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 #6846: Fix bug where bytearray.pop() returns negative integers.
17 - classmethod no longer checks if its argument is callable.
19 - Issue #6750: A text file opened with io.open() could duplicate its output
20 when writing from multiple threads at the same time.
22 - Issue #6704: Improve the col_offset in AST for "for" statements with
23 a target of tuple unpacking.
25 - Issue #6707: dir() on an uninitialized module caused a crash.
27 - Issue #6540: Fixed crash for bytearray.translate() with invalid parameters.
29 - Issue #6573: set.union() stopped processing inputs if an instance of self
30 occurred in the argument chain.
32 - Issue #1616979: Added the cp720 (Arabic DOS) encoding.
34 - Issue #6070: On posix platforms import no longer copies the execute bit
35 from the .py file to the .pyc file if it is set. Patch by Marco N.
37 - Issue #4618: When unicode arguments are passed to print(), the default
38 separator and end should be unicode also.
40 - Issue #6119: Fixed a incorrect Py3k warning about order comparisons of builtin
41 functions and methods.
43 - Issue #6347: Include inttypes.h as well as stdint.h in pyport.h.
44 This fixes a build failure on HP-UX: int32_t and uint32_t are
45 defined in inttypes.h instead of stdint.h on that platform.
47 - Issue #4856: Remove checks for win NT.
49 - Issue #2016: Fixed a crash in a corner case where the dictionary of keyword
50 arguments could be modified during the function call setup.
52 - Removed the ipaddr module.
54 - Issue #6329: Fixed iteration for memoryview objects (it was being blocked
55 because it wasn't recognized as a sequence).
57 - Issue #6289: Encoding errors from compile() were being masked.
59 - When no module is given in a relative import, the module field of the
60 ImportFrom AST node is now None instead of an empty string.
62 - Assignment to None using import statements now raises a SyntaxError.
64 - Issue #4547: When debugging a very large function, it was not always
65 possible to update the lineno attribute of the current frame.
67 - Issue #5330: C functions called with keyword arguments were not reported by
68 the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.
70 - Issue #5982: staticmethod and classmethod now expose the wrapped
71 function with __func__.
73 - Added support for multiple context managers in the same with-statement.
74 Deprecated contextlib.nested() which is no longer needed.
76 - Issue #6101: A new opcode, SETUP_WITH, has been added to speed up the with
77 statement and correctly lookup the __enter__ and __exit__ special methods.
79 - Issue #5829: complex("1e500") no longer raises OverflowError. This
80 makes it consistent with float("1e500") and interpretation of real
81 and imaginary literals.
83 - Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
85 - __instancecheck__ and __subclasscheck__ are now completely ignored on classic
86 classes and instances.
88 - Issue #5994: the marshal module now has docstrings.
90 - Issue #5981: Fix three minor inf/nan issues in float.fromhex:
91 (1) inf and nan strings with trailing whitespace were incorrectly
92 rejected; (2) parsing of strings representing infinities and nans
93 was locale aware; and (3) the interpretation of fromhex('-nan')
94 didn't match that of float('-nan').
96 - Issue #5920: For float.__format__, change the behavior with the
97 empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
98 to be like 'g' but with at least one decimal point and with a
99 default precision of 12. Previously, the behavior the same but with
100 a default precision of 6. This more closely matches str(), and
101 reduces surprises when adding alignment flags to the empty
102 presentation type. This also affects the new complex.__format__ in
105 - Issue #5890: in subclasses of 'property' the __doc__ attribute was
106 shadowed by classtype's, even if it was None. property now
107 inserts the __doc__ into the subclass instance __dict__.
109 - Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
110 sequences. Patch by Nick Barnes and Victor Stinner.
112 - Issue #1588: Add complex.__format__. For example,
113 format(complex(1, 2./3), '.5') now produces a sensible result.
115 - Issue #5864: Fix empty format code formatting for floats so that it
116 never gives more than the requested number of significant digits.
118 - Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
119 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
121 - Issue #4971: Fix titlecase for characters that are their own
122 titlecase, but not their own uppercase.
124 - Issue #5835: Deprecate PyOS_ascii_formatd and replace it with
125 _PyOS_double_to_string or PyOS_double_to_string.
127 - Issue #5283: Setting __class__ in __del__ caused a segfault.
129 - Issue #5816: complex(repr(z)) now recovers z exactly, even when
130 z involves nans, infs or negative zeros.
132 - Implement PEP 378, Format Specifier for Thousands Separator, for
133 floats, ints, and longs.
135 - Issue #5515: 'n' formatting for ints, longs, and floats handles
136 leading zero formatting poorly.
138 - Issue #5772: For float.__format__, don't add a trailing ".0" if
139 we're using no type code and we have an exponent.
141 - Issue #3166: Make long -> float (and int -> float) conversions
144 - Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
147 - Issue #1869: fix a couple of minor round() issues. round(5e15+1)
148 was giving 5e15+2; round(-0.0) was losing the sign of the zero.
150 - Issue #5759: float() didn't call __float__ on str subclasses.
152 - Issue #5704: the "-3" command-line option now implies "-t".
154 - Issue #2170: refactored xml.dom.minidom.normalize, increasing both
155 its clarity and its speed.
157 - Issue #2396: the memoryview object was backported from Python 3.1.
159 - Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
160 when hitting the recursion limit under certain circumstances.
162 - Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
164 - Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
165 the end sys.path, for compatibility with the system install of Python.
167 - Issue #4688: Add a heuristic so that tuples and dicts containing only
168 untrackable objects are not tracked by the garbage collector. This can
169 reduce the size of collections and therefore the garbage collection overhead
170 on long-running programs, depending on their particular use of datatypes.
172 - Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
173 improve its performance. Long divisions and remainder operations
174 are now between 50% and 150% faster.
176 - Issue #4258: Make it possible to use base 2**30 instead of base
177 2**15 for the internal representation of integers, for performance
178 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
179 --enable-big-digits option to configure, which overrides the
180 default. Add sys.long_info structseq to provide information about
183 - Issue #4034: Fix weird attribute error messages of the traceback object. (As a
184 result traceback.__members__ no longer exists.)
186 - Issue #4474: PyUnicode_FromWideChar now converts characters outside
187 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
188 and sizeof(Py_UNICODE) == 2.
190 - Issue #5237: Allow auto-numbered fields in str.format(). For
191 example: '{} {}'.format(1, 2) == '1 2'.
193 - Issue #3652: Make the 'line' argument for warnings.showwarning() a
194 requirement. Means the DeprecationWarning from Python 2.6 can go away.
196 - Issue #5247: Improve error message when unknown format codes are
197 used when using str.format() with str, unicode, long, int, and
200 - Running Python with the -3 option now also warns about classic division
203 - Issue #5260: Long integers now consume less memory: average
204 saving is 2 bytes per long on a 32-bit system and 6 bytes per long
207 - Issue #5186: Reduce hash collisions for objects with no __hash__ method by
208 rotating the object pointer by 4 bits to the right.
210 - Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
211 it now forces its argument to double before testing for infinity.
213 - Issue #4978: Passing keyword arguments as unicode strings is now allowed.
215 - Issue #1242657: the __len__() and __length_hint__() calls in several tools
216 were suppressing all exceptions. These include list(), filter(), map(),
217 zip(), and bytearray().
219 - os.ftruncate raises OSErrors instead of IOErrors for consistency with other os
222 - Issue #4991: Passing invalid file descriptors to io.FileIO now raises an
225 - Issue #4807: Port the _winreg module to Windows CE.
227 - Issue #4935: The overflow checking code in the expandtabs() method common
228 to str, bytes and bytearray could be optimized away by the compiler, letting
229 the interpreter segfault instead of raising an error.
231 - Issue #3720: Fix a crash when an iterator modifies its class and removes its
234 - Issue #4893: Use NT threading on CE.
236 - Issue #4915: Port sysmodule to Windows CE.
238 - Issue #4074: Change the criteria for doing a full garbage collection (i.e.
239 collecting the oldest generation) so that allocating lots of objects without
240 destroying them does not show quadratic performance. Based on a proposal by
242 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
244 - Issue #4850: Change COUNT_ALLOCS variables to Py_ssize_t.
246 - Issue #1180193: When importing a module from a .pyc (or .pyo) file with
247 an existing .py counterpart, override the co_filename attributes of all
248 code objects if the original filename is obsolete (which can happen if the
249 file has been renamed, moved, or if it is accessed through different paths).
250 Patch by Ziga Seilnacht and Jean-Paul Calderone.
252 - Issue #4075: Use OutputDebugStringW in Py_FatalError.
254 - Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
255 file with `str' filename on Windows.
257 - Issue #3680: Reference cycles created through a dict, set or deque iterator
258 did not get collected.
260 - Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
261 where the tp_hash and tp_dict slots are both NULL.
263 - Issue #4764: With io.open, IOError.filename is set when trying to open a
264 directory on POSIX systems.
266 - Issue #4764: IOError.filename is set when trying to open a directory on POSIX
269 - Issue #4759: None is now allowed as the first argument of
270 bytearray.translate(). It was always allowed for bytes.translate().
272 - Added test case to ensure attempts to read from a file opened for writing
275 - Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
276 print elapsed times, not only when some objects are uncollectable /
277 unreachable. Original patch by Neil Schemenauer.
279 - Issue #3439: Add a bit_length method to int and long.
281 - Issue #2183: Simplify and optimize bytecode for list comprehensions.
282 Original patch by Neal Norwitz.
284 - Issue #4597: Fixed exception handling when the __exit__ function of a
285 context manager returns a value that cannot be converted to a bool.
287 - Issue #4597: Fixed several opcodes that weren't always propagating
290 - Issue #4445: Replace "sizeof(PyStringObject)" with
291 "offsetof(PyStringObject, ob_sval) + 1" when allocating memory for
292 str instances. On a typical machine this saves 3 bytes of memory
293 (on average) per string allocation.
295 - Issue #3996: On Windows, the PyOS_CheckStack function would cause the
296 interpreter to abort ("Fatal Python error: Could not reset the stack!")
297 instead of throwing a MemoryError.
299 - Issue #3689: The list reversed iterator now supports __length_hint__
300 instead of __len__. Behavior now matches other reversed iterators.
302 - Issue #4367: Python would segfault during compiling when the unicodedata
303 module couldn't be imported and \N escapes were present.
305 - Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
306 method on file objects with closefd=False. The file descriptor is still
307 kept open but the file object behaves like a closed file. The ``FileIO``
308 object also got a new readonly attribute ``closefd``.
310 - Issue #4348: Some bytearray methods returned that didn't cause any change to
311 the bytearray, returned the same bytearray instead of a copy.
313 - Issue #4317: Fixed a crash in the imageop.rgb2rgb8() function.
315 - Issue #4230: If ``__getattr__`` is a descriptor, it now functions correctly.
317 - Issue #4048: The parser module now correctly validates relative imports.
319 - Issue #4225: ``from __future__ import unicode_literals`` didn't work in an
322 - Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
323 method does not return iterators for the 4th and 5th items.
325 - Issue #4209: Enabling unicode_literals and the print_function in the same
326 __future__ import didn't work.
328 - Using ``nonlocal`` as a variable name will now raise a Py3k SyntaxWarning
329 because it is a reserved word in 3.x.
331 - On windows, os.chdir given unicode was not working if GetCurrentDirectoryW
332 returned a path longer than MAX_PATH. (But It's doubtful this code path is
333 really executed because I cannot move to such directory on win2k)
335 - Issue #4069: When set.remove(element) is used with a set element, the element
336 is temporarily replaced with an equivalent frozenset. But the eventual
337 KeyError would always report the empty frozenset([]) as the missing key. Now
338 it correctly refers to the initial element.
340 - Issue #4509: Various issues surrounding resize of bytearray objects to
341 which there are buffer exports.
343 - Issue #4748: Lambda generators no longer return a value.
345 - Issue #3582: Use native TLS functions on Windows
347 - The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
349 - Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
352 - Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
353 to avoid compiler warnings.
355 - Issue #5705: os.setuid() would not accept values > 2**31-1 but pwd.getpwnam()
356 returned them on 64bit platforms.
358 - Issue #5108: Handle %s like %S and %R in PyUnicode_FromFormatV(): Call
359 PyUnicode_DecodeUTF8() once, remember the result and output it in a second
360 step. This avoids problems with counting UTF-8 bytes that ignores the effect
361 of using the replace error handler in PyUnicode_DecodeUTF8().
363 - Issue #3739: The unicode-internal encoder now reports the number of characters
364 consumed like any other encoder (instead of the number of bytes).
369 - Issue #6838: Use a list to accumulate the value instead of
370 repeatedly concatenating strings in httplib's
371 HTTPResponse._read_chunked providing a significant speed increase
372 when downloading large files servend with a Transfer-Encoding of 'chunked'.
374 - Issue #5275: In Cookie's Cookie.load(), properly handle non-string arguments
377 - Issue #2666: Handle BROWSER environment variable properly for unknown browser
378 names in the webbrowser module.
380 - Issue #6054: Do not normalize stored pathnames in tarfile.
382 - Issue #6794: Fix Decimal.compare_total and Decimal.compare_total_mag: NaN
383 payloads are now ordered by integer value rather than lexicographically.
385 - Issue #6693: New functions in site.py to get user/global site packages paths.
387 - The thread.lock type now supports weak references.
389 - Issue #1356969: Add missing info methods in Tix.HList.
391 - Issue #1522587: New constants and methods for the Tix.Grid widget.
393 - Issue #1250469: Fix the return value of Tix.PanedWindow.panes.
395 - Issue #1119673: Do not override Tkinter.Text methods when creating a
398 - Issue #6665: Fix fnmatch to properly match filenames with newlines in them.
400 - Issue #1135: Add the XView and YView mix-ins to avoid duplicating
401 the xview* and yview* methods.
403 - Issue #6629: Fix a data corruption issue in the new `io` package, which could
404 occur when writing to a BufferedRandom object (e.g. a file opened in "rb+" or
405 "wb+" mode) after having buffered a certain amount of data for reading. This
406 bug was not present in the pure Python implementation.
408 - Issue #4660: If a multiprocessing.JoinableQueue.put() was preempted, it was
409 possible to get a spurious 'task_done() called too many times' error.
411 - Issue #1628205: Socket file objects returned by socket.socket.makefile() now
412 properly handles EINTR within the read, readline, write & flush methods.
413 The socket.sendall() method now properly handles interrupted system calls.
415 - Issue #6595: The Decimal constructor now allows arbitrary Unicode
416 decimal digits in input, as recommended by the standard. Previously
417 it was restricted to accepting [0-9].
419 - Issue #6511: ZipFile now raises BadZipfile (instead of an IOError) when
420 opening an empty or very small file.
422 - Issue #6553: Fixed a crash in cPickle.load(), when given a file-like object
423 containing incomplete data.
425 - Issue #6545: Removed assert statements in distutils.Extension, so the
426 behavior is similar when used with -O.
428 - unittest has been split up into a package. All old names should still work.
430 - Issue #6431: Make Fraction type return NotImplemented when it doesn't
431 know how to handle a comparison without loss of precision. Also add
432 correct handling of infinities and nans for comparisons with float.
434 - Issue #6415: Fixed warnings.warn segfault on bad formatted string.
436 - Issue #6466: now distutils.cygwinccompiler and distutils.emxccompiler
437 uses the same refactored function to get gcc/ld/dllwrap versions numbers.
438 It's `distutils.util.get_compiler_versions`. Added deprecation warnings
439 for the obsolete get_versions() functions.
441 - Issue #6433: fixed issues with multiprocessing.pool.map hanging on empty list
443 - Issue #6314: logging: Extra checks on the "level" argument in more places.
445 - Issue #2622: Fixed an ImportError when importing email.messsage from a
446 standalone application built with py2exe or py2app.
448 - Issue #6455: Fixed test_build_ext under win32.
450 - Issue #6377: Enabled the compiler option, and deprecate its usage as an
453 - Issue #6413: Fixed the log level in distutils.dist for announce.
455 - Issue #3392: The subprocess communicate() method no longer fails in select()
456 when file descriptors are large; communicate() now uses poll() when possible.
458 - Issue #6403: Fixed package path usage in build_ext.
460 - Issues #5155, 5313, 5331: multiprocessing.Process._bootstrap was
461 unconditionally calling "os.close(sys.stdin.fileno())" resulting in file
464 - Issue #6365: Distutils build_ext inplace mode was copying the compiled
465 extension in a subdirectory if the extension name had dots.
467 - Issue #6344: Fixed a crash of mmap.read() when passed a negative argument.
469 - Issue #5230: pydoc would report no documentation found if a module generated
470 a 'not found' import error when loaded; it now reports the import errors.
471 Thanks to Lucas Prado Melo for initial fix and collaboration on the tests.
473 - Issue #6314: logging.basicConfig() performs extra checks on the "level"
476 - Issue #6164: Added an AIX specific linker argument in Distutils
477 unixcompiler. Original patch by Sridhar Ratnakumar.
479 - Issue #6274: Fixed possible file descriptors leak in subprocess.py
481 - Issue #6189: Restored compatibility of subprocess.py with Python 2.2.
483 - Issue #6287: Added the license field in Distutils documentation.
485 - Issue #6286: Now Distutils upload command is based on urllib2 instead of
486 httplib, allowing the usage of http_proxy.
488 - Issue #6271: mmap tried to close invalid file handle (-1) when annonymous.
491 - Issue #6215: All bug fixes and enhancements from the Python 3.1 io library
492 (including the fast C implementation) have been backported to the standard
495 - Issue #6258: Support AMD64 in bdist_msi.
497 - Issue #5262: Fixed bug in next rollover time computation in
498 TimedRotatingFileHandler.
500 - Issue #6263: Fixed syntax error in distutils.cygwincompiler.
502 - Issue #5201: distutils.sysconfig.parse_makefile() now understands `$$`
503 in Makefiles. This prevents compile errors when using syntax like:
504 `LDFLAGS='-rpath=\$$LIB:/some/other/path'`. Patch by Floris Bruynooghe.
506 - Issue #5767: Removed sgmlop support from xmlrpclib.
508 - Issue #6131: test_modulefinder leaked when run after test_distutils.
509 Patch by Hirokazu Yamamoto.
511 - Issue #6048: Now Distutils uses the tarfile module in archive_util.
513 - Issue #5150: IDLE's format menu now has an option to strip trailing
516 - Issue #6121: pydoc now ignores leading and trailing spaces in the
517 argument to the 'help' function.
519 - In unittest, using a skipping decorator on a class is now equivalent to
520 skipping every test on the class. The ClassTestSuite class has been removed.
522 - Issue #6050: Don't fail extracting a directory from a zipfile if
523 the directory already exists.
525 - Issue #5311: bdist_msi can now build packages that do not depend on a
526 specific Python version.
528 - Issue #1309352: fcntl now converts its third arguments to a C `long` rather
529 than an int, which makes some operations possible under 64-bit Linux (e.g.
530 DN_MULTISHOT with F_NOTIFY).
532 - Issue #1424152: Fix for httplib, urllib2 to support SSL while working through
533 proxy. Original patch by Christopher Li, changes made by Senthil Kumaran.
535 - Issue #1983: Fix functions taking or returning a process identifier to use
536 the dedicated C type ``pid_t`` instead of a C ``int``. Some platforms have
537 a process identifier type wider than the standard C integer type.
539 - Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket.
540 Patch by Farhan Ahmad, test by Marcin Bachry.
542 - Issue #6062: In distutils, fixed the package option of build_ext. Feedback
543 and tests on pywin32 by Tim Golden.
545 - Issue #6053: Fixed distutils tests on win32. patch by Hirokazu Yamamoto.
547 - Issue #6046: Fixed the library extension when distutils build_ext is used
548 inplace. Initial patch by Roumen Petrov.
