowed 0-65536 range on bind()
1255 and getservbyport().
1257 - Issue #999042: The Python compiler now handles explict global statements
1258 correctly (should be assigned using STORE_GLOBAL opcode).
1260 - Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
1261 new arguments introduced in 2.5.
1263 - Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
1264 makeunicodedata.py and regenerated the Unicode database (This fixes
1265 u'\u1d79'.lower() == '\x00').
1267 - Windows locale mapping updated to Vista.
1272 - Ttk demos added in Demo/tkinter/ttk/
1274 - Issue #4677: add two list comprehension tests to pybench.
1279 - Add 2 new options to ``--with-universal-archs`` on MacOSX:
1280 ``intel`` builds a distribution with ``i386`` and ``x86_64`` architectures,
1281 while ``3-way`` builds a distribution with the ``ppc``, ``i386``
1282 and ``x86_64`` architectures.
1284 - Issue #6802: Fix build issues on MacOSX 10.6
1286 - Issue #6244: Allow detect_tkinter to look for Tcl/Tk 8.6.
1288 - Issue 5390: Add uninstall icon independent of whether file
1289 extensions are installed.
1291 - Issue 5809: Specifying both --enable-framework and --enable-shared is
1292 an error. Configure now explicity tells you about this.
1294 - Issue #3585: Add pkg-config support. It creates a python-2.7.pc file
1295 and a python.pc symlink in the $(LIBDIR)/pkgconfig directory. Patch by
1298 - Issue #6094: Build correctly with Subversion 1.7.
1300 - Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
1302 - Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
1303 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
1305 - Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
1306 the order that backends for the dbm extension are checked.
1308 - Link the shared python library with $(MODLIBS).
1310 - Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
1312 - Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
1314 - Issue #4895: Use _strdup on Windows CE.
1316 - Issue #4472: "configure --enable-shared" now works on OSX
1318 - Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
1320 - Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
1322 - Issue #4289: Remove Cancel button from AdvancedDlg.
1324 - Issue #1656675: Register a drop handler for .py* files on Windows.
1326 - Issue #4120: Exclude manifest from extension modules in VS2008.
1328 - Issue #4091: Install pythonxy.dll in system32 again.
1330 - Issue #4018: Disable "for me" installations on Vista.
1332 - Issue #3758: Add ``patchcheck`` build target to .PHONY.
1334 - Issue #4204: Fixed module build errors on FreeBSD 4.
1339 - Issue #6556: Fixed the Distutils configuration files location explanation
1342 - Issue #6801 : symmetric_difference_update also accepts |.
1343 Thanks to Carl Chenet.
1348 - Issue #6624: PyArg_ParseTuple with "s" format when parsing argument with
1349 NULL: Bogus TypeError detail string.
1351 - Issue #5954: Add a PyFrame_GetLineNumber() function to replace most uses of
1354 - Issue #5959: Add a PyCode_NewEmpty() function to create a new empty code
1355 object at a specified file, function, and line number.
1357 - Issue #1419652: Change the first argument to PyImport_AppendInittab() to
1358 ``const char *`` as the string is stored beyond the call.
1360 - Some PyBytes_* aliases have been removed because they don't exist in 3.x.
1362 - Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
1363 for negative arguments. Previously, it raised TypeError.
1365 - Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
1367 - Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
1368 the GIL is released, or owned by another thread.
1370 - Issue #4122: On Windows, fix a compilation error when using the
1371 Py_UNICODE_ISSPACE macro in an extension module.
1373 - Issue #4293: Py_AddPendingCall is now thread safe and can be used for
1374 asynchronous notifications to python from any thread. Documentation added.
1379 - Issue #7078: Set struct.__doc__ from _struct.__doc__.
1381 - Issue #3366: Add gamma function to math module.
1383 - Issue #6823: Allow time.strftime() to accept a tuple with a isdst field
1384 outside of the range of [-1, 1] by normalizing the value to within that
1387 - Issue #6877: Make it possible to link the readline extension to libedit
1390 - Issue #6944: Fix a SystemError when socket.getnameinfo() was called
1391 with something other than a tuple as first argument.
1393 - Issue #6865: Fix reference counting issue in the initialization of the pwd
1396 - Issue #6848: Fix curses module build failure on OS X 10.6.
1398 - Fix a segfault in expat when given a specially crafted input lead to the
1399 tokenizer not stopping.
1401 - Issue #6561: '\d' in a regex now matches only characters with
1402 Unicode category 'Nd' (Number, Decimal Digit). Previously it also
1403 matched characters with category 'No'.
1405 - Issue #1523: Remove deprecated overflow wrapping for struct.pack
1406 with an integer format code ('bBhHiIlLqQ'). Packing an out-of-range
1407 integer now consistently raises struct.error.
1409 - Issues #1530559, #1741130: Fix various struct.pack inconsistencies
1410 for the integer formats ('bBhHiIlLqQ'). In the following, '*'
1411 represents any of '=', '<', '>'.
1413 - Packing a float now always gives a Deprecation Warning.
1414 Previously it only warned for 'I', 'L', '*B', '*H', '*I', '*L'.
1416 - If x is not an int, long or float, then packing x will always
1417 result in struct.error. Previously an x with an __int__ method
1418 could be packed by 'b', 'B', 'h', 'H', 'i', 'l', '*b', '*h'
1419 ,'*i', '*l', and an x with a __long__ method could be packed by
1420 'q', 'Q', '*q', '*Q'; for x with neither __int__ nor __long__,
1421 TypeError used to be raised (with a confusing error message) for
1422 'I', 'L', '*B', '*H', '*I', '*L', and struct.error in other cases.
1424 - Issue #4873: Fix resource leaks in error cases of pwd and grp.
1426 - Issue #4751: For hashlib algorithms provided by OpenSSL, the Python
1427 GIL is now released during computation on data lengths >= 2048 bytes.
1429 - Issue #3745: Fix hashlib to always reject unicode and non buffer-api
1430 supporting objects as input no matter how it was compiled (built in
1431 implementations or external openssl library).
1433 - Issue #4397: Fix occasional test_socket failure on OS X.
1435 - Issue #4279: Fix build of parsermodule under Cygwin.
1437 - Issue #4051: Prevent conflict of UNICODE macros in cPickle.
1439 - Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
1441 - Issue #1040026: Fix os.times result on systems where HZ is incorrect.
1443 - Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
1446 - Issue #4365: Add crtassem.h constants to the msvcrt module.
1448 - Issue #4396: The parser module now correctly validates the with statement.
1450 - Issue #5228: Make functools.partial objects can now be pickled.
1455 - Issue #7055: test___all__ now greedily detects all modules which have an
1456 __all__ attribute, rather than using a hardcoded and incomplete list.
1458 - Issue #7058: Added save/restore for argv and os.environ to runtest_inner
1459 in regrtest, with warnings if the called test modifies them.
1461 - Issue #7042: Fix test_signal (test_itimer_virtual) failure on OS X 10.6.
1463 - Issue #6806: test_platform failed under OS X 10.6.0 because ``sw_ver`` leaves
1464 off the trailing 0 in the version number.
1466 - Issue #5450: Moved tests involving loading tk from Lib/test/test_tcl to
1467 Lib/lib-tk/test/test_tkinter/test_loadtk. With this, these tests demonstrate
1468 the same behaviour as test_ttkguionly (and now also test_tk) which is to
1469 skip the tests if DISPLAY is defined but can't be used.
1471 - Issue #6152: New option '-j'/'--multiprocess' for regrtest allows running
1472 regression tests in parallel, shortening the total runtime.
1474 - Issue #5354: New test support function import_fresh_module() makes
1475 it easy to import both normal and optimised versions of modules.
1476 test_heapq and test_warnings have been adjusted to use it, tests for
1477 other modules with both C and Python implementations in the stdlib
1478 can be adjusted to use it over time.
1480 - Fix test_warnings to no longer reset the warnings filter.
1482 - Fix test_logging to no longer reset the warnings filter.
1484 - Issue #5635: Fix running test_sys with tracing enabled.
1486 - regrtest no longer treats ImportError as equivalent to SkipTest. Imports
1487 that should cause a test to be skipped are now done using import_module
1488 from test support, which does the conversion.
1490 - Issue #5083: New 'gui' resource for regrtest.
1492 - Issue #5837: Certain sequences of calls to set() and unset() for
1493 support.EnvironmentVarGuard objects restored the environment variables
1494 incorrectly on __exit__.
1496 - Issue #2389: Array objects are now pickled in a portable manner.
1499 What's New in Python 2.6 final
1500 ==============================
1502 *Release date: 01-Oct-2008*
1507 - Issue #3967: Fixed a crash in the count() and find() methods of string-like
1508 objects, when the "start" parameter is a huge value.
1510 - Issue #3965: Fixed a crash on Windows when open() is given an invalid
1511 filename or mode, and the filename is a unicode string.
1513 - Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
1518 - Issue #3965: Allow repeated calls to turtle.Screen, by making it a
1519 true singleton object.
1521 - Issue #3895: It was possible to crash the interpreter when an external timer
1522 was used with cProfile that returned an object that could not be converted
1525 - Issue #3950: Made turtle respect scale factors.
1527 - Issue #3547: Fixed ctypes structures bitfields of varying integer
1530 - Issue #3879: A regression in urllib.getproxies_enviroment was fixed.
1532 - Issue #3863: Disabled a unit test of fork being called from a thread
1533 when running on platforms known to exhibit OS bugs when attempting that.
1538 - Bug #3989: Package the 2to3 script (as 2to3.py) in the Windows
1541 - Bug #3887: Package x64 version of CRT for AMD64 Windows binaries.
1544 What's New in Python 2.6 release candidate 2?
1545 =============================================
1547 *Release date: 17-Sep-2008*
1555 - Security Issue #2: imageop did not validate arguments correctly and could
1556 segfault as a result.
1558 - Issue #3886: Possible integer overflows in the _hashopenssl module were
1564 - Issue #3850: recursion tests in Misc/find_recursion_limit.py can raise
1565 AttributeError instead of RuntimeError, depending in which C API call
1566 exactly the recursion limit is exceeded. Consequently, both exception types
1567 are caught and silenced.
1572 - Issue #3617: Include a licensing statement regarding the Microsoft
1573 C runtime in the Windows installer.
1576 What's New in Python 2.6 release candidate 1?
1577 =============================================
1579 *Release date: 12-Sep-2008*
1584 - Issue #3642: Suppress warning in obmalloc when size_t is larger than uint.
1586 - Issue #3743: In a few places, PY_FORMAT_SIZE_T was incorrectly used with
1587 PyString_FromFormat or PyErr_Format to display size_t values. The macro
1588 PY_FORMAT_SIZE_T is designed to select the correct format for the OS
1589 ``printf`` function, whereas PyString_FromFormat has an independent
1590 implementation and uses "%zd" on all platforms for size_t values.
1591 This makes a difference on win64, where ``printf`` needs "%Id" to display
1594 - Issue #3634: _weakref.ref(Exception).__init__() gave invalid return value on
1597 - Issue #3777: long() applied to a float object now always return a long
1598 object; previously an int would be returned for small values. the __long__
1599 method is allowed to return either an int or a long, but the behaviour of
1600 float objects should not change to respect backward compatibility.
1602 - Issue #3751: str.rpartition would perform a left-partition when called with
1605 - Issue #3683: Fix compilation when --without-threads is given.
1607 - Issue #3668: Fix a memory leak with the "s*" argument parser in
1608 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
1609 was correctly parsed but parsing of subsequent arguments failed.
1611 - Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
1612 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
1613 mechanism. In the process, fix a bug where isinstance() and issubclass(),
1614 when given a tuple of classes as second argument, were looking up
1615 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
1618 - Fix crashes on memory allocation failure found with failmalloc.
1620 - Fix memory leaks found with valgrind and update suppressions file.
1622 - Fix compiler warnings in opt mode which would lead to invalid memory reads.
1624 - Fix problem using wrong name in decimal module reported by pychecker.
1626 - Silenced another compiler warning about a used but not defined
1627 function 'stringlib_contains_obj'.
1629 - Added warnings on the use of ``__getslice__``, ``__setslice__``, or
1632 - Issue #3678: Correctly pass LDFLAGS and LDLAST to the linker on shared
1633 library targets in the Makefile.
1635 - Issue #1204: The configure script now tests for additional libraries
1636 that may be required when linking against readline. This fixes issues
1637 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
1642 - Aliased PyObject_Bytes to PyObject_Str.
1647 - Issue #3640: Pickling a list or a dict uses less local variables, to reduce
1648 stack usage in the case of deeply nested objects.
1650 - Issue #3629: Fix sre "bytecode" validator for an end case.
1652 - Issue #3811: The Unicode database was updated to 5.1.
1654 - Issue #3781: Further warnings.catch_warnings() cleanup to prevent
1655 silent misbehaviour when a single instance is nested in multiple
1656 with statements, or when the methods are invoked in the wrong order.
1658 - Issue #3809: Fixed spurious 'test.blah' file left behind by test_logging.
1660 - Issue #3781: Clean up the API for warnings.catch_warnings() by having it
1661 return a list or None rather than a custom object.
1663 - Issue #1638033: Cookie.Morsel gained the httponly attribute.
1665 - Issue #3535: zipfile couldn't read some zip files larger than 2GB.
1667 - Issue #3776: Deprecate the bsddb package for removal in 3.0.
1669 - Issue #3762: platform.architecture() fails if python is lanched via
1672 - Issue #3772: Fixed regression problem in StreamHandler.emit().
1674 - Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
1675 to the urlparse one. Added a PendingDeprecationWarning in the old
1676 module, it will be deprecated in the future.
1678 - Issue #2562: Fix distutils PKG-INFO writing logic to allow having
1679 non-ascii characters and Unicode in setup.py meta-data.
1681 - Issue #3726: Allow spaces in separators in logging configuration files.
1683 - Issue #3719: platform.architecture() fails if there are spaces in the
1684 path to the Python binary.
1686 - Issue 3602: Moved test.test_support.catch_warning() to
1687 warnings.catch_warnings() along with some API cleanup. Expanding the tests
1688 for catch_warnings() also led to an improvement in the raising of a
1689 DeprecationWarning related to warnings.warn_explicit().
1691 - The deprecation warnings for the old camelCase threading API were removed.
1693 - logging: fixed lack of use of encoding attribute specified on a stream.
1695 - Silenced a trivial compiler warning in the sqlite module.
1697 - Fixed two format strings in the _collections module.
1699 - Issue #3703: _fileio.FileIO gave unhelpful error message when trying to open a
1702 - Issue #3708: os.urandom no longer goes into an infinite loop when passed a
1703 non-integer floating point number.
1705 - Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
1711 - Issue #4301: Patch the logging module to add processName support, remove
1712 _check_logger_class from multiprocessing.
1714 - Issue #2975: When compiling several extension modules with Visual Studio 2008
1715 from the same python interpreter, some environment variables would grow
1718 - Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
1719 exploitation of poor argument checking.
