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 - Remove length limitation when constructing a complex number from a
18 - Issue #1087418: Boost performance of bitwise operations for longs.
20 - Issue #1722344: threading._shutdown() is now called in Py_Finalize(), which
21 fixes the problem of some exceptions being thrown at shutdown when the
22 interpreter is killed. Patch by Adam Olsen.
24 - Issue #7168: Document PyFloat_AsString and PyFloat_AsReprString, and
25 note that they are unsafe and deprecated.
27 - Issue #7120: logging: Removed import of multiprocessing which is causing
30 - Issue #7140: The __dict__ of a module should not be cleared unless the module
31 is the only object holding a reference to it.
33 - Issue #1754094: Improve the stack depth calculation in the compiler.
34 There should be no other effect than a small decrease in memory use.
35 Patch by Christopher Tur Lesniewski-Laas.
37 - Issue #7084: Fix a (very unlikely) crash when printing a list from one
38 thread, and mutating it from another one. Patch by Scott Dial.
40 - Issue #1571184: The Unicode database contains properties for more characters.
41 The tables for code points representing numeric values, white spaces or line
42 breaks are now generated from the official Unicode Character Database files,
43 and include information from the Unihan.txt file.
45 - Issue #7050: Fix a SystemError when trying to use unpacking and augmented
48 - Issue #5329: Fix os.popen* regression from 2.5 with commands as a
49 sequence running through the shell. Patch by Jean-Paul Calderone
52 - Issue #7019: Raise ValueError when unmarshalling bad long data, instead
53 of producing internally inconsistent Python longs.
55 - Issue #6990: Fix threading.local subclasses leaving old state around
56 after a reference cycle GC which could be recycled by new locals.
58 - Issue #6300: unicode.encode, unicode.decode, str.decode, and str.encode now
59 take keyword arguments.
61 - Issue #6922: Fix an infinite loop when trying to decode an invalid
62 UTF-32 stream with a non-raising error handler like "replace" or "ignore".
64 - Issue #6713: Improve performance of base 10 int -> string and
65 long -> string conversions.
67 - Issue #1590864: Fix potential deadlock when mixing threads and fork().
69 - Issue #6844: Do not emit DeprecationWarnings when accessing a "message"
70 attribute on exceptions that was set explicitly.
72 - Issue #6846: Fix bug where bytearray.pop() returns negative integers.
74 - classmethod no longer checks if its argument is callable.
76 - Issue #6750: A text file opened with io.open() could duplicate its output
77 when writing from multiple threads at the same time.
79 - Issue #6704: Improve the col_offset in AST for "for" statements with
80 a target of tuple unpacking.
82 - Issue #6707: dir() on an uninitialized module caused a crash.
84 - Issue #6540: Fixed crash for bytearray.translate() with invalid parameters.
86 - Issue #6573: set.union() stopped processing inputs if an instance of self
87 occurred in the argument chain.
89 - Issue #1616979: Added the cp720 (Arabic DOS) encoding.
91 - Issue #6070: On posix platforms import no longer copies the execute bit
92 from the .py file to the .pyc file if it is set. Patch by Marco N.
94 - Issue #4618: When unicode arguments are passed to print(), the default
95 separator and end should be unicode also.
97 - Issue #6119: Fixed a incorrect Py3k warning about order comparisons of builtin
98 functions and methods.
100 - Issue #6347: Include inttypes.h as well as stdint.h in pyport.h.
101 This fixes a build failure on HP-UX: int32_t and uint32_t are
102 defined in inttypes.h instead of stdint.h on that platform.
104 - Issue #4856: Remove checks for win NT.
106 - Issue #2016: Fixed a crash in a corner case where the dictionary of keyword
107 arguments could be modified during the function call setup.
109 - Removed the ipaddr module.
111 - Issue #6329: Fixed iteration for memoryview objects (it was being blocked
112 because it wasn't recognized as a sequence).
114 - Issue #6289: Encoding errors from compile() were being masked.
116 - When no module is given in a relative import, the module field of the
117 ImportFrom AST node is now None instead of an empty string.
119 - Assignment to None using import statements now raises a SyntaxError.
121 - Issue #4547: When debugging a very large function, it was not always
122 possible to update the lineno attribute of the current frame.
124 - Issue #5330: C functions called with keyword arguments were not reported by
125 the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.
127 - Issue #5982: staticmethod and classmethod now expose the wrapped
128 function with __func__.
130 - Added support for multiple context managers in the same with-statement.
131 Deprecated contextlib.nested() which is no longer needed.
133 - Issue #6101: A new opcode, SETUP_WITH, has been added to speed up the with
134 statement and correctly lookup the __enter__ and __exit__ special methods.
136 - Issue #5829: complex("1e500") no longer raises OverflowError. This
137 makes it consistent with float("1e500") and interpretation of real
138 and imaginary literals.
140 - Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
142 - __instancecheck__ and __subclasscheck__ are now completely ignored on classic
143 classes and instances.
145 - Issue #5994: the marshal module now has docstrings.
147 - Issue #5981: Fix three minor inf/nan issues in float.fromhex:
148 (1) inf and nan strings with trailing whitespace were incorrectly
149 rejected; (2) parsing of strings representing infinities and nans
150 was locale aware; and (3) the interpretation of fromhex('-nan')
151 didn't match that of float('-nan').
153 - Issue #5920: For float.__format__, change the behavior with the
154 empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
155 to be like 'g' but with at least one decimal point and with a
156 default precision of 12. Previously, the behavior the same but with
157 a default precision of 6. This more closely matches str(), and
158 reduces surprises when adding alignment flags to the empty
159 presentation type. This also affects the new complex.__format__ in
162 - Issue #5890: in subclasses of 'property' the __doc__ attribute was
163 shadowed by classtype's, even if it was None. property now
164 inserts the __doc__ into the subclass instance __dict__.
166 - Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
167 sequences. Patch by Nick Barnes and Victor Stinner.
169 - Issue #1588: Add complex.__format__. For example,
170 format(complex(1, 2./3), '.5') now produces a sensible result.
172 - Issue #5864: Fix empty format code formatting for floats so that it
173 never gives more than the requested number of significant digits.
175 - Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
176 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
178 - Issue #4971: Fix titlecase for characters that are their own
179 titlecase, but not their own uppercase.
181 - Issue #5835: Deprecate PyOS_ascii_formatd and replace it with
182 _PyOS_double_to_string or PyOS_double_to_string.
184 - Issue #5283: Setting __class__ in __del__ caused a segfault.
186 - Issue #5816: complex(repr(z)) now recovers z exactly, even when
187 z involves nans, infs or negative zeros.
189 - Implement PEP 378, Format Specifier for Thousands Separator, for
190 floats, ints, and longs.
192 - Issue #5515: 'n' formatting for ints, longs, and floats handles
193 leading zero formatting poorly.
195 - Issue #5772: For float.__format__, don't add a trailing ".0" if
196 we're using no type code and we have an exponent.
198 - Issue #3166: Make long -> float (and int -> float) conversions
201 - Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
204 - Issue #1869: fix a couple of minor round() issues. round(5e15+1)
205 was giving 5e15+2; round(-0.0) was losing the sign of the zero.
207 - Issue #5759: float() didn't call __float__ on str subclasses.
209 - Issue #5704: the "-3" command-line option now implies "-t".
211 - Issue #2170: refactored xml.dom.minidom.normalize, increasing both
212 its clarity and its speed.
214 - Issue #2396: the memoryview object was backported from Python 3.1.
216 - Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
217 when hitting the recursion limit under certain circumstances.
219 - Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
221 - Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
222 the end sys.path, for compatibility with the system install of Python.
224 - Issue #4688: Add a heuristic so that tuples and dicts containing only
225 untrackable objects are not tracked by the garbage collector. This can
226 reduce the size of collections and therefore the garbage collection overhead
227 on long-running programs, depending on their particular use of datatypes.
229 - Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
230 improve its performance. Long divisions and remainder operations
231 are now between 50% and 150% faster.
233 - Issue #4258: Make it possible to use base 2**30 instead of base
234 2**15 for the internal representation of integers, for performance
235 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
236 --enable-big-digits option to configure, which overrides the
237 default. Add sys.long_info structseq to provide information about
240 - Issue #4034: Fix weird attribute error messages of the traceback object. (As a
241 result traceback.__members__ no longer exists.)
243 - Issue #4474: PyUnicode_FromWideChar now converts characters outside
244 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
245 and sizeof(Py_UNICODE) == 2.
247 - Issue #5237: Allow auto-numbered fields in str.format(). For
248 example: '{} {}'.format(1, 2) == '1 2'.
250 - Issue #3652: Make the 'line' argument for warnings.showwarning() a
251 requirement. Means the DeprecationWarning from Python 2.6 can go away.
253 - Issue #5247: Improve error message when unknown format codes are
254 used when using str.format() with str, unicode, long, int, and
257 - Running Python with the -3 option now also warns about classic division
260 - Issue #5260: Long integers now consume less memory: average
261 saving is 2 bytes per long on a 32-bit system and 6 bytes per long
264 - Issue #5186: Reduce hash collisions for objects with no __hash__ method by
265 rotating the object pointer by 4 bits to the right.
267 - Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
268 it now forces its argument to double before testing for infinity.
270 - Issue #4978: Passing keyword arguments as unicode strings is now allowed.
272 - Issue #1242657: the __len__() and __length_hint__() calls in several tools
273 were suppressing all exceptions. These include list(), filter(), map(),
274 zip(), and bytearray().
276 - os.ftruncate raises OSErrors instead of IOErrors for consistency with other os
279 - Issue #4991: Passing invalid file descriptors to io.FileIO now raises an
282 - Issue #4807: Port the _winreg module to Windows CE.
284 - Issue #4935: The overflow checking code in the expandtabs() method common
285 to str, bytes and bytearray could be optimized away by the compiler, letting
286 the interpreter segfault instead of raising an error.
288 - Issue #3720: Fix a crash when an iterator modifies its class and removes its
291 - Issue #4893: Use NT threading on CE.
293 - Issue #4915: Port sysmodule to Windows CE.
295 - Issue #4074: Change the criteria for doing a full garbage collection (i.e.
296 collecting the oldest generation) so that allocating lots of objects without
297 destroying them does not show quadratic performance. Based on a proposal by
299 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
301 - Issue #4850: Change COUNT_ALLOCS variables to Py_ssize_t.
303 - Issue #1180193: When importing a module from a .pyc (or .pyo) file with
304 an existing .py counterpart, override the co_filename attributes of all
305 code objects if the original filename is obsolete (which can happen if the
306 file has been renamed, moved, or if it is accessed through different paths).
307 Patch by Ziga Seilnacht and Jean-Paul Calderone.
309 - Issue #4075: Use OutputDebugStringW in Py_FatalError.
311 - Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
312 file with `str' filename on Windows.
314 - Issue #3680: Reference cycles created through a dict, set or deque iterator
315 did not get collected.
317 - Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
318 where the tp_hash and tp_dict slots are both NULL.
320 - Issue #4764: With io.open, IOError.filename is set when trying to open a
321 directory on POSIX systems.
323 - Issue #4764: IOError.filename is set when trying to open a directory on POSIX
326 - Issue #4759: None is now allowed as the first argument of
327 bytearray.translate(). It was always allowed for bytes.translate().
329 - Added test case to ensure attempts to read from a file opened for writing
332 - Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
333 print elapsed times, not only when some objects are uncollectable /
334 unreachable. Original patch by Neil Schemenauer.
336 - Issue #3439: Add a bit_length method to int and long.
338 - Issue #2183: Simplify and optimize bytecode for list comprehensions.
339 Original patch by Neal Norwitz.
341 - Issue #4597: Fixed exception handling when the __exit__ function of a
342 context manager returns a value that cannot be converted to a bool.
344 - Issue #4597: Fixed several opcodes that weren't always propagating
347 - Issue #4445: Replace "sizeof(PyStringObject)" with
348 "offsetof(PyStringObject, ob_sval) + 1" when allocating memory for
349 str instances. On a typical machine this saves 3 bytes of memory
350 (on average) per string allocation.
352 - Issue #3996: On Windows, the PyOS_CheckStack function would cause the
353 interpreter to abort ("Fatal Python error: Could not reset the stack!")
354 instead of throwing a MemoryError.
356 - Issue #3689: The list reversed iterator now supports __length_hint__
357 instead of __len__. Behavior now matches other reversed iterators.
359 - Issue #4367: Python would segfault during compiling when the unicodedata
360 module couldn't be imported and \N escapes were present.
362 - Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
363 method on file objects with closefd=False. The file descriptor is still
364 kept open but the file object behaves like a closed file. The ``FileIO``
365 object also got a new readonly attribute ``closefd``.
367 - Issue #4348: Some bytearray methods returned that didn't cause any change to
368 the bytearray, returned the same bytearray instead of a copy.
370 - Issue #4317: Fixed a crash in the imageop.rgb2rgb8() function.
372 - Issue #4230: If ``__getattr__`` is a descriptor, it now functions correctly.
374 - Issue #4048: The parser module now correctly validates relative imports.
376 - Issue #4225: ``from __future__ import unicode_literals`` didn't work in an
379 - Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
380 method does not return iterators for the 4th and 5th items.
382 - Issue #4209: Enabling unicode_literals and the print_function in the same
383 __future__ import didn't work.
385 - Using ``nonlocal`` as a variable name will now raise a Py3k SyntaxWarning
386 because it is a reserved word in 3.x.
388 - On windows, os.chdir given unicode was not working if GetCurrentDirectoryW
389 returned a path longer than MAX_PATH. (But It's doubtful this code path is
390 really executed because I cannot move to such directory on win2k)
392 - Issue #4069: When set.remove(element) is used with a set element, the element
393 is temporarily replaced with an equivalent frozenset. But the eventual
394 KeyError would always report the empty frozenset([]) as the missing key. Now
395 it correctly refers to the initial element.
397 - Issue #4509: Various issues surrounding resize of bytearray objects to
398 which there are buffer exports.
400 - Issue #4748: Lambda generators no longer return a value.
402 - Issue #3582: Use native TLS functions on Windows
404 - The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
406 - Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
409 - Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
410 to avoid compiler warnings.
412 - Issue #5705: os.setuid() would not accept values > 2**31-1 but pwd.getpwnam()
413 returned them on 64bit platforms.
415 - Issue #5108: Handle %s like %S and %R in PyUnicode_FromFormatV(): Call
416 PyUnicode_DecodeUTF8() once, remember the result and output it in a second
417 step. This avoids problems with counting UTF-8 bytes that ignores the effect
418 of using the replace error handler in PyUnicode_DecodeUTF8().
420 - Issue #3739: The unicode-internal encoder now reports the number of characters
421 consumed like any other encoder (instead of the number of bytes).
426 - Issue #7233: Fix a number of two-argument Decimal methods to make
427 sure that they accept an int or long as the second argument. Also
428 fix buggy handling of large arguments (those with coefficient longer
429 than the current precision) in shift and rotate.
431 - Issue #4750: Store the basename of the original filename in the gzip FNAME
432 header as required by RFC 1952.
434 - Issue #1180: Added a new global option to ignore ~/.pydistutils.cfg in
437 - Issue #7218: Fix test_site for win32, the directory comparison was done with
440 - Issue #7205: Fix a possible deadlock when using a BZ2File object from
441 several threads at once.
443 - Issue #7071: byte-compilation in Distutils is now done with respect to
444 sys.dont_write_bytecode.
446 - Issue #7066: archive_util.make_archive now restores the cwd if an error is
447 raised. Initial patch by Ezio Melotti.
449 - Issue #6218: io.StringIO and io.BytesIO instances are now picklable with
452 - Issue #7077: logging: SysLogHandler now treats Unicode as per RFC 5424.
454 - Issue #7099: Decimal.is_normal now returns True for numbers with exponent
457 - Issue #5833: Fix extra space character in readline completion with the
458 GNU readline library version 6.0.
460 - Issue #7133: SSL objects now support the new buffer API.
462 - Issue #7149: urllib fails on OSX in the proxy detection code
464 - Issue #7069: Make inspect.isabstract() return a boolean.
466 - Add support to the `ihooks` module for relative imports.
468 - Issue #6894: Fixed the issue urllib2 doesn't respect "no_proxy" environment
470 - Issue #7086: Added TCP support to SysLogHandler, and tidied up some
471 anachronisms in the code which were a relic of 1.5.2 compatibility.
473 - Issue #7082: When falling back to the MIME 'name' parameter, the
474 correct place to look for it is the Content-Type header.
476 - Issue #7048: Force Decimal.logb to round its result when that result
477 is too large to fit in the current precision.
479 - Issue #6516: Added owner/group support when creating tar archives in
482 - Issue #7031: Add TestCase.assert(Not)IsInstance() methods.
484 - Issue #6790: Make it possible again to pass an `array.array` to
485 `httplib.HTTPConnection.send`. Patch by Kirk McDonald.
487 - Issue #6236, #6348: Fix various failures in the `io` module under AIX
488 and other platforms, when using a non-gcc compiler. Patch by egreen.
490 - Issue #6954: Fixed crash when using DISTUTILS_DEBUG flag in Distutils.
492 - Issue #6851: Fix urllib.urlopen crash on secondairy threads on OSX 10.6
494 - Issue #4606: Passing 'None' if ctypes argtype is set to POINTER(...)
495 does now always result in NULL.
497 - Issue #5042: ctypes Structure sub-subclass does now initialize
498 correctly with base class positional arguments.
500 - Issue #6938: Fix a TypeError in string formatting of a multiprocessing
503 - Issue #6635: Fix profiler printing usage message.
505 - Issue #6856: Add a filter keyword argument to TarFile.add().
507 - Issue #6163: Fixed HP-UX runtime library dir options in
508 distutils.unixcompiler. Initial patch by Sridhar Ratnakumar and
509 Michael Haubenwallner.
511 - Issue #6857: Default format() alignment should be '>' for Decimal
514 - Issue #6795: int(Decimal('nan')) now raises ValueError instead of
515 returning NaN or raising InvalidContext. Also, fix infinite recursion
516 in long(Decimal('nan')).
518 - Issue #6850: Fix bug in Decimal._parse_format_specifier for formats
519 with no type specifier.
521 - Issue #4937: plat-mac/bundlebuilder revers to non-existing version.plist
523 - Issue #6838: Use a list to accumulate the value instead of
524 repeatedly concatenating strings in httplib's
525 HTTPResponse._read_chunked providing a significant speed increase
526 when downloading large files servend with a Transfer-Encoding of 'chunked'.