550 - Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
553 - Issue #2116: Weak references and weak dictionaries now support copy()ing and
556 - Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
558 - Issue #5918: Fix a crash in the parser module.
560 - Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
562 - Issue #6022: a test file was created in the current working directory by
563 test_get_outputs in Distutils.
565 - Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
566 file is a binary. Patch by Brodie Rao, tests by Daniel Diniz.
568 - Issue #5977: distutils build_ext.get_outputs was not taking into account the
569 inplace option. Initial patch by kxroberto.
571 - Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
572 for old-style extensions.
574 - Issue #5971: StreamHandler.handleError now swallows IOErrors which occur when
575 trying to print a traceback.
577 - Issue #5976: Fixed Distutils test_check_environ.
579 - Issue #5900: Ensure RUNPATH is added to extension modules with RPATH if GNU
580 ld is used. Original patch by Floris Bruynooghe.
582 - Issue #5941: Distutils build_clib command was not working anymore because
583 of an incomplete costumization of the archiver command. Added ARFLAGS in the
584 Makefile besides AR and make Distutils use it. Original patch by David
587 - Issue 5955: aifc's close method did not close the file it wrapped,
588 now it does. This also means getfp method now returns the real fp.
590 - Issue #4875: On win32, ctypes.util.find_library does no longer
593 - Issue #5142: Add the ability to skip modules while stepping to pdb.
595 - Issue #1309567: Fix linecache behavior of stripping subdirectories when
596 looking for files given by a relative filename.
598 - Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
599 extracting a file to the root directory.
601 - Issue #5913: os.listdir() should fail for empty path on windows.
603 - Issue #5084: unpickling now interns the attribute names of pickled objects,
604 saving memory and avoiding growth in size of subsequent pickles. Proposal
605 and original patch by Jake McGuire.
607 - Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
608 error when a named pipe is encountered, rather than blocking infinitely.
610 - Issue #3959: The ipaddr module has been added to the standard library.
611 Contributed by Google.
613 - Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
615 - Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
618 - Issue #4305: ctypes should now build again on mipsel-linux-gnu
620 - Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
621 string is already in normalized form, by performing a quick check beforehand.
622 Original patch by Rauli Ruohonen.
624 - Issue #5853: calling a function of the mimetypes module from several threads
625 at once could hit the recursion limit if the mimetypes database hadn't been
628 - Issue #5854: Updated __all__ to include some missing names and remove some
629 names which should not be exported.
631 - Issue #5810: Fixed Distutils test_build_scripts so it uses
632 sysconfig.get_config_vars.
634 - Issue #4951: Fixed failure in test_httpservers.
636 - Issue #3102: All global symbols that the _ctypes extension defines
637 are now prefixed with 'Py' or '_ctypes'.
639 - Issue #5041: ctypes does now allow pickling wide character.
641 - Issue #5812: For the two-argument form of the Fraction constructor,
642 Fraction(m, n), m and n are permitted to be arbitrary Rational
645 - Issue #5812: Fraction('1e6') is valid: more generally, any string
646 that's valid for float() is now valid for Fraction(), with the
647 exception of strings representing NaNs and infinities.
649 - Issue #5795: Fixed test_distutils failure on Debian ppc.
651 - Issue #5768: Fixed bug in Unicode output logic and test case for same.
653 - Issue #1161031: fix readwrite select flag handling: POLLPRI now
654 results in a handle_expt_event call, not handle_read_event, and POLLERR
655 and POLLNVAL now call handle_close, not handle_expt_event. Also,
656 dispatcher now has an 'ignore_log_types' attribute for suppressing
657 log messages, which is set to 'warning' by default.
659 - Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
661 - Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
662 a value in SafeConfigParser.
664 - Issue #5732: added a new command in Distutils: check.
666 - Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
667 platforms. Initial patch by Paul Moore.
669 - Issue #2254: Fix CGIHTTPServer information disclosure. Relative paths are
670 now collapsed within the url properly before looking in cgi_directories.
672 - Issue #5095: Added bdist_msi to the list of bdist supported formats.
673 Initial fix by Steven Bethard.
675 - Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
676 Initial fix by Wayne Davison.
678 - Issue #5693: TestSuite.__iter__ can now be consistently overridden in subclasses.
680 - Issue #5694: removed spurious test output in Distutils (test_clean).
682 - Issue #5471: Fix os.path.expanduser() for $HOME set to '/'.
684 - Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
686 - Issue #1726172: fix IndexError in the case of and empty response in ftplib.
688 - Issue #2625: added missing iteritems() call to the for loop in
689 mailbox.MH.get_message().
691 - Issue #5585: Add the ability to call an initializer to mulitiprocessing.manager
692 so that users can install custom handlers/etc.
694 - Issue #3551: Patch multiprocessing to raise a proper exception if the size of the
695 object when writefile is called causes a ERROR_NO_SYSTEM_RESOURCES. Added docs
696 to note the limitation
698 - unittest.assertNotEqual() now uses the inequality operator (!=) instead
699 of the equality operator.
701 - Issue #6001: Test discovery for unittest. Implemented in
702 unittest.TestLoader.discover and from the command line.
704 - Issue #5679: The methods unittest.TestCase.addCleanup and doCleanups were added.
705 addCleanup allows you to add cleanup functions that will be called
706 unconditionally (after setUp if setUp fails, otherwise after tearDown). This
707 allows for much simpler resource allocation and deallocation during tests.
709 - Issue #3379: unittest.main now takes an optional exit argument. If False main
710 doesn't call sys.exit allowing it to be used from the interactive interpreter.
712 - Issue #5995: unittest.main now takes an optional verbosity argument allowing
713 test modules to be run with a higher than default verbosity.
715 - Issue #5995: A fix to allow you to run "python -m unittest test_module" or
716 "python -m unittest test_module.TestClass" from the command line.
718 - Issue #5728: unittest.TestResult has new startTestRun and stopTestRun methods;
719 called immediately before and after a test run.
721 - Issue #5663: better failure messages for unittest asserts. Default assertTrue
722 and assertFalse messages are now useful. TestCase has a longMessage attribute.
723 This defaults to False, but if set to True useful error messages are shown in
724 addition to explicit messages passed to assert methods.
726 - Issue #3110: Add additional protect around SEM_VALUE_MAX for multiprocessing
728 - In Pdb, prevent the reassignment of __builtin__._ by sys.displayhook on
731 - Issue #4572: added SEEK_* symbolic constants to io module.
733 - Issue #1665206 (partially): Move imports in cgitb to the top of the module
734 instead of performing them in functions. Helps prevent import deadlocking in
737 - Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
739 - Actually make the SimpleXMLRPCServer CGI handler work.
741 - Issue #2522: locale.format now checks its first argument to ensure it has
742 been passed only one pattern, avoiding mysterious errors where it appeared
743 that it was failing to do localization.
745 - Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
748 - Issue #5619: Multiprocessing children disobey the debug flag and causes
749 popups on windows buildbots. Patch applied to work around this issue.
751 - Issue #5632: Thread.ident was None for the main thread and threads not created
752 with the threading module.
754 - Issue #5400: Added patch for multiprocessing on netbsd compilation/support
756 - Issue #5387: Fixed mmap.move crash by integer overflow.
758 - Issue #5261: Patch multiprocessing's semaphore.c to support context
759 manager use: "with multiprocessing.Lock()" works now.
761 - Issue #5177: Multiprocessing's SocketListener class now uses
762 socket.SO_REUSEADDR on all connections so that the user no longer needs
763 to wait 120 seconds for the socket to expire.
765 - Adjusted _tkinter to compile without warnings when WITH_THREAD is not
766 defined (part of issue #5035).
768 - Issue #5561: Removed the sys.version_info shortcuts from platform's
769 python_version() and python_version_tuple() since they produced different
770 output compared to previous Python versions.
772 - Issue #1034053: unittest now supports skipping tests and expected failures.
774 - The unittest.TestCase.assertRaises() method now returns a context manager when
775 not given a callable so that code to be tested can be written inline using
778 - The unittest.TestCase.assertEqual() now displays the differences in lists,
779 tuples, dicts and sets on failure. Many new handy type and comparison
780 specific assert* methods have been added that fail with error messages
781 actually useful for debugging. Contributed in part by Google. [Issue #2578]
783 - Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
784 forever on incomplete input. That caused tarfile.open() to hang when used
785 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
786 partial bzip2 compressed data.
788 - Issue #5536: urllib.urlretrieve makes sure to close the file it's writing to
789 even if an exception occurs.
791 - Issue #5381: Added object_pairs_hook to the json module. This allows
792 OrderedDicts to be built by the decoder.
794 - Issue #2110: Add support for thousands separator and 'n' type
795 specifier to Decimal.__format__
797 - Fix Decimal.__format__ bug that swapped the meanings of the '<' and
798 '>' alignment characters.
800 - Issue #1222: locale.format() bug when the thousands separator is a space
803 - Issue #5472: Fixed distutils.test_util tear down. Original patch by
806 - collections.deque() objects now have a read-only attribute called maxlen.
808 - Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
809 it is has been populated and properly configured in order to prevent
812 - Issue #4792: Prevent a segfault in _tkinter by using the
813 guaranteed to be safe interp argument given to the PythonCmd in place of
814 the Tcl interpreter taken from a PythonCmd_ClientData.
816 - Issue #5193: Guarantee that Tkinter.Text.search returns a string.
818 - Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
819 Original patch by Akira Kitada.
821 - Issue #5385: Fixed mmap crash after resize failure on windows.
823 - Issue #5179: Fixed subprocess handle leak on failure on windows.
825 - PEP 372: Added collections.OrderedDict().
827 - The _asdict() for method for namedtuples now returns an OrderedDict().
829 - The configparser module now defaults to using an ordered dictionary.
831 - Issue #4308: httplib.IncompleteRead's repr doesn't include all of the data all
834 - Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
835 import guess_extension`` was used.
837 - Issue #1733986: Fixed mmap crash in accessing elements of second map object
838 with same tagname but larger size than first map. (Windows)
840 - Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
843 - Issue #1533164: Installed but not listed *.pyo was breaking Distutils
846 - Issue #5378: added --quiet option to Distutils bdist_rpm command.
848 - Issue #5052: make Distutils compatible with 2.3 again.
850 - Deprecated methods of symtable.Symbol have been removed: is_keywordarg(),
851 is_vararg(), and is_in_tuple().
853 - Issue #5316: Fixed buildbot failures introduced by multiple inheritance
856 - Issue #5287: Add exception handling around findCaller() call to help out
859 - Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
860 The file was resized to wrong size.
862 - Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
864 - Issue #2279: distutils.sdist.add_defaults now add files
865 from the package_data and the data_files metadata.
867 - Issue #5257: refactored all tests in distutils, so they use
868 support.TempdirManager, to avoid writing in the tests directory.
870 - Issue #4524: distutils build_script command failed with --with-suffix=3.
871 Initial patch by Amaury Forgeot d'Arc.
873 - Issue #2461: added tests for distutils.util
875 - Issue #1008086: Fixed socket.inet_aton() to always return 4 bytes even on
876 LP64 platforms (most 64-bit Linux, bsd, unix systems).
878 - Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
879 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
881 - Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
882 under NT and OS2. Patch by Philip Jenvey.
884 - Issue #5128: Make compileall properly inspect bytecode to determine if needs
885 to be recreated. This avoids a timing hole thanks to the old reliance on the
886 ctime of the files involved.
888 - Issue #5122: Synchronize tk load failure check to prevent a potential
891 - Issue #1818: collections.namedtuple() now supports a keyword argument
892 'rename' which lets invalid fieldnames be automatically converted to
893 positional names in the form, _1, _2, ...
895 - Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
897 - Issue #5170: Fixed Unicode output bug in logging and added test case.
898 This is a regression which did not occur in 2.5.
900 - Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
901 public documented method ``ZipImporter.get_filename()``.
903 - Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
904 the execution of packages by looking for and executing a ``__main__``
905 submodule when a package name is supplied. Initial patch by Andi
908 - Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
909 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
910 Tkapp_Call when calling from a thread different than the one that created
911 the Tcl interpreter. Patch by Robert Hancock.
913 - Issue #1520877: Now distutils.sysconfig reads $AR from the
914 environment/Makefile. Patch by Douglas Greiman.
916 - Issue #4285: Change sys.version_info to be a named tuple. Patch by
919 - Issue #1276768: The verbose option was not used in the code of
920 distutils.file_util and distutils.dir_util.
922 - Issue #5132: Fixed trouble building extensions under Solaris with
923 --enabled-shared activated. Initial patch by Dave Peterson.
925 - Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
927 - Issue #2047: shutil.move() could believe that its destination path was
928 inside its source path if it began with the same letters (e.g. "src" vs.
931 - Issue #4920: Fixed .next() vs .__next__() issues in the ABCs for
932 Iterator and MutableSet.
934 - Added the ttk module. See issue #2983: Ttk support for Tkinter.
936 - Issue #5021: doctest.testfile() did not create __name__ and
937 collections.namedtuple() relied on __name__ being defined.
939 - Backport importlib from Python 3.1. Only the import_module() function has
940 been backported to help facilitate transitions from 2.7 to 3.1.
942 - Issue #1885: distutils. When running sdist with --formats=tar,gztar
943 the tar file was overriden by the gztar one.
945 - Issue #4863: distutils.mwerkscompiler has been removed.
947 - Added a new itertools functions: combinations_with_replacement()
950 - Issue #5032: added a step argument to itertools.count() and
951 allowed non-integer arguments.
953 - Fix and properly document the multiprocessing module's logging
954 support, expose the internal levels and provide proper usage
957 - Issue #1672332: fix unpickling of subnormal floats, which was
958 producing a ValueError on some platforms.
960 - Issue #3881: Help Tcl to load even when started through the
961 unreadable local symlink to "Program Files" on Vista.
963 - Issue #4710: Extract directories properly in the zipfile module;
964 allow adding directories to a zipfile.
966 - Issue #3807: _multiprocessing build fails when configure is passed
967 --without-threads argument. When this occurs, _multiprocessing will
968 be disabled, and not compiled.
970 - Issue #5008: When a file is opened in append mode with the new IO library,
971 do an explicit seek to the end of file (so that e.g. tell() returns the
972 file size rather than 0). This is consistent with the behaviour of the
973 traditional 2.x file object.
975 - Issue #5013: Fixed a bug in FileHandler which occurred when the delay
978 - Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
979 which inherited from numbers.py which did not have __slots__ defined. The
980 numbers hierarchy now has its own __slots__ declarations.
982 - Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
983 for *nix machines for negative handles and large int handles. Without this check
984 it is possible to segfault the interpreter.
986 - Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
989 - Issue #1225107: inspect.isclass() returned True for instances with a custom
992 - Issue #3997: zipfiles generated with more than 65536 files could not be
993 opened with other applications.
995 - Issue #1162154: inspect.getmembers() now skips attributes that raise
996 AttributeError, e.g. a __slots__ attribute which has not been set.
998 - Issue #1696199: Add collections.Counter() for rapid and convenient
1001 - Issue #3860: GzipFile and BZ2File now support the context manager protocol.
1003 - Issue #4272: Add an optional argument to the GzipFile constructor to override
1004 the timestamp in the gzip stream. The default value remains the current time.
1005 The information can be used by e.g. gunzip when decompressing. Patch by
1008 - Restore Python 2.3 compatibility for decimal.py.
1010 - Issue #1702551: distutils sdist was not excluding VCS directories under
1011 Windows. Inital solution by Guy Dalberto.
1013 - The _tkinter module functions "createfilehandler", "deletefilehandler",
1014 "createtimerhandler", "mainloop", "dooneevent" and "quit" have been
1015 deprecated for removal in 3.x
1017 - Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
1018 to the decimal module.
1020 - Issue #4812: add missing underscore prefix to some internal-use-only
1021 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
1023 - Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
1024 the function is not a generator.
1026 - Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
1027 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
1029 - Issue #4646: distutils was choking on empty options arg in the setup
1030 function. Original patch by Thomas Heller.
1032 - Fractions.from_float() no longer loses precision for integers too big to
1035 - Issue #4790: The nsmallest() and nlargest() functions in the heapq module
1036 did unnecessary work in the common case where no key function was specified.
1038 - Issue #3767: Convert Tk object to string in tkColorChooser.
1040 - Issue #3248: Allow placing ScrolledText in a PanedWindow.
1042 - Issue #4444: Allow assertRaises() to be used as a context handler, so that
1043 the code under test can be written inline if more practical.
1045 - Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
1046 works as expected in the interactive environment.
1048 - Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
1051 - Issue #4400: .pypirc default generated file was broken in distutils.
1053 - Issue #4736: io.BufferedRWPair's closed property now functions properly.
1055 - Issue #3954: Fix a potential SystemError in _hotshot.logreader error
1058 - Issue #4574: fix a crash in io.IncrementalNewlineDecoder when a carriage
1059 return encodes to more than one byte in the source encoding (e.g. UTF-16)
1060 and gets split on a chunk boundary.
1062 - Issue #4223: inspect.getsource() will now correctly display source code
1063 for packages loaded via zipimport (or any other conformant PEP 302
1064 loader). Original patch by Alexander Belopolsky.
1066 - Issue #4201: pdb can now access and display source code loaded via
1067 zipimport (or any other conformant PEP 302 loader). Original patch by
1068 Alexander Belopolsky.
1070 - Issue #4197: doctests in modules loaded via zipimport (or any other PEP
1071 302 conformant loader) will now work correctly in most cases (they
1072 are still subject to the constraints that exist for all code running
1073 from inside a module loaded via a PEP 302 loader and attempting to
1074 perform IO operations based on __file__). Original patch by
1075 Alexander Belopolsky.
1077 - Issues #4082 and #4512: Add runpy support to zipimport in a manner that
1078 allows backporting to maintenance branches. Original patch by
1079 Alexander Belopolsky.
1081 - Issue #4163: Use unicode-friendly word splitting in the textwrap functions
1082 when given an unicode string.
1084 - Issue #4616: TarFile.utime(): Restore directory times on Windows.
1086 - Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
1087 give correct results in the case where one argument is a quiet NaN
1088 and the other is a finite number that requires rounding.
1090 - Issue #1030250: Distutils created directories even when run with the
1093 - Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
1096 - Issue #4529: fix the parser module's validation of try-except-finally
1099 - Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
1100 not a malformed option.
1102 - Added the subprocess.check_output() convenience function to get output
1103 from a subprocess on success or raise an exception on error.
1105 - Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1106 support unusual filenames (such as those containing semi-colons) in
1107 Content-Disposition headers.
1109 - Issue #4384: Added logging integration with warnings module using
1110 captureWarnings(). This change includes a NullHandler which does nothing;
1111 it will be of use to library developers who want to avoid the "No handlers
1112 could be found for logger XXX" message which can appear if the library user
1113 doesn't configure logging.
1115 - Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
1118 - Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
1119 the ctypes module is not present.
1121 - FileIO's mode attribute now always includes ``"b"``.
1123 - Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
1125 - httplib.HTTPConnection.putheader() now accepts an arbitrary number of values
1126 for any header, matching what the documentation has claimed for a while.
1128 - Issue #3774: Fixed an error when create a Tkinter menu item without command
1131 - Fixed a modulefinder crash on certain relative imports.
1133 - Issue #4150: Pdb's "up" command now works for generator frames in post-mortem
1136 - Issue #4092: Return ArgInfo as promised in the documentation from
1137 inspect.getargvalues.
1139 - Issue #3935: Properly support list subclasses in bisect's C implementation.
1141 - Issue #4014: Don't claim that Python has an Alpha release status, in addition
1142 to claiming it is Mature.
1144 - Issue #4730: Fixed the cPickle module to handle correctly astral characters
1145 when protocol 0 is used.