1721 - sqlite3: Changed docstring of iterdump() to mark method as "Non-standard".
1723 - Issue #3103: Reduced globals symbols used by sqlite3 module and made sure all
1724 remaining ones have "pysqlite_" prefix.
1726 - Issue #3846: Release the GIL during sqlite3_prepare calls. This improves
1727 concurrent access to the same SQLite database from multiple
1733 - Issue #3781: Add test.test_support.check_warnings() as a convenience
1734 wrapper for warnings.catch_warnings() that makes it easier to check
1735 that expected warning messages are being reported.
1737 - Issue #3796: Some tests functions were not enabled in test_float.
1739 - Issue #3768: Move test_py3kwarn over to the new API for catch_warnings().
1744 - Issue #3833: Use a different upgrade code for Win64 installers.
1746 - Issue #2271: Set SecureCustomProperties so that installation will properly
1747 use the TARGETDIR even for unprivileged users.
1749 - Allow passing the MSI file name to merge.py.
1751 - Issue #3758: Rename the 'check' target to 'patchcheck' so as to not clash
1752 with GNU build target guidelines.
1755 What's New in Python 2.6 beta 3?
1756 ================================
1758 *Release date: 20-Aug-2008*
1763 - Issue #1878: Remove Py_TPFLAGS_HAVE_VERSION_TAG from
1764 Py_TPFLAGS_DEFAULT when not building the core. This means 3rd party
1765 extensions do not automatically benefit from the class attribute
1766 cache; they will have to explicitly add Py_TPFLAGS_HAVE_VERSION_TAG
1767 to their tp_flags field if they care. This is a backwards
1768 compatibility feature; in 3.0, all types will use the cache by
1771 - Keyword arguments can now follow starred arguments. (``f(a, *args,
1772 keyword=23)`` is now valid syntax.)
1774 - ctypes function pointers that are COM methods have a boolean True
1777 - Issue #3139: Make buffer-interface thread-safe wrt. PyArg_ParseTuple,
1778 by denying s# to parse objects that have a releasebuffer procedure,
1781 - Issue #3537: Fix an assertion failure when an empty but presized dict
1782 object was stored in the freelist.
1784 - Issue #1481296: Make long(float('nan')) and int(float('nan')) raise
1785 ValueError consistently across platforms.
1787 - Issue #3479: On platforms where sizeof(int) is smaller than sizeof(long)
1788 (64bit Unix, for example), unichr() would truncate its argument and return
1789 u'\x00' for unichr(2**32). Now it properly raises an OverflowError.
1791 - Apply security patches from Apple.
1793 - Issue #2542: Now that issubclass() may call arbitrary code, ensure that
1794 PyErr_ExceptionMatches returns 0 when an exception occurs there.
1796 - Issue #1819: function calls with several named parameters are now on
1797 average 35% faster (as measured by pybench).
1799 - Issue #2378: An unexpected UnboundLocalError or NameError could appear when
1800 the python debugger steps into a class statement: the free variables (local
1801 variables defined in an outer scope) would be deleted from the outer scope.
1803 - Issue #2620: Overflow checking when allocating or reallocating memory
1804 was not always being done properly in some python types and extension
1805 modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
1806 all been updated to perform better checks and places in the code that
1807 would previously leak memory on the error path when such an allocation
1808 failed have been fixed.
1813 - Issue #3612: Added some missing basic types in ctypes.wintypes.
1815 - The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
1816 symtable.Symbol have been deprecated for removal in 3.0 and the next release.
1818 - Issue #2234: distutils failed for some versions of the cygwin compiler. The
1819 version reported by these tools does not necessarily follow the python
1820 version numbering scheme, so the module is less strict when parsing it.
1822 - Issue #2235: Added Py3k warnings for types which will become unhashable
1823 under the stricter __hash__ inheritance rules in 3.0. Several types
1824 which did not meet the rules for hash invariants and were already
1825 unhashable in 3.0 have now been explicitly flagged as unhashable in
1826 2.6 as well (collections.Mapping, collections.Set, unittest.TestSuite,
1827 xml.dom.minidom.NamedNodeMap, numbers.Number, UserList.UserList)
1829 - Update __all__ for cookielib, csv, os, urllib2, and weakref to include things
1830 imported into the module but exposed as part of the module's API.
1832 - Remove an unneeded import of abc.ABCMeta from 'inspect'.
1834 - Remove unneeded imports of 'sys' and 'warnings' from 'io'.
1836 - Remove unneeded imports of 'warnings' from shelve, filecmp, and dummy_thread.
1838 - Issue #3575: Incremental decoder's decode function now takes bytearray
1839 by using 's*' instead of 't#'.
1841 - Issue #2222: Fixed reference leak when occurred os.rename()
1842 fails unicode conversion on 2nd parameter. (windows only)
1844 - Issue 2464. urllib2 now supports a malformation in the URL received
1847 - Silence the DeprecationWarning raised when importing mimetools in
1848 BaseHTTPServer, cgi (and rfc822), httplib.
1850 - Issue #2776: fixed small issue when handling an URL with double slash
1851 after a 302 response in the case of not going through a proxy.
1853 - Issue #2676: in the email package, content-type parsing was hanging on
1854 pathological input because of quadratic or exponential behaviour of a
1857 - Issue #3476: binary buffered reading through the new "io" library is now
1860 - Silence the DeprecationWarning of rfc822 when it is imported by mimetools
1861 since mimetools itself is deprecated. Because modules are cached, all
1862 subsequent imports of rfc822 will not raise a visible DeprecationWarning.
1864 - Issue #3134: shutil referenced undefined WindowsError symbol.
1866 - Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
1867 menu entries were not deleted.
1869 - Copied the implementation of reduce() to _functools.reduce() to have a
1870 version that did not raise a DeprecationWarning under -3.
1872 - Issue #3205: When iterating over a BZ2File fails allocating memory, raise
1873 a MemoryError rather than silently stop the iteration.
1875 - Issue #3487: sre "bytecode" validator. Passing invalid "re-bytecode"
1876 to _sre.compile() will now be rejected. This should not affect anybody
1877 since the re.compile() function never generates invalid re-bytecode.
1879 - Issue #3436: Make csv.DictReader's fieldnames attribute a property so that
1880 upon first access it can be automatically initialized from the csv file if
1881 it wasn't initialized during instantiation.
1883 - Issue #2338: Create imp.reload() to help with transitioning to Python 3.0 as
1884 the reload() built-in has been removed.
1886 - Changed code in the following modules/packages to remove warnings raised
1887 while running under the ``-3`` flag: aifc, asynchat, asyncore, bdb, bsddb,
1888 ConfigParser, cookielib, csv, difflib, distutils, DocXMLRPCServer, email,
1889 filecmp, fileinput, inspect, logging, modulefinder, pdb, pickle, profile,
1890 pstats, pydoc, re, rlcompleter, SimpleXMLRPCServer, shelve, socket,
1891 subprocess, sqlite3, tarfile, Tkinter, test.test_support, textwrap,
1892 threading, tokenize, traceback, urlparse, wsgiref, xml, xmlrpclib.
1894 - Issue #3039: Fix tarfile.TarFileCompat.writestr() which always
1895 raised an AttributeError.
1897 - Issue #2523: Fix quadratic behaviour when read()ing a binary file without
1898 asking for a specific length. This problem only affected files opened
1899 using the new "io" module, not the built-in open() function.
1901 - Issue #3449: Update decimal module to use most recent specification
1902 (v. 1.68) and tests (v. 2.58) from IBM.
1904 - Issue 3437: Bug fix in robotparser parsing of Allow: lines.
1906 - Issue 1592: Improve error reporting when operations are attempted
1909 - Deprecate the "ast" parser function aliases.
1911 - Issue #3120: On 64-bit Windows the subprocess module was truncating handles.
1913 - Issue #3303: Fix a crash in locale.strcoll() when calling it with
1916 - Issue #3302: Fix several crashes when calling locale's gettext functions
1917 with None arguments.
1919 - Issue #3389: Allow resolving dotted names for handlers in logging
1920 configuration files.
1922 - Deprecate the sunaudio module for removal in Python 3.0.
1924 - Issue #3394: zipfile.writestr sets external attributes when passed a
1925 file name rather than a ZipInfo instance, so files are extracted with
1926 mode 0600 rather than 000 under Unix.
1928 - Issue #1857: subprocess.Popen.poll gained an additional _deadstate keyword
1929 argument in python 2.5, this broke code that subclassed Popen to include its
1930 own poll method. Fixed my moving _deadstate to an _internal_poll method.
1935 - Generate the PatternGrammar pickle during "make install".
1940 - Issue #2235: the C API function PyObject_HashNotImplemented and its
1941 interaction with the tp_hash slot (added in 2.6b2) are now documented
1943 - Issue #643841: The language reference now provides more detailed
1944 coverage of the lookup process for special methods. The disclaimers
1945 regarding lack of coverage of new-style classes have also been
1946 removed, since the coverage is now fairly reasonable.
1949 What's New in Python 2.6 beta 2?
1950 ================================
1952 *Release date: 17-Jul-2008*
1957 - Issue #3156: Fix inconsistent behavior of the bytearray type: all
1958 its methods now allow for items objects that can be converted to
1959 an integer using operator.index().
1961 - Issue #3360: Fix incorrect parsing of '020000000000.0', which
1962 produced a ValueError instead of giving the correct float.
1964 - Issue #3083: Add alternate (#) formatting for bin, oct, hex output
1965 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
1967 - Issue #3008: the float type has a new instance method 'float.hex'
1968 and a new class method 'float.fromhex' to convert floating-point
1969 numbers to and from hexadecimal strings, respectively.
1971 - Issue #2235: __hash__ is once again inherited by default. To allow
1972 collections.Hashable to remain meaningful in the presence of the
1973 default hash implementation (object.__hash__), it is now possible
1974 to explicit block inheritance of hash by setting __hash__=None at
1975 the Python level, or tp_hash=PyObject_HashNotImplemented at the C
1978 - Issue #3221: Issue a RuntimeWarning instead of raising SystemError if
1979 the parent module cannot be found while performing an absolute import.
1980 This means that an incorrectly defined __package__ attribute will
1981 now only prevent relative imports in that module rather than causing
1982 all imports from that module to fail.
1984 - Issue #2517: Allow unicode messages in Exceptions again by correctly
1985 bypassing the instance dictionary when looking up __unicode__ on
1988 - Issue #3242: Fix a crash inside the print statement, if sys.stdout is
1989 set to a custom object whose write() method happens to install
1990 another file in sys.stdout.
1992 - Issue #3088: Corrected a race condition in classes derived from
1993 threading.local: the first member set by a thread could be saved in
1994 another thread's dictionary.
1996 - Issue #3004: Minor change to slice.indices(): the start and stop
1997 arguments are now treated identically, making the behaviour easier
1998 to describe and understand. For example, slice(None, -10,
1999 1).indices(9) now returns (0, 0, 1) instead of (0, -1, 1), and
2000 slice(None, 10, -1).indices(10) returns (9, 9, -1) instead of (9,
2003 - Issue #3219: Calling a function with repeated keyword arguments,
2004 f(a=2, a=23), would not cause a syntax error. This was a regression
2005 from 2.4 caused by the switch to the new compiler.
2007 - Issue #2862: Make int and float freelist management consistent with
2008 other freelists. Changes their CompactFreeList apis into
2009 ClearFreeList apis and calls them via gc.collect().
2014 - Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
2015 api functions without holding the GIL, which could lead to a fatal
2016 error when they failed.
2018 - Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
2020 - Issue #3395: fix reference in test_multiprocessing to old debugInfo method
2022 - Issue #3312: Fix two crashes in sqlite3.
2024 - Issue #1608818: Fix misbehavior in os.listdir() if readdir() fails.
2026 - Issue #3125: Remove copy_reg in multiprocessing and replace it with
2027 ForkingPickler.register() to resolve conflict with ctypes.
2029 - Issue #3090: Fixed ARCHFLAGS parsing on OS/X
2031 - Issue #3313: Fixed a crash when a failed dlopen() call does not set
2032 a valid dlerror() message.
2034 - Issue #3258: Fixed a crash when a ctypes POINTER type to an
2035 incomplete structure was created.
2037 - Issue #3339: dummy_thread.acquire() should not return None.
2039 - Issue #3285: Fractions from_float() and from_decimal() accept Integral arguments.
2041 - Issue #3301: Bisect module behaved badly when lo was negative.
2043 - Issue #839496: SimpleHTTPServer used to open text files in text mode. This is
2044 both unnecessary (HTTP allows text content to be sent in several forms) and
2045 wrong because the actual transmitted size could differ from the
2046 content-length. The problem had been corrected in the 2.4 branch, but never
2049 - Issue #2663: add filtering capability to shutil.copytree().
2051 - Issue #1622: Correct interpretation of various ZIP header fields.
2053 - Issue #1526: Allow more than 64k files to be added to Zip64 file.
2055 - Issue #1746: Correct handling of zipfile archive comments (previously
2056 archives with comments over 4k were flagged as invalid). Allow writing
2057 Zip files with archives by setting the 'comment' attribute of a ZipFile.
2059 - Issue #449227: The rlcompleter module now adds "(" to callable objects
2062 - Issue #3190: Pydoc now hides the automatic module attribute __package__ (the
2063 handling is now the same as that of other special attributes like __name__).
2065 - Issue #2885 (partial): The urllib.urlopen() function has been deprecated for
2066 removal in Python 3.0 in favor of urllib2.urlopen().
2068 - Issue #2113: Fix error in subprocess.Popen if the select system call is
2069 interrupted by a signal.
2071 - Issue #3309: Fix bz2.BZFile iterator to release its internal lock
2072 properly when raising an exception due to the bz2file being closed.
2073 Prevents a deadlock.
2075 - Issue #3094: httplib.HTTPSConnection Host: headers no longer include the
2076 redundant ":443" port number designation when the connection is using the
2077 default https port (443).
2079 - Issue #874900: after an os.fork() call the threading module state is cleaned
2080 up in the child process to prevent deadlock and report proper thread counts
2081 if the new process uses the threading module.
2086 - test.test_support.catch_warning now keeps track of all warnings it sees
2087 and is now better documented. Explicit unit tests for this context manager
2088 have been added to test_warnings.
2093 - Issue #3215: Build sqlite3 as sqlite3.dll, not sqlite3.pyd.
2099 - Document that robotparser has been renamed to urllib.robotparser in
2102 - Document that urlparse has been renamed to urllib.parse in Python 3.0.
2104 - Document that urllib2 is split across multiple modules and renamed in
2107 - Document that urllib is split across multiple modules and renamed in
2111 What's New in Python 2.6 beta 1?
2112 ================================
2114 *Release date: 18-June-2008*
2119 - Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
2120 argument being anything other than a dict or None. Also fixed a bug in error
2121 handling when 'message' and 'category' were both set to None, triggering a
2124 - Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
2125 holds the last (strong) reference to its referent.