528 - Issue #5275: In Cookie's Cookie.load(), properly handle non-string arguments
531 - Issue #2666: Handle BROWSER environment variable properly for unknown browser
532 names in the webbrowser module.
534 - Issue #6054: Do not normalize stored pathnames in tarfile.
536 - Issue #6794: Fix Decimal.compare_total and Decimal.compare_total_mag: NaN
537 payloads are now ordered by integer value rather than lexicographically.
539 - Issue #6693: New functions in site.py to get user/global site packages paths.
541 - The thread.lock type now supports weak references.
543 - Issue #1356969: Add missing info methods in Tix.HList.
545 - Issue #1522587: New constants and methods for the Tix.Grid widget.
547 - Issue #1250469: Fix the return value of Tix.PanedWindow.panes.
549 - Issue #1119673: Do not override Tkinter.Text methods when creating a
552 - Issue #6665: Fix fnmatch to properly match filenames with newlines in them.
554 - Issue #1135: Add the XView and YView mix-ins to avoid duplicating
555 the xview* and yview* methods.
557 - Issue #6629: Fix a data corruption issue in the new `io` package, which could
558 occur when writing to a BufferedRandom object (e.g. a file opened in "rb+" or
559 "wb+" mode) after having buffered a certain amount of data for reading. This
560 bug was not present in the pure Python implementation.
562 - Issue #4660: If a multiprocessing.JoinableQueue.put() was preempted, it was
563 possible to get a spurious 'task_done() called too many times' error.
565 - Issue #1628205: Socket file objects returned by socket.socket.makefile() now
566 properly handles EINTR within the read, readline, write & flush methods.
567 The socket.sendall() method now properly handles interrupted system calls.
569 - Issue #6595: The Decimal constructor now allows arbitrary Unicode
570 decimal digits in input, as recommended by the standard. Previously
571 it was restricted to accepting [0-9].
573 - Issue #6511: ZipFile now raises BadZipfile (instead of an IOError) when
574 opening an empty or very small file.
576 - Issue #6553: Fixed a crash in cPickle.load(), when given a file-like object
577 containing incomplete data.
579 - Issue #6545: Removed assert statements in distutils.Extension, so the
580 behavior is similar when used with -O.
582 - unittest has been split up into a package. All old names should still work.
584 - Issue #6431: Make Fraction type return NotImplemented when it doesn't
585 know how to handle a comparison without loss of precision. Also add
586 correct handling of infinities and nans for comparisons with float.
588 - Issue #6415: Fixed warnings.warn segfault on bad formatted string.
590 - Issue #6466: now distutils.cygwinccompiler and distutils.emxccompiler
591 uses the same refactored function to get gcc/ld/dllwrap versions numbers.
592 It's `distutils.util.get_compiler_versions`. Added deprecation warnings
593 for the obsolete get_versions() functions.
595 - Issue #6433: fixed issues with multiprocessing.pool.map hanging on empty list
597 - Issue #6314: logging: Extra checks on the "level" argument in more places.
599 - Issue #2622: Fixed an ImportError when importing email.messsage from a
600 standalone application built with py2exe or py2app.
602 - Issue #6455: Fixed test_build_ext under win32.
604 - Issue #6377: Enabled the compiler option, and deprecate its usage as an
607 - Issue #6413: Fixed the log level in distutils.dist for announce.
609 - Issue #3392: The subprocess communicate() method no longer fails in select()
610 when file descriptors are large; communicate() now uses poll() when possible.
612 - Issue #6403: Fixed package path usage in build_ext.
614 - Issues #5155, 5313, 5331: multiprocessing.Process._bootstrap was
615 unconditionally calling "os.close(sys.stdin.fileno())" resulting in file
618 - Issue #6365: Distutils build_ext inplace mode was copying the compiled
619 extension in a subdirectory if the extension name had dots.
621 - Issue #6344: Fixed a crash of mmap.read() when passed a negative argument.
623 - Issue #5230: pydoc would report no documentation found if a module generated
624 a 'not found' import error when loaded; it now reports the import errors.
625 Thanks to Lucas Prado Melo for initial fix and collaboration on the tests.
627 - Issue #6314: logging.basicConfig() performs extra checks on the "level"
630 - Issue #6164: Added an AIX specific linker argument in Distutils
631 unixcompiler. Original patch by Sridhar Ratnakumar.
633 - Issue #6274: Fixed possible file descriptors leak in subprocess.py
635 - Issue #6189: Restored compatibility of subprocess.py with Python 2.2.
637 - Issue #6287: Added the license field in Distutils documentation.
639 - Issue #6286: Now Distutils upload command is based on urllib2 instead of
640 httplib, allowing the usage of http_proxy.
642 - Issue #6271: mmap tried to close invalid file handle (-1) when annonymous.
645 - Issue #6215: All bug fixes and enhancements from the Python 3.1 io library
646 (including the fast C implementation) have been backported to the standard
649 - Issue #6258: Support AMD64 in bdist_msi.
651 - Issue #5262: Fixed bug in next rollover time computation in
652 TimedRotatingFileHandler.
654 - Issue #6263: Fixed syntax error in distutils.cygwincompiler.
656 - Issue #5201: distutils.sysconfig.parse_makefile() now understands `$$`
657 in Makefiles. This prevents compile errors when using syntax like:
658 `LDFLAGS='-rpath=\$$LIB:/some/other/path'`. Patch by Floris Bruynooghe.
660 - Issue #5767: Removed sgmlop support from xmlrpclib.
662 - Issue #6131: test_modulefinder leaked when run after test_distutils.
663 Patch by Hirokazu Yamamoto.
665 - Issue #6048: Now Distutils uses the tarfile module in archive_util.
667 - Issue #5150: IDLE's format menu now has an option to strip trailing
670 - Issue #6121: pydoc now ignores leading and trailing spaces in the
671 argument to the 'help' function.
673 - In unittest, using a skipping decorator on a class is now equivalent to
674 skipping every test on the class. The ClassTestSuite class has been removed.
676 - Issue #6050: Don't fail extracting a directory from a zipfile if
677 the directory already exists.
679 - Issue #5311: bdist_msi can now build packages that do not depend on a
680 specific Python version.
682 - Issue #1309352: fcntl now converts its third arguments to a C `long` rather
683 than an int, which makes some operations possible under 64-bit Linux (e.g.
684 DN_MULTISHOT with F_NOTIFY).
686 - Issue #1424152: Fix for httplib, urllib2 to support SSL while working through
687 proxy. Original patch by Christopher Li, changes made by Senthil Kumaran.
689 - Issue #1983: Fix functions taking or returning a process identifier to use
690 the dedicated C type ``pid_t`` instead of a C ``int``. Some platforms have
691 a process identifier type wider than the standard C integer type.
693 - Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket.
694 Patch by Farhan Ahmad, test by Marcin Bachry.
696 - Issue #6062: In distutils, fixed the package option of build_ext. Feedback
697 and tests on pywin32 by Tim Golden.
699 - Issue #6053: Fixed distutils tests on win32. patch by Hirokazu Yamamoto.
701 - Issue #6046: Fixed the library extension when distutils build_ext is used
702 inplace. Initial patch by Roumen Petrov.
704 - Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
707 - Issue #2116: Weak references and weak dictionaries now support copy()ing and
710 - Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
712 - Issue #5918: Fix a crash in the parser module.
714 - Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
716 - Issue #6022: a test file was created in the current working directory by
717 test_get_outputs in Distutils.
719 - Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
720 file is a binary. Patch by Brodie Rao, tests by Daniel Diniz.
722 - Issue #5977: distutils build_ext.get_outputs was not taking into account the
723 inplace option. Initial patch by kxroberto.
725 - Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
726 for old-style extensions.
728 - Issue #5971: StreamHandler.handleError now swallows IOErrors which occur when
729 trying to print a traceback.
731 - Issue #5976: Fixed Distutils test_check_environ.
733 - Issue #5900: Ensure RUNPATH is added to extension modules with RPATH if GNU
734 ld is used. Original patch by Floris Bruynooghe.
736 - Issue #5941: Distutils build_clib command was not working anymore because
737 of an incomplete costumization of the archiver command. Added ARFLAGS in the
738 Makefile besides AR and make Distutils use it. Original patch by David
741 - Issue 5955: aifc's close method did not close the file it wrapped,
742 now it does. This also means getfp method now returns the real fp.
744 - Issue #4875: On win32, ctypes.util.find_library does no longer
747 - Issue #5142: Add the ability to skip modules while stepping to pdb.
749 - Issue #1309567: Fix linecache behavior of stripping subdirectories when
750 looking for files given by a relative filename.
752 - Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
753 extracting a file to the root directory.
755 - Issue #5913: os.listdir() should fail for empty path on windows.
757 - Issue #5084: unpickling now interns the attribute names of pickled objects,
758 saving memory and avoiding growth in size of subsequent pickles. Proposal
759 and original patch by Jake McGuire.
761 - Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
762 error when a named pipe is encountered, rather than blocking infinitely.
764 - Issue #3959: The ipaddr module has been added to the standard library.
765 Contributed by Google.
767 - Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
769 - Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
772 - Issue #4305: ctypes should now build again on mipsel-linux-gnu
774 - Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
775 string is already in normalized form, by performing a quick check beforehand.
776 Original patch by Rauli Ruohonen.
778 - Issue #5853: calling a function of the mimetypes module from several threads
779 at once could hit the recursion limit if the mimetypes database hadn't been
782 - Issue #5854: Updated __all__ to include some missing names and remove some
783 names which should not be exported.
785 - Issue #5810: Fixed Distutils test_build_scripts so it uses
786 sysconfig.get_config_vars.
788 - Issue #4951: Fixed failure in test_httpservers.
790 - Issue #3102: All global symbols that the _ctypes extension defines
791 are now prefixed with 'Py' or '_ctypes'.
793 - Issue #5041: ctypes does now allow pickling wide character.
795 - Issue #5812: For the two-argument form of the Fraction constructor,
796 Fraction(m, n), m and n are permitted to be arbitrary Rational
799 - Issue #5812: Fraction('1e6') is valid: more generally, any string
800 that's valid for float() is now valid for Fraction(), with the
801 exception of strings representing NaNs and infinities.
803 - Issue #5795: Fixed test_distutils failure on Debian ppc.
805 - Issue #5768: Fixed bug in Unicode output logic and test case for same.
807 - Issue #1161031: fix readwrite select flag handling: POLLPRI now
808 results in a handle_expt_event call, not handle_read_event, and POLLERR
809 and POLLNVAL now call handle_close, not handle_expt_event. Also,
810 dispatcher now has an 'ignore_log_types' attribute for suppressing
811 log messages, which is set to 'warning' by default.
813 - Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
815 - Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
816 a value in SafeConfigParser.
818 - Issue #5732: added a new command in Distutils: check.
820 - Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
821 platforms. Initial patch by Paul Moore.
823 - Issue #2254: Fix CGIHTTPServer information disclosure. Relative paths are
824 now collapsed within the url properly before looking in cgi_directories.
826 - Issue #5095: Added bdist_msi to the list of bdist supported formats.
827 Initial fix by Steven Bethard.
829 - Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
830 Initial fix by Wayne Davison.
832 - Issue #5693: TestSuite.__iter__ can now be consistently overridden in subclasses.
834 - Issue #5694: removed spurious test output in Distutils (test_clean).
836 - Issue #5471: Fix os.path.expanduser() for $HOME set to '/'.
838 - Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
840 - Issue #1726172: fix IndexError in the case of and empty response in ftplib.
842 - Issue #2625: added missing iteritems() call to the for loop in
843 mailbox.MH.get_message().
845 - Issue #5585: Add the ability to call an initializer to mulitiprocessing.manager
846 so that users can install custom handlers/etc.
848 - Issue #3551: Patch multiprocessing to raise a proper exception if the size of the
849 object when writefile is called causes a ERROR_NO_SYSTEM_RESOURCES. Added docs
850 to note the limitation
852 - unittest.assertNotEqual() now uses the inequality operator (!=) instead
853 of the equality operator.
855 - Issue #6001: Test discovery for unittest. Implemented in
856 unittest.TestLoader.discover and from the command line.
858 - Issue #5679: The methods unittest.TestCase.addCleanup and doCleanups were added.
859 addCleanup allows you to add cleanup functions that will be called
860 unconditionally (after setUp if setUp fails, otherwise after tearDown). This
861 allows for much simpler resource allocation and deallocation during tests.
863 - Issue #3379: unittest.main now takes an optional exit argument. If False main
864 doesn't call sys.exit allowing it to be used from the interactive interpreter.
866 - Issue #5995: unittest.main now takes an optional verbosity argument allowing
867 test modules to be run with a higher than default verbosity.
869 - Issue #5995: A fix to allow you to run "python -m unittest test_module" or
870 "python -m unittest test_module.TestClass" from the command line.
872 - Issue #5728: unittest.TestResult has new startTestRun and stopTestRun methods;
873 called immediately before and after a test run.
875 - Issue #5663: better failure messages for unittest asserts. Default assertTrue
876 and assertFalse messages are now useful. TestCase has a longMessage attribute.
877 This defaults to False, but if set to True useful error messages are shown in
878 addition to explicit messages passed to assert methods.
880 - Issue #3110: Add additional protect around SEM_VALUE_MAX for multiprocessing
882 - In Pdb, prevent the reassignment of __builtin__._ by sys.displayhook on
885 - Issue #4572: added SEEK_* symbolic constants to io module.
887 - Issue #1665206 (partially): Move imports in cgitb to the top of the module
888 instead of performing them in functions. Helps prevent import deadlocking in
891 - Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
893 - Actually make the SimpleXMLRPCServer CGI handler work.
895 - Issue #2522: locale.format now checks its first argument to ensure it has
896 been passed only one pattern, avoiding mysterious errors where it appeared
897 that it was failing to do localization.
899 - Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
902 - Issue #5619: Multiprocessing children disobey the debug flag and causes
903 popups on windows buildbots. Patch applied to work around this issue.
905 - Issue #5632: Thread.ident was None for the main thread and threads not created
906 with the threading module.
908 - Issue #5400: Added patch for multiprocessing on netbsd compilation/support
910 - Issue #5387: Fixed mmap.move crash by integer overflow.
912 - Issue #5261: Patch multiprocessing's semaphore.c to support context
913 manager use: "with multiprocessing.Lock()" works now.
915 - Issue #5177: Multiprocessing's SocketListener class now uses
916 socket.SO_REUSEADDR on all connections so that the user no longer needs
917 to wait 120 seconds for the socket to expire.
919 - Adjusted _tkinter to compile without warnings when WITH_THREAD is not
920 defined (part of issue #5035).
922 - Issue #5561: Removed the sys.version_info shortcuts from platform's
923 python_version() and python_version_tuple() since they produced different
924 output compared to previous Python versions.
926 - Issue #1034053: unittest now supports skipping tests and expected failures.
928 - The unittest.TestCase.assertRaises() method now returns a context manager when
929 not given a callable so that code to be tested can be written inline using
932 - The unittest.TestCase.assertEqual() now displays the differences in lists,
933 tuples, dicts and sets on failure. Many new handy type and comparison
934 specific assert* methods have been added that fail with error messages
935 actually useful for debugging. Contributed in part by Google. [Issue #2578]
937 - Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
938 forever on incomplete input. That caused tarfile.open() to hang when used
939 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
940 partial bzip2 compressed data.
942 - Issue #5536: urllib.urlretrieve makes sure to close the file it's writing to
943 even if an exception occurs.
945 - Issue #5381: Added object_pairs_hook to the json module. This allows
946 OrderedDicts to be built by the decoder.
948 - Issue #2110: Add support for thousands separator and 'n' type
949 specifier to Decimal.__format__
951 - Fix Decimal.__format__ bug that swapped the meanings of the '<' and
952 '>' alignment characters.
954 - Issue #1222: locale.format() bug when the thousands separator is a space
957 - Issue #5472: Fixed distutils.test_util tear down. Original patch by
960 - collections.deque() objects now have a read-only attribute called maxlen.
962 - Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
963 it is has been populated and properly configured in order to prevent
966 - Issue #4792: Prevent a segfault in _tkinter by using the
967 guaranteed to be safe interp argument given to the PythonCmd in place of
968 the Tcl interpreter taken from a PythonCmd_ClientData.
970 - Issue #5193: Guarantee that Tkinter.Text.search returns a string.
972 - Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
973 Original patch by Akira Kitada.
975 - Issue #5385: Fixed mmap crash after resize failure on windows.
977 - Issue #5179: Fixed subprocess handle leak on failure on windows.
979 - PEP 372: Added collections.OrderedDict().
981 - The _asdict() for method for namedtuples now returns an OrderedDict().
983 - The configparser module now defaults to using an ordered dictionary.
985 - Issue #4308: httplib.IncompleteRead's repr doesn't include all of the data all
988 - Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
989 import guess_extension`` was used.
991 - Issue #1733986: Fixed mmap crash in accessing elements of second map object
992 with same tagname but larger size than first map. (Windows)
994 - Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
997 - Issue #1533164: Installed but not listed *.pyo was breaking Distutils
1000 - Issue #5378: added --quiet option to Distutils bdist_rpm command.
1002 - Issue #5052: make Distutils compatible with 2.3 again.
1004 - Deprecated methods of symtable.Symbol have been removed: is_keywordarg(),
1005 is_vararg(), and is_in_tuple().
1007 - Issue #5316: Fixed buildbot failures introduced by multiple inheritance
1010 - Issue #5287: Add exception handling around findCaller() call to help out
1013 - Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
1014 The file was resized to wrong size.
1016 - Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
1018 - Issue #2279: distutils.sdist.add_defaults now add files
1019 from the package_data and the data_files metadata.
1021 - Issue #5257: refactored all tests in distutils, so they use
1022 support.TempdirManager, to avoid writing in the tests directory.
1024 - Issue #4524: distutils build_script command failed with --with-suffix=3.
1025 Initial patch by Amaury Forgeot d'Arc.
1027 - Issue #2461: added tests for distutils.util
1029 - Issue #1008086: Fixed socket.inet_aton() to always return 4 bytes even on
1030 LP64 platforms (most 64-bit Linux, bsd, unix systems).
1032 - Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
1033 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
1035 - Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
1036 under NT and OS2. Patch by Philip Jenvey.