1147 - Issue #1594: MacOS.GetCreatorAndType now always returns a big-endian result,
1148 to be consistent with Apple tools.
1150 - Issue #900949: plat-mac/videoreader.py no longer relies on a non-existing
1153 - Issue #16278952: plat-mac/videoreader.py now correctly imports MediaDescr
1155 - Issue #1737832 : plat-mac/EasyDialog.py no longer uses the broken aepack
1158 - Issue #1149804: macostools.mkdirs now even works when another process
1159 creates one of the needed subdirectories.
1161 - Issue #900506: added --no-zipimport flag to the bundlebuilder script
1163 - Issue #841800: bundlebuilder now works with 'python -O'
1165 - Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
1166 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
1168 - Issue #5104: The socket module now raises OverflowError when 16-bit port and
1169 protocol numbers are supplied outside the allowed 0-65536 range on bind()
1170 and getservbyport().
1172 - Issue #999042: The Python compiler now handles explict global statements
1173 correctly (should be assigned using STORE_GLOBAL opcode).
1175 - Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
1176 new arguments introduced in 2.5.
1178 - Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
1179 makeunicodedata.py and regenerated the Unicode database (This fixes
1180 u'\u1d79'.lower() == '\x00').
1182 - Windows locale mapping updated to Vista.
1187 - Ttk demos added in Demo/tkinter/ttk/
1189 - Issue #4677: add two list comprehension tests to pybench.
1194 - Issue #6802: Fix build issues on MacOSX 10.6
1196 - Issue #6244: Allow detect_tkinter to look for Tcl/Tk 8.6.
1198 - Issue 5390: Add uninstall icon independent of whether file
1199 extensions are installed.
1201 - Issue 5809: Specifying both --enable-framework and --enable-shared is
1202 an error. Configure now explicity tells you about this.
1204 - Issue #3585: Add pkg-config support. It creates a python-2.7.pc file
1205 and a python.pc symlink in the $(LIBDIR)/pkgconfig directory. Patch by
1208 - Issue #6094: Build correctly with Subversion 1.7.
1210 - Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
1212 - Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
1213 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
1215 - Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
1216 the order that backends for the dbm extension are checked.
1218 - Link the shared python library with $(MODLIBS).
1220 - Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
1222 - Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
1224 - Issue #4895: Use _strdup on Windows CE.
1226 - Issue #4472: "configure --enable-shared" now works on OSX
1228 - Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
1230 - Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
1232 - Issue #4289: Remove Cancel button from AdvancedDlg.
1234 - Issue #1656675: Register a drop handler for .py* files on Windows.
1236 - Issue #4120: Exclude manifest from extension modules in VS2008.
1238 - Issue #4091: Install pythonxy.dll in system32 again.
1240 - Issue #4018: Disable "for me" installations on Vista.
1242 - Issue #3758: Add ``patchcheck`` build target to .PHONY.
1244 - Issue #4204: Fixed module build errors on FreeBSD 4.
1249 - Issue #6556: Fixed the Distutils configuration files location explanation
1252 - Issue #6801 : symmetric_difference_update also accepts |.
1253 Thanks to Carl Chenet.
1258 - Issue #6624: PyArg_ParseTuple with "s" format when parsing argument with
1259 NULL: Bogus TypeError detail string.
1261 - Issue #5954: Add a PyFrame_GetLineNumber() function to replace most uses of
1264 - Issue #5959: Add a PyCode_NewEmpty() function to create a new empty code
1265 object at a specified file, function, and line number.
1267 - Issue #1419652: Change the first argument to PyImport_AppendInittab() to
1268 ``const char *`` as the string is stored beyond the call.
1270 - Some PyBytes_* aliases have been removed because they don't exist in 3.x.
1272 - Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
1273 for negative arguments. Previously, it raised TypeError.
1275 - Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
1277 - Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
1278 the GIL is released, or owned by another thread.
1280 - Issue #4122: On Windows, fix a compilation error when using the
1281 Py_UNICODE_ISSPACE macro in an extension module.
1283 - Issue #4293: Py_AddPendingCall is now thread safe and can be used for
1284 asynchronous notifications to python from any thread. Documentation added.
1289 - Fix a segfault in expat when given a specially crafted input lead to the
1290 tokenizer not stopping.
1292 - Issue #6561: '\d' in a regex now matches only characters with
1293 Unicode category 'Nd' (Number, Decimal Digit). Previously it also
1294 matched characters with category 'No'.
1296 - Issue #1523: Remove deprecated overflow wrapping for struct.pack
1297 with an integer format code ('bBhHiIlLqQ'). Packing an out-of-range
1298 integer now consistently raises struct.error.
1300 - Issues #1530559, #1741130: Fix various struct.pack inconsistencies
1301 for the integer formats ('bBhHiIlLqQ'). In the following, '*'
1302 represents any of '=', '<', '>'.
1304 - Packing a float now always gives a Deprecation Warning.
1305 Previously it only warned for 'I', 'L', '*B', '*H', '*I', '*L'.
1307 - If x is not an int, long or float, then packing x will always
1308 result in struct.error. Previously an x with an __int__ method
1309 could be packed by 'b', 'B', 'h', 'H', 'i', 'l', '*b', '*h'
1310 ,'*i', '*l', and an x with a __long__ method could be packed by
1311 'q', 'Q', '*q', '*Q'; for x with neither __int__ nor __long__,
1312 TypeError used to be raised (with a confusing error message) for
1313 'I', 'L', '*B', '*H', '*I', '*L', and struct.error in other cases.
1315 - Issue #4873: Fix resource leaks in error cases of pwd and grp.
1317 - Issue #4751: For hashlib algorithms provided by OpenSSL, the Python
1318 GIL is now released during computation on data lengths >= 2048 bytes.
1320 - Issue #3745: Fix hashlib to always reject unicode and non buffer-api
1321 supporting objects as input no matter how it was compiled (built in
1322 implementations or external openssl library).
1324 - Issue #4397: Fix occasional test_socket failure on OS X.
1326 - Issue #4279: Fix build of parsermodule under Cygwin.
1328 - Issue #4051: Prevent conflict of UNICODE macros in cPickle.
1330 - Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
1332 - Issue #1040026: Fix os.times result on systems where HZ is incorrect.
1334 - Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
1337 - Issue #4365: Add crtassem.h constants to the msvcrt module.
1339 - Issue #4396: The parser module now correctly validates the with statement.
1341 - Issue #5228: Make functools.partial objects can now be pickled.
1346 - Issue #6806: test_platform failed under OS X 10.6.0 because ``sw_ver`` leaves
1347 off the trailing 0 in the version number.
1349 - Issue #5450: Moved tests involving loading tk from Lib/test/test_tcl to
1350 Lib/lib-tk/test/test_tkinter/test_loadtk. With this, these tests demonstrate
1351 the same behaviour as test_ttkguionly (and now also test_tk) which is to
1352 skip the tests if DISPLAY is defined but can't be used.
1354 - Issue #6152: New option '-j'/'--multiprocess' for regrtest allows running
1355 regression tests in parallel, shortening the total runtime.
1357 - Issue #5354: New test support function import_fresh_module() makes
1358 it easy to import both normal and optimised versions of modules.
1359 test_heapq and test_warnings have been adjusted to use it, tests for
1360 other modules with both C and Python implementations in the stdlib
1361 can be adjusted to use it over time.
1363 - Fix test_warnings to no longer reset the warnings filter.
1365 - Fix test_logging to no longer reset the warnings filter.
1367 - Issue #5635: Fix running test_sys with tracing enabled.
1369 - regrtest no longer treats ImportError as equivalent to SkipTest. Imports
1370 that should cause a test to be skipped are now done using import_module
1371 from test support, which does the conversion.
1373 - Issue #5083: New 'gui' resource for regrtest.
1375 - Issue #5837: Certain sequences of calls to set() and unset() for
1376 support.EnvironmentVarGuard objects restored the environment variables
1377 incorrectly on __exit__.
1379 - Issue #2389: Array objects are now pickled in a portable manner.
1382 What's New in Python 2.6 final
1383 ==============================
1385 *Release date: 01-Oct-2008*
1390 - Issue #3967: Fixed a crash in the count() and find() methods of string-like
1391 objects, when the "start" parameter is a huge value.
1393 - Issue #3965: Fixed a crash on Windows when open() is given an invalid
1394 filename or mode, and the filename is a unicode string.
1396 - Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
1401 - Issue #3965: Allow repeated calls to turtle.Screen, by making it a
1402 true singleton object.
1404 - Issue #3895: It was possible to crash the interpreter when an external timer
1405 was used with cProfile that returned an object that could not be converted
1408 - Issue #3950: Made turtle respect scale factors.
1410 - Issue #3547: Fixed ctypes structures bitfields of varying integer
1413 - Issue #3879: A regression in urllib.getproxies_enviroment was fixed.
1415 - Issue #3863: Disabled a unit test of fork being called from a thread
1416 when running on platforms known to exhibit OS bugs when attempting that.
1421 - Bug #3989: Package the 2to3 script (as 2to3.py) in the Windows
1424 - Bug #3887: Package x64 version of CRT for AMD64 Windows binaries.
1427 What's New in Python 2.6 release candidate 2?
1428 =============================================
1430 *Release date: 17-Sep-2008*
1438 - Security Issue #2: imageop did not validate arguments correctly and could
1439 segfault as a result.
1441 - Issue #3886: Possible integer overflows in the _hashopenssl module were
1447 - Issue #3850: recursion tests in Misc/find_recursion_limit.py can raise
1448 AttributeError instead of RuntimeError, depending in which C API call
1449 exactly the recursion limit is exceeded. Consequently, both exception types
1450 are caught and silenced.
1455 - Issue #3617: Include a licensing statement regarding the Microsoft
1456 C runtime in the Windows installer.
1459 What's New in Python 2.6 release candidate 1?
1460 =============================================
1462 *Release date: 12-Sep-2008*
1467 - Issue #3642: Suppress warning in obmalloc when size_t is larger than uint.
1469 - Issue #3743: In a few places, PY_FORMAT_SIZE_T was incorrectly used with
1470 PyString_FromFormat or PyErr_Format to display size_t values. The macro
1471 PY_FORMAT_SIZE_T is designed to select the correct format for the OS
1472 ``printf`` function, whereas PyString_FromFormat has an independent
1473 implementation and uses "%zd" on all platforms for size_t values.
1474 This makes a difference on win64, where ``printf`` needs "%Id" to display
1477 - Issue #3634: _weakref.ref(Exception).__init__() gave invalid return value on
1480 - Issue #3777: long() applied to a float object now always return a long
1481 object; previously an int would be returned for small values. the __long__
1482 method is allowed to return either an int or a long, but the behaviour of
1483 float objects should not change to respect backward compatibility.
1485 - Issue #3751: str.rpartition would perform a left-partition when called with
1488 - Issue #3683: Fix compilation when --without-threads is given.
1490 - Issue #3668: Fix a memory leak with the "s*" argument parser in
1491 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
1492 was correctly parsed but parsing of subsequent arguments failed.
1494 - Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
1495 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
1496 mechanism. In the process, fix a bug where isinstance() and issubclass(),
1497 when given a tuple of classes as second argument, were looking up
1498 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
1501 - Fix crashes on memory allocation failure found with failmalloc.
1503 - Fix memory leaks found with valgrind and update suppressions file.
1505 - Fix compiler warnings in opt mode which would lead to invalid memory reads.
1507 - Fix problem using wrong name in decimal module reported by pychecker.
1509 - Silenced another compiler warning about a used but not defined
1510 function 'stringlib_contains_obj'.
1512 - Added warnings on the use of ``__getslice__``, ``__setslice__``, or
1515 - Issue #3678: Correctly pass LDFLAGS and LDLAST to the linker on shared
1516 library targets in the Makefile.
1518 - Issue #1204: The configure script now tests for additional libraries
1519 that may be required when linking against readline. This fixes issues
1520 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
1525 - Aliased PyObject_Bytes to PyObject_Str.
1530 - Issue #3640: Pickling a list or a dict uses less local variables, to reduce
1531 stack usage in the case of deeply nested objects.
1533 - Issue #3629: Fix sre "bytecode" validator for an end case.
1535 - Issue #3811: The Unicode database was updated to 5.1.
1537 - Issue #3781: Further warnings.catch_warnings() cleanup to prevent
1538 silent misbehaviour when a single instance is nested in multiple
1539 with statements, or when the methods are invoked in the wrong order.
1541 - Issue #3809: Fixed spurious 'test.blah' file left behind by test_logging.
1543 - Issue #3781: Clean up the API for warnings.catch_warnings() by having it
1544 return a list or None rather than a custom object.
1546 - Issue #1638033: Cookie.Morsel gained the httponly attribute.
1548 - Issue #3535: zipfile couldn't read some zip files larger than 2GB.
1550 - Issue #3776: Deprecate the bsddb package for removal in 3.0.
1552 - Issue #3762: platform.architecture() fails if python is lanched via
1555 - Issue #3772: Fixed regression problem in StreamHandler.emit().
1557 - Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
1558 to the urlparse one. Added a PendingDeprecationWarning in the old
1559 module, it will be deprecated in the future.
1561 - Issue #2562: Fix distutils PKG-INFO writing logic to allow having
1562 non-ascii characters and Unicode in setup.py meta-data.
1564 - Issue #3726: Allow spaces in separators in logging configuration files.
1566 - Issue #3719: platform.architecture() fails if there are spaces in the
1567 path to the Python binary.
1569 - Issue 3602: Moved test.test_support.catch_warning() to
1570 warnings.catch_warnings() along with some API cleanup. Expanding the tests
1571 for catch_warnings() also led to an improvement in the raising of a
1572 DeprecationWarning related to warnings.warn_explicit().
1574 - The deprecation warnings for the old camelCase threading API were removed.
1576 - logging: fixed lack of use of encoding attribute specified on a stream.
1578 - Silenced a trivial compiler warning in the sqlite module.
1580 - Fixed two format strings in the _collections module.
1582 - Issue #3703: _fileio.FileIO gave unhelpful error message when trying to open a
1585 - Issue #3708: os.urandom no longer goes into an infinite loop when passed a
1586 non-integer floating point number.
1588 - Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
1594 - Issue #4301: Patch the logging module to add processName support, remove
1595 _check_logger_class from multiprocessing.
1597 - Issue #2975: When compiling several extension modules with Visual Studio 2008
1598 from the same python interpreter, some environment variables would grow
1601 - Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
1602 exploitation of poor argument checking.
1604 - sqlite3: Changed docstring of iterdump() to mark method as "Non-standard".
1606 - Issue #3103: Reduced globals symbols used by sqlite3 module and made sure all
1607 remaining ones have "pysqlite_" prefix.
1609 - Issue #3846: Release the GIL during sqlite3_prepare calls. This improves
1610 concurrent access to the same SQLite database from multiple
1616 - Issue #3781: Add test.test_support.check_warnings() as a convenience
1617 wrapper for warnings.catch_warnings() that makes it easier to check
1618 that expected warning messages are being reported.
1620 - Issue #3796: Some tests functions were not enabled in test_float.
1622 - Issue #3768: Move test_py3kwarn over to the new API for catch_warnings().
1627 - Issue #3833: Use a different upgrade code for Win64 installers.
1629 - Issue #2271: Set SecureCustomProperties so that installation will properly
1630 use the TARGETDIR even for unprivileged users.
1632 - Allow passing the MSI file name to merge.py.
1634 - Issue #3758: Rename the 'check' target to 'patchcheck' so as to not clash
1635 with GNU build target guidelines.
1638 What's New in Python 2.6 beta 3?
1639 ================================
1641 *Release date: 20-Aug-2008*
1646 - Issue #1878: Remove Py_TPFLAGS_HAVE_VERSION_TAG from
1647 Py_TPFLAGS_DEFAULT when not building the core. This means 3rd party
1648 extensions do not automatically benefit from the class attribute
1649 cache; they will have to explicitly add Py_TPFLAGS_HAVE_VERSION_TAG
1650 to their tp_flags field if they care. This is a backwards
1651 compatibility feature; in 3.0, all types will use the cache by
1654 - Keyword arguments can now follow starred arguments. (``f(a, *args,
1655 keyword=23)`` is now valid syntax.)
1657 - ctypes function pointers that are COM methods have a boolean True
1660 - Issue #3139: Make buffer-interface thread-safe wrt. PyArg_ParseTuple,
1661 by denying s# to parse objects that have a releasebuffer procedure,
1664 - Issue #3537: Fix an assertion failure when an empty but presized dict
1665 object was stored in the freelist.
1667 - Issue #1481296: Make long(float('nan')) and int(float('nan')) raise
1668 ValueError consistently across platforms.
1670 - Issue #3479: On platforms where sizeof(int) is smaller than sizeof(long)
1671 (64bit Unix, for example), unichr() would truncate its argument and return
1672 u'\x00' for unichr(2**32). Now it properly raises an OverflowError.
1674 - Apply security patches from Apple.
1676 - Issue #2542: Now that issubclass() may call arbitrary code, ensure that
1677 PyErr_ExceptionMatches returns 0 when an exception occurs there.
1679 - Issue #1819: function calls with several named parameters are now on
1680 average 35% faster (as measured by pybench).
1682 - Issue #2378: An unexpected UnboundLocalError or NameError could appear when
1683 the python debugger steps into a class statement: the free variables (local
1684 variables defined in an outer scope) would be deleted from the outer scope.
1686 - Issue #2620: Overflow checking when allocating or reallocating memory
1687 was not always being done properly in some python types and extension
1688 modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
1689 all been updated to perform better checks and places in the code that
1690 would previously leak memory on the error path when such an allocation
1691 failed have been fixed.
1696 - Issue #3612: Added some missing basic types in ctypes.wintypes.
1698 - The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
1699 symtable.Symbol have been deprecated for removal in 3.0 and the next release.
1701 - Issue #2234: distutils failed for some versions of the cygwin compiler. The
1702 version reported by these tools does not necessarily follow the python
1703 version numbering scheme, so the module is less strict when parsing it.
1705 - Issue #2235: Added Py3k warnings for types which will become unhashable
1706 under the stricter __hash__ inheritance rules in 3.0. Several types
1707 which did not meet the rules for hash invariants and were already
1708 unhashable in 3.0 have now been explicitly flagged as unhashable in
1709 2.6 as well (collections.Mapping, collections.Set, unittest.TestSuite,
1710 xml.dom.minidom.NamedNodeMap, numbers.Number, UserList.UserList)
1712 - Update __all__ for cookielib, csv, os, urllib2, and weakref to include things
1713 imported into the module but exposed as part of the module's API.
1715 - Remove an unneeded import of abc.ABCMeta from 'inspect'.
1717 - Remove unneeded imports of 'sys' and 'warnings' from 'io'.
1719 - Remove unneeded imports of 'warnings' from shelve, filecmp, and dummy_thread.
1721 - Issue #3575: Incremental decoder's decode function now takes bytearray
1722 by using 's*' instead of 't#'.
1724 - Issue #2222: Fixed reference leak when occurred os.rename()
1725 fails unicode conversion on 2nd parameter. (windows only)
1727 - Issue 2464. urllib2 now supports a malformation in the URL received
1730 - Silence the DeprecationWarning raised when importing mimetools in
1731 BaseHTTPServer, cgi (and rfc822), httplib.
1733 - Issue #2776: fixed small issue when handling an URL with double slash
1734 after a 302 response in the case of not going through a proxy.
1736 - Issue #2676: in the email package, content-type parsing was hanging on
1737 pathological input because of quadratic or exponential behaviour of a
1740 - Issue #3476: binary buffered reading through the new "io" library is now
1743 - Silence the DeprecationWarning of rfc822 when it is imported by mimetools
1744 since mimetools itself is deprecated. Because modules are cached, all
1745 subsequent imports of rfc822 will not raise a visible DeprecationWarning.