2127 - Add future_builtins.ascii().
2129 - Several set methods now accept multiple arguments: update(), union(),
2130 intersection(), intersection_update(), difference(), and difference_update().
2132 - Issue #2898: Added sys.getsizeof() to retrieve size of objects in bytes.
2134 - New environment variable PYTHONIOENCODING.
2136 - Patch #2488: Add sys.maxsize.
2138 - Issue #2353: file.xreadlines() now emits a Py3k warning.
2140 - Issue #2863: generators now have a ``gen.__name__`` attribute that
2141 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
2142 ``func.func_code.co_name``. The repr() of a generator now also
2145 - Issue #2831: enumerate() now has a ``start`` argument.
2147 - Issue #2801: fix bug in the float.is_integer method where a
2148 ValueError was sometimes incorrectly raised.
2150 - Issue #2790: sys.flags was not properly exposing its bytes_warning
2153 - Issue #2196: hasattr() now lets exceptions which do not inherit
2154 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
2157 - Added checks for integer overflows, contributed by Google. Some are
2158 only available if asserts are left in the code, in cases where they
2159 can't be triggered from Python code.
2164 - Issue #1179: [CVE-2007-4965] Integer overflow in imageop module.
2166 - Issue #3116: marshal.dumps() had quadratic behavior for strings > 32Mb.
2168 - Issue #2138: Add factorial() to the math module.
2170 - The heapq module does comparisons using LT instead of LE. This
2171 makes its implementation match that used by list.sort().
2173 - Issue #2819: add full-precision summation function to math module,
2174 based on Hettinger's ASPN Python Cookbook recipe.
2176 - Issue #2592: delegate nb_index and the floor/truediv slots in
2179 - Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
2182 - Support for Windows 9x has been removed from the winsound module.
2184 - bsddb module updated to version 4.7.3.
2185 http://www.jcea.es/programacion/pybsddb.htm#bsddb3-4.7.3. This
2186 code should be compatible with Python 3.0.
2188 - Issue #2858: Fix potential memory corruption when
2189 bsddb.db.DBEnv.lock_get and other bsddb.db object constructors
2190 raised an exception.
2192 - Issue #2669: bsddb/__init__.py iteration no longer silently fails when
2193 the database has changed size during iteration. It now raises a
2194 RuntimeError in the same manner as a dictionary.
2196 - Issue #2870: cmathmodule.c compile error.
2198 - Added a threading.Thread.ident property.
2203 - logging.config: Removed out-of-date comment in _install_handlers and
2204 used issubclass in place of equality comparison of classes.
2206 - Issue #2722: Now the os.getcwd() supports very long path names.
2208 - Issue #2888: Fixed the behaviour of pprint when working with nested
2209 structures, to match the behaviour of 2.5 and 3.0 (now follows the common
2212 - Issue #1817: cgi now correctly handles the querystring on POST requests
2214 - Issue #3136: fileConfig()'s disabling of old loggers is now conditional via
2215 an optional disable_existing_loggers parameter, but the default value is
2216 such that the old behaviour is preserved. Thanks to Leandro Lucarella for
2219 - Issue #3126: StreamHandler and FileHandler check before calling "flush" and
2220 "close" that the stream object has these, using hasattr (thanks to bobf for
2223 - Issue #2912: platform.uname now tries to determine unknown information even if
2226 - The rfc822 module has been deprecated for removal in 3.0.
2228 - The mimetools module has been deprecated for removal in 3.0.
2230 - The ctypes.byref function now takes an optional second parameter
2231 which allows to specify an offset in bytes for the constructed
2232 pointer-like object.
2234 - Added the ast module.
2236 - Added the multiprocessing module, PEP 371.
2238 - Factored out the indentation cleaning from inspect.getdoc() into
2239 inspect.cleandoc() to ease standalone use.
2241 - Issue #1798: Add ctypes calling convention that allows safe access
2244 - Issue #2404: ctypes objects support the new pep3118 buffer interface.
2246 - Patch #2125: Add GetInteger and GetString methods for
2247 msilib.Record objects.
2249 - Issue #2782: The datetime module's strftime methods now accept
2250 unicode format strings just as time.strftime always has.
2252 - The sgmllib and htmllib modules have been deprecated for removal
2255 - Issue #3011: locale module alias table was updated to the latest
2256 version from the X.org locale.alias file.
2258 - Issue #1797 (partial fix): ctypes NULL function pointers have a
2259 False boolean value now.
2261 - Issue #2985: Allow 64-bit integer responses (``<i8>``) in XMLRPC
2264 - Issue #2877: The UserString.MutableString class has been removed in
2267 - Do not close external file objects passed to tarfile.open(mode='w:bz2')
2268 when the TarFile is closed.
2270 - Issue #2959: For consistency with other file-like objects, gzip's
2271 GzipFile.close() can now be called multiple times without raising
2274 - Issue #1390: Raise ValueError in toxml when an invalid comment would
2275 otherwise be produced.
2277 - Issue #2914: TimedRotatingFileHandler now takes an optional keyword
2278 argument "utc" to use UTC time rather than local time.
2280 - Issue #2929: TimedRotatingFileHandler was using the wrong path when
2281 deleting old log files (filename only instead of full path).
2283 - Issue #1775025: You can now specify zipfile members to open(),
2284 read() or extract() via a ZipInfo instance. This allows handling
2285 duplicate filenames in zipfiles.
2287 - Issue #961805: Fix Text.edit_modified() in Tkinter.
2289 - Issue #1793: Function ctypes.util.find_msvcrt() added that returns
2290 the name of the C runtime library that Python uses.
2291 ctypes.util.find_library(name) now call this function when name is
2294 - The statvfs module has been deprecated for removal in Python 3.0.
2296 - The sunaudiodev and SUNAUDIODEV modules have been deprecated for
2297 removal in Python 3.0.
2299 - The WAIT module from IRIX has been deprecated for removal in Python
2302 - The torgb module from IRIX has been deprecated for removal in Python
2305 - The SV module from IRIX has been deprecated for removal in Python
2308 - The readcd module from IRIX has been deprecated for removal in
2311 - The panelparser module from IRIX has been deprecated for removal in
2314 - The panel module from IRIX has been deprecated for removal in Python
2317 - The jpeg module from IRIX has been deprecated for removal in Python
2320 - The IOCTL module from IRIX has been deprecated for removal in Python
2323 - The IN module from IRIX has been deprecated for removal in Python
2326 - The imgfile module from IRIX has been deprecated for removal in
2329 - The GLWS module from IRIX has been deprecated for removal in Python
2332 - The GET module from IRIX has been deprecated for removal in Python
2335 - The fm module from IRIX has been deprecated for removal in Python
2338 - The FL, flp, and fl modules from IRIX have been deprecated for
2339 removal in Python 3.0.
2341 - The FILE module on IRIX has been deprecated for removal in Python
2344 - The ERRNO module on IRIX has been deprecated for removal in Python
2347 - The DEVICE, GL, gl, and cgen modules (which indirectly includes
2348 cgensupport) have been deprecated for removal in Python 3.0.
2350 - The CL, CL_old, and cl modules for IRIX have been deprecated for
2351 removal in Python 3.0.
2353 - The cdplayer module for IRIX has been deprecated for removal in
2356 - The cddb module for IRIX has been deprecated for removal in Python
2359 - The cd and CD modules for IRIX have been deprecated for removal in
2362 - The al and AL modules for IRIX have been deprecated for removal in
2365 - Issue #1713041: fix pprint's handling of maximum depth.
2367 - The timing module has been deprecated for removal in Python 3.0.
2369 - The sv module has been deprecated for removal in Python 3.0.
2371 - The multifile module has been deprecated as per PEP 4.
2373 - The imageop module has been deprecated for removal in Python 3.0.
2375 - Issue #2250: Exceptions raised during evaluation of names in
2376 rlcompleter's ``Completer.complete()`` method are now caught and
2379 - Issue #2659: Added ``break_on_hyphens`` option to textwrap
2382 - The mhlib module has been deprecated for removal in Python 3.0.
2384 - The linuxaudiodev module has been deprecated for removal in Python
2387 - The ihooks module has been deprecated for removal in Python 3.0.
2389 - The fpformat module has been deprecated for removal in Python 3.0.
2391 - The dl module has been deprecated for removal in Python 3.0.
2393 - The Canvas module has been deprecated for removal in Python 3.0.
2395 - The compiler package has been deprecated for removal in Python 3.0.
2397 - The Bastion and rexec modules have been deprecated for removal in
2400 - The bsddb185 module has been deprecated for removal in Python 3.0.
2402 - The pure module has been deprecated for removal in Python 3.0.
2404 - Issue #2487: change the semantics of math.ldexp(x, n) when n is too
2405 large to fit in a C long. ldexp(x, n) now returns a zero (with
2406 suitable sign) if n is large and negative; previously, it raised
2409 - The toaiff module has been deprecated for removal in Python 3.0.
2411 - The test.testall module has been deprecated for removal in Python
2414 - The new module has been deprecated for removal in Python 3.0.
2416 - The user module has been deprecated for removal in Python 3.0.
2418 - The stringold module has been deprecated for removal in Python 3.0.
2420 - The mutex module has been deprecated for removal in Python 3.0.
2422 - The imputil module has been deprecated for removal in Python 3.0.
2424 - test.test_support.catch_warning() gained a 'record' argument.
2426 - os.path.walk is deprecated in favor of os.walk.
2428 - pdb gained the "until" command.
2430 - The Mac Modules (including Carbon) have been deprecated for removal
2433 - Library: on MacOS X you can now set ``ARCHFLAGS`` in the shell
2434 environment to control the '-arch' flags that are used to build
2435 an extension. This was added for compatibility with Apple's build
2438 - The bundled OSX-specific copy of libbffi is now in sync with the version
2439 shipped with PyObjC 2.0 and includes support for x86_64 and ppc64 platforms.
2441 - The threading module gained aliases for names that will be removed in the
2447 - The Windows installer now includes Tk 8.5, bzip2 1.0.5, and SQLite 3.5.9.
2449 - Patch #1722225: Support QNX 6.
2451 - ``Lib/lib-old`` is now added to sys.path.
2453 - On MacOS X it is now possible to install the framework in 64-bit
2454 mode or even as a 4-way universal binary (that is, PPC, i386,
2455 PPC64 and x86_64 support in one binary).
2457 This is controlled by the configure argument ``--with-universal-archs``:
2459 - ``--with-universal-archs=all``: install 4-way universal
2461 - ``--with-universal-archs=32-bit``: install 2-way universal, 32-bit (the default)
2463 - ``--with-universal-archs=64-bit``: install 2-way universal, 64-bit
2465 This option should be used in combination with ``--enable-universalsdk=``.
2467 NOTE: 64-bit and 4-way builds are only suppported on Mac OS X 10.5 (or later).
2473 - Add ``PyType_Modified()`` as a public API to clear the type cache.
2475 - The PyBytes functions have been renamed to PyByteArray.
2477 - The PyString functions have been renamed to PyBytes. A batch of
2478 defines were added so that the linker still sees the original
2482 What's New in Python 2.6 alpha 3?
2483 =================================
2485 *Release date: 08-May-2008*
2490 - Issue #2719: backported the ``next()`` builtin from Python 3.
2492 - Issue #2681: The octal literal ``0o8`` was incorrecly acctepted. Now
2493 it properly raises a SyntaxError.
2495 - Issue #2617: Reserved -J and -X arguments for Jython, IronPython and
2496 other implementations of Python.
2498 - Implemented PEP 370: Per user site-packages directory.
2503 - Issue #2670: Fix a failure in urllib2.build_opener(), when passed
2504 two handlers that derive the same default base class.
2506 - Added kill, terminate and send_signal(sig) to subprocess.Popen.
2508 - Added phase(z) -> phi, polar(z) -> r, phi and rect(r, phi) -> z to
2511 - Four new methods were added to the math and cmath modules: acosh,
2512 asinh, atanh and log1p.
2514 - zlib.decompressobj().flush(value) no longer crashes the interpreter
2515 when passed a value less than or equal to zero.
2517 - Issue #1631171: Re-implement the 'warnings' module in C (the
2518 original Python code has been kept as backup). This will allow for
2519 using the 'warning's machinery in such places as the parser where
2520 use of pure Python code is not possible. Both the ``showarning()``
2521 and ``formatwarning()`` gain an optional 'line' argument which is
2522 not called by default for backwards-compatibility reasons. Setting
2523 ``warnings.showwarning()`` to an implementation that lacks support
2524 for the ``line`` argument will raise a DeprecationWarning.
2529 - The audiodev module has been deprecated for removal in Python 3.0.
2531 - Issue #2750: Add the 'json' package. Based on simplejson 1.9 and
2532 contributed by Bob Ippolito.
2534 - Issue #1734346: Support Unicode file names for zipfiles.
2536 - Issue #2581: distutils: Vista UAC/elevation support for
2539 - Issue #2635: Fix bug in 'fix_sentence_endings' textwrap.fill option,
2540 where an extra space was added after a word containing (but not
2541 ending in) '.', '!' or '?'.
2543 - Add from_buffer() and from_buffer_copy() class methods to ctypes
2546 - Issue #2682: ctypes callback functions no longer contain a cyclic
2547 reference to themselves.
2549 - The getpass module has been improved on Unix. It now uses /dev/tty
2550 by default and uses stderr instead of stdout. A GetPassWarning is
2551 issued when input echo cannot be controlled.
2553 - Issue #2014: Allow XML-RPC datetime objects to have dates before
2556 - Issue #2439: Added new function pkgutil.get_data(), which is a
2557 convenience wrapper for the PEP 302 get_data() API.
2559 - Issue #2616: The ctypes.pointer() and ctypes.POINTER() functions are
2560 now implemented in C for better performance.
2562 - Issue #2408: The ``_types`` module, which was used as in
2563 implementation detail of the public ``types`` module, has been
2564 removed and replaced by pure python code.
2566 - Issue #2513: distutils on Windows is now capable of cross-compiling
2567 extension modules between 32 and 64 bit platforms. See the distutls
2568 build documentation for more information.
2570 - Issue #815646: Individual file objects may now be used from multiple
2571 threads at once without fear of crashing the Python interpreter. If
2572 file.close() is called while an object is in use by another thread
2573 an IOError exception will be raised and the file will not be closed.
2575 - The bundled libffi copy is now in sync with the recently released
2576 libffi3.0.5 version, apart from some small changes to
2577 Modules/_ctypes/libffi/configure.ac.
2579 - Issue #2385: distutils.core.run_script() makes __file__ available,
2580 so the controlled environment will more closely mirror the typical
2581 script environment. This supports setup.py scripts that refer to
2587 - Issue #2550: The approach used by client/server code for obtaining
2588 ports to listen on in network-oriented tests has been refined in an
2589 effort to facilitate running multiple instances of the entire
2590 regression test suite in parallel without issue.