1038 - Issue #5128: Make compileall properly inspect bytecode to determine if needs
1039 to be recreated. This avoids a timing hole thanks to the old reliance on the
1040 ctime of the files involved.
1042 - Issue #5122: Synchronize tk load failure check to prevent a potential
1045 - Issue #1818: collections.namedtuple() now supports a keyword argument
1046 'rename' which lets invalid fieldnames be automatically converted to
1047 positional names in the form, _1, _2, ...
1049 - Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
1051 - Issue #5170: Fixed Unicode output bug in logging and added test case.
1052 This is a regression which did not occur in 2.5.
1054 - Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
1055 public documented method ``ZipImporter.get_filename()``.
1057 - Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
1058 the execution of packages by looking for and executing a ``__main__``
1059 submodule when a package name is supplied. Initial patch by Andi
1062 - Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
1063 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
1064 Tkapp_Call when calling from a thread different than the one that created
1065 the Tcl interpreter. Patch by Robert Hancock.
1067 - Issue #1520877: Now distutils.sysconfig reads $AR from the
1068 environment/Makefile. Patch by Douglas Greiman.
1070 - Issue #4285: Change sys.version_info to be a named tuple. Patch by
1073 - Issue #1276768: The verbose option was not used in the code of
1074 distutils.file_util and distutils.dir_util.
1076 - Issue #5132: Fixed trouble building extensions under Solaris with
1077 --enabled-shared activated. Initial patch by Dave Peterson.
1079 - Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
1081 - Issue #2047: shutil.move() could believe that its destination path was
1082 inside its source path if it began with the same letters (e.g. "src" vs.
1085 - Issue #4920: Fixed .next() vs .__next__() issues in the ABCs for
1086 Iterator and MutableSet.
1088 - Added the ttk module. See issue #2983: Ttk support for Tkinter.
1090 - Issue #5021: doctest.testfile() did not create __name__ and
1091 collections.namedtuple() relied on __name__ being defined.
1093 - Backport importlib from Python 3.1. Only the import_module() function has
1094 been backported to help facilitate transitions from 2.7 to 3.1.
1096 - Issue #1885: distutils. When running sdist with --formats=tar,gztar
1097 the tar file was overriden by the gztar one.
1099 - Issue #4863: distutils.mwerkscompiler has been removed.
1101 - Added a new itertools functions: combinations_with_replacement()
1104 - Issue #5032: added a step argument to itertools.count() and
1105 allowed non-integer arguments.
1107 - Fix and properly document the multiprocessing module's logging
1108 support, expose the internal levels and provide proper usage
1111 - Issue #1672332: fix unpickling of subnormal floats, which was
1112 producing a ValueError on some platforms.
1114 - Issue #3881: Help Tcl to load even when started through the
1115 unreadable local symlink to "Program Files" on Vista.
1117 - Issue #4710: Extract directories properly in the zipfile module;
1118 allow adding directories to a zipfile.
1120 - Issue #3807: _multiprocessing build fails when configure is passed
1121 --without-threads argument. When this occurs, _multiprocessing will
1122 be disabled, and not compiled.
1124 - Issue #5008: When a file is opened in append mode with the new IO library,
1125 do an explicit seek to the end of file (so that e.g. tell() returns the
1126 file size rather than 0). This is consistent with the behaviour of the
1127 traditional 2.x file object.
1129 - Issue #5013: Fixed a bug in FileHandler which occurred when the delay
1132 - Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
1133 which inherited from numbers.py which did not have __slots__ defined. The
1134 numbers hierarchy now has its own __slots__ declarations.
1136 - Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
1137 for *nix machines for negative handles and large int handles. Without this check
1138 it is possible to segfault the interpreter.
1140 - Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
1143 - Issue #1225107: inspect.isclass() returned True for instances with a custom
1146 - Issue #3997: zipfiles generated with more than 65536 files could not be
1147 opened with other applications.
1149 - Issue #1162154: inspect.getmembers() now skips attributes that raise
1150 AttributeError, e.g. a __slots__ attribute which has not been set.
1152 - Issue #1696199: Add collections.Counter() for rapid and convenient
1155 - Issue #3860: GzipFile and BZ2File now support the context manager protocol.
1157 - Issue #4272: Add an optional argument to the GzipFile constructor to override
1158 the timestamp in the gzip stream. The default value remains the current time.
1159 The information can be used by e.g. gunzip when decompressing. Patch by
1162 - Restore Python 2.3 compatibility for decimal.py.
1164 - Issue #1702551: distutils sdist was not excluding VCS directories under
1165 Windows. Inital solution by Guy Dalberto.
1167 - The _tkinter module functions "createfilehandler", "deletefilehandler",
1168 "createtimerhandler", "mainloop", "dooneevent" and "quit" have been
1169 deprecated for removal in 3.x
1171 - Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
1172 to the decimal module.
1174 - Issue #4812: add missing underscore prefix to some internal-use-only
1175 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
1177 - Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
1178 the function is not a generator.
1180 - Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
1181 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
1183 - Issue #4646: distutils was choking on empty options arg in the setup
1184 function. Original patch by Thomas Heller.
1186 - Fractions.from_float() no longer loses precision for integers too big to
1189 - Issue #4790: The nsmallest() and nlargest() functions in the heapq module
1190 did unnecessary work in the common case where no key function was specified.
1192 - Issue #3767: Convert Tk object to string in tkColorChooser.
1194 - Issue #3248: Allow placing ScrolledText in a PanedWindow.
1196 - Issue #4444: Allow assertRaises() to be used as a context handler, so that
1197 the code under test can be written inline if more practical.
1199 - Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
1200 works as expected in the interactive environment.
1202 - Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
1205 - Issue #4400: .pypirc default generated file was broken in distutils.
1207 - Issue #4736: io.BufferedRWPair's closed property now functions properly.
1209 - Issue #3954: Fix a potential SystemError in _hotshot.logreader error
1212 - Issue #4574: fix a crash in io.IncrementalNewlineDecoder when a carriage
1213 return encodes to more than one byte in the source encoding (e.g. UTF-16)
1214 and gets split on a chunk boundary.
1216 - Issue #4223: inspect.getsource() will now correctly display source code
1217 for packages loaded via zipimport (or any other conformant PEP 302
1218 loader). Original patch by Alexander Belopolsky.
1220 - Issue #4201: pdb can now access and display source code loaded via
1221 zipimport (or any other conformant PEP 302 loader). Original patch by
1222 Alexander Belopolsky.
1224 - Issue #4197: doctests in modules loaded via zipimport (or any other PEP
1225 302 conformant loader) will now work correctly in most cases (they
1226 are still subject to the constraints that exist for all code running
1227 from inside a module loaded via a PEP 302 loader and attempting to
1228 perform IO operations based on __file__). Original patch by
1229 Alexander Belopolsky.
1231 - Issues #4082 and #4512: Add runpy support to zipimport in a manner that
1232 allows backporting to maintenance branches. Original patch by
1233 Alexander Belopolsky.
1235 - Issue #4163: Use unicode-friendly word splitting in the textwrap functions
1236 when given an unicode string.
1238 - Issue #4616: TarFile.utime(): Restore directory times on Windows.
1240 - Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
1241 give correct results in the case where one argument is a quiet NaN
1242 and the other is a finite number that requires rounding.
1244 - Issue #1030250: Distutils created directories even when run with the
1247 - Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
1250 - Issue #4529: fix the parser module's validation of try-except-finally
1253 - Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
1254 not a malformed option.
1256 - Added the subprocess.check_output() convenience function to get output
1257 from a subprocess on success or raise an exception on error.
1259 - Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1260 support unusual filenames (such as those containing semi-colons) in
1261 Content-Disposition headers.
1263 - Issue #4384: Added logging integration with warnings module using
1264 captureWarnings(). This change includes a NullHandler which does nothing;
1265 it will be of use to library developers who want to avoid the "No handlers
1266 could be found for logger XXX" message which can appear if the library user
1267 doesn't configure logging.
1269 - Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
1272 - Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
1273 the ctypes module is not present.
1275 - FileIO's mode attribute now always includes ``"b"``.
1277 - Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
1279 - httplib.HTTPConnection.putheader() now accepts an arbitrary number of values
1280 for any header, matching what the documentation has claimed for a while.
1282 - Issue #3774: Fixed an error when create a Tkinter menu item without command
1285 - Fixed a modulefinder crash on certain relative imports.
1287 - Issue #4150: Pdb's "up" command now works for generator frames in post-mortem
1290 - Issue #4092: Return ArgInfo as promised in the documentation from
1291 inspect.getargvalues.
1293 - Issue #3935: Properly support list subclasses in bisect's C implementation.
1295 - Issue #4014: Don't claim that Python has an Alpha release status, in addition
1296 to claiming it is Mature.
1298 - Issue #4730: Fixed the cPickle module to handle correctly astral characters
1299 when protocol 0 is used.
1301 - Issue #1594: MacOS.GetCreatorAndType now always returns a big-endian result,
1302 to be consistent with Apple tools.
1304 - Issue #900949: plat-mac/videoreader.py no longer relies on a non-existing
1307 - Issue #16278952: plat-mac/videoreader.py now correctly imports MediaDescr
1309 - Issue #1737832 : plat-mac/EasyDialog.py no longer uses the broken aepack
1312 - Issue #1149804: macostools.mkdirs now even works when another process
1313 creates one of the needed subdirectories.
1315 - Issue #900506: added --no-zipimport flag to the bundlebuilder script
1317 - Issue #841800: bundlebuilder now works with 'python -O'
1319 - Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
1320 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
1322 - Issue #5104: The socket module now raises OverflowError when 16-bit port and
1323 protocol numbers are supplied outside the allowed 0-65536 range on bind()
1324 and getservbyport().
1326 - Issue #999042: The Python compiler now handles explict global statements
1327 correctly (should be assigned using STORE_GLOBAL opcode).
1329 - Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
1330 new arguments introduced in 2.5.
1332 - Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
1333 makeunicodedata.py and regenerated the Unicode database (This fixes
1334 u'\u1d79'.lower() == '\x00').
1336 - Windows locale mapping updated to Vista.
1341 - Ttk demos added in Demo/tkinter/ttk/
1343 - Issue #4677: add two list comprehension tests to pybench.
1348 - Add 2 new options to ``--with-universal-archs`` on MacOSX:
1349 ``intel`` builds a distribution with ``i386`` and ``x86_64`` architectures,
1350 while ``3-way`` builds a distribution with the ``ppc``, ``i386``
1351 and ``x86_64`` architectures.
1353 - Issue #6802: Fix build issues on MacOSX 10.6
1355 - Issue #6244: Allow detect_tkinter to look for Tcl/Tk 8.6.
1357 - Issue 5390: Add uninstall icon independent of whether file
1358 extensions are installed.
1360 - Issue 5809: Specifying both --enable-framework and --enable-shared is
1361 an error. Configure now explicity tells you about this.
1363 - Issue #3585: Add pkg-config support. It creates a python-2.7.pc file
1364 and a python.pc symlink in the $(LIBDIR)/pkgconfig directory. Patch by
1367 - Issue #6094: Build correctly with Subversion 1.7.
1369 - Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
1371 - Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
1372 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
1374 - Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
1375 the order that backends for the dbm extension are checked.
1377 - Link the shared python library with $(MODLIBS).
1379 - Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
1381 - Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
1383 - Issue #4895: Use _strdup on Windows CE.
1385 - Issue #4472: "configure --enable-shared" now works on OSX
1387 - Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
1389 - Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
1391 - Issue #4289: Remove Cancel button from AdvancedDlg.
1393 - Issue #1656675: Register a drop handler for .py* files on Windows.
1395 - Issue #4120: Exclude manifest from extension modules in VS2008.
1397 - Issue #4091: Install pythonxy.dll in system32 again.
1399 - Issue #4018: Disable "for me" installations on Vista.
1401 - Issue #3758: Add ``patchcheck`` build target to .PHONY.
1403 - Issue #4204: Fixed module build errors on FreeBSD 4.
1408 - Issue #6556: Fixed the Distutils configuration files location explanation
1411 - Issue #6801 : symmetric_difference_update also accepts |.
1412 Thanks to Carl Chenet.
1417 - Add new C-API function PyOS_string_to_double, and deprecated
1418 PyOS_ascii_atof and PyOS_ascii_strtod.
1420 - Removed _PyOS_double_to_string. Use PyOS_double_to_string
1421 instead. This is in preparation for (but not strictly related to)
1422 issue #7117, short float repr.
1424 - Issue #6624: PyArg_ParseTuple with "s" format when parsing argument with
1425 NULL: Bogus TypeError detail string.
1427 - Issue #5954: Add a PyFrame_GetLineNumber() function to replace most uses of
1430 - Issue #5959: Add a PyCode_NewEmpty() function to create a new empty code
1431 object at a specified file, function, and line number.
1433 - Issue #1419652: Change the first argument to PyImport_AppendInittab() to
1434 ``const char *`` as the string is stored beyond the call.
1436 - Some PyBytes_* aliases have been removed because they don't exist in 3.x.
1438 - Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
1439 for negative arguments. Previously, it raised TypeError.
1441 - Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
1443 - Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
1444 the GIL is released, or owned by another thread.
1446 - Issue #4122: On Windows, fix a compilation error when using the
1447 Py_UNICODE_ISSPACE macro in an extension module.
1449 - Issue #4293: Py_AddPendingCall is now thread safe and can be used for
1450 asynchronous notifications to python from any thread. Documentation added.
1455 - Issue #7078: Set struct.__doc__ from _struct.__doc__.
1457 - Issue #3366: Add gamma function to math module.
1459 - Issue #6823: Allow time.strftime() to accept a tuple with a isdst field
1460 outside of the range of [-1, 1] by normalizing the value to within that
1463 - Issue #6877: Make it possible to link the readline extension to libedit
1466 - Issue #6944: Fix a SystemError when socket.getnameinfo() was called
1467 with something other than a tuple as first argument.
1469 - Issue #6865: Fix reference counting issue in the initialization of the pwd
1472 - Issue #6848: Fix curses module build failure on OS X 10.6.
1474 - Fix a segfault in expat when given a specially crafted input lead to the
1475 tokenizer not stopping.
1477 - Issue #6561: '\d' in a regex now matches only characters with
1478 Unicode category 'Nd' (Number, Decimal Digit). Previously it also
1479 matched characters with category 'No'.
1481 - Issue #1523: Remove deprecated overflow wrapping for struct.pack
1482 with an integer format code ('bBhHiIlLqQ'). Packing an out-of-range
1483 integer now consistently raises struct.error.
1485 - Issues #1530559, #1741130: Fix various struct.pack inconsistencies
1486 for the integer formats ('bBhHiIlLqQ'). In the following, '*'
1487 represents any of '=', '<', '>'.
1489 - Packing a float now always gives a Deprecation Warning.
1490 Previously it only warned for 'I', 'L', '*B', '*H', '*I', '*L'.
1492 - If x is not an int, long or float, then packing x will always
1493 result in struct.error. Previously an x with an __int__ method
1494 could be packed by 'b', 'B', 'h', 'H', 'i', 'l', '*b', '*h'
1495 ,'*i', '*l', and an x with a __long__ method could be packed by
1496 'q', 'Q', '*q', '*Q'; for x with neither __int__ nor __long__,
1497 TypeError used to be raised (with a confusing error message) for
1498 'I', 'L', '*B', '*H', '*I', '*L', and struct.error in other cases.
1500 - Issue #4873: Fix resource leaks in error cases of pwd and grp.
1502 - Issue #4751: For hashlib algorithms provided by OpenSSL, the Python
1503 GIL is now released during computation on data lengths >= 2048 bytes.
1505 - Issue #3745: Fix hashlib to always reject unicode and non buffer-api
1506 supporting objects as input no matter how it was compiled (built in
1507 implementations or external openssl library).
1509 - Issue #4397: Fix occasional test_socket failure on OS X.
1511 - Issue #4279: Fix build of parsermodule under Cygwin.
1513 - Issue #4051: Prevent conflict of UNICODE macros in cPickle.
1515 - Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
1517 - Issue #1040026: Fix os.times result on systems where HZ is incorrect.
1519 - Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
1522 - Issue #4365: Add crtassem.h constants to the msvcrt module.
1524 - Issue #4396: The parser module now correctly validates the with statement.
1526 - Issue #5228: Make functools.partial objects can now be pickled.
1531 - Issue #7222: Make thread "reaping" more reliable so that reference
1532 leak-chasing test runs give sensible results. The previous method of
1533 reaping threads could return successfully while some Thread objects were
1534 still referenced. This also introduces a new private function:
1535 :func:`thread._count()`.
1537 - Issue #7151: fixed regrtest -j so that output to stderr from a test no
1538 longer runs the risk of causing the worker thread to fail.
1540 - Issue #7055: test___all__ now greedily detects all modules which have an
1541 __all__ attribute, rather than using a hardcoded and incomplete list.
1543 - Issue #7058: Added save/restore for things like sys.argv and cwd to
1544 runtest_inner in regrtest, with warnings if the called test modifies them,
1545 and a new section in the summary report at the end.
1547 - Issue #7042: Fix test_signal (test_itimer_virtual) failure on OS X 10.6.
1549 - Issue #6806: test_platform failed under OS X 10.6.0 because ``sw_ver`` leaves
1550 off the trailing 0 in the version number.
1552 - Issue #5450: Moved tests involving loading tk from Lib/test/test_tcl to
1553 Lib/lib-tk/test/test_tkinter/test_loadtk. With this, these tests demonstrate
1554 the same behaviour as test_ttkguionly (and now also test_tk) which is to
1555 skip the tests if DISPLAY is defined but can't be used.
1557 - Issue #6152: New option '-j'/'--multiprocess' for regrtest allows running
1558 regression tests in parallel, shortening the total runtime.
1560 - Issue #5354: New test support function import_fresh_module() makes
1561 it easy to import both normal and optimised versions of modules.
1562 test_heapq and test_warnings have been adjusted to use it, tests for
1563 other modules with both C and Python implementations in the stdlib
1564 can be adjusted to use it over time.
1566 - Fix test_warnings to no longer reset the warnings filter.
1568 - Fix test_logging to no longer reset the warnings filter.
1570 - Issue #5635: Fix running test_sys with tracing enabled.
1572 - regrtest no longer treats ImportError as equivalent to SkipTest. Imports
1573 that should cause a test to be skipped are now done using import_module
1574 from test support, which does the conversion.