1747 - Issue #3134: shutil referenced undefined WindowsError symbol.
1749 - Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
1750 menu entries were not deleted.
1752 - Copied the implementation of reduce() to _functools.reduce() to have a
1753 version that did not raise a DeprecationWarning under -3.
1755 - Issue #3205: When iterating over a BZ2File fails allocating memory, raise
1756 a MemoryError rather than silently stop the iteration.
1758 - Issue #3487: sre "bytecode" validator. Passing invalid "re-bytecode"
1759 to _sre.compile() will now be rejected. This should not affect anybody
1760 since the re.compile() function never generates invalid re-bytecode.
1762 - Issue #3436: Make csv.DictReader's fieldnames attribute a property so that
1763 upon first access it can be automatically initialized from the csv file if
1764 it wasn't initialized during instantiation.
1766 - Issue #2338: Create imp.reload() to help with transitioning to Python 3.0 as
1767 the reload() built-in has been removed.
1769 - Changed code in the following modules/packages to remove warnings raised
1770 while running under the ``-3`` flag: aifc, asynchat, asyncore, bdb, bsddb,
1771 ConfigParser, cookielib, csv, difflib, distutils, DocXMLRPCServer, email,
1772 filecmp, fileinput, inspect, logging, modulefinder, pdb, pickle, profile,
1773 pstats, pydoc, re, rlcompleter, SimpleXMLRPCServer, shelve, socket,
1774 subprocess, sqlite3, tarfile, Tkinter, test.test_support, textwrap,
1775 threading, tokenize, traceback, urlparse, wsgiref, xml, xmlrpclib.
1777 - Issue #3039: Fix tarfile.TarFileCompat.writestr() which always
1778 raised an AttributeError.
1780 - Issue #2523: Fix quadratic behaviour when read()ing a binary file without
1781 asking for a specific length. This problem only affected files opened
1782 using the new "io" module, not the built-in open() function.
1784 - Issue #3449: Update decimal module to use most recent specification
1785 (v. 1.68) and tests (v. 2.58) from IBM.
1787 - Issue 3437: Bug fix in robotparser parsing of Allow: lines.
1789 - Issue 1592: Improve error reporting when operations are attempted
1792 - Deprecate the "ast" parser function aliases.
1794 - Issue #3120: On 64-bit Windows the subprocess module was truncating handles.
1796 - Issue #3303: Fix a crash in locale.strcoll() when calling it with
1799 - Issue #3302: Fix several crashes when calling locale's gettext functions
1800 with None arguments.
1802 - Issue #3389: Allow resolving dotted names for handlers in logging
1803 configuration files.
1805 - Deprecate the sunaudio module for removal in Python 3.0.
1807 - Issue #3394: zipfile.writestr sets external attributes when passed a
1808 file name rather than a ZipInfo instance, so files are extracted with
1809 mode 0600 rather than 000 under Unix.
1811 - Issue #1857: subprocess.Popen.poll gained an additional _deadstate keyword
1812 argument in python 2.5, this broke code that subclassed Popen to include its
1813 own poll method. Fixed my moving _deadstate to an _internal_poll method.
1818 - Generate the PatternGrammar pickle during "make install".
1823 - Issue #2235: the C API function PyObject_HashNotImplemented and its
1824 interaction with the tp_hash slot (added in 2.6b2) are now documented
1826 - Issue #643841: The language reference now provides more detailed
1827 coverage of the lookup process for special methods. The disclaimers
1828 regarding lack of coverage of new-style classes have also been
1829 removed, since the coverage is now fairly reasonable.
1832 What's New in Python 2.6 beta 2?
1833 ================================
1835 *Release date: 17-Jul-2008*
1840 - Issue #3156: Fix inconsistent behavior of the bytearray type: all
1841 its methods now allow for items objects that can be converted to
1842 an integer using operator.index().
1844 - Issue #3360: Fix incorrect parsing of '020000000000.0', which
1845 produced a ValueError instead of giving the correct float.
1847 - Issue #3083: Add alternate (#) formatting for bin, oct, hex output
1848 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
1850 - Issue #3008: the float type has a new instance method 'float.hex'
1851 and a new class method 'float.fromhex' to convert floating-point
1852 numbers to and from hexadecimal strings, respectively.
1854 - Issue #2235: __hash__ is once again inherited by default. To allow
1855 collections.Hashable to remain meaningful in the presence of the
1856 default hash implementation (object.__hash__), it is now possible
1857 to explicit block inheritance of hash by setting __hash__=None at
1858 the Python level, or tp_hash=PyObject_HashNotImplemented at the C
1861 - Issue #3221: Issue a RuntimeWarning instead of raising SystemError if
1862 the parent module cannot be found while performing an absolute import.
1863 This means that an incorrectly defined __package__ attribute will
1864 now only prevent relative imports in that module rather than causing
1865 all imports from that module to fail.
1867 - Issue #2517: Allow unicode messages in Exceptions again by correctly
1868 bypassing the instance dictionary when looking up __unicode__ on
1871 - Issue #3242: Fix a crash inside the print statement, if sys.stdout is
1872 set to a custom object whose write() method happens to install
1873 another file in sys.stdout.
1875 - Issue #3088: Corrected a race condition in classes derived from
1876 threading.local: the first member set by a thread could be saved in
1877 another thread's dictionary.
1879 - Issue #3004: Minor change to slice.indices(): the start and stop
1880 arguments are now treated identically, making the behaviour easier
1881 to describe and understand. For example, slice(None, -10,
1882 1).indices(9) now returns (0, 0, 1) instead of (0, -1, 1), and
1883 slice(None, 10, -1).indices(10) returns (9, 9, -1) instead of (9,
1886 - Issue #3219: Calling a function with repeated keyword arguments,
1887 f(a=2, a=23), would not cause a syntax error. This was a regression
1888 from 2.4 caused by the switch to the new compiler.
1890 - Issue #2862: Make int and float freelist management consistent with
1891 other freelists. Changes their CompactFreeList apis into
1892 ClearFreeList apis and calls them via gc.collect().
1897 - Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
1898 api functions without holding the GIL, which could lead to a fatal
1899 error when they failed.
1901 - Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
1903 - Issue #3395: fix reference in test_multiprocessing to old debugInfo method
1905 - Issue #3312: Fix two crashes in sqlite3.
1907 - Issue #1608818: Fix misbehavior in os.listdir() if readdir() fails.
1909 - Issue #3125: Remove copy_reg in multiprocessing and replace it with
1910 ForkingPickler.register() to resolve conflict with ctypes.
1912 - Issue #3090: Fixed ARCHFLAGS parsing on OS/X
1914 - Issue #3313: Fixed a crash when a failed dlopen() call does not set
1915 a valid dlerror() message.
1917 - Issue #3258: Fixed a crash when a ctypes POINTER type to an
1918 incomplete structure was created.
1920 - Issue #3339: dummy_thread.acquire() should not return None.
1922 - Issue #3285: Fractions from_float() and from_decimal() accept Integral arguments.
1924 - Issue #3301: Bisect module behaved badly when lo was negative.
1926 - Issue #839496: SimpleHTTPServer used to open text files in text mode. This is
1927 both unnecessary (HTTP allows text content to be sent in several forms) and
1928 wrong because the actual transmitted size could differ from the
1929 content-length. The problem had been corrected in the 2.4 branch, but never
1932 - Issue #2663: add filtering capability to shutil.copytree().
1934 - Issue #1622: Correct interpretation of various ZIP header fields.
1936 - Issue #1526: Allow more than 64k files to be added to Zip64 file.
1938 - Issue #1746: Correct handling of zipfile archive comments (previously
1939 archives with comments over 4k were flagged as invalid). Allow writing
1940 Zip files with archives by setting the 'comment' attribute of a ZipFile.
1942 - Issue #449227: The rlcompleter module now adds "(" to callable objects
1945 - Issue #3190: Pydoc now hides the automatic module attribute __package__ (the
1946 handling is now the same as that of other special attributes like __name__).
1948 - Issue #2885 (partial): The urllib.urlopen() function has been deprecated for
1949 removal in Python 3.0 in favor of urllib2.urlopen().
1951 - Issue #2113: Fix error in subprocess.Popen if the select system call is
1952 interrupted by a signal.
1954 - Issue #3309: Fix bz2.BZFile iterator to release its internal lock
1955 properly when raising an exception due to the bz2file being closed.
1956 Prevents a deadlock.
1958 - Issue #3094: httplib.HTTPSConnection Host: headers no longer include the
1959 redundant ":443" port number designation when the connection is using the
1960 default https port (443).
1962 - Issue #874900: after an os.fork() call the threading module state is cleaned
1963 up in the child process to prevent deadlock and report proper thread counts
1964 if the new process uses the threading module.
1969 - test.test_support.catch_warning now keeps track of all warnings it sees
1970 and is now better documented. Explicit unit tests for this context manager
1971 have been added to test_warnings.
1976 - Issue #3215: Build sqlite3 as sqlite3.dll, not sqlite3.pyd.
1982 - Document that robotparser has been renamed to urllib.robotparser in
1985 - Document that urlparse has been renamed to urllib.parse in Python 3.0.
1987 - Document that urllib2 is split across multiple modules and renamed in
1990 - Document that urllib is split across multiple modules and renamed in
1994 What's New in Python 2.6 beta 1?
1995 ================================
1997 *Release date: 18-June-2008*
2002 - Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
2003 argument being anything other than a dict or None. Also fixed a bug in error
2004 handling when 'message' and 'category' were both set to None, triggering a
2007 - Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
2008 holds the last (strong) reference to its referent.
2010 - Add future_builtins.ascii().
2012 - Several set methods now accept multiple arguments: update(), union(),
2013 intersection(), intersection_update(), difference(), and difference_update().
2015 - Issue #2898: Added sys.getsizeof() to retrieve size of objects in bytes.
2017 - New environment variable PYTHONIOENCODING.
2019 - Patch #2488: Add sys.maxsize.
2021 - Issue #2353: file.xreadlines() now emits a Py3k warning.
2023 - Issue #2863: generators now have a ``gen.__name__`` attribute that
2024 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
2025 ``func.func_code.co_name``. The repr() of a generator now also
2028 - Issue #2831: enumerate() now has a ``start`` argument.
2030 - Issue #2801: fix bug in the float.is_integer method where a
2031 ValueError was sometimes incorrectly raised.
2033 - Issue #2790: sys.flags was not properly exposing its bytes_warning
2036 - Issue #2196: hasattr() now lets exceptions which do not inherit
2037 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
2040 - Added checks for integer overflows, contributed by Google. Some are
2041 only available if asserts are left in the code, in cases where they
2042 can't be triggered from Python code.
2047 - Issue #1179: [CVE-2007-4965] Integer overflow in imageop module.
2049 - Issue #3116: marshal.dumps() had quadratic behavior for strings > 32Mb.
2051 - Issue #2138: Add factorial() to the math module.
2053 - The heapq module does comparisons using LT instead of LE. This
2054 makes its implementation match that used by list.sort().
2056 - Issue #2819: add full-precision summation function to math module,
2057 based on Hettinger's ASPN Python Cookbook recipe.
2059 - Issue #2592: delegate nb_index and the floor/truediv slots in
2062 - Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
2065 - Support for Windows 9x has been removed from the winsound module.
2067 - bsddb module updated to version 4.7.3.
2068 http://www.jcea.es/programacion/pybsddb.htm#bsddb3-4.7.3. This
2069 code should be compatible with Python 3.0.
2071 - Issue #2858: Fix potential memory corruption when
2072 bsddb.db.DBEnv.lock_get and other bsddb.db object constructors
2073 raised an exception.
2075 - Issue #2669: bsddb/__init__.py iteration no longer silently fails when
2076 the database has changed size during iteration. It now raises a
2077 RuntimeError in the same manner as a dictionary.
2079 - Issue #2870: cmathmodule.c compile error.
2081 - Added a threading.Thread.ident property.
2086 - logging.config: Removed out-of-date comment in _install_handlers and
2087 used issubclass in place of equality comparison of classes.
2089 - Issue #2722: Now the os.getcwd() supports very long path names.
2091 - Issue #2888: Fixed the behaviour of pprint when working with nested
2092 structures, to match the behaviour of 2.5 and 3.0 (now follows the common
2095 - Issue #1817: cgi now correctly handles the querystring on POST requests
2097 - Issue #3136: fileConfig()'s disabling of old loggers is now conditional via
2098 an optional disable_existing_loggers parameter, but the default value is
2099 such that the old behaviour is preserved. Thanks to Leandro Lucarella for
2102 - Issue #3126: StreamHandler and FileHandler check before calling "flush" and
2103 "close" that the stream object has these, using hasattr (thanks to bobf for
2106 - Issue #2912: platform.uname now tries to determine unknown information even if
2109 - The rfc822 module has been deprecated for removal in 3.0.
2111 - The mimetools module has been deprecated for removal in 3.0.
2113 - The ctypes.byref function now takes an optional second parameter
2114 which allows to specify an offset in bytes for the constructed
2115 pointer-like object.
2117 - Added the ast module.
2119 - Added the multiprocessing module, PEP 371.
2121 - Factored out the indentation cleaning from inspect.getdoc() into
2122 inspect.cleandoc() to ease standalone use.
2124 - Issue #1798: Add ctypes calling convention that allows safe access
2127 - Issue #2404: ctypes objects support the new pep3118 buffer interface.
2129 - Patch #2125: Add GetInteger and GetString methods for
2130 msilib.Record objects.
2132 - Issue #2782: The datetime module's strftime methods now accept
2133 unicode format strings just as time.strftime always has.
2135 - The sgmllib and htmllib modules have been deprecated for removal
2138 - Issue #3011: locale module alias table was updated to the latest
2139 version from the X.org locale.alias file.
2141 - Issue #1797 (partial fix): ctypes NULL function pointers have a
2142 False boolean value now.
2144 - Issue #2985: Allow 64-bit integer responses (``<i8>``) in XMLRPC
2147 - Issue #2877: The UserString.MutableString class has been removed in
2150 - Do not close external file objects passed to tarfile.open(mode='w:bz2')
2151 when the TarFile is closed.
2153 - Issue #2959: For consistency with other file-like objects, gzip's
2154 GzipFile.close() can now be called multiple times without raising
2157 - Issue #1390: Raise ValueError in toxml when an invalid comment would
2158 otherwise be produced.
2160 - Issue #2914: TimedRotatingFileHandler now takes an optional keyword
2161 argument "utc" to use UTC time rather than local time.
2163 - Issue #2929: TimedRotatingFileHandler was using the wrong path when
2164 deleting old log files (filename only instead of full path).
2166 - Issue #1775025: You can now specify zipfile members to open(),
2167 read() or extract() via a ZipInfo instance. This allows handling
2168 duplicate filenames in zipfiles.
2170 - Issue #961805: Fix Text.edit_modified() in Tkinter.
2172 - Issue #1793: Function ctypes.util.find_msvcrt() added that returns
2173 the name of the C runtime library that Python uses.
2174 ctypes.util.find_library(name) now call this function when name is
2177 - The statvfs module has been deprecated for removal in Python 3.0.
2179 - The sunaudiodev and SUNAUDIODEV modules have been deprecated for
2180 removal in Python 3.0.
2182 - The WAIT module from IRIX has been deprecated for removal in Python
2185 - The torgb module from IRIX has been deprecated for removal in Python
2188 - The SV module from IRIX has been deprecated for removal in Python
2191 - The readcd module from IRIX has been deprecated for removal in
2194 - The panelparser module from IRIX has been deprecated for removal in
2197 - The panel module from IRIX has been deprecated for removal in Python
2200 - The jpeg module from IRIX has been deprecated for removal in Python
2203 - The IOCTL module from IRIX has been deprecated for removal in Python
2206 - The IN module from IRIX has been deprecated for removal in Python
2209 - The imgfile module from IRIX has been deprecated for removal in
2212 - The GLWS module from IRIX has been deprecated for removal in Python
2215 - The GET module from IRIX has been deprecated for removal in Python
2218 - The fm module from IRIX has been deprecated for removal in Python
2221 - The FL, flp, and fl modules from IRIX have been deprecated for
2222 removal in Python 3.0.
2224 - The FILE module on IRIX has been deprecated for removal in Python
2227 - The ERRNO module on IRIX has been deprecated for removal in Python
2230 - The DEVICE, GL, gl, and cgen modules (which indirectly includes
2231 cgensupport) have been deprecated for removal in Python 3.0.
2233 - The CL, CL_old, and cl modules for IRIX have been deprecated for
2234 removal in Python 3.0.
2236 - The cdplayer module for IRIX has been deprecated for removal in
2239 - The cddb module for IRIX has been deprecated for removal in Python
2242 - The cd and CD modules for IRIX have been deprecated for removal in
2245 - The al and AL modules for IRIX have been deprecated for removal in
2248 - Issue #1713041: fix pprint's handling of maximum depth.
2250 - The timing module has been deprecated for removal in Python 3.0.
2252 - The sv module has been deprecated for removal in Python 3.0.
2254 - The multifile module has been deprecated as per PEP 4.
2256 - The imageop module has been deprecated for removal in Python 3.0.
2258 - Issue #2250: Exceptions raised during evaluation of names in
2259 rlcompleter's ``Completer.complete()`` method are now caught and
2262 - Issue #2659: Added ``break_on_hyphens`` option to textwrap
2265 - The mhlib module has been deprecated for removal in Python 3.0.
2267 - The linuxaudiodev module has been deprecated for removal in Python
2270 - The ihooks module has been deprecated for removal in Python 3.0.
2272 - The fpformat module has been deprecated for removal in Python 3.0.
2274 - The dl module has been deprecated for removal in Python 3.0.
2276 - The Canvas module has been deprecated for removal in Python 3.0.
2278 - The compiler package has been deprecated for removal in Python 3.0.
2280 - The Bastion and rexec modules have been deprecated for removal in
2283 - The bsddb185 module has been deprecated for removal in Python 3.0.
2285 - The pure module has been deprecated for removal in Python 3.0.
2287 - Issue #2487: change the semantics of math.ldexp(x, n) when n is too
2288 large to fit in a C long. ldexp(x, n) now returns a zero (with
2289 suitable sign) if n is large and negative; previously, it raised
2292 - The toaiff module has been deprecated for removal in Python 3.0.
2294 - The test.testall module has been deprecated for removal in Python
2297 - The new module has been deprecated for removal in Python 3.0.
2299 - The user module has been deprecated for removal in Python 3.0.
2301 - The stringold module has been deprecated for removal in Python 3.0.
2303 - The mutex module has been deprecated for removal in Python 3.0.
2305 - The imputil module has been deprecated for removal in Python 3.0.
2307 - test.test_support.catch_warning() gained a 'record' argument.
2309 - os.path.walk is deprecated in favor of os.walk.
2311 - pdb gained the "until" command.
2313 - The Mac Modules (including Carbon) have been deprecated for removal
2316 - Library: on MacOS X you can now set ``ARCHFLAGS`` in the shell
2317 environment to control the '-arch' flags that are used to build
2318 an extension. This was added for compatibility with Apple's build
2321 - The bundled OSX-specific copy of libbffi is now in sync with the version
2322 shipped with PyObjC 2.0 and includes support for x86_64 and ppc64 platforms.
2324 - The threading module gained aliases for names that will be removed in the
2330 - The Windows installer now includes Tk 8.5, bzip2 1.0.5, and SQLite 3.5.9.
2332 - Patch #1722225: Support QNX 6.
2334 - ``Lib/lib-old`` is now added to sys.path.