2591 test_support.bind_port() has been fixed such that it will always
2592 return a unique port -- which wasn't always the case with the
2593 previous implementation, especially if socket options had been set
2594 that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The
2595 new implementation of bind_port() will actually raise an exception
2596 if it is passed an AF_INET/SOCK_STREAM socket with either the
2597 SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if
2598 available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on
2599 the socket it's been passed. This currently only applies to
2600 Windows. This option prevents any other sockets from binding to the
2601 host/port we've bound to, thus removing the possibility of the
2602 'non-deterministic' behaviour, as Microsoft puts it, that occurs
2603 when a second SOCK_STREAM socket binds and accepts to a host/port
2604 that's already been bound by another socket. The optional preferred
2605 port parameter to bind_port() has been removed. Under no
2606 circumstances should tests be hard coding ports!
2608 test_support.find_unused_port() has also been introduced, which will
2609 pass a temporary socket object to bind_port() in order to obtain an
2610 unused port. The temporary socket object is then closed and
2611 deleted, and the port is returned. This method should only be used
2612 for obtaining an unused port in order to pass to an external program
2613 (i.e. the -accept [port] argument to openssl's s_server mode) or as
2614 a parameter to a server-oriented class that doesn't give you direct
2615 access to the underlying socket used.
2617 Finally, test_support.HOST has been introduced, which should be used
2618 for the host argument of any relevant socket calls (i.e. bind and
2621 The following tests were updated to following the new conventions:
2622 test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib,
2623 test_poplib, test_ftplib, test_telnetlib, test_socketserver,
2624 test_asynchat and test_socket_ssl.
2626 It is now possible for multiple instances of the regression test
2627 suite to run in parallel without issue.
2632 - Issue #1496032: On alpha, use -mieee when gcc is the compiler.
2634 - Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
2635 gcc is used as compiler.
2637 - Issue #2573: On MacOS X it is now possible to install the framework
2638 with a different name using --with-framework-name=NAME.
2643 - Added implementation of copysign, acosh, asinh, atanh and log1p to
2644 the new files Include/pymath.h and Python/pymath.h for platforms
2645 which provide the functions through their libm. The files also
2646 contains several helpers and constants for math.
2648 - Added a new convenience macro, PyErr_WarnPy3k, for issuing Py3k warnings.
2651 What's New in Python 2.6 alpha 2?
2652 =================================
2654 *Release date: 02-Apr-2008*
2659 - Issue #1733757: The interpreter would hang on shutdown if the
2660 tracing function set by sys.settrace is still active and happens to
2661 call threading.currentThread().
2663 - Patch #1442: properly report exceptions when the PYTHONSTARTUP file
2666 - The compilation of a class nested in another class used to leak one
2667 reference on the outer class name.
2669 - Patch #1810: compile() can now compile _ast trees as returned by
2670 ``compile(..., PyCF_ONLY_AST)``.
2672 - Patch #2426: Added sqlite3.Connection.iterdump method to allow easy
2673 dumping of databases. Contributed by Paul Kippes at PyCon 2008.
2675 - Patch #2477: Added from __future__ import unicode_literals.
2677 - Added backport of bytearray type.
2679 - Issue #2355: add Py3k warning for buffer().
2681 - Issue #1477: With narrow Unicode builds, the unicode escape sequence
2682 \Uxxxxxxxx did not accept values outside the Basic Multilingual
2683 Plane. This affected raw unicode literals and the
2684 'raw-unicode-escape' codec. Now UTF-16 surrogates are generated in
2685 this case, like normal unicode literals and the 'unicode-escape'
2688 - Issue #2348: add Py3k warning for file.softspace.
2690 - Issue #2346/#2347: add Py3k warnings for __methods__ and
2693 - Issue #2358: Add a Py3k warning on sys.exc_clear() usage.
2695 - Issue #2400: Allow relative imports to "import *".
2697 - Issue #1745: Backport print function with ``from __future__ import
2700 - Issue #2332: add new attribute names for instance method objects.
2701 The two changes are: im_self -> __self__ and im_func -> __func__
2703 - Issue #2379: Raise a Py3K warning for __getitem__ or __getslice__ on
2704 exception instances.
2706 - Issue #2371: Add a Py3k warning when catching an exception that
2707 doesn't derive from BaseException.
2709 - Issue #2341: Add a Py3k warning when raising an exception that
2710 doesn't derive from BaseException.
2712 - Issue #2321: use pymalloc for unicode object string data to reduce
2713 memory usage in some circumstances.
2715 - PEP 3127: octal literals now start with "0o". Old-style octal
2716 literals are still valid. There are binary literals with a prefix of
2717 "0b". This also affects int(x, 0).
2719 - Issue #2359: Adding deprecation warnings for array.{read,write}.
2721 - Issue #1779871: GNU gcc can now build Python on OS X because the
2722 flags -Wno-long-double, -no-cpp-precomp, and -mno-fused-madd are no
2725 - Add a warning when asserting a non-empty tuple which is always true.
2727 - Issue #2179: speed up with statement execution by storing the exit
2728 method on the stack instead of in a temporary variable (patch by
2731 - Issue #2238: Some syntax errors in *args and **kwargs expressions
2732 could give bogus error messages.
2734 - Issue #2143: Fix embedded readline() hang on SSL socket EOF.
2739 - Patch #2240: Implement signal.setitimer and signal.getitimer.
2744 - Issue #2315: logging.handlers: TimedRotatingFileHandler now accounts
2745 for daylight savings time in calculating the next rollover.
2747 - Issue #2316: logging.handlers: TimedRotatingFileHandler now
2748 calculates rollovers correctly even when nothing is logged for a
2751 - Issue #2317: logging.handlers: TimedRotatingFileHandler now uses
2752 improved logic for removing old files.
2754 - Issue #2495: tokenize.untokenize now inserts a space between two
2755 consecutive string literals; previously, ["" ""] was rendered as
2756 [""""], which is incorrect python code.
2758 - Issue #2248: return the result of the QUIT command. from
2761 - Backport of Python 3.0's io module.
2763 - Issue #2482: Make sure that the coefficient of a Decimal is always
2764 stored as a str instance, not as a unicode instance. This ensures
2765 that str(Decimal) is always an instance of str.
2767 - Issue #2478: fix failure of decimal.Decimal(0).sqrt()
2769 - Issue #2432: give DictReader the dialect and line_num attributes
2770 advertised in the docs.
2772 - Issue #2460: Make Ellipsis object copyable.
2774 - Issue #1681432: Add triangular distribution to the random module
2776 - Issue #2136: urllib2's auth handler now allows single-quoted realms
2777 in the WWW-Authenticate header.
2779 - Issue #2434: Enhanced platform.win32_ver() to also work on Python
2780 installation which do not have the win32all package installed.
2782 - Added support to platform.uname() to also report the machine and
2783 processor information on Windows XP and later. As a result,
2784 platform.machine() and platform.processor() will report this
2785 information as well.
2787 - The library implementing the 2to3 conversion, lib2to3, was added to
2788 the standard distribution.
2790 - Issue #1747858: Fix chown to work with large uid's and gid's on
2793 - Issue #1202: zlib.crc32 and zlib.adler32 no longer return different
2794 values on 32-bit vs. 64-bit python interpreters. Both were correct,
2795 but they now both return a signed integer object for consistency.
2797 - Issue #1158: add %f format (fractions of a second represented as
2798 microseconds) to datetime objects. Understood by both strptime and
2801 - Issue #705836: struct.pack(">f", x) now raises OverflowError on all
2802 platforms when x is too large to fit into an IEEE 754 float;
2803 previously it only raised OverflowError on non IEEE 754 platforms.
2805 - Issues #2166, #1741 and #1531505: now distutils deals with HOME
2806 correctly under win32
2808 - Patch #1858: distutils: added multiple server support in .pypirc
2810 - Issue #1106316: pdb.post_mortem()'s parameter, "traceback", is now
2811 optional: it defaults to the traceback of the exception that is
2812 currently being handled (is mandatory to be in the middle of an
2813 exception, otherwise it raises ValueError).
2815 - Issue #1193577: A .shutdown() method has been added to SocketServers
2816 which terminates the .serve_forever() loop.
2818 - Issue #2220: handle rlcompleter attribute match failure more
2821 - Issue #2225: py_compile, when executed as a script, now returns a
2822 non- zero status code if not all files could be compiled
2825 - Bug #1725737: In distutils' sdist, exclude RCS, CVS etc. also in the
2826 root directory, and also exclude .hg, .git, .bzr, and _darcs.
2828 - Issue #1872: The struct module typecode for _Bool has been changed
2831 - The bundled libffi copy is now in sync with the recently released
2832 libffi3.0.4 version, apart from some small changes to
2833 Modules/_ctypes/libffi/configure.ac. On OS X, preconfigured libffi
2834 files are used. On all linux systems the --with-system-ffi
2835 configure option defaults to "yes".
2837 - Issue #1577: shutil.move() now calls os.rename() if the destination
2838 is a directory instead of copying-then-remove-source.
2843 - test_nis no longer fails when test.test_support.verbose is true and
2844 NIS is not set up on the testing machine.
2846 - Output comparison tests are no longer supported.
2848 - Rewrite test_errno to use unittest and no longer be a no-op.
2850 - GHOP 234: Convert test_extcall to doctest.
2852 - GHOP 290: Convert test_dbm and test_dummy_threading to unittest.
2854 - GHOP 293: Convert test_strftime, test_getargs, and test_pep247 to
2857 - Issue #2055: Convert test_fcntl to unittest.
2859 - Issue 1960: Convert test_gdbm to unittest.
2861 - GHOP 294: Convert test_contains, test_crypt, and test_select to
2864 - GHOP 238: Convert test_tokenize to use doctest.
2866 - GHOP 237: Rewrite test_thread using unittest.
2868 - Patch #2232: os.tmpfile might fail on Windows if the user has no
2869 permission to create files in the root directory.
2874 - A new script 2to3 is now installed, to run the 2.x to 3.x converter.
2876 - Python/memmove.c and Python/strerror.c have been removed; both
2877 functions are in the C89 standard library.
2879 - Patch #2284: Add -x64 option to rt.bat.
2884 - Patch #2477: Added PyParser_ParseFileFlagsEx() and
2885 PyParser_ParseStringFlagsFilenameEx().
2888 What's New in Python 2.6 alpha 1?
2889 =================================
2891 *Release date: 29-Feb-2008*
2896 - Issue #2051: pyc and pyo files are no longer created with permission
2897 644. The mode is now inherited from the py file.
2899 - Issue #2067: file.__exit__() now calls subclasses' close() method.
2901 - Patch #1759: Backport of PEP 3129 class decorators.
2903 - Issue #1881: An internal parser limit has been increased. Also see
2904 issue 215555 for a discussion.
2906 - Added the future_builtins module, which contains hex() and oct().
2907 These are the PEP 3127 version of these functions, designed to be
2908 compatible with the hex() and oct() builtins from Python 3.0. They
2909 differ slightly in their output formats from the existing, unchanged
2910 Python 2.6 builtins. The expected usage of the future_builtins
2912 from future_builtins import hex, oct
2914 - Issue #1600: Modifed PyOS_ascii_formatd to use at most 2 digit
2915 exponents for exponents with absolute value < 100. Follows C99
2916 standard. This is a change on Windows, which would use 3 digits.
2917 Also, added 'n' to the formats that PyOS_ascii_formatd understands,
2918 so that any alterations it does to the resulting string will be
2919 available in stringlib/formatter.h (for float.__format__).
2921 - Implemented PEP 3101, Advanced String Formatting. This adds a new
2922 builtin format(); a format() method for str and unicode; a
2923 __format__() method to object, str, unicode, int, long, float, and
2924 datetime; the class string.Formatter; and the C API
2927 - Fixed several potential crashes, all caused by specially crafted
2928 __del__ methods exploiting objects in temporarily inconsistent
2931 - Issue #2115: Important speedup in setting __slot__ attributes. Also
2932 prevent a possible crash: an Abstract Base Class would try to access
2933 a slot on a registered virtual subclass.
2935 - Fixed repr() and str() of complex numbers with infinity or nan as
2936 real or imaginary part.
2938 - Clear all free lists during a gc.collect() of the highest generation
2939 in order to allow pymalloc to free more arenas. Python may give back
2940 memory to the OS earlier.
2942 - Issue #2045: Fix an infinite recursion triggered when printing a
2943 subclass of collections.defaultdict, if its default_factory is set
2946 - Fixed a minor memory leak in dictobject.c. The content of the free
2947 list was not freed on interpreter shutdown.
2949 - Limit free list of method and builtin function objects to 256
2952 - Patch #1953: Added ``sys._compact_freelists()`` and the C API
2953 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
2954 to compact the internal free lists of pre-allocted ints and floats.
2956 - Issue #1983: Fixed return type of fork(), fork1() and forkpty()
2957 calls. Python expected the return type int but the fork familie
2960 - Issue #1678380: Fix a bug that identifies 0j and -0j when they
2961 appear in the same code unit.
2963 - Issue #2025: Add tuple.count() and tuple.index() methods to comply
2964 with the collections.Sequence API.
2966 - Patch #1970 by Antoine Pitrou: Speedup unicode whitespace and
2969 - Added ``PyType_ClearCache()`` and ``sys._clear_type_cache`` to clear
2970 the internal lookup cache for ref leak tests.
2972 - Patch #1473257: generator objects gain a gi_code attribute. This is
2973 the same object as the func_code attribute of the function that
2974 produced the generator.
2976 - Issue #1920: "while 0" statements were completely removed by the
2977 compiler, even in the presence of an "else" clause, which is
2978 supposed to be run when the condition is false. Now the compiler
2979 correctly emits bytecode for the "else" suite.
2981 - A few crashers fixed: weakref_in_del.py (issue #1377858);
2982 loosing_dict_ref.py (issue #1303614, test67.py);
2983 borrowed_ref_[34].py (not in tracker).
2985 - Issue #1069410: The "can't load dll" message box on Windows is
2986 suppressed while an extension is loaded by calling SetErrorMode in
2987 dynload_win.c. The error is still reported properly.
2989 - Issue #1915: Python compiles with --enable-unicode=no again. However
2990 several extension methods and modules do not work without unicode
2993 - Issue #1882: when compiling code from a string, encoding cookies in the
2994 second line of code were not always recognized correctly.
2996 - Issue #1679: "0x" was taken as a valid integer literal.
2998 - Issue #1865: ``bytes`` as an alias for ``str`` and b"" as an alias "" were
3001 - sys.float_info / PyFloat_GetInfo: The floating point information
3002 object was converted from a dict to a specialized structseq object.
3004 - Patch #1816: Added sys.flags structseq. It exposes the status of
3005 most command line arguments and PYTHON* environment variables.