1576 - Issue #5083: New 'gui' resource for regrtest.
1578 - Issue #5837: Certain sequences of calls to set() and unset() for
1579 support.EnvironmentVarGuard objects restored the environment variables
1580 incorrectly on __exit__.
1582 - Issue #2389: Array objects are now pickled in a portable manner.
1585 What's New in Python 2.6 final
1586 ==============================
1588 *Release date: 01-Oct-2008*
1593 - Issue #3967: Fixed a crash in the count() and find() methods of string-like
1594 objects, when the "start" parameter is a huge value.
1596 - Issue #3965: Fixed a crash on Windows when open() is given an invalid
1597 filename or mode, and the filename is a unicode string.
1599 - Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
1604 - Issue #3965: Allow repeated calls to turtle.Screen, by making it a
1605 true singleton object.
1607 - Issue #3895: It was possible to crash the interpreter when an external timer
1608 was used with cProfile that returned an object that could not be converted
1611 - Issue #3950: Made turtle respect scale factors.
1613 - Issue #3547: Fixed ctypes structures bitfields of varying integer
1616 - Issue #3879: A regression in urllib.getproxies_enviroment was fixed.
1618 - Issue #3863: Disabled a unit test of fork being called from a thread
1619 when running on platforms known to exhibit OS bugs when attempting that.
1624 - Bug #3989: Package the 2to3 script (as 2to3.py) in the Windows
1627 - Bug #3887: Package x64 version of CRT for AMD64 Windows binaries.
1630 What's New in Python 2.6 release candidate 2?
1631 =============================================
1633 *Release date: 17-Sep-2008*
1641 - Security Issue #2: imageop did not validate arguments correctly and could
1642 segfault as a result.
1644 - Issue #3886: Possible integer overflows in the _hashopenssl module were
1650 - Issue #3850: recursion tests in Tools/scripts/find_recursion_limit.py can raise
1651 AttributeError instead of RuntimeError, depending in which C API call
1652 exactly the recursion limit is exceeded. Consequently, both exception types
1653 are caught and silenced.
1658 - Issue #3617: Include a licensing statement regarding the Microsoft
1659 C runtime in the Windows installer.
1662 What's New in Python 2.6 release candidate 1?
1663 =============================================
1665 *Release date: 12-Sep-2008*
1670 - Issue #3642: Suppress warning in obmalloc when size_t is larger than uint.
1672 - Issue #3743: In a few places, PY_FORMAT_SIZE_T was incorrectly used with
1673 PyString_FromFormat or PyErr_Format to display size_t values. The macro
1674 PY_FORMAT_SIZE_T is designed to select the correct format for the OS
1675 ``printf`` function, whereas PyString_FromFormat has an independent
1676 implementation and uses "%zd" on all platforms for size_t values.
1677 This makes a difference on win64, where ``printf`` needs "%Id" to display
1680 - Issue #3634: _weakref.ref(Exception).__init__() gave invalid return value on
1683 - Issue #3777: long() applied to a float object now always return a long
1684 object; previously an int would be returned for small values. the __long__
1685 method is allowed to return either an int or a long, but the behaviour of
1686 float objects should not change to respect backward compatibility.
1688 - Issue #3751: str.rpartition would perform a left-partition when called with
1691 - Issue #3683: Fix compilation when --without-threads is given.
1693 - Issue #3668: Fix a memory leak with the "s*" argument parser in
1694 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
1695 was correctly parsed but parsing of subsequent arguments failed.
1697 - Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
1698 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
1699 mechanism. In the process, fix a bug where isinstance() and issubclass(),
1700 when given a tuple of classes as second argument, were looking up
1701 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
1704 - Fix crashes on memory allocation failure found with failmalloc.
1706 - Fix memory leaks found with valgrind and update suppressions file.
1708 - Fix compiler warnings in opt mode which would lead to invalid memory reads.
1710 - Fix problem using wrong name in decimal module reported by pychecker.
1712 - Silenced another compiler warning about a used but not defined
1713 function 'stringlib_contains_obj'.
1715 - Added warnings on the use of ``__getslice__``, ``__setslice__``, or
1718 - Issue #3678: Correctly pass LDFLAGS and LDLAST to the linker on shared
1719 library targets in the Makefile.
1721 - Issue #1204: The configure script now tests for additional libraries
1722 that may be required when linking against readline. This fixes issues
1723 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
1728 - Aliased PyObject_Bytes to PyObject_Str.
1733 - Issue #3640: Pickling a list or a dict uses less local variables, to reduce
1734 stack usage in the case of deeply nested objects.
1736 - Issue #3629: Fix sre "bytecode" validator for an end case.
1738 - Issue #3811: The Unicode database was updated to 5.1.
1740 - Issue #3781: Further warnings.catch_warnings() cleanup to prevent
1741 silent misbehaviour when a single instance is nested in multiple
1742 with statements, or when the methods are invoked in the wrong order.
1744 - Issue #3809: Fixed spurious 'test.blah' file left behind by test_logging.
1746 - Issue #3781: Clean up the API for warnings.catch_warnings() by having it
1747 return a list or None rather than a custom object.
1749 - Issue #1638033: Cookie.Morsel gained the httponly attribute.
1751 - Issue #3535: zipfile couldn't read some zip files larger than 2GB.
1753 - Issue #3776: Deprecate the bsddb package for removal in 3.0.
1755 - Issue #3762: platform.architecture() fails if python is lanched via
1758 - Issue #3772: Fixed regression problem in StreamHandler.emit().
1760 - Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
1761 to the urlparse one. Added a PendingDeprecationWarning in the old
1762 module, it will be deprecated in the future.
1764 - Issue #2562: Fix distutils PKG-INFO writing logic to allow having
1765 non-ascii characters and Unicode in setup.py meta-data.
1767 - Issue #3726: Allow spaces in separators in logging configuration files.
1769 - Issue #3719: platform.architecture() fails if there are spaces in the
1770 path to the Python binary.
1772 - Issue 3602: Moved test.test_support.catch_warning() to
1773 warnings.catch_warnings() along with some API cleanup. Expanding the tests
1774 for catch_warnings() also led to an improvement in the raising of a
1775 DeprecationWarning related to warnings.warn_explicit().
1777 - The deprecation warnings for the old camelCase threading API were removed.
1779 - logging: fixed lack of use of encoding attribute specified on a stream.
1781 - Silenced a trivial compiler warning in the sqlite module.
1783 - Fixed two format strings in the _collections module.
1785 - Issue #3703: _fileio.FileIO gave unhelpful error message when trying to open a
1788 - Issue #3708: os.urandom no longer goes into an infinite loop when passed a
1789 non-integer floating point number.
1791 - Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
1797 - Issue #4301: Patch the logging module to add processName support, remove
1798 _check_logger_class from multiprocessing.
1800 - Issue #2975: When compiling several extension modules with Visual Studio 2008
1801 from the same python interpreter, some environment variables would grow
1804 - Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
1805 exploitation of poor argument checking.
1807 - sqlite3: Changed docstring of iterdump() to mark method as "Non-standard".
1809 - Issue #3103: Reduced globals symbols used by sqlite3 module and made sure all
1810 remaining ones have "pysqlite_" prefix.
1812 - Issue #3846: Release the GIL during sqlite3_prepare calls. This improves
1813 concurrent access to the same SQLite database from multiple
1819 - Issue #3781: Add test.test_support.check_warnings() as a convenience
1820 wrapper for warnings.catch_warnings() that makes it easier to check
1821 that expected warning messages are being reported.
1823 - Issue #3796: Some tests functions were not enabled in test_float.
1825 - Issue #3768: Move test_py3kwarn over to the new API for catch_warnings().
1830 - Issue #3833: Use a different upgrade code for Win64 installers.
1832 - Issue #2271: Set SecureCustomProperties so that installation will properly
1833 use the TARGETDIR even for unprivileged users.
1835 - Allow passing the MSI file name to merge.py.
1837 - Issue #3758: Rename the 'check' target to 'patchcheck' so as to not clash
1838 with GNU build target guidelines.
1841 What's New in Python 2.6 beta 3?
1842 ================================
1844 *Release date: 20-Aug-2008*
1849 - Issue #1878: Remove Py_TPFLAGS_HAVE_VERSION_TAG from
1850 Py_TPFLAGS_DEFAULT when not building the core. This means 3rd party
1851 extensions do not automatically benefit from the class attribute
1852 cache; they will have to explicitly add Py_TPFLAGS_HAVE_VERSION_TAG
1853 to their tp_flags field if they care. This is a backwards
1854 compatibility feature; in 3.0, all types will use the cache by
1857 - Keyword arguments can now follow starred arguments. (``f(a, *args,
1858 keyword=23)`` is now valid syntax.)
1860 - ctypes function pointers that are COM methods have a boolean True
1863 - Issue #3139: Make buffer-interface thread-safe wrt. PyArg_ParseTuple,
1864 by denying s# to parse objects that have a releasebuffer procedure,
1867 - Issue #3537: Fix an assertion failure when an empty but presized dict
1868 object was stored in the freelist.
1870 - Issue #1481296: Make long(float('nan')) and int(float('nan')) raise
1871 ValueError consistently across platforms.
1873 - Issue #3479: On platforms where sizeof(int) is smaller than sizeof(long)
1874 (64bit Unix, for example), unichr() would truncate its argument and return
1875 u'\x00' for unichr(2**32). Now it properly raises an OverflowError.
1877 - Apply security patches from Apple.
1879 - Issue #2542: Now that issubclass() may call arbitrary code, ensure that
1880 PyErr_ExceptionMatches returns 0 when an exception occurs there.
1882 - Issue #1819: function calls with several named parameters are now on
1883 average 35% faster (as measured by pybench).
1885 - Issue #2378: An unexpected UnboundLocalError or NameError could appear when
1886 the python debugger steps into a class statement: the free variables (local
1887 variables defined in an outer scope) would be deleted from the outer scope.
1889 - Issue #2620: Overflow checking when allocating or reallocating memory
1890 was not always being done properly in some python types and extension
1891 modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
1892 all been updated to perform better checks and places in the code that
1893 would previously leak memory on the error path when such an allocation
1894 failed have been fixed.
1899 - Issue #3612: Added some missing basic types in ctypes.wintypes.
1901 - The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
1902 symtable.Symbol have been deprecated for removal in 3.0 and the next release.
1904 - Issue #2234: distutils failed for some versions of the cygwin compiler. The
1905 version reported by these tools does not necessarily follow the python
1906 version numbering scheme, so the module is less strict when parsing it.
1908 - Issue #2235: Added Py3k warnings for types which will become unhashable
1909 under the stricter __hash__ inheritance rules in 3.0. Several types
1910 which did not meet the rules for hash invariants and were already
1911 unhashable in 3.0 have now been explicitly flagged as unhashable in
1912 2.6 as well (collections.Mapping, collections.Set, unittest.TestSuite,
1913 xml.dom.minidom.NamedNodeMap, numbers.Number, UserList.UserList)
1915 - Update __all__ for cookielib, csv, os, urllib2, and weakref to include things
1916 imported into the module but exposed as part of the module's API.
1918 - Remove an unneeded import of abc.ABCMeta from 'inspect'.
1920 - Remove unneeded imports of 'sys' and 'warnings' from 'io'.
1922 - Remove unneeded imports of 'warnings' from shelve, filecmp, and dummy_thread.
1924 - Issue #3575: Incremental decoder's decode function now takes bytearray
1925 by using 's*' instead of 't#'.
1927 - Issue #2222: Fixed reference leak when occurred os.rename()
1928 fails unicode conversion on 2nd parameter. (windows only)
1930 - Issue 2464. urllib2 now supports a malformation in the URL received
1933 - Silence the DeprecationWarning raised when importing mimetools in
1934 BaseHTTPServer, cgi (and rfc822), httplib.
1936 - Issue #2776: fixed small issue when handling an URL with double slash
1937 after a 302 response in the case of not going through a proxy.
1939 - Issue #2676: in the email package, content-type parsing was hanging on
1940 pathological input because of quadratic or exponential behaviour of a
1943 - Issue #3476: binary buffered reading through the new "io" library is now
1946 - Silence the DeprecationWarning of rfc822 when it is imported by mimetools
1947 since mimetools itself is deprecated. Because modules are cached, all
1948 subsequent imports of rfc822 will not raise a visible DeprecationWarning.
1950 - Issue #3134: shutil referenced undefined WindowsError symbol.
1952 - Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
1953 menu entries were not deleted.
1955 - Copied the implementation of reduce() to _functools.reduce() to have a
1956 version that did not raise a DeprecationWarning under -3.
1958 - Issue #3205: When iterating over a BZ2File fails allocating memory, raise
1959 a MemoryError rather than silently stop the iteration.
1961 - Issue #3487: sre "bytecode" validator. Passing invalid "re-bytecode"
1962 to _sre.compile() will now be rejected. This should not affect anybody
1963 since the re.compile() function never generates invalid re-bytecode.
1965 - Issue #3436: Make csv.DictReader's fieldnames attribute a property so that
1966 upon first access it can be automatically initialized from the csv file if
1967 it wasn't initialized during instantiation.
1969 - Issue #2338: Create imp.reload() to help with transitioning to Python 3.0 as
1970 the reload() built-in has been removed.
1972 - Changed code in the following modules/packages to remove warnings raised
1973 while running under the ``-3`` flag: aifc, asynchat, asyncore, bdb, bsddb,
1974 ConfigParser, cookielib, csv, difflib, distutils, DocXMLRPCServer, email,
1975 filecmp, fileinput, inspect, logging, modulefinder, pdb, pickle, profile,
1976 pstats, pydoc, re, rlcompleter, SimpleXMLRPCServer, shelve, socket,
1977 subprocess, sqlite3, tarfile, Tkinter, test.test_support, textwrap,
1978 threading, tokenize, traceback, urlparse, wsgiref, xml, xmlrpclib.
1980 - Issue #3039: Fix tarfile.TarFileCompat.writestr() which always
1981 raised an AttributeError.
1983 - Issue #2523: Fix quadratic behaviour when read()ing a binary file without
1984 asking for a specific length. This problem only affected files opened
1985 using the new "io" module, not the built-in open() function.
1987 - Issue #3449: Update decimal module to use most recent specification
1988 (v. 1.68) and tests (v. 2.58) from IBM.
1990 - Issue 3437: Bug fix in robotparser parsing of Allow: lines.
1992 - Issue 1592: Improve error reporting when operations are attempted
1995 - Deprecate the "ast" parser function aliases.
1997 - Issue #3120: On 64-bit Windows the subprocess module was truncating handles.
1999 - Issue #3303: Fix a crash in locale.strcoll() when calling it with
2002 - Issue #3302: Fix several crashes when calling locale's gettext functions
2003 with None arguments.
2005 - Issue #3389: Allow resolving dotted names for handlers in logging
2006 configuration files.
2008 - Deprecate the sunaudio module for removal in Python 3.0.
2010 - Issue #3394: zipfile.writestr sets external attributes when passed a
2011 file name rather than a ZipInfo instance, so files are extracted with
2012 mode 0600 rather than 000 under Unix.
2014 - Issue #1857: subprocess.Popen.poll gained an additional _deadstate keyword
2015 argument in python 2.5, this broke code that subclassed Popen to include its
2016 own poll method. Fixed my moving _deadstate to an _internal_poll method.
2021 - Generate the PatternGrammar pickle during "make install".
2026 - Issue #2235: the C API function PyObject_HashNotImplemented and its
2027 interaction with the tp_hash slot (added in 2.6b2) are now documented
2029 - Issue #643841: The language reference now provides more detailed
2030 coverage of the lookup process for special methods. The disclaimers
2031 regarding lack of coverage of new-style classes have also been
2032 removed, since the coverage is now fairly reasonable.
2035 What's New in Python 2.6 beta 2?
2036 ================================
2038 *Release date: 17-Jul-2008*
2043 - Issue #3156: Fix inconsistent behavior of the bytearray type: all
2044 its methods now allow for items objects that can be converted to
2045 an integer using operator.index().
2047 - Issue #3360: Fix incorrect parsing of '020000000000.0', which
2048 produced a ValueError instead of giving the correct float.
2050 - Issue #3083: Add alternate (#) formatting for bin, oct, hex output
2051 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
2053 - Issue #3008: the float type has a new instance method 'float.hex'
2054 and a new class method 'float.fromhex' to convert floating-point
2055 numbers to and from hexadecimal strings, respectively.
2057 - Issue #2235: __hash__ is once again inherited by default. To allow
2058 collections.Hashable to remain meaningful in the presence of the
2059 default hash implementation (object.__hash__), it is now possible
2060 to explicit block inheritance of hash by setting __hash__=None at
2061 the Python level, or tp_hash=PyObject_HashNotImplemented at the C
2064 - Issue #3221: Issue a RuntimeWarning instead of raising SystemError if
2065 the parent module cannot be found while performing an absolute import.
2066 This means that an incorrectly defined __package__ attribute will
2067 now only prevent relative imports in that module rather than causing
2068 all imports from that module to fail.
2070 - Issue #2517: Allow unicode messages in Exceptions again by correctly
2071 bypassing the instance dictionary when looking up __unicode__ on
2074 - Issue #3242: Fix a crash inside the print statement, if sys.stdout is
2075 set to a custom object whose write() method happens to install
2076 another file in sys.stdout.
2078 - Issue #3088: Corrected a race condition in classes derived from
2079 threading.local: the first member set by a thread could be saved in
2080 another thread's dictionary.
2082 - Issue #3004: Minor change to slice.indices(): the start and stop
2083 arguments are now treated identically, making the behaviour easier
2084 to describe and understand. For example, slice(None, -10,
2085 1).indices(9) now returns (0, 0, 1) instead of (0, -1, 1), and
2086 slice(None, 10, -1).indices(10) returns (9, 9, -1) instead of (9,
2089 - Issue #3219: Calling a function with repeated keyword arguments,
2090 f(a=2, a=23), would not cause a syntax error. This was a regression
2091 from 2.4 caused by the switch to the new compiler.
2093 - Issue #2862: Make int and float freelist management consistent with
2094 other freelists. Changes their CompactFreeList apis into
2095 ClearFreeList apis and calls them via gc.collect().
2100 - Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
2101 api functions without holding the GIL, which could lead to a fatal
2102 error when they failed.
2104 - Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
2106 - Issue #3395: fix reference in test_multiprocessing to old debugInfo method
2108 - Issue #3312: Fix two crashes in sqlite3.