2336 - On MacOS X it is now possible to install the framework in 64-bit
2337 mode or even as a 4-way universal binary (that is, PPC, i386,
2338 PPC64 and x86_64 support in one binary).
2340 This is controlled by the configure argument ``--with-universal-archs``:
2342 - ``--with-universal-archs=all``: install 4-way universal
2344 - ``--with-universal-archs=32-bit``: install 2-way universal, 32-bit (the default)
2346 - ``--with-universal-archs=64-bit``: install 2-way universal, 64-bit
2348 This option should be used in combination with ``--enable-universalsdk=``.
2350 NOTE: 64-bit and 4-way builds are only suppported on Mac OS X 10.5 (or later).
2356 - Add ``PyType_Modified()`` as a public API to clear the type cache.
2358 - The PyBytes functions have been renamed to PyByteArray.
2360 - The PyString functions have been renamed to PyBytes. A batch of
2361 defines were added so that the linker still sees the original
2365 What's New in Python 2.6 alpha 3?
2366 =================================
2368 *Release date: 08-May-2008*
2373 - Issue #2719: backported the ``next()`` builtin from Python 3.
2375 - Issue #2681: The octal literal ``0o8`` was incorrecly acctepted. Now
2376 it properly raises a SyntaxError.
2378 - Issue #2617: Reserved -J and -X arguments for Jython, IronPython and
2379 other implementations of Python.
2381 - Implemented PEP 370: Per user site-packages directory.
2386 - Issue #2670: Fix a failure in urllib2.build_opener(), when passed
2387 two handlers that derive the same default base class.
2389 - Added kill, terminate and send_signal(sig) to subprocess.Popen.
2391 - Added phase(z) -> phi, polar(z) -> r, phi and rect(r, phi) -> z to
2394 - Four new methods were added to the math and cmath modules: acosh,
2395 asinh, atanh and log1p.
2397 - zlib.decompressobj().flush(value) no longer crashes the interpreter
2398 when passed a value less than or equal to zero.
2400 - Issue #1631171: Re-implement the 'warnings' module in C (the
2401 original Python code has been kept as backup). This will allow for
2402 using the 'warning's machinery in such places as the parser where
2403 use of pure Python code is not possible. Both the ``showarning()``
2404 and ``formatwarning()`` gain an optional 'line' argument which is
2405 not called by default for backwards-compatibility reasons. Setting
2406 ``warnings.showwarning()`` to an implementation that lacks support
2407 for the ``line`` argument will raise a DeprecationWarning.
2412 - The audiodev module has been deprecated for removal in Python 3.0.
2414 - Issue #2750: Add the 'json' package. Based on simplejson 1.9 and
2415 contributed by Bob Ippolito.
2417 - Issue #1734346: Support Unicode file names for zipfiles.
2419 - Issue #2581: distutils: Vista UAC/elevation support for
2422 - Issue #2635: Fix bug in 'fix_sentence_endings' textwrap.fill option,
2423 where an extra space was added after a word containing (but not
2424 ending in) '.', '!' or '?'.
2426 - Add from_buffer() and from_buffer_copy() class methods to ctypes
2429 - Issue #2682: ctypes callback functions no longer contain a cyclic
2430 reference to themselves.
2432 - The getpass module has been improved on Unix. It now uses /dev/tty
2433 by default and uses stderr instead of stdout. A GetPassWarning is
2434 issued when input echo cannot be controlled.
2436 - Issue #2014: Allow XML-RPC datetime objects to have dates before
2439 - Issue #2439: Added new function pkgutil.get_data(), which is a
2440 convenience wrapper for the PEP 302 get_data() API.
2442 - Issue #2616: The ctypes.pointer() and ctypes.POINTER() functions are
2443 now implemented in C for better performance.
2445 - Issue #2408: The ``_types`` module, which was used as in
2446 implementation detail of the public ``types`` module, has been
2447 removed and replaced by pure python code.
2449 - Issue #2513: distutils on Windows is now capable of cross-compiling
2450 extension modules between 32 and 64 bit platforms. See the distutls
2451 build documentation for more information.
2453 - Issue #815646: Individual file objects may now be used from multiple
2454 threads at once without fear of crashing the Python interpreter. If
2455 file.close() is called while an object is in use by another thread
2456 an IOError exception will be raised and the file will not be closed.
2458 - The bundled libffi copy is now in sync with the recently released
2459 libffi3.0.5 version, apart from some small changes to
2460 Modules/_ctypes/libffi/configure.ac.
2462 - Issue #2385: distutils.core.run_script() makes __file__ available,
2463 so the controlled environment will more closely mirror the typical
2464 script environment. This supports setup.py scripts that refer to
2470 - Issue #2550: The approach used by client/server code for obtaining
2471 ports to listen on in network-oriented tests has been refined in an
2472 effort to facilitate running multiple instances of the entire
2473 regression test suite in parallel without issue.
2474 test_support.bind_port() has been fixed such that it will always
2475 return a unique port -- which wasn't always the case with the
2476 previous implementation, especially if socket options had been set
2477 that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The
2478 new implementation of bind_port() will actually raise an exception
2479 if it is passed an AF_INET/SOCK_STREAM socket with either the
2480 SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if
2481 available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on
2482 the socket it's been passed. This currently only applies to
2483 Windows. This option prevents any other sockets from binding to the
2484 host/port we've bound to, thus removing the possibility of the
2485 'non-deterministic' behaviour, as Microsoft puts it, that occurs
2486 when a second SOCK_STREAM socket binds and accepts to a host/port
2487 that's already been bound by another socket. The optional preferred
2488 port parameter to bind_port() has been removed. Under no
2489 circumstances should tests be hard coding ports!
2491 test_support.find_unused_port() has also been introduced, which will
2492 pass a temporary socket object to bind_port() in order to obtain an
2493 unused port. The temporary socket object is then closed and
2494 deleted, and the port is returned. This method should only be used
2495 for obtaining an unused port in order to pass to an external program
2496 (i.e. the -accept [port] argument to openssl's s_server mode) or as
2497 a parameter to a server-oriented class that doesn't give you direct
2498 access to the underlying socket used.
2500 Finally, test_support.HOST has been introduced, which should be used
2501 for the host argument of any relevant socket calls (i.e. bind and
2504 The following tests were updated to following the new conventions:
2505 test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib,
2506 test_poplib, test_ftplib, test_telnetlib, test_socketserver,
2507 test_asynchat and test_socket_ssl.
2509 It is now possible for multiple instances of the regression test
2510 suite to run in parallel without issue.
2515 - Issue #1496032: On alpha, use -mieee when gcc is the compiler.
2517 - Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
2518 gcc is used as compiler.
2520 - Issue #2573: On MacOS X it is now possible to install the framework
2521 with a different name using --with-framework-name=NAME.
2526 - Added implementation of copysign, acosh, asinh, atanh and log1p to
2527 the new files Include/pymath.h and Python/pymath.h for platforms
2528 which provide the functions through their libm. The files also
2529 contains several helpers and constants for math.
2531 - Added a new convenience macro, PyErr_WarnPy3k, for issuing Py3k warnings.
2534 What's New in Python 2.6 alpha 2?
2535 =================================
2537 *Release date: 02-Apr-2008*
2542 - Issue #1733757: The interpreter would hang on shutdown if the
2543 tracing function set by sys.settrace is still active and happens to
2544 call threading.currentThread().
2546 - Patch #1442: properly report exceptions when the PYTHONSTARTUP file
2549 - The compilation of a class nested in another class used to leak one
2550 reference on the outer class name.
2552 - Patch #1810: compile() can now compile _ast trees as returned by
2553 ``compile(..., PyCF_ONLY_AST)``.
2555 - Patch #2426: Added sqlite3.Connection.iterdump method to allow easy
2556 dumping of databases. Contributed by Paul Kippes at PyCon 2008.
2558 - Patch #2477: Added from __future__ import unicode_literals.
2560 - Added backport of bytearray type.
2562 - Issue #2355: add Py3k warning for buffer().
2564 - Issue #1477: With narrow Unicode builds, the unicode escape sequence
2565 \Uxxxxxxxx did not accept values outside the Basic Multilingual
2566 Plane. This affected raw unicode literals and the
2567 'raw-unicode-escape' codec. Now UTF-16 surrogates are generated in
2568 this case, like normal unicode literals and the 'unicode-escape'
2571 - Issue #2348: add Py3k warning for file.softspace.
2573 - Issue #2346/#2347: add Py3k warnings for __methods__ and
2576 - Issue #2358: Add a Py3k warning on sys.exc_clear() usage.
2578 - Issue #2400: Allow relative imports to "import *".
2580 - Issue #1745: Backport print function with ``from __future__ import
2583 - Issue #2332: add new attribute names for instance method objects.
2584 The two changes are: im_self -> __self__ and im_func -> __func__
2586 - Issue #2379: Raise a Py3K warning for __getitem__ or __getslice__ on
2587 exception instances.
2589 - Issue #2371: Add a Py3k warning when catching an exception that
2590 doesn't derive from BaseException.
2592 - Issue #2341: Add a Py3k warning when raising an exception that
2593 doesn't derive from BaseException.
2595 - Issue #2321: use pymalloc for unicode object string data to reduce
2596 memory usage in some circumstances.
2598 - PEP 3127: octal literals now start with "0o". Old-style octal
2599 literals are still valid. There are binary literals with a prefix of
2600 "0b". This also affects int(x, 0).
2602 - Issue #2359: Adding deprecation warnings for array.{read,write}.
2604 - Issue #1779871: GNU gcc can now build Python on OS X because the
2605 flags -Wno-long-double, -no-cpp-precomp, and -mno-fused-madd are no
2608 - Add a warning when asserting a non-empty tuple which is always true.
2610 - Issue #2179: speed up with statement execution by storing the exit
2611 method on the stack instead of in a temporary variable (patch by
2614 - Issue #2238: Some syntax errors in *args and **kwargs expressions
2615 could give bogus error messages.
2617 - Issue #2143: Fix embedded readline() hang on SSL socket EOF.
2622 - Patch #2240: Implement signal.setitimer and signal.getitimer.
2627 - Issue #2315: logging.handlers: TimedRotatingFileHandler now accounts
2628 for daylight savings time in calculating the next rollover.
2630 - Issue #2316: logging.handlers: TimedRotatingFileHandler now
2631 calculates rollovers correctly even when nothing is logged for a
2634 - Issue #2317: logging.handlers: TimedRotatingFileHandler now uses
2635 improved logic for removing old files.
2637 - Issue #2495: tokenize.untokenize now inserts a space between two
2638 consecutive string literals; previously, ["" ""] was rendered as
2639 [""""], which is incorrect python code.
2641 - Issue #2248: return the result of the QUIT command. from
2644 - Backport of Python 3.0's io module.
2646 - Issue #2482: Make sure that the coefficient of a Decimal is always
2647 stored as a str instance, not as a unicode instance. This ensures
2648 that str(Decimal) is always an instance of str.
2650 - Issue #2478: fix failure of decimal.Decimal(0).sqrt()
2652 - Issue #2432: give DictReader the dialect and line_num attributes
2653 advertised in the docs.
2655 - Issue #2460: Make Ellipsis object copyable.
2657 - Issue #1681432: Add triangular distribution to the random module
2659 - Issue #2136: urllib2's auth handler now allows single-quoted realms
2660 in the WWW-Authenticate header.
2662 - Issue #2434: Enhanced platform.win32_ver() to also work on Python
2663 installation which do not have the win32all package installed.
2665 - Added support to platform.uname() to also report the machine and
2666 processor information on Windows XP and later. As a result,
2667 platform.machine() and platform.processor() will report this
2668 information as well.
2670 - The library implementing the 2to3 conversion, lib2to3, was added to
2671 the standard distribution.
2673 - Issue #1747858: Fix chown to work with large uid's and gid's on
2676 - Issue #1202: zlib.crc32 and zlib.adler32 no longer return different
2677 values on 32-bit vs. 64-bit python interpreters. Both were correct,
2678 but they now both return a signed integer object for consistency.
2680 - Issue #1158: add %f format (fractions of a second represented as
2681 microseconds) to datetime objects. Understood by both strptime and
2684 - Issue #705836: struct.pack(">f", x) now raises OverflowError on all
2685 platforms when x is too large to fit into an IEEE 754 float;
2686 previously it only raised OverflowError on non IEEE 754 platforms.
2688 - Issues #2166, #1741 and #1531505: now distutils deals with HOME
2689 correctly under win32
2691 - Patch #1858: distutils: added multiple server support in .pypirc
2693 - Issue #1106316: pdb.post_mortem()'s parameter, "traceback", is now
2694 optional: it defaults to the traceback of the exception that is
2695 currently being handled (is mandatory to be in the middle of an
2696 exception, otherwise it raises ValueError).
2698 - Issue #1193577: A .shutdown() method has been added to SocketServers
2699 which terminates the .serve_forever() loop.
2701 - Issue #2220: handle rlcompleter attribute match failure more
2704 - Issue #2225: py_compile, when executed as a script, now returns a
2705 non- zero status code if not all files could be compiled
2708 - Bug #1725737: In distutils' sdist, exclude RCS, CVS etc. also in the
2709 root directory, and also exclude .hg, .git, .bzr, and _darcs.
2711 - Issue #1872: The struct module typecode for _Bool has been changed
2714 - The bundled libffi copy is now in sync with the recently released
2715 libffi3.0.4 version, apart from some small changes to
2716 Modules/_ctypes/libffi/configure.ac. On OS X, preconfigured libffi
2717 files are used. On all linux systems the --with-system-ffi
2718 configure option defaults to "yes".
2720 - Issue #1577: shutil.move() now calls os.rename() if the destination
2721 is a directory instead of copying-then-remove-source.
2726 - test_nis no longer fails when test.test_support.verbose is true and
2727 NIS is not set up on the testing machine.
2729 - Output comparison tests are no longer supported.
2731 - Rewrite test_errno to use unittest and no longer be a no-op.
2733 - GHOP 234: Convert test_extcall to doctest.
2735 - GHOP 290: Convert test_dbm and test_dummy_threading to unittest.
2737 - GHOP 293: Convert test_strftime, test_getargs, and test_pep247 to
2740 - Issue #2055: Convert test_fcntl to unittest.
2742 - Issue 1960: Convert test_gdbm to unittest.
2744 - GHOP 294: Convert test_contains, test_crypt, and test_select to
2747 - GHOP 238: Convert test_tokenize to use doctest.
2749 - GHOP 237: Rewrite test_thread using unittest.
2751 - Patch #2232: os.tmpfile might fail on Windows if the user has no
2752 permission to create files in the root directory.
2757 - A new script 2to3 is now installed, to run the 2.x to 3.x converter.
2759 - Python/memmove.c and Python/strerror.c have been removed; both
2760 functions are in the C89 standard library.
2762 - Patch #2284: Add -x64 option to rt.bat.
2767 - Patch #2477: Added PyParser_ParseFileFlagsEx() and
2768 PyParser_ParseStringFlagsFilenameEx().
2771 What's New in Python 2.6 alpha 1?
2772 =================================
2774 *Release date: 29-Feb-2008*
2779 - Issue #2051: pyc and pyo files are no longer created with permission
2780 644. The mode is now inherited from the py file.
2782 - Issue #2067: file.__exit__() now calls subclasses' close() method.
2784 - Patch #1759: Backport of PEP 3129 class decorators.
2786 - Issue #1881: An internal parser limit has been increased. Also see
2787 issue 215555 for a discussion.
2789 - Added the future_builtins module, which contains hex() and oct().
2790 These are the PEP 3127 version of these functions, designed to be
2791 compatible with the hex() and oct() builtins from Python 3.0. They
2792 differ slightly in their output formats from the existing, unchanged
2793 Python 2.6 builtins. The expected usage of the future_builtins
2795 from future_builtins import hex, oct
2797 - Issue #1600: Modifed PyOS_ascii_formatd to use at most 2 digit
2798 exponents for exponents with absolute value < 100. Follows C99
2799 standard. This is a change on Windows, which would use 3 digits.
2800 Also, added 'n' to the formats that PyOS_ascii_formatd understands,
2801 so that any alterations it does to the resulting string will be
2802 available in stringlib/formatter.h (for float.__format__).
2804 - Implemented PEP 3101, Advanced String Formatting. This adds a new
2805 builtin format(); a format() method for str and unicode; a
2806 __format__() method to object, str, unicode, int, long, float, and
2807 datetime; the class string.Formatter; and the C API
2810 - Fixed several potential crashes, all caused by specially crafted
2811 __del__ methods exploiting objects in temporarily inconsistent
2814 - Issue #2115: Important speedup in setting __slot__ attributes. Also
2815 prevent a possible crash: an Abstract Base Class would try to access
2816 a slot on a registered virtual subclass.
2818 - Fixed repr() and str() of complex numbers with infinity or nan as
2819 real or imaginary part.
2821 - Clear all free lists during a gc.collect() of the highest generation
2822 in order to allow pymalloc to free more arenas. Python may give back
2823 memory to the OS earlier.
2825 - Issue #2045: Fix an infinite recursion triggered when printing a
2826 subclass of collections.defaultdict, if its default_factory is set
2829 - Fixed a minor memory leak in dictobject.c. The content of the free
2830 list was not freed on interpreter shutdown.
2832 - Limit free list of method and builtin function objects to 256
2835 - Patch #1953: Added ``sys._compact_freelists()`` and the C API
2836 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
2837 to compact the internal free lists of pre-allocted ints and floats.
2839 - Issue #1983: Fixed return type of fork(), fork1() and forkpty()
2840 calls. Python expected the return type int but the fork familie
2843 - Issue #1678380: Fix a bug that identifies 0j and -0j when they
2844 appear in the same code unit.
2846 - Issue #2025: Add tuple.count() and tuple.index() methods to comply
2847 with the collections.Sequence API.
2849 - Patch #1970 by Antoine Pitrou: Speedup unicode whitespace and
2852 - Added ``PyType_ClearCache()`` and ``sys._clear_type_cache`` to clear
2853 the internal lookup cache for ref leak tests.
2855 - Patch #1473257: generator objects gain a gi_code attribute. This is
2856 the same object as the func_code attribute of the function that
2857 produced the generator.
2859 - Issue #1920: "while 0" statements were completely removed by the
2860 compiler, even in the presence of an "else" clause, which is
2861 supposed to be run when the condition is false. Now the compiler
2862 correctly emits bytecode for the "else" suite.
2864 - A few crashers fixed: weakref_in_del.py (issue #1377858);
2865 loosing_dict_ref.py (issue #1303614, test67.py);
2866 borrowed_ref_[34].py (not in tracker).
2868 - Issue #1069410: The "can't load dll" message box on Windows is
2869 suppressed while an extension is loaded by calling SetErrorMode in
2870 dynload_win.c. The error is still reported properly.
2872 - Issue #1915: Python compiles with --enable-unicode=no again. However
2873 several extension methods and modules do not work without unicode
2876 - Issue #1882: when compiling code from a string, encoding cookies in the
2877 second line of code were not always recognized correctly.
2879 - Issue #1679: "0x" was taken as a valid integer literal.
2881 - Issue #1865: ``bytes`` as an alias for ``str`` and b"" as an alias "" were
2884 - sys.float_info / PyFloat_GetInfo: The floating point information
2885 object was converted from a dict to a specialized structseq object.
2887 - Patch #1816: Added sys.flags structseq. It exposes the status of
2888 most command line arguments and PYTHON* environment variables.
2890 - Objects/structseq.c: Implemented new structseq representation. The
2891 patch makes structseqs (e.g. the return value of os.stat) more
2894 - Patch #1700288: added a type attribute cache that caches method
2895 accesses, resulting in speedups in heavily object-oriented code.
2897 - Bug #1776: __import__() no longer accepts filenames on any platform.