3007 - Objects/structseq.c: Implemented new structseq representation. The
3008 patch makes structseqs (e.g. the return value of os.stat) more
3011 - Patch #1700288: added a type attribute cache that caches method
3012 accesses, resulting in speedups in heavily object-oriented code.
3014 - Bug #1776: __import__() no longer accepts filenames on any platform.
3015 The first parameter to __import__() must be a valid module name.
3017 - Patch #1668: renamed THREADDEBUG envvar to PYTHONTHREADDEBUG.
3019 - Patch #602345: Add -B command line option, PYTHONDONTWRITEBYTECODE
3020 envvar and sys.dont_write_bytecode attribute. All these can be set
3021 to forbid Python to attempt to write compiled bytecode files.
3023 - Improve some exception messages when Windows fails to load an
3024 extension module. Now we get for example '%1 is not a valid Win32
3025 application' instead of 'error code 193'.
3027 - Bug #1481296: Fixed long(float('nan')) != 0L.
3029 - Issue #1640: Added math.isinf(x), math.isnan(x) and math.copysign(x,
3032 - Issue #1635: Platform independent creation and representation of NaN
3033 and INF. float("nan"), float("inf") and float("-inf") now work on
3034 every platform with IEEE 754 semantics.
3036 - Compiler now generates simpler and faster code for dictionary
3037 literals. The oparg for BUILD_MAP now indicates an estimated
3038 dictionary size. There is a new opcode, STORE_MAP, for adding
3039 entries to the dictionary.
3041 - Issue #1638: %zd configure test fails on Linux.
3043 - Issue #1620: New property decorator syntax was modifying the
3044 decorator in place instead of creating a new decorator object.
3046 - Issue #1538: Avoid copying string in split/rsplit if the split char
3049 - Issue #1553: An erroneous __length_hint__ can make list() raise a
3052 - PEP 366: Allow explicit relative imports when executing modules
3053 inside packages with the -m switch via a new module level
3054 __package__ attribute.
3056 - Issue #1402: Fix a crash on exit, when another thread is still
3057 running, and if the deallocation of its frames somehow calls the
3058 PyGILState_Ensure() / PyGILState_Release() functions.
3060 - Expose the Py_Py3kWarningFlag as sys.py3kwarning.
3062 - Issue #1445: Fix a SystemError when accessing the ``cell_contents``
3063 attribute of an empty cell object.
3065 - Issue #1460: The utf-7 incremental decoder did not accept truncated
3066 input. It now correctly saves its state between chunks of data.
3068 - Patch #1739468: Directories and zipfiles containing a __main__.py
3069 file can now be directly executed by passing their name to the
3070 interpreter. The directory/zipfile is automatically inserted as the
3071 first entry in sys.path.
3073 - Issue #1265: Fix a problem with sys.settrace, if the tracing
3074 function uses a generator expression when at the same time the
3075 executed code is closing a paused generator.
3077 - sets and frozensets now have an isdisjoint() method.
3079 - optimize the performance of builtin.sum().
3081 - Fix warnings found by the new version of the Coverity checker.
3083 - The enumerate() builtin function is no longer bounded to sequences
3084 smaller than LONG_MAX. Formerly, it raised an OverflowError. Now,
3085 automatically shifts from ints to longs.
3087 - Issue #1686386: Tuple's tp_repr did not take into account the
3088 possibility of having a self-referential tuple, which is possible
3089 from C code. Nor did object's tp_str consider that a type's tp_str
3090 could do something that could lead to an inifinite recursion.
3091 Py_ReprEnter() and Py_EnterRecursiveCall(), respectively, fixed the
3094 - Issue #1164: It was possible to trigger deadlock when using the
3095 'print' statement to write to a file since the GIL was not released
3096 as needed. Now PyObject_Print() does the right thing along with
3097 various tp_print implementations of the built-in types and those in
3098 the collections module.
3100 - Issue #1147: Exceptions were directly allowing string exceptions in
3101 their throw() method even though string exceptions no longer
3104 - Issue #1096: Prevent a segfault from getting the repr of a very
3105 deeply nested list by using the recursion counter.
3107 - Issue #1202533: Fix infinite recursion calls triggered by calls to
3108 PyObject_Call() never calling back out to Python code to trigger
3109 recursion depth updates/checks. Required the creation of a static
3110 RuntimeError instance in case normalizing an exception put the
3111 recursion check value past its limit. Fixes crashers
3112 infinite_rec_(1|2|4|5).py.
3114 - Patch #1031213: Decode source line in SyntaxErrors back to its
3115 original source encoding.
3117 - Patch #1673759: add a missing overflow check when formatting floats
3120 - Prevent expandtabs() on string and unicode objects from causing a
3121 segfault when a large width is passed on 32-bit platforms.
3123 - Issue #1733488: Fix compilation of bufferobject.c on AIX.
3125 - Issue #1722485: remove docstrings again when running with -OO.
3127 - Add new attribute names for function objects. All the func_* become
3128 __*__ attributes. (Some already existed, e.g., __doc__ and
3131 - Add -3 option to the interpreter to warn about features that are
3132 deprecated and will be changed/removed in Python 3.0.
3134 - Patch #1686487: you can now pass any mapping after '**' in function
3137 - except clauses may now be spelled either "except E, target:" or
3138 "except E as target:". This is to provide forwards compatibility
3141 - Deprecate BaseException.message as per PEP 352.
3143 - Issue #1303614: don't expose object's __dict__ when the dict is
3144 inherited from a builtin base.
3146 - When __slots__ are set to a unicode string, make it work the same as
3147 setting a plain string, ie don't expand to single letter identifiers.
3149 - Request #1191699: Slices can now be pickled.
3151 - Request #1193128: str.translate() now allows a None argument for
3152 translations that only remove characters without re-mapping the
3153 remaining characters.
3155 - Patch #1682205: a TypeError while unpacking an iterable is no longer
3156 masked by a generic one with the message "unpack non-sequence".
3158 - Remove unused file Python/fmod.c.
3160 - Bug #1683368: The object.__init__() and object.__new__() methods are
3161 now stricter in rejecting excess arguments. The only time when
3162 either allows excess arguments is when it is not overridden and the
3163 other one is. For backwards compatibility, when both are
3164 overridden, it is a deprecation warning (for now; maybe a Py3k
3165 warning later). Also, type.__init__() insists on the same signature
3166 as supported by type.__new__().
3168 - Patch #1675423: PyComplex_AsCComplex() now tries to convert an
3169 object to complex using its __complex__() method before falling back
3170 to the __float__() method. Therefore, the functions in the cmath
3171 module now can operate on objects that define a __complex__()
3174 - Patch #1623563: allow __class__ assignment for classes with
3175 __slots__. The old and the new class are still required to have the
3178 - Patch #1642547: Fix an error/crash when encountering syntax errors
3179 in complex if statements.
3181 - Patch #1462488: Python no longer segfaults when
3182 ``object.__reduce_ex__()`` is called with an object that is faking
3185 - Patch #1680015: Don't modify __slots__ tuple if it contains an
3188 - Patch #1444529: the builtin compile() now accepts keyword arguments.
3190 - Bug #1678647: write a newline after printing an exception in any
3191 case, even when converting the value to a string failed.
3193 - The dir() function has been extended to call the __dir__() method on
3194 its argument, if it exists. If not, it will work like before. This
3195 allows customizing the output of dir() in the presence of a
3198 - Patch #922167: Python no longer segfaults when faced with infinitely
3199 self-recursive reload() calls (as reported by bug #742342).
3201 - Patch #1675981: remove unreachable code from ``type.__new__()``
3204 - Patch #1491866: change the complex() constructor to allow
3205 parthensized forms. This means complex(repr(x)) now works instead of
3206 raising a ValueError.
3208 - Patch #703779: unset __file__ in __main__ after running a file. This
3209 makes the filenames the warning module prints much more sensible
3210 when a PYTHONSTARTUP file is used.
3212 - Variant of patch #697613: don't exit the interpreter on a SystemExit
3213 exception if the -i command line option or PYTHONINSPECT environment
3214 variable is given, but break into the interactive interpreter just
3215 like on other exceptions or normal program exit.
3217 - Patch #1638879: don't accept strings with embedded NUL bytes in
3220 - Bug #1674503: close the file opened by execfile() in an error
3223 - Patch #1674228: when assigning a slice (old-style), check for the
3224 sq_ass_slice instead of the sq_slice slot.
3226 - When printing an unraisable error, don't print exceptions. before
3227 the name. This duplicates the behavior whening normally printing
3230 - Bug #1653736: Properly discard third argument to
3231 slot_nb_inplace_power.
3233 - PEP 352: Raising a string exception now triggers a TypeError.
3234 Attempting to catch a string exception raises DeprecationWarning.
3236 - Bug #1377858: Fix the segfaulting of the interpreter when an object
3237 created a weakref on itself during a __del__ call for new-style
3238 classes (classic classes still have the bug).
3240 - Bug #1579370: Make PyTraceBack_Here use the current thread, not the
3241 frame's thread state.
3243 - patch #1630975: Fix crash when replacing sys.stdout in
3246 - Prevent seg fault on shutdown which could occur if an object raised
3249 - Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, to
3250 avoid relying on atexit.
3252 - Bug #1590891: random.randrange don't return correct value for big
3255 - Patch #1586791: Better exception messages for some operations on
3256 strings, tuples and lists.
3258 - Bug #1067760: Deprecate passing floats to file.seek.
3260 - Bug #1591996: Correctly forward exception in instance_contains().
3262 - Bug #1588287: fix invalid assertion for `1,2` in debug builds.
3264 - Bug #1576657: when setting a KeyError for a tuple key, make sure
3265 that the tuple isn't used as the "exception arguments tuple".
3267 - Bug #1565514: SystemError not raised on too many nested blocks.
3269 - Bug #1576174: WindowsError now displays the windows error code
3270 again, no longer the posix error code.
3272 - Patch #1549049: Support long values in structmember, issue warnings
3273 if the assigned value for structmember fields gets truncated.
3275 - Update the peephole optimizer to remove more dead code (jumps after
3276 returns) and inline unconditional jumps to returns.
3278 - Bug #1545497: when given an explicit base, int() did ignore NULs
3279 embedded in the string to convert.
3281 - Bug #1569998: break inside a try statement (outside a loop) is now
3282 recognized and rejected.
3284 - list.pop(x) accepts any object x following the __index__ protocol.
3286 - A number of places, including integer negation and absolute value,
3287 were fixed to not rely on undefined behaviour of the C compiler
3290 - Bug #1566800: make sure that EnvironmentError can be called with any
3291 number of arguments, as was the case in Python 2.4.
3293 - Patch #1567691: super() and new.instancemethod() now don't accept
3294 keyword arguments any more (previously they accepted them, but
3297 - Fix a bug in the parser's future statement handling that led to
3298 "with" not being recognized as a keyword after, e.g., this
3299 statement: from __future__ import division, with_statement
3301 - Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).
3303 - Fix %zd string formatting on Mac OS X so it prints negative numbers.
3305 - Allow exception instances to be directly sliced again.
3307 - Bug #1551432: Exceptions do not define an explicit __unicode__
3308 method. This allows calling unicode() on exceptions classes
3309 directly to succeed.
3311 - Bug #1542051: Exceptions now correctly call PyObject_GC_UnTrack.
3312 Also make sure that every exception class has __module__ set to
3315 - Bug #1550983: emit better error messages for erroneous relative
3316 imports (if not in package and if beyond toplevel package).
3318 - Overflow checking code in integer division ran afoul of new gcc
3319 optimizations. Changed to be more standard-conforming.
3321 - Patch #1542451: disallow continue anywhere under a finally.
3323 - Patch #1546288: fix seg fault in dict_equal due to ref counting bug.
3325 - The return tuple from str.rpartition(sep) is (tail, sep, head) where
3326 head is the original string if sep was not found.
3328 - Bug #1520864: unpacking singleton tuples in list comprehensions and
3329 generator expressions (x for x, in ... ) works again. Fixing this
3330 problem required changing the .pyc magic number. This means that
3331 .pyc files generated before 2.5c2 will be regenerated.
3333 - ``with`` and ``as`` are now keywords.
3335 - Bug #1664966: Fix crash in exec if Unicode filename can't be
3338 - Issue #1537: Changed GeneratorExit's base class from Exception to
3341 - Issue #1703448: A joined thread could show up in the
3342 threading.enumerate() list after the join() for a brief period until
3349 - Patch #2274: Add heapq.heappushpop().
3351 - Add inspect.isabstract(object) to fix bug #2223
3353 - Add a __format__ method to Decimal, to support PEP 3101.
3355 - Add a timing parameter when using trace.Trace to print out
3358 - Issue #1627: httplib now ignores negative Content-Length headers.
3360 - Issue #900744: If an invalid chunked-encoding header is sent by a
3361 server, httplib will now raise IncompleteRead and close the
3362 connection instead of raising ValueError.
3364 - Issue #1492: The content type of BaseHTTPServer error messages can
3367 - Issue #1781: ConfigParser now does not let you add the "default" section
3370 - Removed uses of dict.has_key() from distutils, and uses of
3371 callable() from copy_reg.py, so the interpreter now starts up
3372 without warnings when '-3' is given. More work like this needs to
3373 be done in the rest of the stdlib.
3375 - Issue #1916: added isgenerator() and isgeneratorfunction() to
3378 - Issue #1224: Fixed bad url parsing when path begins with double
3381 - ctypes instances that are not or do not contain pointers can now be
3384 - Patch #1966: Break infinite loop in httplib when the servers
3385 implements the chunked encoding incorrectly.
3387 - Rename rational.py to fractions.py and the rational.Rational class
3388 to fractions.Fraction, to avoid the name clash with the abstract
3389 base class numbers.Rational. See discussion in issue #1682.
3391 - The pickletools module now provides an optimize() function that
3392 eliminates unused PUT opcodes from a pickle string.
3394 - Patch #2021: Allow tempfile.NamedTemporaryFile and
3395 SpooledTemporaryFile to be used in with statements by correctly
3396 supporting the context management protocol.
3398 - Patch #1979: Add rich comparisons to Decimal, and make Decimal
3399 comparisons involving a NaN follow the IEEE 754 standard.
3401 - Issue #2004: tarfile.py: Use mode 0700 for temporary directories and
3402 default permissions for missing directories.
3404 - Issue #175006: The debugger used to skip the condition of a "while"
3405 statement after the first iteration. Now it correctly steps on the
3406 expression, and breakpoints on the "while" statement are honored on
3409 - Issue #1765140: add an optional delay argument to FileHandler and
3410 its subclasses. Defaults to false (existing behaviour), but if true,
3411 defers opening the file until the first call to emit().
3413 - The pprint module now supports sets and frozensets.
3415 - Issue #1221598: add optional callbacks to ftplib.FTP's storbinary()
3416 and storlines() methods. (Contributed by Phil Schwartz)
3418 - Issue #1715: include sub-extension modules in pydoc's text output.