2110 - Issue #1608818: Fix misbehavior in os.listdir() if readdir() fails.
2112 - Issue #3125: Remove copy_reg in multiprocessing and replace it with
2113 ForkingPickler.register() to resolve conflict with ctypes.
2115 - Issue #3090: Fixed ARCHFLAGS parsing on OS/X
2117 - Issue #3313: Fixed a crash when a failed dlopen() call does not set
2118 a valid dlerror() message.
2120 - Issue #3258: Fixed a crash when a ctypes POINTER type to an
2121 incomplete structure was created.
2123 - Issue #3339: dummy_thread.acquire() should not return None.
2125 - Issue #3285: Fractions from_float() and from_decimal() accept Integral arguments.
2127 - Issue #3301: Bisect module behaved badly when lo was negative.
2129 - Issue #839496: SimpleHTTPServer used to open text files in text mode. This is
2130 both unnecessary (HTTP allows text content to be sent in several forms) and
2131 wrong because the actual transmitted size could differ from the
2132 content-length. The problem had been corrected in the 2.4 branch, but never
2135 - Issue #2663: add filtering capability to shutil.copytree().
2137 - Issue #1622: Correct interpretation of various ZIP header fields.
2139 - Issue #1526: Allow more than 64k files to be added to Zip64 file.
2141 - Issue #1746: Correct handling of zipfile archive comments (previously
2142 archives with comments over 4k were flagged as invalid). Allow writing
2143 Zip files with archives by setting the 'comment' attribute of a ZipFile.
2145 - Issue #449227: The rlcompleter module now adds "(" to callable objects
2148 - Issue #3190: Pydoc now hides the automatic module attribute __package__ (the
2149 handling is now the same as that of other special attributes like __name__).
2151 - Issue #2885 (partial): The urllib.urlopen() function has been deprecated for
2152 removal in Python 3.0 in favor of urllib2.urlopen().
2154 - Issue #2113: Fix error in subprocess.Popen if the select system call is
2155 interrupted by a signal.
2157 - Issue #3309: Fix bz2.BZFile iterator to release its internal lock
2158 properly when raising an exception due to the bz2file being closed.
2159 Prevents a deadlock.
2161 - Issue #3094: httplib.HTTPSConnection Host: headers no longer include the
2162 redundant ":443" port number designation when the connection is using the
2163 default https port (443).
2165 - Issue #874900: after an os.fork() call the threading module state is cleaned
2166 up in the child process to prevent deadlock and report proper thread counts
2167 if the new process uses the threading module.
2172 - test.test_support.catch_warning now keeps track of all warnings it sees
2173 and is now better documented. Explicit unit tests for this context manager
2174 have been added to test_warnings.
2179 - Issue #3215: Build sqlite3 as sqlite3.dll, not sqlite3.pyd.
2185 - Document that robotparser has been renamed to urllib.robotparser in
2188 - Document that urlparse has been renamed to urllib.parse in Python 3.0.
2190 - Document that urllib2 is split across multiple modules and renamed in
2193 - Document that urllib is split across multiple modules and renamed in
2197 What's New in Python 2.6 beta 1?
2198 ================================
2200 *Release date: 18-June-2008*
2205 - Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
2206 argument being anything other than a dict or None. Also fixed a bug in error
2207 handling when 'message' and 'category' were both set to None, triggering a
2210 - Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
2211 holds the last (strong) reference to its referent.
2213 - Add future_builtins.ascii().
2215 - Several set methods now accept multiple arguments: update(), union(),
2216 intersection(), intersection_update(), difference(), and difference_update().
2218 - Issue #2898: Added sys.getsizeof() to retrieve size of objects in bytes.
2220 - New environment variable PYTHONIOENCODING.
2222 - Patch #2488: Add sys.maxsize.
2224 - Issue #2353: file.xreadlines() now emits a Py3k warning.
2226 - Issue #2863: generators now have a ``gen.__name__`` attribute that
2227 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
2228 ``func.func_code.co_name``. The repr() of a generator now also
2231 - Issue #2831: enumerate() now has a ``start`` argument.
2233 - Issue #2801: fix bug in the float.is_integer method where a
2234 ValueError was sometimes incorrectly raised.
2236 - Issue #2790: sys.flags was not properly exposing its bytes_warning
2239 - Issue #2196: hasattr() now lets exceptions which do not inherit
2240 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
2243 - Added checks for integer overflows, contributed by Google. Some are
2244 only available if asserts are left in the code, in cases where they
2245 can't be triggered from Python code.
2250 - Issue #1179: [CVE-2007-4965] Integer overflow in imageop module.
2252 - Issue #3116: marshal.dumps() had quadratic behavior for strings > 32Mb.
2254 - Issue #2138: Add factorial() to the math module.
2256 - The heapq module does comparisons using LT instead of LE. This
2257 makes its implementation match that used by list.sort().
2259 - Issue #2819: add full-precision summation function to math module,
2260 based on Hettinger's ASPN Python Cookbook recipe.
2262 - Issue #2592: delegate nb_index and the floor/truediv slots in
2265 - Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
2268 - Support for Windows 9x has been removed from the winsound module.
2270 - bsddb module updated to version 4.7.3.
2271 http://www.jcea.es/programacion/pybsddb.htm#bsddb3-4.7.3. This
2272 code should be compatible with Python 3.0.
2274 - Issue #2858: Fix potential memory corruption when
2275 bsddb.db.DBEnv.lock_get and other bsddb.db object constructors
2276 raised an exception.
2278 - Issue #2669: bsddb/__init__.py iteration no longer silently fails when
2279 the database has changed size during iteration. It now raises a
2280 RuntimeError in the same manner as a dictionary.
2282 - Issue #2870: cmathmodule.c compile error.
2284 - Added a threading.Thread.ident property.
2289 - logging.config: Removed out-of-date comment in _install_handlers and
2290 used issubclass in place of equality comparison of classes.
2292 - Issue #2722: Now the os.getcwd() supports very long path names.
2294 - Issue #2888: Fixed the behaviour of pprint when working with nested
2295 structures, to match the behaviour of 2.5 and 3.0 (now follows the common
2298 - Issue #1817: cgi now correctly handles the querystring on POST requests
2300 - Issue #3136: fileConfig()'s disabling of old loggers is now conditional via
2301 an optional disable_existing_loggers parameter, but the default value is
2302 such that the old behaviour is preserved. Thanks to Leandro Lucarella for
2305 - Issue #3126: StreamHandler and FileHandler check before calling "flush" and
2306 "close" that the stream object has these, using hasattr (thanks to bobf for
2309 - Issue #2912: platform.uname now tries to determine unknown information even if
2312 - The rfc822 module has been deprecated for removal in 3.0.
2314 - The mimetools module has been deprecated for removal in 3.0.
2316 - The ctypes.byref function now takes an optional second parameter
2317 which allows to specify an offset in bytes for the constructed
2318 pointer-like object.
2320 - Added the ast module.
2322 - Added the multiprocessing module, PEP 371.
2324 - Factored out the indentation cleaning from inspect.getdoc() into
2325 inspect.cleandoc() to ease standalone use.
2327 - Issue #1798: Add ctypes calling convention that allows safe access
2330 - Issue #2404: ctypes objects support the new pep3118 buffer interface.
2332 - Patch #2125: Add GetInteger and GetString methods for
2333 msilib.Record objects.
2335 - Issue #2782: The datetime module's strftime methods now accept
2336 unicode format strings just as time.strftime always has.
2338 - The sgmllib and htmllib modules have been deprecated for removal
2341 - Issue #3011: locale module alias table was updated to the latest
2342 version from the X.org locale.alias file.
2344 - Issue #1797 (partial fix): ctypes NULL function pointers have a
2345 False boolean value now.
2347 - Issue #2985: Allow 64-bit integer responses (``<i8>``) in XMLRPC
2350 - Issue #2877: The UserString.MutableString class has been removed in
2353 - Do not close external file objects passed to tarfile.open(mode='w:bz2')
2354 when the TarFile is closed.
2356 - Issue #2959: For consistency with other file-like objects, gzip's
2357 GzipFile.close() can now be called multiple times without raising
2360 - Issue #1390: Raise ValueError in toxml when an invalid comment would
2361 otherwise be produced.
2363 - Issue #2914: TimedRotatingFileHandler now takes an optional keyword
2364 argument "utc" to use UTC time rather than local time.
2366 - Issue #2929: TimedRotatingFileHandler was using the wrong path when
2367 deleting old log files (filename only instead of full path).
2369 - Issue #1775025: You can now specify zipfile members to open(),
2370 read() or extract() via a ZipInfo instance. This allows handling
2371 duplicate filenames in zipfiles.
2373 - Issue #961805: Fix Text.edit_modified() in Tkinter.
2375 - Issue #1793: Function ctypes.util.find_msvcrt() added that returns
2376 the name of the C runtime library that Python uses.
2377 ctypes.util.find_library(name) now call this function when name is
2380 - The statvfs module has been deprecated for removal in Python 3.0.
2382 - The sunaudiodev and SUNAUDIODEV modules have been deprecated for
2383 removal in Python 3.0.
2385 - The WAIT module from IRIX has been deprecated for removal in Python
2388 - The torgb module from IRIX has been deprecated for removal in Python
2391 - The SV module from IRIX has been deprecated for removal in Python
2394 - The readcd module from IRIX has been deprecated for removal in
2397 - The panelparser module from IRIX has been deprecated for removal in
2400 - The panel module from IRIX has been deprecated for removal in Python
2403 - The jpeg module from IRIX has been deprecated for removal in Python
2406 - The IOCTL module from IRIX has been deprecated for removal in Python
2409 - The IN module from IRIX has been deprecated for removal in Python
2412 - The imgfile module from IRIX has been deprecated for removal in
2415 - The GLWS module from IRIX has been deprecated for removal in Python
2418 - The GET module from IRIX has been deprecated for removal in Python
2421 - The fm module from IRIX has been deprecated for removal in Python
2424 - The FL, flp, and fl modules from IRIX have been deprecated for
2425 removal in Python 3.0.
2427 - The FILE module on IRIX has been deprecated for removal in Python
2430 - The ERRNO module on IRIX has been deprecated for removal in Python
2433 - The DEVICE, GL, gl, and cgen modules (which indirectly includes
2434 cgensupport) have been deprecated for removal in Python 3.0.
2436 - The CL, CL_old, and cl modules for IRIX have been deprecated for
2437 removal in Python 3.0.
2439 - The cdplayer module for IRIX has been deprecated for removal in
2442 - The cddb module for IRIX has been deprecated for removal in Python
2445 - The cd and CD modules for IRIX have been deprecated for removal in
2448 - The al and AL modules for IRIX have been deprecated for removal in
2451 - Issue #1713041: fix pprint's handling of maximum depth.
2453 - The timing module has been deprecated for removal in Python 3.0.
2455 - The sv module has been deprecated for removal in Python 3.0.
2457 - The multifile module has been deprecated as per PEP 4.
2459 - The imageop module has been deprecated for removal in Python 3.0.
2461 - Issue #2250: Exceptions raised during evaluation of names in
2462 rlcompleter's ``Completer.complete()`` method are now caught and
2465 - Issue #2659: Added ``break_on_hyphens`` option to textwrap
2468 - The mhlib module has been deprecated for removal in Python 3.0.
2470 - The linuxaudiodev module has been deprecated for removal in Python
2473 - The ihooks module has been deprecated for removal in Python 3.0.
2475 - The fpformat module has been deprecated for removal in Python 3.0.
2477 - The dl module has been deprecated for removal in Python 3.0.
2479 - The Canvas module has been deprecated for removal in Python 3.0.
2481 - The compiler package has been deprecated for removal in Python 3.0.
2483 - The Bastion and rexec modules have been deprecated for removal in
2486 - The bsddb185 module has been deprecated for removal in Python 3.0.
2488 - The pure module has been deprecated for removal in Python 3.0.
2490 - Issue #2487: change the semantics of math.ldexp(x, n) when n is too
2491 large to fit in a C long. ldexp(x, n) now returns a zero (with
2492 suitable sign) if n is large and negative; previously, it raised
2495 - The toaiff module has been deprecated for removal in Python 3.0.
2497 - The test.testall module has been deprecated for removal in Python
2500 - The new module has been deprecated for removal in Python 3.0.
2502 - The user module has been deprecated for removal in Python 3.0.
2504 - The stringold module has been deprecated for removal in Python 3.0.
2506 - The mutex module has been deprecated for removal in Python 3.0.
2508 - The imputil module has been deprecated for removal in Python 3.0.
2510 - test.test_support.catch_warning() gained a 'record' argument.
2512 - os.path.walk is deprecated in favor of os.walk.
2514 - pdb gained the "until" command.
2516 - The Mac Modules (including Carbon) have been deprecated for removal
2519 - Library: on MacOS X you can now set ``ARCHFLAGS`` in the shell
2520 environment to control the '-arch' flags that are used to build
2521 an extension. This was added for compatibility with Apple's build
2524 - The bundled OSX-specific copy of libbffi is now in sync with the version
2525 shipped with PyObjC 2.0 and includes support for x86_64 and ppc64 platforms.
2527 - The threading module gained aliases for names that will be removed in the
2533 - The Windows installer now includes Tk 8.5, bzip2 1.0.5, and SQLite 3.5.9.
2535 - Patch #1722225: Support QNX 6.
2537 - ``Lib/lib-old`` is now added to sys.path.
2539 - On MacOS X it is now possible to install the framework in 64-bit
2540 mode or even as a 4-way universal binary (that is, PPC, i386,
2541 PPC64 and x86_64 support in one binary).
2543 This is controlled by the configure argument ``--with-universal-archs``:
2545 - ``--with-universal-archs=all``: install 4-way universal
2547 - ``--with-universal-archs=32-bit``: install 2-way universal, 32-bit (the default)
2549 - ``--with-universal-archs=64-bit``: install 2-way universal, 64-bit
2551 This option should be used in combination with ``--enable-universalsdk=``.
2553 NOTE: 64-bit and 4-way builds are only suppported on Mac OS X 10.5 (or later).
2559 - Add ``PyType_Modified()`` as a public API to clear the type cache.
2561 - The PyBytes functions have been renamed to PyByteArray.
2563 - The PyString functions have been renamed to PyBytes. A batch of
2564 defines were added so that the linker still sees the original
2568 What's New in Python 2.6 alpha 3?
2569 =================================
2571 *Release date: 08-May-2008*
2576 - Issue #2719: backported the ``next()`` builtin from Python 3.
2578 - Issue #2681: The octal literal ``0o8`` was incorrecly acctepted. Now
2579 it properly raises a SyntaxError.
2581 - Issue #2617: Reserved -J and -X arguments for Jython, IronPython and
2582 other implementations of Python.
2584 - Implemented PEP 370: Per user site-packages directory.
2589 - Issue #2670: Fix a failure in urllib2.build_opener(), when passed
2590 two handlers that derive the same default base class.
2592 - Added kill, terminate and send_signal(sig) to subprocess.Popen.
2594 - Added phase(z) -> phi, polar(z) -> r, phi and rect(r, phi) -> z to
2597 - Four new methods were added to the math and cmath modules: acosh,
2598 asinh, atanh and log1p.
2600 - zlib.decompressobj().flush(value) no longer crashes the interpreter
2601 when passed a value less than or equal to zero.
2603 - Issue #1631171: Re-implement the 'warnings' module in C (the
2604 original Python code has been kept as backup). This will allow for
2605 using the 'warning's machinery in such places as the parser where
2606 use of pure Python code is not possible. Both the ``showarning()``
2607 and ``formatwarning()`` gain an optional 'line' argument which is
2608 not called by default for backwards-compatibility reasons. Setting
2609 ``warnings.showwarning()`` to an implementation that lacks support
2610 for the ``line`` argument will raise a DeprecationWarning.
2615 - The audiodev module has been deprecated for removal in Python 3.0.
2617 - Issue #2750: Add the 'json' package. Based on simplejson 1.9 and
2618 contributed by Bob Ippolito.
2620 - Issue #1734346: Support Unicode file names for zipfiles.
2622 - Issue #2581: distutils: Vista UAC/elevation support for
2625 - Issue #2635: Fix bug in 'fix_sentence_endings' textwrap.fill option,
2626 where an extra space was added after a word containing (but not
2627 ending in) '.', '!' or '?'.
2629 - Add from_buffer() and from_buffer_copy() class methods to ctypes
2632 - Issue #2682: ctypes callback functions no longer contain a cyclic
2633 reference to themselves.
2635 - The getpass module has been improved on Unix. It now uses /dev/tty
2636 by default and uses stderr instead of stdout. A GetPassWarning is
2637 issued when input echo cannot be controlled.
2639 - Issue #2014: Allow XML-RPC datetime objects to have dates before
2642 - Issue #2439: Added new function pkgutil.get_data(), which is a
2643 convenience wrapper for the PEP 302 get_data() API.
2645 - Issue #2616: The ctypes.pointer() and ctypes.POINTER() functions are
2646 now implemented in C for better performance.
2648 - Issue #2408: The ``_types`` module, which was used as in
2649 implementation detail of the public ``types`` module, has been
2650 removed and replaced by pure python code.
2652 - Issue #2513: distutils on Windows is now capable of cross-compiling
2653 extension modules between 32 and 64 bit platforms. See the distutls
2654 build documentation for more information.
2656 - Issue #815646: Individual file objects may now be used from multiple
2657 threads at once without fear of crashing the Python interpreter. If
2658 file.close() is called while an object is in use by another thread
2659 an IOError exception will be raised and the file will not be closed.
2661 - The bundled libffi copy is now in sync with the recently released
2662 libffi3.0.5 version, apart from some small changes to
2663 Modules/_ctypes/libffi/configure.ac.
2665 - Issue #2385: distutils.core.run_script() makes __file__ available,
2666 so the controlled environment will more closely mirror the typical
2667 script environment. This supports setup.py scripts that refer to
2673 - Issue #2550: The approach used by client/server code for obtaining
2674 ports to listen on in network-oriented tests has been refined in an
2675 effort to facilitate running multiple instances of the entire
2676 regression test suite in parallel without issue.