2898 The first parameter to __import__() must be a valid module name.
2900 - Patch #1668: renamed THREADDEBUG envvar to PYTHONTHREADDEBUG.
2902 - Patch #602345: Add -B command line option, PYTHONDONTWRITEBYTECODE
2903 envvar and sys.dont_write_bytecode attribute. All these can be set
2904 to forbid Python to attempt to write compiled bytecode files.
2906 - Improve some exception messages when Windows fails to load an
2907 extension module. Now we get for example '%1 is not a valid Win32
2908 application' instead of 'error code 193'.
2910 - Bug #1481296: Fixed long(float('nan')) != 0L.
2912 - Issue #1640: Added math.isinf(x), math.isnan(x) and math.copysign(x,
2915 - Issue #1635: Platform independent creation and representation of NaN
2916 and INF. float("nan"), float("inf") and float("-inf") now work on
2917 every platform with IEEE 754 semantics.
2919 - Compiler now generates simpler and faster code for dictionary
2920 literals. The oparg for BUILD_MAP now indicates an estimated
2921 dictionary size. There is a new opcode, STORE_MAP, for adding
2922 entries to the dictionary.
2924 - Issue #1638: %zd configure test fails on Linux.
2926 - Issue #1620: New property decorator syntax was modifying the
2927 decorator in place instead of creating a new decorator object.
2929 - Issue #1538: Avoid copying string in split/rsplit if the split char
2932 - Issue #1553: An erroneous __length_hint__ can make list() raise a
2935 - PEP 366: Allow explicit relative imports when executing modules
2936 inside packages with the -m switch via a new module level
2937 __package__ attribute.
2939 - Issue #1402: Fix a crash on exit, when another thread is still
2940 running, and if the deallocation of its frames somehow calls the
2941 PyGILState_Ensure() / PyGILState_Release() functions.
2943 - Expose the Py_Py3kWarningFlag as sys.py3kwarning.
2945 - Issue #1445: Fix a SystemError when accessing the ``cell_contents``
2946 attribute of an empty cell object.
2948 - Issue #1460: The utf-7 incremental decoder did not accept truncated
2949 input. It now correctly saves its state between chunks of data.
2951 - Patch #1739468: Directories and zipfiles containing a __main__.py
2952 file can now be directly executed by passing their name to the
2953 interpreter. The directory/zipfile is automatically inserted as the
2954 first entry in sys.path.
2956 - Issue #1265: Fix a problem with sys.settrace, if the tracing
2957 function uses a generator expression when at the same time the
2958 executed code is closing a paused generator.
2960 - sets and frozensets now have an isdisjoint() method.
2962 - optimize the performance of builtin.sum().
2964 - Fix warnings found by the new version of the Coverity checker.
2966 - The enumerate() builtin function is no longer bounded to sequences
2967 smaller than LONG_MAX. Formerly, it raised an OverflowError. Now,
2968 automatically shifts from ints to longs.
2970 - Issue #1686386: Tuple's tp_repr did not take into account the
2971 possibility of having a self-referential tuple, which is possible
2972 from C code. Nor did object's tp_str consider that a type's tp_str
2973 could do something that could lead to an inifinite recursion.
2974 Py_ReprEnter() and Py_EnterRecursiveCall(), respectively, fixed the
2977 - Issue #1164: It was possible to trigger deadlock when using the
2978 'print' statement to write to a file since the GIL was not released
2979 as needed. Now PyObject_Print() does the right thing along with
2980 various tp_print implementations of the built-in types and those in
2981 the collections module.
2983 - Issue #1147: Exceptions were directly allowing string exceptions in
2984 their throw() method even though string exceptions no longer
2987 - Issue #1096: Prevent a segfault from getting the repr of a very
2988 deeply nested list by using the recursion counter.
2990 - Issue #1202533: Fix infinite recursion calls triggered by calls to
2991 PyObject_Call() never calling back out to Python code to trigger
2992 recursion depth updates/checks. Required the creation of a static
2993 RuntimeError instance in case normalizing an exception put the
2994 recursion check value past its limit. Fixes crashers
2995 infinite_rec_(1|2|4|5).py.
2997 - Patch #1031213: Decode source line in SyntaxErrors back to its
2998 original source encoding.
3000 - Patch #1673759: add a missing overflow check when formatting floats
3003 - Prevent expandtabs() on string and unicode objects from causing a
3004 segfault when a large width is passed on 32-bit platforms.
3006 - Issue #1733488: Fix compilation of bufferobject.c on AIX.
3008 - Issue #1722485: remove docstrings again when running with -OO.
3010 - Add new attribute names for function objects. All the func_* become
3011 __*__ attributes. (Some already existed, e.g., __doc__ and
3014 - Add -3 option to the interpreter to warn about features that are
3015 deprecated and will be changed/removed in Python 3.0.
3017 - Patch #1686487: you can now pass any mapping after '**' in function
3020 - except clauses may now be spelled either "except E, target:" or
3021 "except E as target:". This is to provide forwards compatibility
3024 - Deprecate BaseException.message as per PEP 352.
3026 - Issue #1303614: don't expose object's __dict__ when the dict is
3027 inherited from a builtin base.
3029 - When __slots__ are set to a unicode string, make it work the same as
3030 setting a plain string, ie don't expand to single letter identifiers.
3032 - Request #1191699: Slices can now be pickled.
3034 - Request #1193128: str.translate() now allows a None argument for
3035 translations that only remove characters without re-mapping the
3036 remaining characters.
3038 - Patch #1682205: a TypeError while unpacking an iterable is no longer
3039 masked by a generic one with the message "unpack non-sequence".
3041 - Remove unused file Python/fmod.c.
3043 - Bug #1683368: The object.__init__() and object.__new__() methods are
3044 now stricter in rejecting excess arguments. The only time when
3045 either allows excess arguments is when it is not overridden and the
3046 other one is. For backwards compatibility, when both are
3047 overridden, it is a deprecation warning (for now; maybe a Py3k
3048 warning later). Also, type.__init__() insists on the same signature
3049 as supported by type.__new__().
3051 - Patch #1675423: PyComplex_AsCComplex() now tries to convert an
3052 object to complex using its __complex__() method before falling back
3053 to the __float__() method. Therefore, the functions in the cmath
3054 module now can operate on objects that define a __complex__()
3057 - Patch #1623563: allow __class__ assignment for classes with
3058 __slots__. The old and the new class are still required to have the
3061 - Patch #1642547: Fix an error/crash when encountering syntax errors
3062 in complex if statements.
3064 - Patch #1462488: Python no longer segfaults when
3065 ``object.__reduce_ex__()`` is called with an object that is faking
3068 - Patch #1680015: Don't modify __slots__ tuple if it contains an
3071 - Patch #1444529: the builtin compile() now accepts keyword arguments.
3073 - Bug #1678647: write a newline after printing an exception in any
3074 case, even when converting the value to a string failed.
3076 - The dir() function has been extended to call the __dir__() method on
3077 its argument, if it exists. If not, it will work like before. This
3078 allows customizing the output of dir() in the presence of a
3081 - Patch #922167: Python no longer segfaults when faced with infinitely
3082 self-recursive reload() calls (as reported by bug #742342).
3084 - Patch #1675981: remove unreachable code from ``type.__new__()``
3087 - Patch #1491866: change the complex() constructor to allow
3088 parthensized forms. This means complex(repr(x)) now works instead of
3089 raising a ValueError.
3091 - Patch #703779: unset __file__ in __main__ after running a file. This
3092 makes the filenames the warning module prints much more sensible
3093 when a PYTHONSTARTUP file is used.
3095 - Variant of patch #697613: don't exit the interpreter on a SystemExit
3096 exception if the -i command line option or PYTHONINSPECT environment
3097 variable is given, but break into the interactive interpreter just
3098 like on other exceptions or normal program exit.
3100 - Patch #1638879: don't accept strings with embedded NUL bytes in
3103 - Bug #1674503: close the file opened by execfile() in an error
3106 - Patch #1674228: when assigning a slice (old-style), check for the
3107 sq_ass_slice instead of the sq_slice slot.
3109 - When printing an unraisable error, don't print exceptions. before
3110 the name. This duplicates the behavior whening normally printing
3113 - Bug #1653736: Properly discard third argument to
3114 slot_nb_inplace_power.
3116 - PEP 352: Raising a string exception now triggers a TypeError.
3117 Attempting to catch a string exception raises DeprecationWarning.
3119 - Bug #1377858: Fix the segfaulting of the interpreter when an object
3120 created a weakref on itself during a __del__ call for new-style
3121 classes (classic classes still have the bug).
3123 - Bug #1579370: Make PyTraceBack_Here use the current thread, not the
3124 frame's thread state.
3126 - patch #1630975: Fix crash when replacing sys.stdout in
3129 - Prevent seg fault on shutdown which could occur if an object raised
3132 - Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, to
3133 avoid relying on atexit.
3135 - Bug #1590891: random.randrange don't return correct value for big
3138 - Patch #1586791: Better exception messages for some operations on
3139 strings, tuples and lists.
3141 - Bug #1067760: Deprecate passing floats to file.seek.
3143 - Bug #1591996: Correctly forward exception in instance_contains().
3145 - Bug #1588287: fix invalid assertion for `1,2` in debug builds.
3147 - Bug #1576657: when setting a KeyError for a tuple key, make sure
3148 that the tuple isn't used as the "exception arguments tuple".
3150 - Bug #1565514: SystemError not raised on too many nested blocks.
3152 - Bug #1576174: WindowsError now displays the windows error code
3153 again, no longer the posix error code.
3155 - Patch #1549049: Support long values in structmember, issue warnings
3156 if the assigned value for structmember fields gets truncated.
3158 - Update the peephole optimizer to remove more dead code (jumps after
3159 returns) and inline unconditional jumps to returns.
3161 - Bug #1545497: when given an explicit base, int() did ignore NULs
3162 embedded in the string to convert.
3164 - Bug #1569998: break inside a try statement (outside a loop) is now
3165 recognized and rejected.
3167 - list.pop(x) accepts any object x following the __index__ protocol.
3169 - A number of places, including integer negation and absolute value,
3170 were fixed to not rely on undefined behaviour of the C compiler
3173 - Bug #1566800: make sure that EnvironmentError can be called with any
3174 number of arguments, as was the case in Python 2.4.
3176 - Patch #1567691: super() and new.instancemethod() now don't accept
3177 keyword arguments any more (previously they accepted them, but
3180 - Fix a bug in the parser's future statement handling that led to
3181 "with" not being recognized as a keyword after, e.g., this
3182 statement: from __future__ import division, with_statement
3184 - Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).
3186 - Fix %zd string formatting on Mac OS X so it prints negative numbers.
3188 - Allow exception instances to be directly sliced again.
3190 - Bug #1551432: Exceptions do not define an explicit __unicode__
3191 method. This allows calling unicode() on exceptions classes
3192 directly to succeed.
3194 - Bug #1542051: Exceptions now correctly call PyObject_GC_UnTrack.
3195 Also make sure that every exception class has __module__ set to
3198 - Bug #1550983: emit better error messages for erroneous relative
3199 imports (if not in package and if beyond toplevel package).
3201 - Overflow checking code in integer division ran afoul of new gcc
3202 optimizations. Changed to be more standard-conforming.
3204 - Patch #1542451: disallow continue anywhere under a finally.
3206 - Patch #1546288: fix seg fault in dict_equal due to ref counting bug.
3208 - The return tuple from str.rpartition(sep) is (tail, sep, head) where
3209 head is the original string if sep was not found.
3211 - Bug #1520864: unpacking singleton tuples in list comprehensions and
3212 generator expressions (x for x, in ... ) works again. Fixing this
3213 problem required changing the .pyc magic number. This means that
3214 .pyc files generated before 2.5c2 will be regenerated.
3216 - ``with`` and ``as`` are now keywords.
3218 - Bug #1664966: Fix crash in exec if Unicode filename can't be
3221 - Issue #1537: Changed GeneratorExit's base class from Exception to
3224 - Issue #1703448: A joined thread could show up in the
3225 threading.enumerate() list after the join() for a brief period until
3232 - Patch #2274: Add heapq.heappushpop().
3234 - Add inspect.isabstract(object) to fix bug #2223
3236 - Add a __format__ method to Decimal, to support PEP 3101.
3238 - Add a timing parameter when using trace.Trace to print out
3241 - Issue #1627: httplib now ignores negative Content-Length headers.
3243 - Issue #900744: If an invalid chunked-encoding header is sent by a
3244 server, httplib will now raise IncompleteRead and close the
3245 connection instead of raising ValueError.
3247 - Issue #1492: The content type of BaseHTTPServer error messages can
3250 - Issue #1781: ConfigParser now does not let you add the "default" section
3253 - Removed uses of dict.has_key() from distutils, and uses of
3254 callable() from copy_reg.py, so the interpreter now starts up
3255 without warnings when '-3' is given. More work like this needs to
3256 be done in the rest of the stdlib.
3258 - Issue #1916: added isgenerator() and isgeneratorfunction() to
3261 - Issue #1224: Fixed bad url parsing when path begins with double
3264 - ctypes instances that are not or do not contain pointers can now be
3267 - Patch #1966: Break infinite loop in httplib when the servers
3268 implements the chunked encoding incorrectly.
3270 - Rename rational.py to fractions.py and the rational.Rational class
3271 to fractions.Fraction, to avoid the name clash with the abstract
3272 base class numbers.Rational. See discussion in issue #1682.
3274 - The pickletools module now provides an optimize() function that
3275 eliminates unused PUT opcodes from a pickle string.
3277 - Patch #2021: Allow tempfile.NamedTemporaryFile and
3278 SpooledTemporaryFile to be used in with statements by correctly
3279 supporting the context management protocol.
3281 - Patch #1979: Add rich comparisons to Decimal, and make Decimal
3282 comparisons involving a NaN follow the IEEE 754 standard.
3284 - Issue #2004: tarfile.py: Use mode 0700 for temporary directories and
3285 default permissions for missing directories.
3287 - Issue #175006: The debugger used to skip the condition of a "while"
3288 statement after the first iteration. Now it correctly steps on the
3289 expression, and breakpoints on the "while" statement are honored on
3292 - Issue #1765140: add an optional delay argument to FileHandler and
3293 its subclasses. Defaults to false (existing behaviour), but if true,
3294 defers opening the file until the first call to emit().
3296 - The pprint module now supports sets and frozensets.
3298 - Issue #1221598: add optional callbacks to ftplib.FTP's storbinary()
3299 and storlines() methods. (Contributed by Phil Schwartz)
3301 - Issue #1715: include sub-extension modules in pydoc's text output.
3303 - Issue #1836: fix an off-by-one bug in TimedRotatingHandler's
3304 rollover time calculation.
3306 - Issue #1021: fix a bug to allow basicConfig to accept NOTSET as a
3309 - Issue #932563: add LoggerAdapter convenience class to make it easier
3310 to add contextual information in logging output.
3312 - Issue #1760556: fix a bug to avoid FileHandler throwing an exception
3315 - Bug #1530959: distutils' build command now uses different build
3316 directory when building extension modules against versions of Python
3317 compiled with ``--with-pydebug``.
3319 - Issue #1555501: move plistlib from plat-mac directory to general
3322 - Issue #1269: fix a bug in pstats.add_callers() and add a unit test
3325 - Issue #1669: don't allow shutil.rmtree() to be called on a symlink
3328 - Issue #1664522: in urllib, don't read non-existing directories in
3329 ftp mode, returning a 0-byte file -- raise an IOError instead.
3331 - Issue #856047: respect the ``no_proxy`` environment variable when
3332 using the ``http_proxy`` etc. environment variables in urllib.
3334 - Issue #1178141: add a getcode() method to the addinfourls that
3335 urllib.open() returns so that you can retrieve the HTTP status code.
3337 - Issue #1003: Fix zipfile decryption check, it would fail zip files
3338 with extended local headers.
3340 - Issue #1189216: Fix the zipfile module to work on archives with
3341 headers past the 2**31 byte boundary.
3343 - Issue #1336: fix a race condition in subprocess.Popen if the garbage
3344 collector kicked in at the wrong time that would cause the process
3345 to hang when the child wrote to stderr.
3347 - Issue #1146: fix how textwrap breaks a long word that would start in
3348 the last column of a line.
3350 - Issue #1693149: trace.py --ignore-module - accept multiple
3351 comma-separated modules to be given.
3353 - Issue #1822: MIMEMultipart.is_multipart() behaves correctly for a
3354 just-created (and empty) instance. Thanks Jonathan Share.
3356 - Issue #1861: Added an attribute to the sched module which returns an
3357 ordered list of upcoming events (displayed as named tuples).
3359 - Issue #1837: The queue module now also supports a LIFO queue and a
3362 - Patch #1048820: Add insert-mode editing to curses.textpad.Textbox
3363 (patch by Stefan Wehr). Also, fix an off-by-one bug in
3366 - Issue #1831: ctypes now raises a TypeError if conflicting positional
3367 and named arguments are passed to a Structure or Union initializer.
3368 When too many positional arguments are passed, also a TypeError is
3369 raised instead of a ValueError.
3371 - Convert the internal ctypes array type cache to a WeakValueDict so
3372 that array types do not live longer than needed.
3374 - Issue #1786: pdb should use its own stdin/stdout around an exec call
3375 and when creating a recursive instance.
3377 - Issue #1698398: ZipFile.printdir() crashed because the format string
3378 expected a tuple type of length six instead of time.struct_time
3381 - Issue #1780: The Decimal constructor now accepts arbitrary leading
3382 and trailing whitespace when constructing from a string.
3383 Context.create_decimal no longer accepts trailing newlines.
3385 - Decimal.as_tuple(), difflib.find_longest_match() and inspect
3386 functions that returned a tuple now return a named tuple.
3388 - Doctest now returns results as a named tuple for readability:
3389 (0, 7) --> TestResults(failed=0, attempted=7)
3391 - Issue #846388:q re.match is interruptible now, which is particularly
3392 good for long regular expression matches.
3394 - Patch #1137: allow setting buffer_size attribute on pyexpat Parser
3395 objects to set the character data buffer size.
3397 - Issue #1757: The hash of a Decimal instance is no longer affected by
3398 the current context.
3400 - Patch #467924: add ZipFile.extract() and ZipFile.extractall() in the
3403 - Issue #1646: Make socket support the TIPC protocol.
3405 - Bug #1742: return os.curdir from os.path.relpath() if both arguments
3406 are equal instead of raising an exception.
3408 - Patch #1637: fix urlparse for URLs like 'http://x.com?arg=/foo'.
3410 - Patch #1698: allow '@' in username parsed by urlparse.py.
3412 - Issue #1735: TarFile.extractall() now correctly sets directory
3413 permissions and times.
3415 - Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a mountpoint.
3417 - Bug #1687: Fxed plistlib.py restricts <integer> to Python int when
3420 - Issue #1700: Regular expression inline flags incorrectly handle
3421 certain unicode characters.
3423 - Issue #1689: PEP 3141, numeric abstract base classes.
3425 - Tk issue #1851526: Return results from Python callbacks to Tcl as
3428 - Issue #1642: Fix segfault in ctypes when trying to delete attributes.
3430 - Issue #1727780: Support loading pickles of random.Random objects
3431 created on 32-bit systems on 64-bit systems, and vice versa. As a
3432 consequence of the change, Random pickles created by Python 2.6
3433 cannot be loaded in Python 2.5.
3435 - Issue #1455: The distutils package now supports VS 2005 and VS 2008
3436 for both the msvccompiler and cygwincompiler.
3438 - Issue #1531: tarfile.py: Read fileobj from the current offset, do
3439 not seek to the start.