3420 - Issue #1836: fix an off-by-one bug in TimedRotatingHandler's
3421 rollover time calculation.
3423 - Issue #1021: fix a bug to allow basicConfig to accept NOTSET as a
3426 - Issue #932563: add LoggerAdapter convenience class to make it easier
3427 to add contextual information in logging output.
3429 - Issue #1760556: fix a bug to avoid FileHandler throwing an exception
3432 - Bug #1530959: distutils' build command now uses different build
3433 directory when building extension modules against versions of Python
3434 compiled with ``--with-pydebug``.
3436 - Issue #1555501: move plistlib from plat-mac directory to general
3439 - Issue #1269: fix a bug in pstats.add_callers() and add a unit test
3442 - Issue #1669: don't allow shutil.rmtree() to be called on a symlink
3445 - Issue #1664522: in urllib, don't read non-existing directories in
3446 ftp mode, returning a 0-byte file -- raise an IOError instead.
3448 - Issue #856047: respect the ``no_proxy`` environment variable when
3449 using the ``http_proxy`` etc. environment variables in urllib.
3451 - Issue #1178141: add a getcode() method to the addinfourls that
3452 urllib.open() returns so that you can retrieve the HTTP status code.
3454 - Issue #1003: Fix zipfile decryption check, it would fail zip files
3455 with extended local headers.
3457 - Issue #1189216: Fix the zipfile module to work on archives with
3458 headers past the 2**31 byte boundary.
3460 - Issue #1336: fix a race condition in subprocess.Popen if the garbage
3461 collector kicked in at the wrong time that would cause the process
3462 to hang when the child wrote to stderr.
3464 - Issue #1146: fix how textwrap breaks a long word that would start in
3465 the last column of a line.
3467 - Issue #1693149: trace.py --ignore-module - accept multiple
3468 comma-separated modules to be given.
3470 - Issue #1822: MIMEMultipart.is_multipart() behaves correctly for a
3471 just-created (and empty) instance. Thanks Jonathan Share.
3473 - Issue #1861: Added an attribute to the sched module which returns an
3474 ordered list of upcoming events (displayed as named tuples).
3476 - Issue #1837: The queue module now also supports a LIFO queue and a
3479 - Patch #1048820: Add insert-mode editing to curses.textpad.Textbox
3480 (patch by Stefan Wehr). Also, fix an off-by-one bug in
3483 - Issue #1831: ctypes now raises a TypeError if conflicting positional
3484 and named arguments are passed to a Structure or Union initializer.
3485 When too many positional arguments are passed, also a TypeError is
3486 raised instead of a ValueError.
3488 - Convert the internal ctypes array type cache to a WeakValueDict so
3489 that array types do not live longer than needed.
3491 - Issue #1786: pdb should use its own stdin/stdout around an exec call
3492 and when creating a recursive instance.
3494 - Issue #1698398: ZipFile.printdir() crashed because the format string
3495 expected a tuple type of length six instead of time.struct_time
3498 - Issue #1780: The Decimal constructor now accepts arbitrary leading
3499 and trailing whitespace when constructing from a string.
3500 Context.create_decimal no longer accepts trailing newlines.
3502 - Decimal.as_tuple(), difflib.find_longest_match() and inspect
3503 functions that returned a tuple now return a named tuple.
3505 - Doctest now returns results as a named tuple for readability:
3506 (0, 7) --> TestResults(failed=0, attempted=7)
3508 - Issue #846388:q re.match is interruptible now, which is particularly
3509 good for long regular expression matches.
3511 - Patch #1137: allow setting buffer_size attribute on pyexpat Parser
3512 objects to set the character data buffer size.
3514 - Issue #1757: The hash of a Decimal instance is no longer affected by
3515 the current context.
3517 - Patch #467924: add ZipFile.extract() and ZipFile.extractall() in the
3520 - Issue #1646: Make socket support the TIPC protocol.
3522 - Bug #1742: return os.curdir from os.path.relpath() if both arguments
3523 are equal instead of raising an exception.
3525 - Patch #1637: fix urlparse for URLs like 'http://x.com?arg=/foo'.
3527 - Patch #1698: allow '@' in username parsed by urlparse.py.
3529 - Issue #1735: TarFile.extractall() now correctly sets directory
3530 permissions and times.
3532 - Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a mountpoint.
3534 - Bug #1687: Fxed plistlib.py restricts <integer> to Python int when
3537 - Issue #1700: Regular expression inline flags incorrectly handle
3538 certain unicode characters.
3540 - Issue #1689: PEP 3141, numeric abstract base classes.
3542 - Tk issue #1851526: Return results from Python callbacks to Tcl as
3545 - Issue #1642: Fix segfault in ctypes when trying to delete attributes.
3547 - Issue #1727780: Support loading pickles of random.Random objects
3548 created on 32-bit systems on 64-bit systems, and vice versa. As a
3549 consequence of the change, Random pickles created by Python 2.6
3550 cannot be loaded in Python 2.5.
3552 - Issue #1455: The distutils package now supports VS 2005 and VS 2008
3553 for both the msvccompiler and cygwincompiler.
3555 - Issue #1531: tarfile.py: Read fileobj from the current offset, do
3556 not seek to the start.
3558 - Issue #1534: Added a dictionary sys.float_info with information
3559 about the internal floating point type to the sys module.
3561 - Issue #1429818: patch for trace and doctest modules so they play
3564 - doctest made a bad assumption that a package's __loader__.get_data()
3565 method used universal newlines.
3567 - Issue #1705170: contextlib.contextmanager was still swallowing
3568 StopIteration in some cases. This should no longer happen.
3570 - Issue #1292: On alpha, arm, ppc, and s390 linux systems the
3571 --with-system-ffi configure option defaults to "yes".
3573 - IN module for FreeBSD 8 is added and preexisting FreeBSD 6 and 7
3576 - Issues #1181, #1287: unsetenv() is now called when the
3577 os.environ.pop() and os.environ.clear() methods are used.
3579 - ctypes will now work correctly on 32-bit systems when Python is
3580 configured with --with-system-ffi.
3582 - Patch #1203: ctypes now does work on OS X when Python is built with
3583 --disable-toolbox-glue.
3585 - collections.deque() now supports a "maxlen" argument.
3587 - itertools.count() is no longer bounded to LONG_MAX. Formerly, it
3588 raised an OverflowError. Now, automatically shifts from ints to
3591 - Added itertools.product() which forms the Cartesian product of the
3594 - Added itertools.combinations() and itertools.permutations().
3596 - Patch #1541463: optimize performance of cgi.FieldStorage operations.
3598 - Decimal is fully updated to the latest Decimal Specification
3601 - Bug #1153: repr.repr() now doesn't require set and dictionary items
3602 to be orderable to properly represent them.
3604 - A 'c_longdouble' type was added to the ctypes module.
3606 - Bug #1709599: Run test_1565150 only if the file system is NTFS.
3608 - When encountering a password-protected robots.txt file the
3609 RobotFileParser no longer prompts interactively for a username and
3610 password (bug 813986).
3612 - TarFile.__init__() no longer fails if no name argument is passed and
3613 the fileobj argument has no usable name attribute (e.g. StringIO).
3615 - The functools module now provides 'reduce', for forward
3616 compatibility with Python 3000.
3618 - Server-side SSL support and cert verification added, by Bill
3621 - socket.ssl deprecated; use new ssl module instead.
3623 - uuid creation is now threadsafe.
3625 - EUC-KR codec now handles the cheot-ga-keut composed make-up hangul
3628 - GB18030 codec now can encode additional two-byte characters that are
3631 - Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
3633 - Bug #1704793: Return UTF-16 pair if unicodedata.lookup cannot
3634 represent the result in a single character.
3636 - Bug #978833: Close https sockets by releasing the _ssl object.
3638 - Change location of the package index to pypi.python.org/pypi
3640 - Bug #1701409: Fix a segfault in printing ctypes.c_char_p and
3641 ctypes.c_wchar_p when they point to an invalid location. As a
3642 sideeffect the representation of these instances has changed.
3644 - tarfile.py: Added "exclude" keyword argument to TarFile.add().
3646 - Bug #1734723: Fix repr.Repr() so it doesn't ignore the maxtuple
3649 - The urlopen function of urllib2 now has an optional timeout
3650 parameter (note that it actually works with HTTP, HTTPS, FTP and
3653 - In ftplib, the FTP.ntransfercmd method, when in passive mode, now
3654 uses the socket.create_connection function, using the timeout
3655 specified at connection time.
3657 - Bug #1728403: Fix a bug that CJKCodecs StreamReader hangs when it
3658 reads a file that ends with incomplete sequence and sizehint
3659 argument for .read() is specified.
3661 - Bug #1730389: Change time.strptime() to use ``\s+`` instead of
3662 ``\s*`` when matching spaces in the specified format argument.
3664 - Bugs #1668596/#1720897: distutils now copies data files even if
3665 package_dir is empty.
3667 - sha now raises a DeprecationWarning upon import.
3669 - md5 now raises a DeprecationWarning upon import.
3671 - Issue #1385: The hmac module now computes the correct hmac when
3672 using hashes with a block size other than 64 bytes (such as sha384
3675 - mimify now raises a DeprecationWarning upon import.
3677 - MimeWriter now raises a DeprecationWarning upon import.
3679 - tarfile.py: Improved unicode support. Unicode input names are now
3680 officially supported. Added "errors" argument to the TarFile class.
3682 - urllib.ftpwrapper class now accepts an optional timeout.
3684 - shlex.split() now has an optional "posix" parameter.
3686 - The posixfile module now raises a DeprecationWarning.
3688 - Remove the gopherlib module. This also leads to the removal of
3689 gopher support in urllib/urllib2.
3691 - Fix bug in marshal where bad data would cause a segfault due to lack
3692 of an infinite recursion check.
3694 - Removed plat-freebsd2 and plat-freebsd3 directories (and IN.py in
3697 - HTML-escape the plain traceback in cgitb's HTML output, to prevent
3698 the traceback inadvertently or maliciously closing the comment and
3699 injecting HTML into the error page.
3701 - The popen2 module and os.popen* are deprecated. Use the subprocess
3704 - Added an optional credentials argument to SMTPHandler, for use with
3705 SMTP servers which require authentication.
3707 - Patch #1695948: Added optional timeout parameter to SocketHandler.
3709 - Bug #1652788: Minor fix for currentframe.
3711 - Patch #1598415: Added WatchedFileHandler to better support external
3712 log file rotation using e.g. newsyslog or logrotate. This handler is
3713 only useful in Unix/Linux environments.
3715 - Bug #1706381: Specifying the SWIG option "-c++" in the setup.py file
3716 (as opposed to the command line) will now write file names ending in
3719 - As specified in RFC 2616, an HTTP response like 2xx indicates that
3720 the client's request was successfully received, understood, and
3721 accepted. Now in these cases no error is raised in urllib (issue
3724 - Bug #1290505: time.strptime's internal cache of locale information
3725 is now properly recreated when the locale is changed.
3727 - Patch #1685563: remove (don't add) duplicate paths in
3728 distutils.MSVCCompiler.
3730 - Added a timeout parameter to the constructor of other protocols
3731 (telnetlib, ftplib, smtplib and poplib). This is second part of the
3732 work started with create_connection() and timeout in httplib, and
3733 closes patch #723312.
3735 - Patch #1676823: Added create_connection() to socket.py, which may be
3736 called with a timeout, and use it from httplib (whose HTTPConnection
3737 and HTTPSConnection now accept an optional timeout).
3739 - Bug #978833: Revert r50844, as it broke _socketobject.dup.
3741 - Bug #1675967: re patterns pickled with Python 2.4 and earlier can
3742 now be unpickled with Python 2.5 and newer.
3744 - Patch #1630118: add a SpooledTemporaryFile class to tempfile.py.
3746 - Patch #1273829: os.walk() now has a "followlinks" parameter. If set
3747 to True (which is not the default), it visits symlinks pointing to
3750 - Bug #1681228: the webbrowser module now correctly uses the default
3751 GNOME or KDE browser, depending on whether there is a session of one
3752 of those present. Also, it tries the Windows default browser before
3753 trying Mozilla variants.
3755 - Patch #1339796: add a relpath() function to os.path.
3757 - Patch #1681153: the wave module now closes a file object it opened if
3758 initialization failed.
3760 - Bug #767111: fix long-standing bug in urllib which caused an
3761 AttributeError instead of an IOError when the server's response
3762 didn't contain a valid HTTP status line.
3764 - Patch #957650: "%var%" environment variable references are now
3765 properly expanded in ntpath.expandvars(), also "~user" home
3766 directory references are recognized and handled on Windows.
3768 - Patch #1429539: pdb now correctly initializes the __main__ module
3769 for the debugged script, which means that imports from __main__ work
3772 - The nonobvious commands.getstatus() function is now deprecated.
3774 - Patch #1393667: pdb now has a "run" command which restarts the
3775 debugged Python program, optionally with different arguments.
3777 - Patch #1649190: Adding support for _Bool to ctypes as c_bool.
3779 - Patch #1530482: add pydoc.render_doc() which returns the
3780 documentation for a thing instead of paging it to stdout, which
3783 - Patch #1533909: the timeit module now accepts callables in addition
3784 to strings for the code to time and the setup code. Also added two
3785 convenience functions for instantiating a Timer and calling its
3788 - Patch #1537850: tempfile.NamedTemporaryFile now has a "delete"
3789 parameter which can be set to False to prevent the default
3790 delete-on-close behavior.
3792 - Patch #1581073: add a flag to textwrap that prevents the dropping of
3793 whitespace while wrapping.
3795 - Patch #1603688: ConfigParser.SafeConfigParser now checks values that
3796 are set for invalid interpolation sequences that would lead to
3797 errors on reading back those values.
3799 - Added support for the POSIX.1-2001 (pax) format to
3800 tarfile.py. Extended and cleaned up the test suite. Added a new
3803 - Patch #1449244: Support Unicode strings in
3804 email.message.Message.{set_charset,get_content_charset}.
3806 - Patch #1542681: add entries for "with", "as" and "CONTEXTMANAGERS"
3807 to pydoc's help keywords.
3809 - Patch #1555098: use str.join() instead of repeated string
3810 concatenation in robotparser.
3812 - Patch #1635454: the csv.DictWriter class now includes the offending
3813 field names in its exception message if you try to write a record
3814 with a dictionary containing fields not in the CSV field names list.
3816 - Patch #1668100: urllib2 now correctly raises URLError instead of
3817 OSError if accessing a local file via the file:// protocol fails.
3819 - Patch #1677862: Require a space or tab after import in .pth files.