2677 test_support.bind_port() has been fixed such that it will always
2678 return a unique port -- which wasn't always the case with the
2679 previous implementation, especially if socket options had been set
2680 that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The
2681 new implementation of bind_port() will actually raise an exception
2682 if it is passed an AF_INET/SOCK_STREAM socket with either the
2683 SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if
2684 available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on
2685 the socket it's been passed. This currently only applies to
2686 Windows. This option prevents any other sockets from binding to the
2687 host/port we've bound to, thus removing the possibility of the
2688 'non-deterministic' behaviour, as Microsoft puts it, that occurs
2689 when a second SOCK_STREAM socket binds and accepts to a host/port
2690 that's already been bound by another socket. The optional preferred
2691 port parameter to bind_port() has been removed. Under no
2692 circumstances should tests be hard coding ports!
2694 test_support.find_unused_port() has also been introduced, which will
2695 pass a temporary socket object to bind_port() in order to obtain an
2696 unused port. The temporary socket object is then closed and
2697 deleted, and the port is returned. This method should only be used
2698 for obtaining an unused port in order to pass to an external program
2699 (i.e. the -accept [port] argument to openssl's s_server mode) or as
2700 a parameter to a server-oriented class that doesn't give you direct
2701 access to the underlying socket used.
2703 Finally, test_support.HOST has been introduced, which should be used
2704 for the host argument of any relevant socket calls (i.e. bind and
2707 The following tests were updated to following the new conventions:
2708 test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib,
2709 test_poplib, test_ftplib, test_telnetlib, test_socketserver,
2710 test_asynchat and test_socket_ssl.
2712 It is now possible for multiple instances of the regression test
2713 suite to run in parallel without issue.
2718 - Issue #1496032: On alpha, use -mieee when gcc is the compiler.
2720 - Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
2721 gcc is used as compiler.
2723 - Issue #2573: On MacOS X it is now possible to install the framework
2724 with a different name using --with-framework-name=NAME.
2729 - Added implementation of copysign, acosh, asinh, atanh and log1p to
2730 the new files Include/pymath.h and Python/pymath.h for platforms
2731 which provide the functions through their libm. The files also
2732 contains several helpers and constants for math.
2734 - Added a new convenience macro, PyErr_WarnPy3k, for issuing Py3k warnings.
2737 What's New in Python 2.6 alpha 2?
2738 =================================
2740 *Release date: 02-Apr-2008*
2745 - Issue #1733757: The interpreter would hang on shutdown if the
2746 tracing function set by sys.settrace is still active and happens to
2747 call threading.currentThread().
2749 - Patch #1442: properly report exceptions when the PYTHONSTARTUP file
2752 - The compilation of a class nested in another class used to leak one
2753 reference on the outer class name.
2755 - Patch #1810: compile() can now compile _ast trees as returned by
2756 ``compile(..., PyCF_ONLY_AST)``.
2758 - Patch #2426: Added sqlite3.Connection.iterdump method to allow easy
2759 dumping of databases. Contributed by Paul Kippes at PyCon 2008.
2761 - Patch #2477: Added from __future__ import unicode_literals.
2763 - Added backport of bytearray type.
2765 - Issue #2355: add Py3k warning for buffer().
2767 - Issue #1477: With narrow Unicode builds, the unicode escape sequence
2768 \Uxxxxxxxx did not accept values outside the Basic Multilingual
2769 Plane. This affected raw unicode literals and the
2770 'raw-unicode-escape' codec. Now UTF-16 surrogates are generated in
2771 this case, like normal unicode literals and the 'unicode-escape'
2774 - Issue #2348: add Py3k warning for file.softspace.
2776 - Issue #2346/#2347: add Py3k warnings for __methods__ and
2779 - Issue #2358: Add a Py3k warning on sys.exc_clear() usage.
2781 - Issue #2400: Allow relative imports to "import *".
2783 - Issue #1745: Backport print function with ``from __future__ import
2786 - Issue #2332: add new attribute names for instance method objects.
2787 The two changes are: im_self -> __self__ and im_func -> __func__
2789 - Issue #2379: Raise a Py3K warning for __getitem__ or __getslice__ on
2790 exception instances.
2792 - Issue #2371: Add a Py3k warning when catching an exception that
2793 doesn't derive from BaseException.
2795 - Issue #2341: Add a Py3k warning when raising an exception that
2796 doesn't derive from BaseException.
2798 - Issue #2321: use pymalloc for unicode object string data to reduce
2799 memory usage in some circumstances.
2801 - PEP 3127: octal literals now start with "0o". Old-style octal
2802 literals are still valid. There are binary literals with a prefix of
2803 "0b". This also affects int(x, 0).
2805 - Issue #2359: Adding deprecation warnings for array.{read,write}.
2807 - Issue #1779871: GNU gcc can now build Python on OS X because the
2808 flags -Wno-long-double, -no-cpp-precomp, and -mno-fused-madd are no
2811 - Add a warning when asserting a non-empty tuple which is always true.
2813 - Issue #2179: speed up with statement execution by storing the exit
2814 method on the stack instead of in a temporary variable (patch by
2817 - Issue #2238: Some syntax errors in *args and **kwargs expressions
2818 could give bogus error messages.
2820 - Issue #2143: Fix embedded readline() hang on SSL socket EOF.
2825 - Patch #2240: Implement signal.setitimer and signal.getitimer.
2830 - Issue #2315: logging.handlers: TimedRotatingFileHandler now accounts
2831 for daylight savings time in calculating the next rollover.
2833 - Issue #2316: logging.handlers: TimedRotatingFileHandler now
2834 calculates rollovers correctly even when nothing is logged for a
2837 - Issue #2317: logging.handlers: TimedRotatingFileHandler now uses
2838 improved logic for removing old files.
2840 - Issue #2495: tokenize.untokenize now inserts a space between two
2841 consecutive string literals; previously, ["" ""] was rendered as
2842 [""""], which is incorrect python code.
2844 - Issue #2248: return the result of the QUIT command. from
2847 - Backport of Python 3.0's io module.
2849 - Issue #2482: Make sure that the coefficient of a Decimal is always
2850 stored as a str instance, not as a unicode instance. This ensures
2851 that str(Decimal) is always an instance of str.
2853 - Issue #2478: fix failure of decimal.Decimal(0).sqrt()
2855 - Issue #2432: give DictReader the dialect and line_num attributes
2856 advertised in the docs.
2858 - Issue #2460: Make Ellipsis object copyable.
2860 - Issue #1681432: Add triangular distribution to the random module
2862 - Issue #2136: urllib2's auth handler now allows single-quoted realms
2863 in the WWW-Authenticate header.
2865 - Issue #2434: Enhanced platform.win32_ver() to also work on Python
2866 installation which do not have the win32all package installed.
2868 - Added support to platform.uname() to also report the machine and
2869 processor information on Windows XP and later. As a result,
2870 platform.machine() and platform.processor() will report this
2871 information as well.
2873 - The library implementing the 2to3 conversion, lib2to3, was added to
2874 the standard distribution.
2876 - Issue #1747858: Fix chown to work with large uid's and gid's on
2879 - Issue #1202: zlib.crc32 and zlib.adler32 no longer return different
2880 values on 32-bit vs. 64-bit python interpreters. Both were correct,
2881 but they now both return a signed integer object for consistency.
2883 - Issue #1158: add %f format (fractions of a second represented as
2884 microseconds) to datetime objects. Understood by both strptime and
2887 - Issue #705836: struct.pack(">f", x) now raises OverflowError on all
2888 platforms when x is too large to fit into an IEEE 754 float;
2889 previously it only raised OverflowError on non IEEE 754 platforms.
2891 - Issues #2166, #1741 and #1531505: now distutils deals with HOME
2892 correctly under win32
2894 - Patch #1858: distutils: added multiple server support in .pypirc
2896 - Issue #1106316: pdb.post_mortem()'s parameter, "traceback", is now
2897 optional: it defaults to the traceback of the exception that is
2898 currently being handled (is mandatory to be in the middle of an
2899 exception, otherwise it raises ValueError).
2901 - Issue #1193577: A .shutdown() method has been added to SocketServers
2902 which terminates the .serve_forever() loop.
2904 - Issue #2220: handle rlcompleter attribute match failure more
2907 - Issue #2225: py_compile, when executed as a script, now returns a
2908 non- zero status code if not all files could be compiled
2911 - Bug #1725737: In distutils' sdist, exclude RCS, CVS etc. also in the
2912 root directory, and also exclude .hg, .git, .bzr, and _darcs.
2914 - Issue #1872: The struct module typecode for _Bool has been changed
2917 - The bundled libffi copy is now in sync with the recently released
2918 libffi3.0.4 version, apart from some small changes to
2919 Modules/_ctypes/libffi/configure.ac. On OS X, preconfigured libffi
2920 files are used. On all linux systems the --with-system-ffi
2921 configure option defaults to "yes".
2923 - Issue #1577: shutil.move() now calls os.rename() if the destination
2924 is a directory instead of copying-then-remove-source.
2929 - test_nis no longer fails when test.test_support.verbose is true and
2930 NIS is not set up on the testing machine.
2932 - Output comparison tests are no longer supported.
2934 - Rewrite test_errno to use unittest and no longer be a no-op.
2936 - GHOP 234: Convert test_extcall to doctest.
2938 - GHOP 290: Convert test_dbm and test_dummy_threading to unittest.
2940 - GHOP 293: Convert test_strftime, test_getargs, and test_pep247 to
2943 - Issue #2055: Convert test_fcntl to unittest.
2945 - Issue 1960: Convert test_gdbm to unittest.
2947 - GHOP 294: Convert test_contains, test_crypt, and test_select to
2950 - GHOP 238: Convert test_tokenize to use doctest.
2952 - GHOP 237: Rewrite test_thread using unittest.
2954 - Patch #2232: os.tmpfile might fail on Windows if the user has no
2955 permission to create files in the root directory.
2960 - A new script 2to3 is now installed, to run the 2.x to 3.x converter.
2962 - Python/memmove.c and Python/strerror.c have been removed; both
2963 functions are in the C89 standard library.
2965 - Patch #2284: Add -x64 option to rt.bat.
2970 - Patch #2477: Added PyParser_ParseFileFlagsEx() and
2971 PyParser_ParseStringFlagsFilenameEx().
2974 What's New in Python 2.6 alpha 1?
2975 =================================
2977 *Release date: 29-Feb-2008*
2982 - Issue #2051: pyc and pyo files are no longer created with permission
2983 644. The mode is now inherited from the py file.
2985 - Issue #2067: file.__exit__() now calls subclasses' close() method.
2987 - Patch #1759: Backport of PEP 3129 class decorators.
2989 - Issue #1881: An internal parser limit has been increased. Also see
2990 issue 215555 for a discussion.
2992 - Added the future_builtins module, which contains hex() and oct().
2993 These are the PEP 3127 version of these functions, designed to be
2994 compatible with the hex() and oct() builtins from Python 3.0. They
2995 differ slightly in their output formats from the existing, unchanged
2996 Python 2.6 builtins. The expected usage of the future_builtins
2998 from future_builtins import hex, oct
3000 - Issue #1600: Modifed PyOS_ascii_formatd to use at most 2 digit
3001 exponents for exponents with absolute value < 100. Follows C99
3002 standard. This is a change on Windows, which would use 3 digits.
3003 Also, added 'n' to the formats that PyOS_ascii_formatd understands,
3004 so that any alterations it does to the resulting string will be
3005 available in stringlib/formatter.h (for float.__format__).
3007 - Implemented PEP 3101, Advanced String Formatting. This adds a new
3008 builtin format(); a format() method for str and unicode; a
3009 __format__() method to object, str, unicode, int, long, float, and
3010 datetime; the class string.Formatter; and the C API
3013 - Fixed several potential crashes, all caused by specially crafted
3014 __del__ methods exploiting objects in temporarily inconsistent
3017 - Issue #2115: Important speedup in setting __slot__ attributes. Also
3018 prevent a possible crash: an Abstract Base Class would try to access
3019 a slot on a registered virtual subclass.
3021 - Fixed repr() and str() of complex numbers with infinity or nan as
3022 real or imaginary part.
3024 - Clear all free lists during a gc.collect() of the highest generation
3025 in order to allow pymalloc to free more arenas. Python may give back
3026 memory to the OS earlier.
3028 - Issue #2045: Fix an infinite recursion triggered when printing a
3029 subclass of collections.defaultdict, if its default_factory is set
3032 - Fixed a minor memory leak in dictobject.c. The content of the free
3033 list was not freed on interpreter shutdown.
3035 - Limit free list of method and builtin function objects to 256
3038 - Patch #1953: Added ``sys._compact_freelists()`` and the C API
3039 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
3040 to compact the internal free lists of pre-allocted ints and floats.
3042 - Issue #1983: Fixed return type of fork(), fork1() and forkpty()
3043 calls. Python expected the return type int but the fork familie
3046 - Issue #1678380: Fix a bug that identifies 0j and -0j when they
3047 appear in the same code unit.
3049 - Issue #2025: Add tuple.count() and tuple.index() methods to comply
3050 with the collections.Sequence API.
3052 - Patch #1970 by Antoine Pitrou: Speedup unicode whitespace and
3055 - Added ``PyType_ClearCache()`` and ``sys._clear_type_cache`` to clear
3056 the internal lookup cache for ref leak tests.
3058 - Patch #1473257: generator objects gain a gi_code attribute. This is
3059 the same object as the func_code attribute of the function that
3060 produced the generator.
3062 - Issue #1920: "while 0" statements were completely removed by the
3063 compiler, even in the presence of an "else" clause, which is
3064 supposed to be run when the condition is false. Now the compiler
3065 correctly emits bytecode for the "else" suite.
3067 - A few crashers fixed: weakref_in_del.py (issue #1377858);
3068 loosing_dict_ref.py (issue #1303614, test67.py);
3069 borrowed_ref_[34].py (not in tracker).
3071 - Issue #1069410: The "can't load dll" message box on Windows is
3072 suppressed while an extension is loaded by calling SetErrorMode in
3073 dynload_win.c. The error is still reported properly.
3075 - Issue #1915: Python compiles with --enable-unicode=no again. However
3076 several extension methods and modules do not work without unicode
3079 - Issue #1882: when compiling code from a string, encoding cookies in the
3080 second line of code were not always recognized correctly.
3082 - Issue #1679: "0x" was taken as a valid integer literal.
3084 - Issue #1865: ``bytes`` as an alias for ``str`` and b"" as an alias "" were
3087 - sys.float_info / PyFloat_GetInfo: The floating point information
3088 object was converted from a dict to a specialized structseq object.
3090 - Patch #1816: Added sys.flags structseq. It exposes the status of
3091 most command line arguments and PYTHON* environment variables.
3093 - Objects/structseq.c: Implemented new structseq representation. The
3094 patch makes structseqs (e.g. the return value of os.stat) more
3097 - Patch #1700288: added a type attribute cache that caches method
3098 accesses, resulting in speedups in heavily object-oriented code.
3100 - Bug #1776: __import__() no longer accepts filenames on any platform.
3101 The first parameter to __import__() must be a valid module name.
3103 - Patch #1668: renamed THREADDEBUG envvar to PYTHONTHREADDEBUG.
3105 - Patch #602345: Add -B command line option, PYTHONDONTWRITEBYTECODE
3106 envvar and sys.dont_write_bytecode attribute. All these can be set
3107 to forbid Python to attempt to write compiled bytecode files.
3109 - Improve some exception messages when Windows fails to load an
3110 extension module. Now we get for example '%1 is not a valid Win32
3111 application' instead of 'error code 193'.
3113 - Bug #1481296: Fixed long(float('nan')) != 0L.
3115 - Issue #1640: Added math.isinf(x), math.isnan(x) and math.copysign(x,
3118 - Issue #1635: Platform independent creation and representation of NaN
3119 and INF. float("nan"), float("inf") and float("-inf") now work on
3120 every platform with IEEE 754 semantics.
3122 - Compiler now generates simpler and faster code for dictionary
3123 literals. The oparg for BUILD_MAP now indicates an estimated
3124 dictionary size. There is a new opcode, STORE_MAP, for adding
3125 entries to the dictionary.
3127 - Issue #1638: %zd configure test fails on Linux.
3129 - Issue #1620: New property decorator syntax was modifying the
3130 decorator in place instead of creating a new decorator object.
3132 - Issue #1538: Avoid copying string in split/rsplit if the split char
3135 - Issue #1553: An erroneous __length_hint__ can make list() raise a
3138 - PEP 366: Allow explicit relative imports when executing modules
3139 inside packages with the -m switch via a new module level
3140 __package__ attribute.
3142 - Issue #1402: Fix a crash on exit, when another thread is still
3143 running, and if the deallocation of its frames somehow calls the
3144 PyGILState_Ensure() / PyGILState_Release() functions.
3146 - Expose the Py_Py3kWarningFlag as sys.py3kwarning.
3148 - Issue #1445: Fix a SystemError when accessing the ``cell_contents``
3149 attribute of an empty cell object.
3151 - Issue #1460: The utf-7 incremental decoder did not accept truncated
3152 input. It now correctly saves its state between chunks of data.
3154 - Patch #1739468: Directories and zipfiles containing a __main__.py
3155 file can now be directly executed by passing their name to the
3156 interpreter. The directory/zipfile is automatically inserted as the
3157 first entry in sys.path.
3159 - Issue #1265: Fix a problem with sys.settrace, if the tracing
3160 function uses a generator expression when at the same time the
3161 executed code is closing a paused generator.
3163 - sets and frozensets now have an isdisjoint() method.
3165 - optimize the performance of builtin.sum().
3167 - Fix warnings found by the new version of the Coverity checker.
3169 - The enumerate() builtin function is no longer bounded to sequences
3170 smaller than LONG_MAX. Formerly, it raised an OverflowError. Now,
3171 automatically shifts from ints to longs.
3173 - Issue #1686386: Tuple's tp_repr did not take into account the
3174 possibility of having a self-referential tuple, which is possible
3175 from C code. Nor did object's tp_str consider that a type's tp_str
3176 could do something that could lead to an inifinite recursion.
3177 Py_ReprEnter() and Py_EnterRecursiveCall(), respectively, fixed the
3180 - Issue #1164: It was possible to trigger deadlock when using the
3181 'print' statement to write to a file since the GIL was not released
3182 as needed. Now PyObject_Print() does the right thing along with
3183 various tp_print implementations of the built-in types and those in
3184 the collections module.