3441 - Issue #1534: Added a dictionary sys.float_info with information
3442 about the internal floating point type to the sys module.
3444 - Issue #1429818: patch for trace and doctest modules so they play
3447 - doctest made a bad assumption that a package's __loader__.get_data()
3448 method used universal newlines.
3450 - Issue #1705170: contextlib.contextmanager was still swallowing
3451 StopIteration in some cases. This should no longer happen.
3453 - Issue #1292: On alpha, arm, ppc, and s390 linux systems the
3454 --with-system-ffi configure option defaults to "yes".
3456 - IN module for FreeBSD 8 is added and preexisting FreeBSD 6 and 7
3459 - Issues #1181, #1287: unsetenv() is now called when the
3460 os.environ.pop() and os.environ.clear() methods are used.
3462 - ctypes will now work correctly on 32-bit systems when Python is
3463 configured with --with-system-ffi.
3465 - Patch #1203: ctypes now does work on OS X when Python is built with
3466 --disable-toolbox-glue.
3468 - collections.deque() now supports a "maxlen" argument.
3470 - itertools.count() is no longer bounded to LONG_MAX. Formerly, it
3471 raised an OverflowError. Now, automatically shifts from ints to
3474 - Added itertools.product() which forms the Cartesian product of the
3477 - Added itertools.combinations() and itertools.permutations().
3479 - Patch #1541463: optimize performance of cgi.FieldStorage operations.
3481 - Decimal is fully updated to the latest Decimal Specification
3484 - Bug #1153: repr.repr() now doesn't require set and dictionary items
3485 to be orderable to properly represent them.
3487 - A 'c_longdouble' type was added to the ctypes module.
3489 - Bug #1709599: Run test_1565150 only if the file system is NTFS.
3491 - When encountering a password-protected robots.txt file the
3492 RobotFileParser no longer prompts interactively for a username and
3493 password (bug 813986).
3495 - TarFile.__init__() no longer fails if no name argument is passed and
3496 the fileobj argument has no usable name attribute (e.g. StringIO).
3498 - The functools module now provides 'reduce', for forward
3499 compatibility with Python 3000.
3501 - Server-side SSL support and cert verification added, by Bill
3504 - socket.ssl deprecated; use new ssl module instead.
3506 - uuid creation is now threadsafe.
3508 - EUC-KR codec now handles the cheot-ga-keut composed make-up hangul
3511 - GB18030 codec now can encode additional two-byte characters that are
3514 - Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
3516 - Bug #1704793: Return UTF-16 pair if unicodedata.lookup cannot
3517 represent the result in a single character.
3519 - Bug #978833: Close https sockets by releasing the _ssl object.
3521 - Change location of the package index to pypi.python.org/pypi
3523 - Bug #1701409: Fix a segfault in printing ctypes.c_char_p and
3524 ctypes.c_wchar_p when they point to an invalid location. As a
3525 sideeffect the representation of these instances has changed.
3527 - tarfile.py: Added "exclude" keyword argument to TarFile.add().
3529 - Bug #1734723: Fix repr.Repr() so it doesn't ignore the maxtuple
3532 - The urlopen function of urllib2 now has an optional timeout
3533 parameter (note that it actually works with HTTP, HTTPS, FTP and
3536 - In ftplib, the FTP.ntransfercmd method, when in passive mode, now
3537 uses the socket.create_connection function, using the timeout
3538 specified at connection time.
3540 - Bug #1728403: Fix a bug that CJKCodecs StreamReader hangs when it
3541 reads a file that ends with incomplete sequence and sizehint
3542 argument for .read() is specified.
3544 - Bug #1730389: Change time.strptime() to use ``\s+`` instead of
3545 ``\s*`` when matching spaces in the specified format argument.
3547 - Bugs #1668596/#1720897: distutils now copies data files even if
3548 package_dir is empty.
3550 - sha now raises a DeprecationWarning upon import.
3552 - md5 now raises a DeprecationWarning upon import.
3554 - Issue #1385: The hmac module now computes the correct hmac when
3555 using hashes with a block size other than 64 bytes (such as sha384
3558 - mimify now raises a DeprecationWarning upon import.
3560 - MimeWriter now raises a DeprecationWarning upon import.
3562 - tarfile.py: Improved unicode support. Unicode input names are now
3563 officially supported. Added "errors" argument to the TarFile class.
3565 - urllib.ftpwrapper class now accepts an optional timeout.
3567 - shlex.split() now has an optional "posix" parameter.
3569 - The posixfile module now raises a DeprecationWarning.
3571 - Remove the gopherlib module. This also leads to the removal of
3572 gopher support in urllib/urllib2.
3574 - Fix bug in marshal where bad data would cause a segfault due to lack
3575 of an infinite recursion check.
3577 - Removed plat-freebsd2 and plat-freebsd3 directories (and IN.py in
3580 - HTML-escape the plain traceback in cgitb's HTML output, to prevent
3581 the traceback inadvertently or maliciously closing the comment and
3582 injecting HTML into the error page.
3584 - The popen2 module and os.popen* are deprecated. Use the subprocess
3587 - Added an optional credentials argument to SMTPHandler, for use with
3588 SMTP servers which require authentication.
3590 - Patch #1695948: Added optional timeout parameter to SocketHandler.
3592 - Bug #1652788: Minor fix for currentframe.
3594 - Patch #1598415: Added WatchedFileHandler to better support external
3595 log file rotation using e.g. newsyslog or logrotate. This handler is
3596 only useful in Unix/Linux environments.
3598 - Bug #1706381: Specifying the SWIG option "-c++" in the setup.py file
3599 (as opposed to the command line) will now write file names ending in
3602 - As specified in RFC 2616, an HTTP response like 2xx indicates that
3603 the client's request was successfully received, understood, and
3604 accepted. Now in these cases no error is raised in urllib (issue
3607 - Bug #1290505: time.strptime's internal cache of locale information
3608 is now properly recreated when the locale is changed.
3610 - Patch #1685563: remove (don't add) duplicate paths in
3611 distutils.MSVCCompiler.
3613 - Added a timeout parameter to the constructor of other protocols
3614 (telnetlib, ftplib, smtplib and poplib). This is second part of the
3615 work started with create_connection() and timeout in httplib, and
3616 closes patch #723312.
3618 - Patch #1676823: Added create_connection() to socket.py, which may be
3619 called with a timeout, and use it from httplib (whose HTTPConnection
3620 and HTTPSConnection now accept an optional timeout).
3622 - Bug #978833: Revert r50844, as it broke _socketobject.dup.
3624 - Bug #1675967: re patterns pickled with Python 2.4 and earlier can
3625 now be unpickled with Python 2.5 and newer.
3627 - Patch #1630118: add a SpooledTemporaryFile class to tempfile.py.
3629 - Patch #1273829: os.walk() now has a "followlinks" parameter. If set
3630 to True (which is not the default), it visits symlinks pointing to
3633 - Bug #1681228: the webbrowser module now correctly uses the default
3634 GNOME or KDE browser, depending on whether there is a session of one
3635 of those present. Also, it tries the Windows default browser before
3636 trying Mozilla variants.
3638 - Patch #1339796: add a relpath() function to os.path.
3640 - Patch #1681153: the wave module now closes a file object it opened if
3641 initialization failed.
3643 - Bug #767111: fix long-standing bug in urllib which caused an
3644 AttributeError instead of an IOError when the server's response
3645 didn't contain a valid HTTP status line.
3647 - Patch #957650: "%var%" environment variable references are now
3648 properly expanded in ntpath.expandvars(), also "~user" home
3649 directory references are recognized and handled on Windows.
3651 - Patch #1429539: pdb now correctly initializes the __main__ module
3652 for the debugged script, which means that imports from __main__ work
3655 - The nonobvious commands.getstatus() function is now deprecated.
3657 - Patch #1393667: pdb now has a "run" command which restarts the
3658 debugged Python program, optionally with different arguments.
3660 - Patch #1649190: Adding support for _Bool to ctypes as c_bool.
3662 - Patch #1530482: add pydoc.render_doc() which returns the
3663 documentation for a thing instead of paging it to stdout, which
3666 - Patch #1533909: the timeit module now accepts callables in addition
3667 to strings for the code to time and the setup code. Also added two
3668 convenience functions for instantiating a Timer and calling its
3671 - Patch #1537850: tempfile.NamedTemporaryFile now has a "delete"
3672 parameter which can be set to False to prevent the default
3673 delete-on-close behavior.
3675 - Patch #1581073: add a flag to textwrap that prevents the dropping of
3676 whitespace while wrapping.
3678 - Patch #1603688: ConfigParser.SafeConfigParser now checks values that
3679 are set for invalid interpolation sequences that would lead to
3680 errors on reading back those values.
3682 - Added support for the POSIX.1-2001 (pax) format to
3683 tarfile.py. Extended and cleaned up the test suite. Added a new
3686 - Patch #1449244: Support Unicode strings in
3687 email.message.Message.{set_charset,get_content_charset}.
3689 - Patch #1542681: add entries for "with", "as" and "CONTEXTMANAGERS"
3690 to pydoc's help keywords.
3692 - Patch #1555098: use str.join() instead of repeated string
3693 concatenation in robotparser.
3695 - Patch #1635454: the csv.DictWriter class now includes the offending
3696 field names in its exception message if you try to write a record
3697 with a dictionary containing fields not in the CSV field names list.
3699 - Patch #1668100: urllib2 now correctly raises URLError instead of
3700 OSError if accessing a local file via the file:// protocol fails.
3702 - Patch #1677862: Require a space or tab after import in .pth files.
3704 - Patch #1192590: Fix pdb's "ignore" and "condition" commands so they
3705 trap the IndexError caused by passing in an invalid breakpoint
3708 - Patch #1599845: Add an option to disable the implicit calls to
3709 server_bind() and server_activate() in the constructors for
3710 TCPServer, SimpleXMLRPCServer and DocXMLRPCServer.
3712 - Bug #1531963: Make SocketServer.TCPServer's server_address always be
3713 equal to calling getsockname() on the server's socket. Fixed by
3716 - Patch #742598: Add .timeout attribute to SocketServer that calls
3717 .handle_timeout() when no requests are received.
3719 - Bug #1651235: When a tuple was passed to a ctypes function call,
3720 Python would crash instead of raising an error.
3722 - Bug #1646630: ctypes.string_at(buf, 0) and ctypes.wstring_at(buf, 0)
3723 returned string up to the first NUL character.
3725 - Patch #957003: Implement smtplib.LMTP.
3727 - Patch #1481079: add support for HTTP_REFERER to CGIHTTPServer.
3729 - Patch #1675424: Added tests for uncovered code in the zipfile
3730 module. The KeyError raised by Zipfile.getinfo for nonexistent
3731 names now has a descriptive message.
3733 - Bug #1115886: os.path.splitext('.cshrc') gives now ('.cshrc', '').
3735 - unittest now verifies more of its assumptions. In particular,
3736 TestCase and TestSuite subclasses (not instances) are no longer
3737 accepted in TestSuite.addTest(). This should cause no
3738 incompatibility since it never made sense with ordinary subclasses
3739 -- the failure just occurred later, with a more cumbersome
3742 - Patch #787789: allow to pass custom TestRunner instances to
3743 unittest's main() function.
3745 - Patches #1550273, #1550272: fix a few bugs in unittest and add a
3746 comprehensive test suite for the module.
3748 - Patch #1001604: glob.glob() now returns unicode filenames if it was
3749 given a unicode argument and os.listdir() returns unicode filenames.
3751 - Patch #1673619: setup.py identifies extension modules it doesn't
3752 know how to build and those it knows how to build but that fail to
3755 - Patch #912410: Replace HTML entity references for attribute values
3758 - Patch #1663234: you can now run doctest on test files and modules
3759 using "python -m doctest [-v] filename ...".
3761 - Patch #1121142: Implement ZipFile.open.
3763 - Taught setup.py how to locate Berkeley DB on Macs using MacPorts.
3765 - Added heapq.merge() for merging sorted input streams.
3767 - Added collections.namedtuple() for assigning field names to tuples.
3769 - Added itertools.izip_longest().
3771 - Have the encoding package's search function dynamically import using
3772 absolute import semantics.
3774 - Patch #1647484: Renamed GzipFile's filename attribute to name.
3776 - Patch #1517891: Mode 'a' for ZipFile now creates the file if it
3779 - Patch #698833: Support file decryption in zipfile.
3781 - Patch #685268: Consider a package's __path__ in imputil.
3783 - Patch #1463026: Support default namespace in XMLGenerator.
3785 - Patch #1571379: Make trace's --ignore-dir facility work in the face
3786 of relative directory names.
3788 - Bug #1600860: Search for shared python library in LIBDIR, not
3789 lib/python/config, on "linux" and "gnu" systems.
3791 - Patch #1652681: tarfile.py: create nonexistent files in append mode
3792 and allow appending to empty files.
3794 - Bug #1124861: Automatically create pipes if GetStdHandle fails in
3797 - Patch #1634778: add missing encoding aliases for iso8859_15 and
3800 - Patch #1638243: the compiler package is now able to correctly
3801 compile a with statement; previously, executing code containing a
3802 with statement compiled by the compiler package crashed the
3805 - Bug #1643943: Fix time.strptime's support for the %U directive.
3807 - Patch #1507247: tarfile.py: use current umask for intermediate
3810 - Patch #1627441: close sockets properly in urllib2.
3812 - Bug #494589: make ntpath.expandvars behave according to its
3815 - Changed platform module API python_version_tuple() to actually
3816 return a tuple (it used to return a list).
3818 - Added new platform module APIs python_branch(), python_revision(),
3819 python_implementation() and linux_distribution().
3821 - Added support for IronPython and Jython to the platform module.
3823 - The sets module has been deprecated. Use the built-in set/frozenset
3826 - Bug #1610795: make ctypes.util.find_library work on BSD systems.
3828 - Fixes for 64-bit Windows: In ctypes.wintypes, correct the
3829 definitions of HANDLE, WPARAM, LPARAM data types. Make
3830 parameterless foreign function calls work.
3832 - The version number of the ctypes package changed to "1.1.0".
3834 - Bug #1627575: logging: Added _open() method to FileHandler which can
3835 be used to reopen files. The FileHandler instance now saves the
3836 encoding (which can be None) in an attribute called "encoding".
3838 - Bug #411881: logging.handlers: bare except clause removed from
3839 SMTPHandler.emit. Now, only ImportError is trapped.
3841 - Bug #411881: logging.handlers: bare except clause removed from
3842 SocketHandler.createSocket. Now, only socket.error is trapped.
3844 - Bug #411881: logging: bare except clause removed from
3845 LogRecord.__init__. Now, only ValueError, TypeError and
3846 AttributeError are trapped.
3848 - Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj
3851 - Patch #1182394 from Shane Holloway: speed up HMAC.hexdigest.
3853 - Patch #1262036: Prevent TarFiles from being added to themselves
3854 under certain conditions.
3856 - Patch #1230446: tarfile.py: fix ExFileObject so that read() and
3857 tell() work correctly together with readline().
3859 - Patch #1484695: The tarfile module now raises a HeaderError
3860 exception if a buffer given to frombuf() is invalid.
3862 - Bug #1503765: Fix a problem in logging.config with spaces in comma-
3863 separated lists read from logging config files.
3865 - Patch #1604907: Fix problems in logging.handlers caused at logging
3866 shutdown when syslog handlers fail to initialize because of syslogd
3869 - Patch #1608267: fix a race condition in os.makedirs() if the
3870 directory to be created is already there.
3872 - Patch #1610437: fix a tarfile bug with long filename headers.
3874 - Patch #1371075: Make ConfigParser accept optional dict type for
3875 ordering, sorting, etc.
3877 - Bug #1563807: _ctypes built on AIX fails with ld ffi error.
3879 - Bug #1598620: A ctypes Structure cannot contain itself.
3881 - Patch #1070046: Marshal new-style objects like InstanceType in
3884 - cStringIO.truncate(-1) now raises an IOError, like StringIO and
3887 - Patch #1472877: Fix Tix subwidget name resolution.
3889 - Patch #1594554: Always close a tkSimpleDialog on ok(), even if an
3892 - Patch #1538878: Don't make tkSimpleDialog dialogs transient if the
3893 parent window is withdrawn.
3895 - Bug #1597824: return the registered function from atexit.register()
3896 to facilitate usage as a decorator.
3898 - Patch #1360200: Use unmangled_version RPM spec field to deal with
3901 - Patch #1359217: Process 2xx response in an ftplib transfer that
3902 precedes an 1xx response.
3904 - Patch #1355023: support whence argument for GzipFile.seek.
3906 - Patch #1065257: Support passing open files as body in
3907 HTTPConnection.request().
3909 - Bug #1569790: mailbox.py: Maildir.get_folder() and MH.get_folder()
3910 weren't passing the message factory on to newly created Maildir/MH
3913 - Patch #1514543: mailbox.py: In the Maildir class, report errors if
3914 there's a filename clash instead of possibly losing a message.
3915 (Patch by David Watson.)
3917 - Patch #1514544: Try to ensure that messages/indexes have been
3918 physically written to disk after calling .flush() or
3919 .close(). (Patch by David Watson.)
3921 - Patch #1592250: Add elide argument to Tkinter.Text.search.
3923 - Patch #838546: Make terminal become controlling in pty.fork().
3925 - Patch #1351744: Add askyesnocancel helper for tkMessageBox.
3927 - Patch #1060577: Extract list of RPM files from spec file in
3930 - Bug #1586613: fix zlib and bz2 codecs' incremental en/decoders.
3932 - Patch #1583880: fix tarfile's problems with long names and posix/
3935 - Bug #1586448: the compiler module now emits the same bytecode for
3936 list comprehensions as the builtin compiler, using the LIST_APPEND
3939 - Fix codecs.EncodedFile which did not use file_encoding in 2.5.0, and
3940 fix all codecs file wrappers to work correctly with the "with"
3941 statement (bug #1586513).
3943 - Lib/modulefinder.py now handles absolute and relative imports
3946 - Patch #1567274: Support SMTP over TLS.
3948 - Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that ctypes
3949 isn't considered as requiring executable stacks.
3951 - ctypes callback functions only support 'fundamental' data types as
3952 result type. Raise an error when something else is used. This is a
3953 partial fix for Bug #1574584.
3955 - Fix turtle so that time.sleep is imported for the entire library.
3956 Allows the demo2 function to be executed on its own instead of only
3957 when the module is run as a script.
3959 - Bug #813342: Start the IDLE subprocess with -Qnew if the parent is
3960 started with that option.
3962 - Bug #1565150: Fix subsecond processing for os.utime on Windows.
3964 - Support for MSVC 8 was added to bdist_wininst.
3966 - Bug #1446043: correctly raise a LookupError if an encoding name
3967 given to encodings.search_function() contains a dot.
3969 - Bug #1560617: in pyclbr, return full module name not only for
3970 classes, but also for functions.
3972 - Bug #1457823: cgi.(Sv)FormContentDict's constructor now takes
3973 keep_blank_values and strict_parsing keyword arguments.
3975 - Bug #1566602: correct failure of posixpath unittest when $HOME ends
3978 - Bug #1565661: in webbrowser, split() the command for the default
3979 GNOME browser in case it is a command with args.
3981 - Made the error message for time.strptime when the data and
3982 format do match be more clear.
3984 - Fix a bug in traceback.format_exception_only() that led to an error
3985 being raised when print_exc() was called without an exception set.
3986 In version 2.4, this printed "None", restored that behavior.
3988 - Make webbrowser.BackgroundBrowser usable in Windows (it wasn't
3989 because the close_fds arg to subprocess.Popen is not supported).