3821 - Patch #1192590: Fix pdb's "ignore" and "condition" commands so they
3822 trap the IndexError caused by passing in an invalid breakpoint
3825 - Patch #1599845: Add an option to disable the implicit calls to
3826 server_bind() and server_activate() in the constructors for
3827 TCPServer, SimpleXMLRPCServer and DocXMLRPCServer.
3829 - Bug #1531963: Make SocketServer.TCPServer's server_address always be
3830 equal to calling getsockname() on the server's socket. Fixed by
3833 - Patch #742598: Add .timeout attribute to SocketServer that calls
3834 .handle_timeout() when no requests are received.
3836 - Bug #1651235: When a tuple was passed to a ctypes function call,
3837 Python would crash instead of raising an error.
3839 - Bug #1646630: ctypes.string_at(buf, 0) and ctypes.wstring_at(buf, 0)
3840 returned string up to the first NUL character.
3842 - Patch #957003: Implement smtplib.LMTP.
3844 - Patch #1481079: add support for HTTP_REFERER to CGIHTTPServer.
3846 - Patch #1675424: Added tests for uncovered code in the zipfile
3847 module. The KeyError raised by Zipfile.getinfo for nonexistent
3848 names now has a descriptive message.
3850 - Bug #1115886: os.path.splitext('.cshrc') gives now ('.cshrc', '').
3852 - unittest now verifies more of its assumptions. In particular,
3853 TestCase and TestSuite subclasses (not instances) are no longer
3854 accepted in TestSuite.addTest(). This should cause no
3855 incompatibility since it never made sense with ordinary subclasses
3856 -- the failure just occurred later, with a more cumbersome
3859 - Patch #787789: allow to pass custom TestRunner instances to
3860 unittest's main() function.
3862 - Patches #1550273, #1550272: fix a few bugs in unittest and add a
3863 comprehensive test suite for the module.
3865 - Patch #1001604: glob.glob() now returns unicode filenames if it was
3866 given a unicode argument and os.listdir() returns unicode filenames.
3868 - Patch #1673619: setup.py identifies extension modules it doesn't
3869 know how to build and those it knows how to build but that fail to
3872 - Patch #912410: Replace HTML entity references for attribute values
3875 - Patch #1663234: you can now run doctest on test files and modules
3876 using "python -m doctest [-v] filename ...".
3878 - Patch #1121142: Implement ZipFile.open.
3880 - Taught setup.py how to locate Berkeley DB on Macs using MacPorts.
3882 - Added heapq.merge() for merging sorted input streams.
3884 - Added collections.namedtuple() for assigning field names to tuples.
3886 - Added itertools.izip_longest().
3888 - Have the encoding package's search function dynamically import using
3889 absolute import semantics.
3891 - Patch #1647484: Renamed GzipFile's filename attribute to name.
3893 - Patch #1517891: Mode 'a' for ZipFile now creates the file if it
3896 - Patch #698833: Support file decryption in zipfile.
3898 - Patch #685268: Consider a package's __path__ in imputil.
3900 - Patch #1463026: Support default namespace in XMLGenerator.
3902 - Patch #1571379: Make trace's --ignore-dir facility work in the face
3903 of relative directory names.
3905 - Bug #1600860: Search for shared python library in LIBDIR, not
3906 lib/python/config, on "linux" and "gnu" systems.
3908 - Patch #1652681: tarfile.py: create nonexistent files in append mode
3909 and allow appending to empty files.
3911 - Bug #1124861: Automatically create pipes if GetStdHandle fails in
3914 - Patch #1634778: add missing encoding aliases for iso8859_15 and
3917 - Patch #1638243: the compiler package is now able to correctly
3918 compile a with statement; previously, executing code containing a
3919 with statement compiled by the compiler package crashed the
3922 - Bug #1643943: Fix time.strptime's support for the %U directive.
3924 - Patch #1507247: tarfile.py: use current umask for intermediate
3927 - Patch #1627441: close sockets properly in urllib2.
3929 - Bug #494589: make ntpath.expandvars behave according to its
3932 - Changed platform module API python_version_tuple() to actually
3933 return a tuple (it used to return a list).
3935 - Added new platform module APIs python_branch(), python_revision(),
3936 python_implementation() and linux_distribution().
3938 - Added support for IronPython and Jython to the platform module.
3940 - The sets module has been deprecated. Use the built-in set/frozenset
3943 - Bug #1610795: make ctypes.util.find_library work on BSD systems.
3945 - Fixes for 64-bit Windows: In ctypes.wintypes, correct the
3946 definitions of HANDLE, WPARAM, LPARAM data types. Make
3947 parameterless foreign function calls work.
3949 - The version number of the ctypes package changed to "1.1.0".
3951 - Bug #1627575: logging: Added _open() method to FileHandler which can
3952 be used to reopen files. The FileHandler instance now saves the
3953 encoding (which can be None) in an attribute called "encoding".
3955 - Bug #411881: logging.handlers: bare except clause removed from
3956 SMTPHandler.emit. Now, only ImportError is trapped.
3958 - Bug #411881: logging.handlers: bare except clause removed from
3959 SocketHandler.createSocket. Now, only socket.error is trapped.
3961 - Bug #411881: logging: bare except clause removed from
3962 LogRecord.__init__. Now, only ValueError, TypeError and
3963 AttributeError are trapped.
3965 - Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj
3968 - Patch #1182394 from Shane Holloway: speed up HMAC.hexdigest.
3970 - Patch #1262036: Prevent TarFiles from being added to themselves
3971 under certain conditions.
3973 - Patch #1230446: tarfile.py: fix ExFileObject so that read() and
3974 tell() work correctly together with readline().
3976 - Patch #1484695: The tarfile module now raises a HeaderError
3977 exception if a buffer given to frombuf() is invalid.
3979 - Bug #1503765: Fix a problem in logging.config with spaces in comma-
3980 separated lists read from logging config files.
3982 - Patch #1604907: Fix problems in logging.handlers caused at logging
3983 shutdown when syslog handlers fail to initialize because of syslogd
3986 - Patch #1608267: fix a race condition in os.makedirs() if the
3987 directory to be created is already there.
3989 - Patch #1610437: fix a tarfile bug with long filename headers.
3991 - Patch #1371075: Make ConfigParser accept optional dict type for
3992 ordering, sorting, etc.
3994 - Bug #1563807: _ctypes built on AIX fails with ld ffi error.
3996 - Bug #1598620: A ctypes Structure cannot contain itself.
3998 - Patch #1070046: Marshal new-style objects like InstanceType in
4001 - cStringIO.truncate(-1) now raises an IOError, like StringIO and
4004 - Patch #1472877: Fix Tix subwidget name resolution.
4006 - Patch #1594554: Always close a tkSimpleDialog on ok(), even if an
4009 - Patch #1538878: Don't make tkSimpleDialog dialogs transient if the
4010 parent window is withdrawn.
4012 - Bug #1597824: return the registered function from atexit.register()
4013 to facilitate usage as a decorator.
4015 - Patch #1360200: Use unmangled_version RPM spec field to deal with
4018 - Patch #1359217: Process 2xx response in an ftplib transfer that
4019 precedes an 1xx response.
4021 - Patch #1355023: support whence argument for GzipFile.seek.
4023 - Patch #1065257: Support passing open files as body in
4024 HTTPConnection.request().
4026 - Bug #1569790: mailbox.py: Maildir.get_folder() and MH.get_folder()
4027 weren't passing the message factory on to newly created Maildir/MH
4030 - Patch #1514543: mailbox.py: In the Maildir class, report errors if
4031 there's a filename clash instead of possibly losing a message.
4032 (Patch by David Watson.)
4034 - Patch #1514544: Try to ensure that messages/indexes have been
4035 physically written to disk after calling .flush() or
4036 .close(). (Patch by David Watson.)
4038 - Patch #1592250: Add elide argument to Tkinter.Text.search.
4040 - Patch #838546: Make terminal become controlling in pty.fork().
4042 - Patch #1351744: Add askyesnocancel helper for tkMessageBox.
4044 - Patch #1060577: Extract list of RPM files from spec file in
4047 - Bug #1586613: fix zlib and bz2 codecs' incremental en/decoders.
4049 - Patch #1583880: fix tarfile's problems with long names and posix/
4052 - Bug #1586448: the compiler module now emits the same bytecode for
4053 list comprehensions as the builtin compiler, using the LIST_APPEND
4056 - Fix codecs.EncodedFile which did not use file_encoding in 2.5.0, and
4057 fix all codecs file wrappers to work correctly with the "with"
4058 statement (bug #1586513).
4060 - Lib/modulefinder.py now handles absolute and relative imports
4063 - Patch #1567274: Support SMTP over TLS.
4065 - Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that ctypes
4066 isn't considered as requiring executable stacks.
4068 - ctypes callback functions only support 'fundamental' data types as
4069 result type. Raise an error when something else is used. This is a
4070 partial fix for Bug #1574584.
4072 - Fix turtle so that time.sleep is imported for the entire library.
4073 Allows the demo2 function to be executed on its own instead of only
4074 when the module is run as a script.
4076 - Bug #813342: Start the IDLE subprocess with -Qnew if the parent is
4077 started with that option.
4079 - Bug #1565150: Fix subsecond processing for os.utime on Windows.
4081 - Support for MSVC 8 was added to bdist_wininst.
4083 - Bug #1446043: correctly raise a LookupError if an encoding name
4084 given to encodings.search_function() contains a dot.
4086 - Bug #1560617: in pyclbr, return full module name not only for
4087 classes, but also for functions.
4089 - Bug #1457823: cgi.(Sv)FormContentDict's constructor now takes
4090 keep_blank_values and strict_parsing keyword arguments.
4092 - Bug #1566602: correct failure of posixpath unittest when $HOME ends
4095 - Bug #1565661: in webbrowser, split() the command for the default
4096 GNOME browser in case it is a command with args.
4098 - Made the error message for time.strptime when the data and
4099 format do match be more clear.
4101 - Fix a bug in traceback.format_exception_only() that led to an error
4102 being raised when print_exc() was called without an exception set.
4103 In version 2.4, this printed "None", restored that behavior.
4105 - Make webbrowser.BackgroundBrowser usable in Windows (it wasn't
4106 because the close_fds arg to subprocess.Popen is not supported).
4108 - Reverted patch #1504333 to sgmllib because it introduced an infinite
4111 - Patch #1553314: Fix the inspect.py slowdown that was hurting IPython
4112 & SAGE by adding smarter caching in inspect.getmodule()
4114 - Fix missing import of the types module in logging.config.
4116 - Patch #1550886: Fix decimal module context management implementation
4117 to match the localcontext() example from PEP 343.
4119 - Bug #1545341: The 'classifier' keyword argument to the Distutils
4120 setup() function now accepts tuples as well as lists.
4122 - Bug #1541863: uuid.uuid1 failed to generate unique identifiers on
4123 systems with low clock resolution.
4125 - Bug #1531862: Do not close standard file descriptors in subprocess.
4127 - idle: Honor the "Cancel" action in the save dialog (Debian bug
4130 - Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
4131 the first chunk fed to the decoder started with a BOM, but was
4132 longer than 3 bytes.
4134 - The implementation of UnicodeError objects has been simplified
4135 (start and end attributes are now stored directly as Py_ssize_t
4138 - Issue #829951: In the smtplib module, SMTP.starttls() now complies
4139 with RFC 3207 and forgets any knowledge obtained from the server not
4140 obtained from the TLS negotiation itself. Patch contributed by Bill
4143 - Issue #1339: The smtplib.SMTP class has been refactored a bit such
4144 that the SMTP.starttls() caller no longer needs to call ehlo()
4145 beforehand. SMTP.starttls() now raises an exception of the server
4146 does not claim to support starttls. Adds the
4147 SMTP.ehlo_or_helo_if_needed() method. Patch contributed by Bill
4150 - Patch #1089358: Add signal.siginterrupt, a wrapper around
4156 - Patch #1657: added select.epoll and select.kqueue.
4158 - Patch #1506171: added operator.methodcaller().
4160 - Patch #1826: operator.attrgetter() now supports dotted attribute paths.
4162 - Patch #1957: syslogmodule: Release GIL when calling syslog(3).
4164 - Bug #2112: mmap.error is now a subclass of EnvironmentError and not
4165 a direct EnvironmentError.
4167 - Bug #2111: mmap segfaults when trying to write a block opened with
4170 - Bug #2063: correct order of utime and stime in os.times() result on
4173 - Patch #1736: Fix file name handling of _msi.FCICreate.
4175 - Updated ``big5hkscs`` codec to the HKSCS revision of 2004.
4177 - Issue #1940: make it possible to use curses.filter() before
4178 curses.initscr() as the documentation says.
4180 - Backport of _fileio module from Python 3.0.
4182 - Patch #1087741: mmap.mmap is now a class, not a factory function. It
4183 is also subclassable now.
4185 - Patch #1648: added ``sys.getprofile()`` and ``sys.gettrace()``.
4187 - Patch #1663329: added ``os.closerange()`` function to quickly close
4188 a range of file descriptors without considering errors.
4190 - Patch #976880: ``mmap`` objects now have an ``rfind`` method that
4191 works as expected. ``mmap.find`` also takes an optional ``end``
4194 - _winreg's HKEY object has gained __enter__ and __exit__ methods to
4195 support the context manager protocol. The _winreg module also
4196 gained a new function ``ExpandEnvironmentStrings`` to expand
4199 - itertools.starmap() now accepts any iterable input. Previously, it
4200 required the function inputs to be tuples.
4202 - itertools.chain() now has an alternate constructor,
4203 chain.from_iterable().
4205 - Issue #1646: Make socket support TIPC. The socket module now has
4206 support for TIPC under Linux, see http://tipc.sf.net/ for more
4209 - Added interface for Windows' WSAIoctl to socket object and added an
4210 example for a simple network sniffer.
4212 - Bug #1301: Bad assert in _tkinter fixed.
4214 - Added bdist_wininst executable for VS 2008.
4216 - Bug #1604: collections.deque.__init__(iterable) now clears any prior
4217 contents before adding elements from the iterable. This fix brings
4218 the behavior into line with that for list.__init__().
4220 - Added wide char functions to msvcrt module: getwch, getwche, putwch
4221 and ungetwch. The functions accept or return unicode.
4223 - os.access now returns True on Windows for any existing directory.
4225 - Added warnpy3k function to the warnings module.
4227 - Marshal.dumps() now expects exact type matches for int, long, float,
4228 complex, tuple, list, dict, set, and frozenset. Formerly, it would
4229 silently miscode subclasses of those types. Now, it raises a
4232 - Patch #1388440: Add set_completion_display_matches_hook and
4233 get_completion_type to readline.
4235 - Bug #1649098: Avoid declaration of zero-sized array declaration in
4238 - Removed the rgbimg module; been deprecated since Python 2.5.
4240 - Bug #1721309: prevent bsddb module from freeing random memory.
4242 - Bug #1233: fix bsddb.dbshelve.DBShelf append method to work as
4243 intended for RECNO databases.