3186 - Issue #1147: Exceptions were directly allowing string exceptions in
3187 their throw() method even though string exceptions no longer
3190 - Issue #1096: Prevent a segfault from getting the repr of a very
3191 deeply nested list by using the recursion counter.
3193 - Issue #1202533: Fix infinite recursion calls triggered by calls to
3194 PyObject_Call() never calling back out to Python code to trigger
3195 recursion depth updates/checks. Required the creation of a static
3196 RuntimeError instance in case normalizing an exception put the
3197 recursion check value past its limit. Fixes crashers
3198 infinite_rec_(1|2|4|5).py.
3200 - Patch #1031213: Decode source line in SyntaxErrors back to its
3201 original source encoding.
3203 - Patch #1673759: add a missing overflow check when formatting floats
3206 - Prevent expandtabs() on string and unicode objects from causing a
3207 segfault when a large width is passed on 32-bit platforms.
3209 - Issue #1733488: Fix compilation of bufferobject.c on AIX.
3211 - Issue #1722485: remove docstrings again when running with -OO.
3213 - Add new attribute names for function objects. All the func_* become
3214 __*__ attributes. (Some already existed, e.g., __doc__ and
3217 - Add -3 option to the interpreter to warn about features that are
3218 deprecated and will be changed/removed in Python 3.0.
3220 - Patch #1686487: you can now pass any mapping after '**' in function
3223 - except clauses may now be spelled either "except E, target:" or
3224 "except E as target:". This is to provide forwards compatibility
3227 - Deprecate BaseException.message as per PEP 352.
3229 - Issue #1303614: don't expose object's __dict__ when the dict is
3230 inherited from a builtin base.
3232 - When __slots__ are set to a unicode string, make it work the same as
3233 setting a plain string, ie don't expand to single letter identifiers.
3235 - Request #1191699: Slices can now be pickled.
3237 - Request #1193128: str.translate() now allows a None argument for
3238 translations that only remove characters without re-mapping the
3239 remaining characters.
3241 - Patch #1682205: a TypeError while unpacking an iterable is no longer
3242 masked by a generic one with the message "unpack non-sequence".
3244 - Remove unused file Python/fmod.c.
3246 - Bug #1683368: The object.__init__() and object.__new__() methods are
3247 now stricter in rejecting excess arguments. The only time when
3248 either allows excess arguments is when it is not overridden and the
3249 other one is. For backwards compatibility, when both are
3250 overridden, it is a deprecation warning (for now; maybe a Py3k
3251 warning later). Also, type.__init__() insists on the same signature
3252 as supported by type.__new__().
3254 - Patch #1675423: PyComplex_AsCComplex() now tries to convert an
3255 object to complex using its __complex__() method before falling back
3256 to the __float__() method. Therefore, the functions in the cmath
3257 module now can operate on objects that define a __complex__()
3260 - Patch #1623563: allow __class__ assignment for classes with
3261 __slots__. The old and the new class are still required to have the
3264 - Patch #1642547: Fix an error/crash when encountering syntax errors
3265 in complex if statements.
3267 - Patch #1462488: Python no longer segfaults when
3268 ``object.__reduce_ex__()`` is called with an object that is faking
3271 - Patch #1680015: Don't modify __slots__ tuple if it contains an
3274 - Patch #1444529: the builtin compile() now accepts keyword arguments.
3276 - Bug #1678647: write a newline after printing an exception in any
3277 case, even when converting the value to a string failed.
3279 - The dir() function has been extended to call the __dir__() method on
3280 its argument, if it exists. If not, it will work like before. This
3281 allows customizing the output of dir() in the presence of a
3284 - Patch #922167: Python no longer segfaults when faced with infinitely
3285 self-recursive reload() calls (as reported by bug #742342).
3287 - Patch #1675981: remove unreachable code from ``type.__new__()``
3290 - Patch #1491866: change the complex() constructor to allow
3291 parthensized forms. This means complex(repr(x)) now works instead of
3292 raising a ValueError.
3294 - Patch #703779: unset __file__ in __main__ after running a file. This
3295 makes the filenames the warning module prints much more sensible
3296 when a PYTHONSTARTUP file is used.
3298 - Variant of patch #697613: don't exit the interpreter on a SystemExit
3299 exception if the -i command line option or PYTHONINSPECT environment
3300 variable is given, but break into the interactive interpreter just
3301 like on other exceptions or normal program exit.
3303 - Patch #1638879: don't accept strings with embedded NUL bytes in
3306 - Bug #1674503: close the file opened by execfile() in an error
3309 - Patch #1674228: when assigning a slice (old-style), check for the
3310 sq_ass_slice instead of the sq_slice slot.
3312 - When printing an unraisable error, don't print exceptions. before
3313 the name. This duplicates the behavior whening normally printing
3316 - Bug #1653736: Properly discard third argument to
3317 slot_nb_inplace_power.
3319 - PEP 352: Raising a string exception now triggers a TypeError.
3320 Attempting to catch a string exception raises DeprecationWarning.
3322 - Bug #1377858: Fix the segfaulting of the interpreter when an object
3323 created a weakref on itself during a __del__ call for new-style
3324 classes (classic classes still have the bug).
3326 - Bug #1579370: Make PyTraceBack_Here use the current thread, not the
3327 frame's thread state.
3329 - patch #1630975: Fix crash when replacing sys.stdout in
3332 - Prevent seg fault on shutdown which could occur if an object raised
3335 - Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, to
3336 avoid relying on atexit.
3338 - Bug #1590891: random.randrange don't return correct value for big
3341 - Patch #1586791: Better exception messages for some operations on
3342 strings, tuples and lists.
3344 - Bug #1067760: Deprecate passing floats to file.seek.
3346 - Bug #1591996: Correctly forward exception in instance_contains().
3348 - Bug #1588287: fix invalid assertion for `1,2` in debug builds.
3350 - Bug #1576657: when setting a KeyError for a tuple key, make sure
3351 that the tuple isn't used as the "exception arguments tuple".
3353 - Bug #1565514: SystemError not raised on too many nested blocks.
3355 - Bug #1576174: WindowsError now displays the windows error code
3356 again, no longer the posix error code.
3358 - Patch #1549049: Support long values in structmember, issue warnings
3359 if the assigned value for structmember fields gets truncated.
3361 - Update the peephole optimizer to remove more dead code (jumps after
3362 returns) and inline unconditional jumps to returns.
3364 - Bug #1545497: when given an explicit base, int() did ignore NULs
3365 embedded in the string to convert.
3367 - Bug #1569998: break inside a try statement (outside a loop) is now
3368 recognized and rejected.
3370 - list.pop(x) accepts any object x following the __index__ protocol.
3372 - A number of places, including integer negation and absolute value,
3373 were fixed to not rely on undefined behaviour of the C compiler
3376 - Bug #1566800: make sure that EnvironmentError can be called with any
3377 number of arguments, as was the case in Python 2.4.
3379 - Patch #1567691: super() and new.instancemethod() now don't accept
3380 keyword arguments any more (previously they accepted them, but
3383 - Fix a bug in the parser's future statement handling that led to
3384 "with" not being recognized as a keyword after, e.g., this
3385 statement: from __future__ import division, with_statement
3387 - Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).
3389 - Fix %zd string formatting on Mac OS X so it prints negative numbers.
3391 - Allow exception instances to be directly sliced again.
3393 - Bug #1551432: Exceptions do not define an explicit __unicode__
3394 method. This allows calling unicode() on exceptions classes
3395 directly to succeed.
3397 - Bug #1542051: Exceptions now correctly call PyObject_GC_UnTrack.
3398 Also make sure that every exception class has __module__ set to
3401 - Bug #1550983: emit better error messages for erroneous relative
3402 imports (if not in package and if beyond toplevel package).
3404 - Overflow checking code in integer division ran afoul of new gcc
3405 optimizations. Changed to be more standard-conforming.
3407 - Patch #1542451: disallow continue anywhere under a finally.
3409 - Patch #1546288: fix seg fault in dict_equal due to ref counting bug.
3411 - The return tuple from str.rpartition(sep) is (tail, sep, head) where
3412 head is the original string if sep was not found.
3414 - Bug #1520864: unpacking singleton tuples in list comprehensions and
3415 generator expressions (x for x, in ... ) works again. Fixing this
3416 problem required changing the .pyc magic number. This means that
3417 .pyc files generated before 2.5c2 will be regenerated.
3419 - ``with`` and ``as`` are now keywords.
3421 - Bug #1664966: Fix crash in exec if Unicode filename can't be
3424 - Issue #1537: Changed GeneratorExit's base class from Exception to
3427 - Issue #1703448: A joined thread could show up in the
3428 threading.enumerate() list after the join() for a brief period until
3435 - Patch #2274: Add heapq.heappushpop().
3437 - Add inspect.isabstract(object) to fix bug #2223
3439 - Add a __format__ method to Decimal, to support PEP 3101.
3441 - Add a timing parameter when using trace.Trace to print out
3444 - Issue #1627: httplib now ignores negative Content-Length headers.
3446 - Issue #900744: If an invalid chunked-encoding header is sent by a
3447 server, httplib will now raise IncompleteRead and close the
3448 connection instead of raising ValueError.
3450 - Issue #1492: The content type of BaseHTTPServer error messages can
3453 - Issue #1781: ConfigParser now does not let you add the "default" section
3456 - Removed uses of dict.has_key() from distutils, and uses of
3457 callable() from copy_reg.py, so the interpreter now starts up
3458 without warnings when '-3' is given. More work like this needs to
3459 be done in the rest of the stdlib.
3461 - Issue #1916: added isgenerator() and isgeneratorfunction() to
3464 - Issue #1224: Fixed bad url parsing when path begins with double
3467 - ctypes instances that are not or do not contain pointers can now be
3470 - Patch #1966: Break infinite loop in httplib when the servers
3471 implements the chunked encoding incorrectly.
3473 - Rename rational.py to fractions.py and the rational.Rational class
3474 to fractions.Fraction, to avoid the name clash with the abstract
3475 base class numbers.Rational. See discussion in issue #1682.
3477 - The pickletools module now provides an optimize() function that
3478 eliminates unused PUT opcodes from a pickle string.
3480 - Patch #2021: Allow tempfile.NamedTemporaryFile and
3481 SpooledTemporaryFile to be used in with statements by correctly
3482 supporting the context management protocol.
3484 - Patch #1979: Add rich comparisons to Decimal, and make Decimal
3485 comparisons involving a NaN follow the IEEE 754 standard.
3487 - Issue #2004: tarfile.py: Use mode 0700 for temporary directories and
3488 default permissions for missing directories.
3490 - Issue #175006: The debugger used to skip the condition of a "while"
3491 statement after the first iteration. Now it correctly steps on the
3492 expression, and breakpoints on the "while" statement are honored on
3495 - Issue #1765140: add an optional delay argument to FileHandler and
3496 its subclasses. Defaults to false (existing behaviour), but if true,
3497 defers opening the file until the first call to emit().
3499 - The pprint module now supports sets and frozensets.
3501 - Issue #1221598: add optional callbacks to ftplib.FTP's storbinary()
3502 and storlines() methods. (Contributed by Phil Schwartz)
3504 - Issue #1715: include sub-extension modules in pydoc's text output.
3506 - Issue #1836: fix an off-by-one bug in TimedRotatingHandler's
3507 rollover time calculation.
3509 - Issue #1021: fix a bug to allow basicConfig to accept NOTSET as a
3512 - Issue #932563: add LoggerAdapter convenience class to make it easier
3513 to add contextual information in logging output.
3515 - Issue #1760556: fix a bug to avoid FileHandler throwing an exception
3518 - Bug #1530959: distutils' build command now uses different build
3519 directory when building extension modules against versions of Python
3520 compiled with ``--with-pydebug``.
3522 - Issue #1555501: move plistlib from plat-mac directory to general
3525 - Issue #1269: fix a bug in pstats.add_callers() and add a unit test
3528 - Issue #1669: don't allow shutil.rmtree() to be called on a symlink
3531 - Issue #1664522: in urllib, don't read non-existing directories in
3532 ftp mode, returning a 0-byte file -- raise an IOError instead.
3534 - Issue #856047: respect the ``no_proxy`` environment variable when
3535 using the ``http_proxy`` etc. environment variables in urllib.
3537 - Issue #1178141: add a getcode() method to the addinfourls that
3538 urllib.open() returns so that you can retrieve the HTTP status code.
3540 - Issue #1003: Fix zipfile decryption check, it would fail zip files
3541 with extended local headers.
3543 - Issue #1189216: Fix the zipfile module to work on archives with
3544 headers past the 2**31 byte boundary.
3546 - Issue #1336: fix a race condition in subprocess.Popen if the garbage
3547 collector kicked in at the wrong time that would cause the process
3548 to hang when the child wrote to stderr.
3550 - Issue #1146: fix how textwrap breaks a long word that would start in
3551 the last column of a line.
3553 - Issue #1693149: trace.py --ignore-module - accept multiple
3554 comma-separated modules to be given.
3556 - Issue #1822: MIMEMultipart.is_multipart() behaves correctly for a
3557 just-created (and empty) instance. Thanks Jonathan Share.
3559 - Issue #1861: Added an attribute to the sched module which returns an
3560 ordered list of upcoming events (displayed as named tuples).
3562 - Issue #1837: The queue module now also supports a LIFO queue and a
3565 - Patch #1048820: Add insert-mode editing to curses.textpad.Textbox
3566 (patch by Stefan Wehr). Also, fix an off-by-one bug in
3569 - Issue #1831: ctypes now raises a TypeError if conflicting positional
3570 and named arguments are passed to a Structure or Union initializer.
3571 When too many positional arguments are passed, also a TypeError is
3572 raised instead of a ValueError.
3574 - Convert the internal ctypes array type cache to a WeakValueDict so
3575 that array types do not live longer than needed.
3577 - Issue #1786: pdb should use its own stdin/stdout around an exec call
3578 and when creating a recursive instance.
3580 - Issue #1698398: ZipFile.printdir() crashed because the format string
3581 expected a tuple type of length six instead of time.struct_time
3584 - Issue #1780: The Decimal constructor now accepts arbitrary leading
3585 and trailing whitespace when constructing from a string.
3586 Context.create_decimal no longer accepts trailing newlines.
3588 - Decimal.as_tuple(), difflib.find_longest_match() and inspect
3589 functions that returned a tuple now return a named tuple.
3591 - Doctest now returns results as a named tuple for readability:
3592 (0, 7) --> TestResults(failed=0, attempted=7)
3594 - Issue #846388:q re.match is interruptible now, which is particularly
3595 good for long regular expression matches.
3597 - Patch #1137: allow setting buffer_size attribute on pyexpat Parser
3598 objects to set the character data buffer size.
3600 - Issue #1757: The hash of a Decimal instance is no longer affected by
3601 the current context.
3603 - Patch #467924: add ZipFile.extract() and ZipFile.extractall() in the
3606 - Issue #1646: Make socket support the TIPC protocol.
3608 - Bug #1742: return os.curdir from os.path.relpath() if both arguments
3609 are equal instead of raising an exception.
3611 - Patch #1637: fix urlparse for URLs like 'http://x.com?arg=/foo'.
3613 - Patch #1698: allow '@' in username parsed by urlparse.py.
3615 - Issue #1735: TarFile.extractall() now correctly sets directory
3616 permissions and times.
3618 - Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a mountpoint.
3620 - Bug #1687: Fxed plistlib.py restricts <integer> to Python int when
3623 - Issue #1700: Regular expression inline flags incorrectly handle
3624 certain unicode characters.
3626 - Issue #1689: PEP 3141, numeric abstract base classes.
3628 - Tk issue #1851526: Return results from Python callbacks to Tcl as
3631 - Issue #1642: Fix segfault in ctypes when trying to delete attributes.
3633 - Issue #1727780: Support loading pickles of random.Random objects
3634 created on 32-bit systems on 64-bit systems, and vice versa. As a
3635 consequence of the change, Random pickles created by Python 2.6
3636 cannot be loaded in Python 2.5.
3638 - Issue #1455: The distutils package now supports VS 2005 and VS 2008
3639 for both the msvccompiler and cygwincompiler.
3641 - Issue #1531: tarfile.py: Read fileobj from the current offset, do
3642 not seek to the start.
3644 - Issue #1534: Added a dictionary sys.float_info with information
3645 about the internal floating point type to the sys module.
3647 - Issue #1429818: patch for trace and doctest modules so they play
3650 - doctest made a bad assumption that a package's __loader__.get_data()
3651 method used universal newlines.
3653 - Issue #1705170: contextlib.contextmanager was still swallowing
3654 StopIteration in some cases. This should no longer happen.
3656 - Issue #1292: On alpha, arm, ppc, and s390 linux systems the
3657 --with-system-ffi configure option defaults to "yes".
3659 - IN module for FreeBSD 8 is added and preexisting FreeBSD 6 and 7
3662 - Issues #1181, #1287: unsetenv() is now called when the
3663 os.environ.pop() and os.environ.clear() methods are used.
3665 - ctypes will now work correctly on 32-bit systems when Python is
3666 configured with --with-system-ffi.
3668 - Patch #1203: ctypes now does work on OS X when Python is built with
3669 --disable-toolbox-glue.
3671 - collections.deque() now supports a "maxlen" argument.
3673 - itertools.count() is no longer bounded to LONG_MAX. Formerly, it
3674 raised an OverflowError. Now, automatically shifts from ints to
3677 - Added itertools.product() which forms the Cartesian product of the
3680 - Added itertools.combinations() and itertools.permutations().
3682 - Patch #1541463: optimize performance of cgi.FieldStorage operations.
3684 - Decimal is fully updated to the latest Decimal Specification
3687 - Bug #1153: repr.repr() now doesn't require set and dictionary items
3688 to be orderable to properly represent them.
3690 - A 'c_longdouble' type was added to the ctypes module.
3692 - Bug #1709599: Run test_1565150 only if the file system is NTFS.
3694 - When encountering a password-protected robots.txt file the
3695 RobotFileParser no longer prompts interactively for a username and
3696 password (bug 813986).
3698 - TarFile.__init__() no longer fails if no name argument is passed and
3699 the fileobj argument has no usable name attribute (e.g. StringIO).
3701 - The functools module now provides 'reduce', for forward
3702 compatibility with Python 3000.
3704 - Server-side SSL support and cert verification added, by Bill
3707 - socket.ssl deprecated; use new ssl module instead.
3709 - uuid creation is now threadsafe.