3991 - Reverted patch #1504333 to sgmllib because it introduced an infinite
3994 - Patch #1553314: Fix the inspect.py slowdown that was hurting IPython
3995 & SAGE by adding smarter caching in inspect.getmodule()
3997 - Fix missing import of the types module in logging.config.
3999 - Patch #1550886: Fix decimal module context management implementation
4000 to match the localcontext() example from PEP 343.
4002 - Bug #1545341: The 'classifier' keyword argument to the Distutils
4003 setup() function now accepts tuples as well as lists.
4005 - Bug #1541863: uuid.uuid1 failed to generate unique identifiers on
4006 systems with low clock resolution.
4008 - Bug #1531862: Do not close standard file descriptors in subprocess.
4010 - idle: Honor the "Cancel" action in the save dialog (Debian bug
4013 - Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
4014 the first chunk fed to the decoder started with a BOM, but was
4015 longer than 3 bytes.
4017 - The implementation of UnicodeError objects has been simplified
4018 (start and end attributes are now stored directly as Py_ssize_t
4021 - Issue #829951: In the smtplib module, SMTP.starttls() now complies
4022 with RFC 3207 and forgets any knowledge obtained from the server not
4023 obtained from the TLS negotiation itself. Patch contributed by Bill
4026 - Issue #1339: The smtplib.SMTP class has been refactored a bit such
4027 that the SMTP.starttls() caller no longer needs to call ehlo()
4028 beforehand. SMTP.starttls() now raises an exception of the server
4029 does not claim to support starttls. Adds the
4030 SMTP.ehlo_or_helo_if_needed() method. Patch contributed by Bill
4033 - Patch #1089358: Add signal.siginterrupt, a wrapper around
4039 - Patch #1657: added select.epoll and select.kqueue.
4041 - Patch #1506171: added operator.methodcaller().
4043 - Patch #1826: operator.attrgetter() now supports dotted attribute paths.
4045 - Patch #1957: syslogmodule: Release GIL when calling syslog(3).
4047 - Bug #2112: mmap.error is now a subclass of EnvironmentError and not
4048 a direct EnvironmentError.
4050 - Bug #2111: mmap segfaults when trying to write a block opened with
4053 - Bug #2063: correct order of utime and stime in os.times() result on
4056 - Patch #1736: Fix file name handling of _msi.FCICreate.
4058 - Updated ``big5hkscs`` codec to the HKSCS revision of 2004.
4060 - Issue #1940: make it possible to use curses.filter() before
4061 curses.initscr() as the documentation says.
4063 - Backport of _fileio module from Python 3.0.
4065 - Patch #1087741: mmap.mmap is now a class, not a factory function. It
4066 is also subclassable now.
4068 - Patch #1648: added ``sys.getprofile()`` and ``sys.gettrace()``.
4070 - Patch #1663329: added ``os.closerange()`` function to quickly close
4071 a range of file descriptors without considering errors.
4073 - Patch #976880: ``mmap`` objects now have an ``rfind`` method that
4074 works as expected. ``mmap.find`` also takes an optional ``end``
4077 - _winreg's HKEY object has gained __enter__ and __exit__ methods to
4078 support the context manager protocol. The _winreg module also
4079 gained a new function ``ExpandEnvironmentStrings`` to expand
4082 - itertools.starmap() now accepts any iterable input. Previously, it
4083 required the function inputs to be tuples.
4085 - itertools.chain() now has an alternate constructor,
4086 chain.from_iterable().
4088 - Issue #1646: Make socket support TIPC. The socket module now has
4089 support for TIPC under Linux, see http://tipc.sf.net/ for more
4092 - Added interface for Windows' WSAIoctl to socket object and added an
4093 example for a simple network sniffer.
4095 - Bug #1301: Bad assert in _tkinter fixed.
4097 - Added bdist_wininst executable for VS 2008.
4099 - Bug #1604: collections.deque.__init__(iterable) now clears any prior
4100 contents before adding elements from the iterable. This fix brings
4101 the behavior into line with that for list.__init__().
4103 - Added wide char functions to msvcrt module: getwch, getwche, putwch
4104 and ungetwch. The functions accept or return unicode.
4106 - os.access now returns True on Windows for any existing directory.
4108 - Added warnpy3k function to the warnings module.
4110 - Marshal.dumps() now expects exact type matches for int, long, float,
4111 complex, tuple, list, dict, set, and frozenset. Formerly, it would
4112 silently miscode subclasses of those types. Now, it raises a
4115 - Patch #1388440: Add set_completion_display_matches_hook and
4116 get_completion_type to readline.
4118 - Bug #1649098: Avoid declaration of zero-sized array declaration in
4121 - Removed the rgbimg module; been deprecated since Python 2.5.
4123 - Bug #1721309: prevent bsddb module from freeing random memory.
4125 - Bug #1233: fix bsddb.dbshelve.DBShelf append method to work as
4126 intended for RECNO databases.
4128 - pybsddb.sf.net Bug #477182: Load the database flags at database open
4129 time so that opening a database previously created with the DB_DUP
4130 or DB_DUPSORT flag set will keep the proper behavior on subsequent
4131 opens. Specifically: dictionary assignment to a DB object will
4132 replace all values for a given key when the database allows
4133 duplicate values. DB users should use DB.put(k, v) when they want
4134 to store duplicates; not DB[k] = v.
4136 - Add the bsddb.db.DBEnv.lock_id_free method.
4138 - Bug #1686475: Support stat'ing open files on Windows again.
4140 - Patch #1185447: binascii.b2a_qp() now correctly quotes binary
4141 characters with ASCII value less than 32. Also, it correctly quotes
4142 dots only if they occur on a single line, as opposed to the previous
4143 behavior of quoting dots if they are the second character of any
4146 - Bug #1622896: fix a rare corner case where the bz2 module raised an
4147 error in spite of a succesful compression.
4149 - Patch #1654417: make operator.{get,set,del}slice use the full range
4152 - Patch #1646728: datetime.fromtimestamp fails with negative
4153 fractional times. With unittest.
4155 - Patch #1490190: posixmodule now includes os.chflags() and
4156 os.lchflags() functions on platforms where the underlying system
4157 calls are available.
4159 - Patch #1494140: Add documentation for the new struct.Struct object.
4161 - Patch #1432399: Support the HCI protocol for bluetooth sockets
4163 - Patch #1657276: Make NETLINK_DNRTMSG conditional.
4165 - Bug #1653736: Complain about keyword arguments to time.isoformat.
4167 - Bug #1486663: don't reject keyword arguments for subclasses of
4170 - Patch #1610575: The struct module now supports the 't' code, for C99
4173 - Patch #1635058: ensure that htonl and friends never accept or return
4174 negative numbers, per the underlying C implementation.
4176 - Patch #1544279: Improve thread-safety of the socket module by moving
4177 the sock_addr_t storage out of the socket object.
4179 - Patch #1019808: fix bug that causes an incorrect error to be
4180 returned when a socket timeout is set and a connection attempt
4183 - Speed up function calls into the math module.
4185 - Bug #1588217: don't parse "= " as a soft line break in binascii's
4186 a2b_qp() function, instead leave it in the string as quopri.decode()
4189 - Bug #1599782: Fix segfault on bsddb.db.DB().type().
4191 - Bug #1567666: Emulate GetFileAttributesExA for Win95.
4193 - Patch #1576166: Support os.utime for directories on Windows NT+.
4195 - Patch #1572724: fix typo ('=' instead of '==') in _msi.c.
4197 - Bug #1572832: fix a bug in ISO-2022 codecs which may cause segfault
4198 when encoding non-BMP unicode characters.
4200 - Bug #1556784: allow format strings longer than 127 characters in
4201 datetime's strftime function.
4203 - Fix itertools.count(n) to work with negative numbers again.
4205 - RLIMIT_SBSIZE was added to the resource module where available.
4207 - Bug #1551427: fix a wrong NULL pointer check in the win32 version of
4210 - Bug #1548092: fix curses.tparm seg fault on invalid input.
4212 - Patch #1114: fix curses module compilation on 64-bit AIX, & possibly
4213 other 64-bit LP64 platforms where attr_t is not the same size as a
4214 long. (Contributed by Luke Mewburn.)
4216 - Bug #1550714: fix SystemError from itertools.tee on negative value
4219 - Fixed a few bugs on cjkcodecs:
4220 - gbk and gb18030 codec now handle U+30FB KATAKANA MIDDLE DOT
4222 - iso2022_jp_2 codec now encodes into G0 for KS X 1001, GB2312
4223 codepoints to conform the standard.
4224 - iso2022_jp_3 and iso2022_jp_2004 codec can encode JIS X 0213:2
4227 - Bug #1552726: in readline.c, avoid repeatedly polling in interactive
4228 mode by only placing a timeout on the select() if an input hook has
4229 been defined. This prevents an interactive Python from waking up 10
4230 times per second. Patch by Richard Boulton.
4232 - fixed a bug with bsddb.DB.stat: the flags and txn keyword arguments
4235 - Added support for linking the bsddb module against BerkeleyDB 4.5.x,
4238 - Bug #1633621: if curses.resizeterm() or curses.resize_term() is
4239 called, update _curses.LINES, _curses.COLS, curses.LINES and
4242 - Fix an off-by-one bug in locale.strxfrm().
4244 - Fix libffi configure for hppa*-*-linux* | parisc*-*-linux*.
4246 - Build using system ffi library on arm*-linux*.
4248 - Bug #1372: zlibmodule.c: int overflow in PyZlib_decompress
4250 - bsddb module: Fix memory leak when using database cursors on
4251 databases without a DBEnv.
4253 - The sqlite3 module was updated to pysqlite 2.4.1.
4258 - Refactor test_logging to use unittest.
4260 - Refactor test_profile and test_cprofile to use the same code to
4263 - Make test_runpy reentrant by fixing _check_module to clear out any
4264 module being tested. Was causing an error by __import__ doing a
4265 reload on the second run and thus suppressing bytecode recreation.
4267 - Capture socket connection resets and timeouts in test_socket_ssl and
4268 test_urllib2net and raise test.test_support.ResourceDenied.
4270 - Patch #1559413: Fix test_cmd_line if sys.executable contains a
4273 - Added test.test_support.TransientResource which is a context manager
4274 to surround calls to resources that are not guaranteed to work even
4275 if test.test_support.requires says that the resource should exist.
4277 - Added a test for slicing of an exception.
4279 - Added test.test_support.EnvironmentVarGuard. It's a class that
4280 provides a context manager so that one can temporarily set or unset
4281 environment variables.
4283 - Added some tests for modulefinder.
4285 - Converted test_imp to use unittest.
4287 - Fix bsddb test_basics.test06_Transactions to check the version
4290 - test.test_support.catch_warning is a new context manager that can be
4291 used to catch the warnings issued by the warning framework.
4296 - Tools/scripts/reindent.py now creates the backup file using
4297 shutil.copy to preserve user/group and permissions. Added also a
4298 --nobackup option to not create the backup if the user is concerned
4299 regarding this. Check issue 1050828 for more details.
4301 - Tools/scripts/win_add2path.py was added. The simple script modifes
4302 the PATH environment var of the HKCU tree and adds the python bin
4303 and script directory.
4305 - Tools/18n/pygettext.py was added to the list of scripts installed by
4306 Tools/scripts/setup.py (tracker item 642309).
4308 - Added IronPython and Jython support to pybench (part of which was
4311 - Made some minor changes to pybench output to allow the user to see
4312 which Python version is running pybench.
4314 - Added support for the new platform module feature
4315 platform.python_implementation(); this will now be saved in the
4322 - RFE #1765140: Updated documentation on FileHandler and subclasses to
4323 include new optional delay argument.
4325 - Bug #932563: Added section on getting contextual information into
4326 logging output, and added documentation for the new LoggerAdapter
4329 - Bug #1295: Added information about caching of formatted exception
4330 information in the LogRecord by Formatter.format().
4332 - Bug #1637365: add subsection about "__name__ == __main__" to the
4335 - Patch #1698768: updated the "using Python on the Mac" intro.
4337 - Bug #1569057: Document that calling file.next() when the file is
4338 open for writing is undefined.
4340 - Patch #1489771: the syntax rules in Python Reference Manual were
4341 updated to reflect the current Python syntax.
4343 - Patch #1686451: Fix return type for
4344 PySequence_{Count,Index,Fast_GET_SIZE}.
4346 - Patch #1679379: add documentation for fnmatch.translate().
4348 - Bug #1629566: clarify the docs on the return values of parsedate()
4349 and parsedate_tz() in email.utils and rfc822.
4351 - Patch #1671450: add a section about subclassing builtin types to the
4352 "extending and embedding" tutorial.
4354 - Bug #1629125: fix wrong data type (int -> Py_ssize_t) in PyDict_Next
4357 - Bug #1565919: document set types in the Language Reference.
4359 - Bug #1546052: clarify that PyString_FromString(AndSize) copies the
4360 string pointed to by its parameter.
4362 - Bug #1566663: remove obsolete example from datetime docs.
4364 - Bug #1541682: Fix example in the "Refcount details" API docs.
4365 Additionally, remove a faulty example showing PySequence_SetItem
4366 applied to a newly created list object and add notes that this isn't
4373 - Patch #1552024: add decorator support to unparse.py demo script.
4375 - Make auto-generated python.vim file list built-ins and exceptions in
4376 alphatbetical order. Makes output more deterministic and easier to
4377 tell if the file is stale or not.
4379 - Bug #1546372: Fixed small bugglet in pybench that caused a missing
4380 file not to get reported properly.
4386 - Have the search path for building extensions follow the declared
4387 order in $CPPFLAGS and $LDFLAGS when adding directories from those
4388 environment variables.
4390 - Bug #1983: Added a check to pyport to verify that sizeof(pid_t) is
4391 smaller or equal sizeof(long).
4393 - Bug #1234: Fixed semaphore errors on AIX 5.2
4395 - Issue #1726: Remove Python/atof.c from PCBuild/pythoncore.vcproj.
4397 - Removed PCbuild8/ directory and added a new build directory for VS
4398 2005 based on the VS 2008 build directory to PC/VS8.0. The script
4399 PCbuild/vs8to9.py was added to sync changes from PCbuild to
4402 - Moved PCbuild/ directory for VS 2003 to PC/VS7.1 and renamed
4403 PCBuild9/ directory to PCBuild/.
4405 - Bug #1699: Define _BSD_SOURCE only on OpenBSD.
4407 - Bug #1608: use -fwrapv when GCC supports it. This is important,
4408 newer GCC versions may optimize away overflow buffer overflow checks
4409 without this option!
4411 - Patch #1418: Make the AC_REPLACE_FUNCS object files actually work.
4413 - Add a FAST_LOOPS build option that speeds-up looping by trading away
4414 periodic threadstate and signal checking in tight loops. By
4415 default, this option is turned-off. It should only be enabled in
4416 debugged, performance critical applications.
4418 - Patch #786737: Allow building in a tree of symlinks pointing to a
4421 - Bug #1737210: Change Manufacturer of Windows installer to PSF.
4423 - Bug #1746880: Correctly install DLLs into system32 folder on Win64.
4425 - Define _BSD_SOURCE, to get access to POSIX extensions on OpenBSD
4428 - Stop supporting AtheOS and cause a build error in configure for the
4431 - Bug #1655392: don't add -L/usr/lib/pythonX.Y/config to the LDFLAGS
4432 returned by python-config if Python was built with --enable-shared
4433 because that prevented the shared library from being used.
4435 - Patch #1569798: fix a bug in distutils when building Python from a
4436 directory within sys.exec_prefix.
4438 - Bug #1675511: Use -Kpic instead of -xcode=pic32 on Solaris/x86.
4440 - Disable _XOPEN_SOURCE on NetBSD 1.x.
4442 - configure now checks whether gcc supports the PyArg_ParseTuple
4445 - Bug #1578513: Cross compilation was broken by a change to configure.
4446 Repair so that it's back to how it was in 2.4.3.
4448 - Patch #1576954: Update VC6 build directory; remove redundant files
4451 - Bug #1568842: Fix test for uintptr_t.
4453 - Patch #1540470: for OpenBSD 4.0.
4455 - Fix build failure on kfreebsd and on the hurd.
4457 - Fix the build of the library reference in info format.
4459 - Allow Emacs 22 for building the documentation in info format.
4461 - Makefile.pre.in(buildbottest): Run an optional script
4462 pybuildbot.identify to include some information about the build
4469 - Unified naming convention for free lists and their limits. All free
4470 lists in Object/ are named ``free_list``, the counter ``numfree``
4471 and the upper limit is a macro ``PyName_MAXFREELIST`` inside an
4474 - ``PySet_Add()`` can now modify a newly created frozenset. Similarly
4475 to ``PyTuple_SetItem``, it can be used to populate a brand new
4476 frozenset; but it does not steal a reference to the added item.
4478 - Added ``PySet_Check()`` and ``PyFrozenSet_Check()`` to the set API.
4480 - Backport of PyUnicode_FromString(), _FromStringAndSize(), _Format
4481 and _FormatV from Python 3.0. Made PyLong_AsSsize_t and
4482 PyLong_FromSsize_t public functions.
4484 - Patch #1720595: add T_BOOL to the range of structmember types.
4486 - Issue #1534: Added ``PyFloat_GetMax()``, ``PyFloat_GetMin()`` and
4487 ``PyFloat_GetInfo()`` to the float API.
4489 - Issue #1521: On 64bit platforms, using PyArgs_ParseTuple with the t#
4490 of w# format code incorrectly truncated the length to an int, even
4491 when PY_SSIZE_T_CLEAN is set. The str.decode method used to return
4492 incorrect results with huge strings.
4494 - Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
4495 Py_TYPE and Py_REFCNT.
4497 - PEP 3123: Provide forward compatibility with Python 3.0, while
4498 keeping backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size,
4499 and PyVarObject_HEAD_INIT.
4501 - Py_ssize_t fields work in structmember when HAVE_LONG_LONG is not
4504 - Patch #1733960: Allow T_LONGLONG to accept ints.
4506 - T_PYSSIZET can now be used in PyMemberDef lists for Py_ssize_t members.
4508 - Added a new API function ``PyImport_ImportModuleNoBlock``.
4510 - Bug #1637022: Prefix AST symbols with _Py_.
4512 - Fix some leftovers from the conversion from int to Py_ssize_t
4513 (relevant to strings and sequences of more than 2**31 items).
4515 - Make _PyGILState_NoteThreadState() static, it was not used anywhere
4516 outside of pystate.c and should not be necessary.
4518 - ``PyImport_Import`` and ``PyImport_ImportModule`` now always do
4519 absolute imports. In earlier versions they might have used relative
4520 imports under some conditions.
4522 - Added case insensitive comparison methods ``PyOS_stricmp(char*,
4523 char*)`` and ``PyOS_strnicmp(char*, char*, Py_ssize_t)``.
4525 - Bug #1542693: remove semi-colon at end of PyImport_ImportModuleEx
4526 macro so it can be used as an expression.
4532 - Patch #1706: Drop support for Win9x, WinME and NT4. Python now
4533 requires Windows 2000 or greater. The _WINVER and NTDDI_VERSION
4534 macros are set to Win2k for x86/32bit builds and WinXP for AMD64
4537 - Conditionalize definition of _CRT_SECURE_NO_DEPRECATE and
4538 _CRT_NONSTDC_NO_DEPRECATE.
4540 - Bug #1216: Restore support for Visual Studio 2002.
4546 - cfmfile now raises a DeprecationWarning.
4548 - buildtools now raises a DeprecationWarning.
4550 - Removed the macfs module. It had been deprecated since Python 2.5.
4551 This lead to the deprecation of macostools.touched() as it relied
4552 solely on macfs and was a no-op under OS X.
4556 **(For information about older versions, consult the HISTORY file.)**