4245 - pybsddb.sf.net Bug #477182: Load the database flags at database open
4246 time so that opening a database previously created with the DB_DUP
4247 or DB_DUPSORT flag set will keep the proper behavior on subsequent
4248 opens. Specifically: dictionary assignment to a DB object will
4249 replace all values for a given key when the database allows
4250 duplicate values. DB users should use DB.put(k, v) when they want
4251 to store duplicates; not DB[k] = v.
4253 - Add the bsddb.db.DBEnv.lock_id_free method.
4255 - Bug #1686475: Support stat'ing open files on Windows again.
4257 - Patch #1185447: binascii.b2a_qp() now correctly quotes binary
4258 characters with ASCII value less than 32. Also, it correctly quotes
4259 dots only if they occur on a single line, as opposed to the previous
4260 behavior of quoting dots if they are the second character of any
4263 - Bug #1622896: fix a rare corner case where the bz2 module raised an
4264 error in spite of a succesful compression.
4266 - Patch #1654417: make operator.{get,set,del}slice use the full range
4269 - Patch #1646728: datetime.fromtimestamp fails with negative
4270 fractional times. With unittest.
4272 - Patch #1490190: posixmodule now includes os.chflags() and
4273 os.lchflags() functions on platforms where the underlying system
4274 calls are available.
4276 - Patch #1494140: Add documentation for the new struct.Struct object.
4278 - Patch #1432399: Support the HCI protocol for bluetooth sockets
4280 - Patch #1657276: Make NETLINK_DNRTMSG conditional.
4282 - Bug #1653736: Complain about keyword arguments to time.isoformat.
4284 - Bug #1486663: don't reject keyword arguments for subclasses of
4287 - Patch #1610575: The struct module now supports the 't' code, for C99
4290 - Patch #1635058: ensure that htonl and friends never accept or return
4291 negative numbers, per the underlying C implementation.
4293 - Patch #1544279: Improve thread-safety of the socket module by moving
4294 the sock_addr_t storage out of the socket object.
4296 - Patch #1019808: fix bug that causes an incorrect error to be
4297 returned when a socket timeout is set and a connection attempt
4300 - Speed up function calls into the math module.
4302 - Bug #1588217: don't parse "= " as a soft line break in binascii's
4303 a2b_qp() function, instead leave it in the string as quopri.decode()
4306 - Bug #1599782: Fix segfault on bsddb.db.DB().type().
4308 - Bug #1567666: Emulate GetFileAttributesExA for Win95.
4310 - Patch #1576166: Support os.utime for directories on Windows NT+.
4312 - Patch #1572724: fix typo ('=' instead of '==') in _msi.c.
4314 - Bug #1572832: fix a bug in ISO-2022 codecs which may cause segfault
4315 when encoding non-BMP unicode characters.
4317 - Bug #1556784: allow format strings longer than 127 characters in
4318 datetime's strftime function.
4320 - Fix itertools.count(n) to work with negative numbers again.
4322 - RLIMIT_SBSIZE was added to the resource module where available.
4324 - Bug #1551427: fix a wrong NULL pointer check in the win32 version of
4327 - Bug #1548092: fix curses.tparm seg fault on invalid input.
4329 - Patch #1114: fix curses module compilation on 64-bit AIX, & possibly
4330 other 64-bit LP64 platforms where attr_t is not the same size as a
4331 long. (Contributed by Luke Mewburn.)
4333 - Bug #1550714: fix SystemError from itertools.tee on negative value
4336 - Fixed a few bugs on cjkcodecs:
4337 - gbk and gb18030 codec now handle U+30FB KATAKANA MIDDLE DOT
4339 - iso2022_jp_2 codec now encodes into G0 for KS X 1001, GB2312
4340 codepoints to conform the standard.
4341 - iso2022_jp_3 and iso2022_jp_2004 codec can encode JIS X 0213:2
4344 - Bug #1552726: in readline.c, avoid repeatedly polling in interactive
4345 mode by only placing a timeout on the select() if an input hook has
4346 been defined. This prevents an interactive Python from waking up 10
4347 times per second. Patch by Richard Boulton.
4349 - fixed a bug with bsddb.DB.stat: the flags and txn keyword arguments
4352 - Added support for linking the bsddb module against BerkeleyDB 4.5.x,
4355 - Bug #1633621: if curses.resizeterm() or curses.resize_term() is
4356 called, update _curses.LINES, _curses.COLS, curses.LINES and
4359 - Fix an off-by-one bug in locale.strxfrm().
4361 - Fix libffi configure for hppa*-*-linux* | parisc*-*-linux*.
4363 - Build using system ffi library on arm*-linux*.
4365 - Bug #1372: zlibmodule.c: int overflow in PyZlib_decompress
4367 - bsddb module: Fix memory leak when using database cursors on
4368 databases without a DBEnv.
4370 - The sqlite3 module was updated to pysqlite 2.4.1.
4375 - Refactor test_logging to use unittest.
4377 - Refactor test_profile and test_cprofile to use the same code to
4380 - Make test_runpy reentrant by fixing _check_module to clear out any
4381 module being tested. Was causing an error by __import__ doing a
4382 reload on the second run and thus suppressing bytecode recreation.
4384 - Capture socket connection resets and timeouts in test_socket_ssl and
4385 test_urllib2net and raise test.test_support.ResourceDenied.
4387 - Patch #1559413: Fix test_cmd_line if sys.executable contains a
4390 - Added test.test_support.TransientResource which is a context manager
4391 to surround calls to resources that are not guaranteed to work even
4392 if test.test_support.requires says that the resource should exist.
4394 - Added a test for slicing of an exception.
4396 - Added test.test_support.EnvironmentVarGuard. It's a class that
4397 provides a context manager so that one can temporarily set or unset
4398 environment variables.
4400 - Added some tests for modulefinder.
4402 - Converted test_imp to use unittest.
4404 - Fix bsddb test_basics.test06_Transactions to check the version
4407 - test.test_support.catch_warning is a new context manager that can be
4408 used to catch the warnings issued by the warning framework.
4413 - Tools/scripts/reindent.py now creates the backup file using
4414 shutil.copy to preserve user/group and permissions. Added also a
4415 --nobackup option to not create the backup if the user is concerned
4416 regarding this. Check issue 1050828 for more details.
4418 - Tools/scripts/win_add2path.py was added. The simple script modifes
4419 the PATH environment var of the HKCU tree and adds the python bin
4420 and script directory.
4422 - Tools/18n/pygettext.py was added to the list of scripts installed by
4423 Tools/scripts/setup.py (tracker item 642309).
4425 - Added IronPython and Jython support to pybench (part of which was
4428 - Made some minor changes to pybench output to allow the user to see
4429 which Python version is running pybench.
4431 - Added support for the new platform module feature
4432 platform.python_implementation(); this will now be saved in the
4439 - RFE #1765140: Updated documentation on FileHandler and subclasses to
4440 include new optional delay argument.
4442 - Bug #932563: Added section on getting contextual information into
4443 logging output, and added documentation for the new LoggerAdapter
4446 - Bug #1295: Added information about caching of formatted exception
4447 information in the LogRecord by Formatter.format().
4449 - Bug #1637365: add subsection about "__name__ == __main__" to the
4452 - Patch #1698768: updated the "using Python on the Mac" intro.
4454 - Bug #1569057: Document that calling file.next() when the file is
4455 open for writing is undefined.
4457 - Patch #1489771: the syntax rules in Python Reference Manual were
4458 updated to reflect the current Python syntax.
4460 - Patch #1686451: Fix return type for
4461 PySequence_{Count,Index,Fast_GET_SIZE}.
4463 - Patch #1679379: add documentation for fnmatch.translate().
4465 - Bug #1629566: clarify the docs on the return values of parsedate()
4466 and parsedate_tz() in email.utils and rfc822.
4468 - Patch #1671450: add a section about subclassing builtin types to the
4469 "extending and embedding" tutorial.
4471 - Bug #1629125: fix wrong data type (int -> Py_ssize_t) in PyDict_Next
4474 - Bug #1565919: document set types in the Language Reference.
4476 - Bug #1546052: clarify that PyString_FromString(AndSize) copies the
4477 string pointed to by its parameter.
4479 - Bug #1566663: remove obsolete example from datetime docs.
4481 - Bug #1541682: Fix example in the "Refcount details" API docs.
4482 Additionally, remove a faulty example showing PySequence_SetItem
4483 applied to a newly created list object and add notes that this isn't
4490 - Patch #1552024: add decorator support to unparse.py demo script.
4492 - Make auto-generated python.vim file list built-ins and exceptions in
4493 alphatbetical order. Makes output more deterministic and easier to
4494 tell if the file is stale or not.
4496 - Bug #1546372: Fixed small bugglet in pybench that caused a missing
4497 file not to get reported properly.
4503 - Have the search path for building extensions follow the declared
4504 order in $CPPFLAGS and $LDFLAGS when adding directories from those
4505 environment variables.
4507 - Bug #1983: Added a check to pyport to verify that sizeof(pid_t) is
4508 smaller or equal sizeof(long).
4510 - Bug #1234: Fixed semaphore errors on AIX 5.2
4512 - Issue #1726: Remove Python/atof.c from PCBuild/pythoncore.vcproj.
4514 - Removed PCbuild8/ directory and added a new build directory for VS
4515 2005 based on the VS 2008 build directory to PC/VS8.0. The script
4516 PCbuild/vs8to9.py was added to sync changes from PCbuild to
4519 - Moved PCbuild/ directory for VS 2003 to PC/VS7.1 and renamed
4520 PCBuild9/ directory to PCBuild/.
4522 - Bug #1699: Define _BSD_SOURCE only on OpenBSD.
4524 - Bug #1608: use -fwrapv when GCC supports it. This is important,
4525 newer GCC versions may optimize away overflow buffer overflow checks
4526 without this option!
4528 - Patch #1418: Make the AC_REPLACE_FUNCS object files actually work.
4530 - Add a FAST_LOOPS build option that speeds-up looping by trading away
4531 periodic threadstate and signal checking in tight loops. By
4532 default, this option is turned-off. It should only be enabled in
4533 debugged, performance critical applications.
4535 - Patch #786737: Allow building in a tree of symlinks pointing to a
4538 - Bug #1737210: Change Manufacturer of Windows installer to PSF.
4540 - Bug #1746880: Correctly install DLLs into system32 folder on Win64.
4542 - Define _BSD_SOURCE, to get access to POSIX extensions on OpenBSD
4545 - Stop supporting AtheOS and cause a build error in configure for the
4548 - Bug #1655392: don't add -L/usr/lib/pythonX.Y/config to the LDFLAGS
4549 returned by python-config if Python was built with --enable-shared
4550 because that prevented the shared library from being used.
4552 - Patch #1569798: fix a bug in distutils when building Python from a
4553 directory within sys.exec_prefix.
4555 - Bug #1675511: Use -Kpic instead of -xcode=pic32 on Solaris/x86.
4557 - Disable _XOPEN_SOURCE on NetBSD 1.x.
4559 - configure now checks whether gcc supports the PyArg_ParseTuple
4562 - Bug #1578513: Cross compilation was broken by a change to configure.
4563 Repair so that it's back to how it was in 2.4.3.
4565 - Patch #1576954: Update VC6 build directory; remove redundant files
4568 - Bug #1568842: Fix test for uintptr_t.
4570 - Patch #1540470: for OpenBSD 4.0.
4572 - Fix build failure on kfreebsd and on the hurd.
4574 - Fix the build of the library reference in info format.
4576 - Allow Emacs 22 for building the documentation in info format.
4578 - Makefile.pre.in(buildbottest): Run an optional script
4579 pybuildbot.identify to include some information about the build
4586 - Unified naming convention for free lists and their limits. All free
4587 lists in Object/ are named ``free_list``, the counter ``numfree``
4588 and the upper limit is a macro ``PyName_MAXFREELIST`` inside an
4591 - ``PySet_Add()`` can now modify a newly created frozenset. Similarly
4592 to ``PyTuple_SetItem``, it can be used to populate a brand new
4593 frozenset; but it does not steal a reference to the added item.
4595 - Added ``PySet_Check()`` and ``PyFrozenSet_Check()`` to the set API.
4597 - Backport of PyUnicode_FromString(), _FromStringAndSize(), _Format
4598 and _FormatV from Python 3.0. Made PyLong_AsSsize_t and
4599 PyLong_FromSsize_t public functions.
4601 - Patch #1720595: add T_BOOL to the range of structmember types.
4603 - Issue #1534: Added ``PyFloat_GetMax()``, ``PyFloat_GetMin()`` and
4604 ``PyFloat_GetInfo()`` to the float API.
4606 - Issue #1521: On 64bit platforms, using PyArgs_ParseTuple with the t#
4607 of w# format code incorrectly truncated the length to an int, even
4608 when PY_SSIZE_T_CLEAN is set. The str.decode method used to return
4609 incorrect results with huge strings.
4611 - Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
4612 Py_TYPE and Py_REFCNT.
4614 - PEP 3123: Provide forward compatibility with Python 3.0, while
4615 keeping backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size,
4616 and PyVarObject_HEAD_INIT.
4618 - Py_ssize_t fields work in structmember when HAVE_LONG_LONG is not
4621 - Patch #1733960: Allow T_LONGLONG to accept ints.
4623 - T_PYSSIZET can now be used in PyMemberDef lists for Py_ssize_t members.
4625 - Added a new API function ``PyImport_ImportModuleNoBlock``.
4627 - Bug #1637022: Prefix AST symbols with _Py_.
4629 - Fix some leftovers from the conversion from int to Py_ssize_t
4630 (relevant to strings and sequences of more than 2**31 items).
4632 - Make _PyGILState_NoteThreadState() static, it was not used anywhere
4633 outside of pystate.c and should not be necessary.
4635 - ``PyImport_Import`` and ``PyImport_ImportModule`` now always do
4636 absolute imports. In earlier versions they might have used relative
4637 imports under some conditions.
4639 - Added case insensitive comparison methods ``PyOS_stricmp(char*,
4640 char*)`` and ``PyOS_strnicmp(char*, char*, Py_ssize_t)``.
4642 - Bug #1542693: remove semi-colon at end of PyImport_ImportModuleEx
4643 macro so it can be used as an expression.
4649 - Patch #1706: Drop support for Win9x, WinME and NT4. Python now
4650 requires Windows 2000 or greater. The _WINVER and NTDDI_VERSION
4651 macros are set to Win2k for x86/32bit builds and WinXP for AMD64
4654 - Conditionalize definition of _CRT_SECURE_NO_DEPRECATE and
4655 _CRT_NONSTDC_NO_DEPRECATE.
4657 - Bug #1216: Restore support for Visual Studio 2002.
4663 - cfmfile now raises a DeprecationWarning.
4665 - buildtools now raises a DeprecationWarning.
4667 - Removed the macfs module. It had been deprecated since Python 2.5.
4668 This lead to the deprecation of macostools.touched() as it relied
4669 solely on macfs and was a no-op under OS X.
4673 **(For information about older versions, consult the HISTORY file.)**