3711 - EUC-KR codec now handles the cheot-ga-keut composed make-up hangul
3714 - GB18030 codec now can encode additional two-byte characters that are
3717 - Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
3719 - Bug #1704793: Return UTF-16 pair if unicodedata.lookup cannot
3720 represent the result in a single character.
3722 - Bug #978833: Close https sockets by releasing the _ssl object.
3724 - Change location of the package index to pypi.python.org/pypi
3726 - Bug #1701409: Fix a segfault in printing ctypes.c_char_p and
3727 ctypes.c_wchar_p when they point to an invalid location. As a
3728 sideeffect the representation of these instances has changed.
3730 - tarfile.py: Added "exclude" keyword argument to TarFile.add().
3732 - Bug #1734723: Fix repr.Repr() so it doesn't ignore the maxtuple
3735 - The urlopen function of urllib2 now has an optional timeout
3736 parameter (note that it actually works with HTTP, HTTPS, FTP and
3739 - In ftplib, the FTP.ntransfercmd method, when in passive mode, now
3740 uses the socket.create_connection function, using the timeout
3741 specified at connection time.
3743 - Bug #1728403: Fix a bug that CJKCodecs StreamReader hangs when it
3744 reads a file that ends with incomplete sequence and sizehint
3745 argument for .read() is specified.
3747 - Bug #1730389: Change time.strptime() to use ``\s+`` instead of
3748 ``\s*`` when matching spaces in the specified format argument.
3750 - Bugs #1668596/#1720897: distutils now copies data files even if
3751 package_dir is empty.
3753 - sha now raises a DeprecationWarning upon import.
3755 - md5 now raises a DeprecationWarning upon import.
3757 - Issue #1385: The hmac module now computes the correct hmac when
3758 using hashes with a block size other than 64 bytes (such as sha384
3761 - mimify now raises a DeprecationWarning upon import.
3763 - MimeWriter now raises a DeprecationWarning upon import.
3765 - tarfile.py: Improved unicode support. Unicode input names are now
3766 officially supported. Added "errors" argument to the TarFile class.
3768 - urllib.ftpwrapper class now accepts an optional timeout.
3770 - shlex.split() now has an optional "posix" parameter.
3772 - The posixfile module now raises a DeprecationWarning.
3774 - Remove the gopherlib module. This also leads to the removal of
3775 gopher support in urllib/urllib2.
3777 - Fix bug in marshal where bad data would cause a segfault due to lack
3778 of an infinite recursion check.
3780 - Removed plat-freebsd2 and plat-freebsd3 directories (and IN.py in
3783 - HTML-escape the plain traceback in cgitb's HTML output, to prevent
3784 the traceback inadvertently or maliciously closing the comment and
3785 injecting HTML into the error page.
3787 - The popen2 module and os.popen* are deprecated. Use the subprocess
3790 - Added an optional credentials argument to SMTPHandler, for use with
3791 SMTP servers which require authentication.
3793 - Patch #1695948: Added optional timeout parameter to SocketHandler.
3795 - Bug #1652788: Minor fix for currentframe.
3797 - Patch #1598415: Added WatchedFileHandler to better support external
3798 log file rotation using e.g. newsyslog or logrotate. This handler is
3799 only useful in Unix/Linux environments.
3801 - Bug #1706381: Specifying the SWIG option "-c++" in the setup.py file
3802 (as opposed to the command line) will now write file names ending in
3805 - As specified in RFC 2616, an HTTP response like 2xx indicates that
3806 the client's request was successfully received, understood, and
3807 accepted. Now in these cases no error is raised in urllib (issue
3810 - Bug #1290505: time.strptime's internal cache of locale information
3811 is now properly recreated when the locale is changed.
3813 - Patch #1685563: remove (don't add) duplicate paths in
3814 distutils.MSVCCompiler.
3816 - Added a timeout parameter to the constructor of other protocols
3817 (telnetlib, ftplib, smtplib and poplib). This is second part of the
3818 work started with create_connection() and timeout in httplib, and
3819 closes patch #723312.
3821 - Patch #1676823: Added create_connection() to socket.py, which may be
3822 called with a timeout, and use it from httplib (whose HTTPConnection
3823 and HTTPSConnection now accept an optional timeout).
3825 - Bug #978833: Revert r50844, as it broke _socketobject.dup.
3827 - Bug #1675967: re patterns pickled with Python 2.4 and earlier can
3828 now be unpickled with Python 2.5 and newer.
3830 - Patch #1630118: add a SpooledTemporaryFile class to tempfile.py.
3832 - Patch #1273829: os.walk() now has a "followlinks" parameter. If set
3833 to True (which is not the default), it visits symlinks pointing to
3836 - Bug #1681228: the webbrowser module now correctly uses the default
3837 GNOME or KDE browser, depending on whether there is a session of one
3838 of those present. Also, it tries the Windows default browser before
3839 trying Mozilla variants.
3841 - Patch #1339796: add a relpath() function to os.path.
3843 - Patch #1681153: the wave module now closes a file object it opened if
3844 initialization failed.
3846 - Bug #767111: fix long-standing bug in urllib which caused an
3847 AttributeError instead of an IOError when the server's response
3848 didn't contain a valid HTTP status line.
3850 - Patch #957650: "%var%" environment variable references are now
3851 properly expanded in ntpath.expandvars(), also "~user" home
3852 directory references are recognized and handled on Windows.
3854 - Patch #1429539: pdb now correctly initializes the __main__ module
3855 for the debugged script, which means that imports from __main__ work
3858 - The nonobvious commands.getstatus() function is now deprecated.
3860 - Patch #1393667: pdb now has a "run" command which restarts the
3861 debugged Python program, optionally with different arguments.
3863 - Patch #1649190: Adding support for _Bool to ctypes as c_bool.
3865 - Patch #1530482: add pydoc.render_doc() which returns the
3866 documentation for a thing instead of paging it to stdout, which
3869 - Patch #1533909: the timeit module now accepts callables in addition
3870 to strings for the code to time and the setup code. Also added two
3871 convenience functions for instantiating a Timer and calling its
3874 - Patch #1537850: tempfile.NamedTemporaryFile now has a "delete"
3875 parameter which can be set to False to prevent the default
3876 delete-on-close behavior.
3878 - Patch #1581073: add a flag to textwrap that prevents the dropping of
3879 whitespace while wrapping.
3881 - Patch #1603688: ConfigParser.SafeConfigParser now checks values that
3882 are set for invalid interpolation sequences that would lead to
3883 errors on reading back those values.
3885 - Added support for the POSIX.1-2001 (pax) format to
3886 tarfile.py. Extended and cleaned up the test suite. Added a new
3889 - Patch #1449244: Support Unicode strings in
3890 email.message.Message.{set_charset,get_content_charset}.
3892 - Patch #1542681: add entries for "with", "as" and "CONTEXTMANAGERS"
3893 to pydoc's help keywords.
3895 - Patch #1555098: use str.join() instead of repeated string
3896 concatenation in robotparser.
3898 - Patch #1635454: the csv.DictWriter class now includes the offending
3899 field names in its exception message if you try to write a record
3900 with a dictionary containing fields not in the CSV field names list.
3902 - Patch #1668100: urllib2 now correctly raises URLError instead of
3903 OSError if accessing a local file via the file:// protocol fails.
3905 - Patch #1677862: Require a space or tab after import in .pth files.
3907 - Patch #1192590: Fix pdb's "ignore" and "condition" commands so they
3908 trap the IndexError caused by passing in an invalid breakpoint
3911 - Patch #1599845: Add an option to disable the implicit calls to
3912 server_bind() and server_activate() in the constructors for
3913 TCPServer, SimpleXMLRPCServer and DocXMLRPCServer.
3915 - Bug #1531963: Make SocketServer.TCPServer's server_address always be
3916 equal to calling getsockname() on the server's socket. Fixed by
3919 - Patch #742598: Add .timeout attribute to SocketServer that calls
3920 .handle_timeout() when no requests are received.
3922 - Bug #1651235: When a tuple was passed to a ctypes function call,
3923 Python would crash instead of raising an error.
3925 - Bug #1646630: ctypes.string_at(buf, 0) and ctypes.wstring_at(buf, 0)
3926 returned string up to the first NUL character.
3928 - Patch #957003: Implement smtplib.LMTP.
3930 - Patch #1481079: add support for HTTP_REFERER to CGIHTTPServer.
3932 - Patch #1675424: Added tests for uncovered code in the zipfile
3933 module. The KeyError raised by Zipfile.getinfo for nonexistent
3934 names now has a descriptive message.
3936 - Bug #1115886: os.path.splitext('.cshrc') gives now ('.cshrc', '').
3938 - unittest now verifies more of its assumptions. In particular,
3939 TestCase and TestSuite subclasses (not instances) are no longer
3940 accepted in TestSuite.addTest(). This should cause no
3941 incompatibility since it never made sense with ordinary subclasses
3942 -- the failure just occurred later, with a more cumbersome
3945 - Patch #787789: allow to pass custom TestRunner instances to
3946 unittest's main() function.
3948 - Patches #1550273, #1550272: fix a few bugs in unittest and add a
3949 comprehensive test suite for the module.
3951 - Patch #1001604: glob.glob() now returns unicode filenames if it was
3952 given a unicode argument and os.listdir() returns unicode filenames.
3954 - Patch #1673619: setup.py identifies extension modules it doesn't
3955 know how to build and those it knows how to build but that fail to
3958 - Patch #912410: Replace HTML entity references for attribute values
3961 - Patch #1663234: you can now run doctest on test files and modules
3962 using "python -m doctest [-v] filename ...".
3964 - Patch #1121142: Implement ZipFile.open.
3966 - Taught setup.py how to locate Berkeley DB on Macs using MacPorts.
3968 - Added heapq.merge() for merging sorted input streams.
3970 - Added collections.namedtuple() for assigning field names to tuples.
3972 - Added itertools.izip_longest().
3974 - Have the encoding package's search function dynamically import using
3975 absolute import semantics.
3977 - Patch #1647484: Renamed GzipFile's filename attribute to name.
3979 - Patch #1517891: Mode 'a' for ZipFile now creates the file if it
3982 - Patch #698833: Support file decryption in zipfile.
3984 - Patch #685268: Consider a package's __path__ in imputil.
3986 - Patch #1463026: Support default namespace in XMLGenerator.
3988 - Patch #1571379: Make trace's --ignore-dir facility work in the face
3989 of relative directory names.
3991 - Bug #1600860: Search for shared python library in LIBDIR, not
3992 lib/python/config, on "linux" and "gnu" systems.
3994 - Patch #1652681: tarfile.py: create nonexistent files in append mode
3995 and allow appending to empty files.
3997 - Bug #1124861: Automatically create pipes if GetStdHandle fails in
4000 - Patch #1634778: add missing encoding aliases for iso8859_15 and
4003 - Patch #1638243: the compiler package is now able to correctly
4004 compile a with statement; previously, executing code containing a
4005 with statement compiled by the compiler package crashed the
4008 - Bug #1643943: Fix time.strptime's support for the %U directive.
4010 - Patch #1507247: tarfile.py: use current umask for intermediate
4013 - Patch #1627441: close sockets properly in urllib2.
4015 - Bug #494589: make ntpath.expandvars behave according to its
4018 - Changed platform module API python_version_tuple() to actually
4019 return a tuple (it used to return a list).
4021 - Added new platform module APIs python_branch(), python_revision(),
4022 python_implementation() and linux_distribution().
4024 - Added support for IronPython and Jython to the platform module.
4026 - The sets module has been deprecated. Use the built-in set/frozenset
4029 - Bug #1610795: make ctypes.util.find_library work on BSD systems.
4031 - Fixes for 64-bit Windows: In ctypes.wintypes, correct the
4032 definitions of HANDLE, WPARAM, LPARAM data types. Make
4033 parameterless foreign function calls work.
4035 - The version number of the ctypes package changed to "1.1.0".
4037 - Bug #1627575: logging: Added _open() method to FileHandler which can
4038 be used to reopen files. The FileHandler instance now saves the
4039 encoding (which can be None) in an attribute called "encoding".
4041 - Bug #411881: logging.handlers: bare except clause removed from
4042 SMTPHandler.emit. Now, only ImportError is trapped.
4044 - Bug #411881: logging.handlers: bare except clause removed from
4045 SocketHandler.createSocket. Now, only socket.error is trapped.
4047 - Bug #411881: logging: bare except clause removed from
4048 LogRecord.__init__. Now, only ValueError, TypeError and
4049 AttributeError are trapped.
4051 - Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj
4054 - Patch #1182394 from Shane Holloway: speed up HMAC.hexdigest.
4056 - Patch #1262036: Prevent TarFiles from being added to themselves
4057 under certain conditions.
4059 - Patch #1230446: tarfile.py: fix ExFileObject so that read() and
4060 tell() work correctly together with readline().
4062 - Patch #1484695: The tarfile module now raises a HeaderError
4063 exception if a buffer given to frombuf() is invalid.
4065 - Bug #1503765: Fix a problem in logging.config with spaces in comma-
4066 separated lists read from logging config files.
4068 - Patch #1604907: Fix problems in logging.handlers caused at logging
4069 shutdown when syslog handlers fail to initialize because of syslogd
4072 - Patch #1608267: fix a race condition in os.makedirs() if the
4073 directory to be created is already there.
4075 - Patch #1610437: fix a tarfile bug with long filename headers.
4077 - Patch #1371075: Make ConfigParser accept optional dict type for
4078 ordering, sorting, etc.
4080 - Bug #1563807: _ctypes built on AIX fails with ld ffi error.
4082 - Bug #1598620: A ctypes Structure cannot contain itself.
4084 - Patch #1070046: Marshal new-style objects like InstanceType in
4087 - cStringIO.truncate(-1) now raises an IOError, like StringIO and
4090 - Patch #1472877: Fix Tix subwidget name resolution.
4092 - Patch #1594554: Always close a tkSimpleDialog on ok(), even if an
4095 - Patch #1538878: Don't make tkSimpleDialog dialogs transient if the
4096 parent window is withdrawn.
4098 - Bug #1597824: return the registered function from atexit.register()
4099 to facilitate usage as a decorator.
4101 - Patch #1360200: Use unmangled_version RPM spec field to deal with
4104 - Patch #1359217: Process 2xx response in an ftplib transfer that
4105 precedes an 1xx response.
4107 - Patch #1355023: support whence argument for GzipFile.seek.
4109 - Patch #1065257: Support passing open files as body in
4110 HTTPConnection.request().
4112 - Bug #1569790: mailbox.py: Maildir.get_folder() and MH.get_folder()
4113 weren't passing the message factory on to newly created Maildir/MH
4116 - Patch #1514543: mailbox.py: In the Maildir class, report errors if
4117 there's a filename clash instead of possibly losing a message.
4118 (Patch by David Watson.)
4120 - Patch #1514544: Try to ensure that messages/indexes have been
4121 physically written to disk after calling .flush() or
4122 .close(). (Patch by David Watson.)
4124 - Patch #1592250: Add elide argument to Tkinter.Text.search.
4126 - Patch #838546: Make terminal become controlling in pty.fork().
4128 - Patch #1351744: Add askyesnocancel helper for tkMessageBox.
4130 - Patch #1060577: Extract list of RPM files from spec file in
4133 - Bug #1586613: fix zlib and bz2 codecs' incremental en/decoders.
4135 - Patch #1583880: fix tarfile's problems with long names and posix/
4138 - Bug #1586448: the compiler module now emits the same bytecode for
4139 list comprehensions as the builtin compiler, using the LIST_APPEND
4142 - Fix codecs.EncodedFile which did not use file_encoding in 2.5.0, and
4143 fix all codecs file wrappers to work correctly with the "with"
4144 statement (bug #1586513).
4146 - Lib/modulefinder.py now handles absolute and relative imports
4149 - Patch #1567274: Support SMTP over TLS.
4151 - Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that ctypes
4152 isn't considered as requiring executable stacks.
4154 - ctypes callback functions only support 'fundamental' data types as
4155 result type. Raise an error when something else is used. This is a
4156 partial fix for Bug #1574584.
4158 - Fix turtle so that time.sleep is imported for the entire library.
4159 Allows the demo2 function to be executed on its own instead of only
4160 when the module is run as a script.
4162 - Bug #813342: Start the IDLE subprocess with -Qnew if the parent is
4163 started with that option.
4165 - Bug #1565150: Fix subsecond processing for os.utime on Windows.
4167 - Support for MSVC 8 was added to bdist_wininst.
4169 - Bug #1446043: correctly raise a LookupError if an encoding name
4170 given to encodings.search_function() contains a dot.
4172 - Bug #1560617: in pyclbr, return full module name not only for
4173 classes, but also for functions.
4175 - Bug #1457823: cgi.(Sv)FormContentDict's constructor now takes
4176 keep_blank_values and strict_parsing keyword arguments.
4178 - Bug #1566602: correct failure of posixpath unittest when $HOME ends
4181 - Bug #1565661: in webbrowser, split() the command for the default
4182 GNOME browser in case it is a command with args.
4184 - Made the error message for time.strptime when the data and
4185 format do match be more clear.
4187 - Fix a bug in traceback.format_exception_only() that led to an error
4188 being raised when print_exc() was called without an exception set.
4189 In version 2.4, this printed "None", restored that behavior.
4191 - Make webbrowser.BackgroundBrowser usable in Windows (it wasn't
4192 because the close_fds arg to subprocess.Popen is not supported).
4194 - Reverted patch #1504333 to sgmllib because it introduced an infinite
4197 - Patch #1553314: Fix the inspect.py slowdown that was hurting IPython
4198 & SAGE by adding smarter caching in inspect.getmodule()
4200 - Fix missing import of the types module in logging.config.
4202 - Patch #1550886: Fix decimal module context management implementation
4203 to match the localcontext() example from PEP 343.
4205 - Bug #1545341: The 'classifier' keyword argument to the Distutils
4206 setup() function now accepts tuples as well as lists.
4208 - Bug #1541863: uuid.uuid1 failed to generate unique identifiers on
4209 systems with low clock resolution.
4211 - Bug #1531862: Do not close standard file descriptors in subprocess.
4213 - idle: Honor the "Cancel" action in the save dialog (Debian bug
4216 - Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
4217 the first chunk fed to the decoder started with a BOM, but was
4218 longer than 3 bytes.
4220 - The implementation of UnicodeError objects has been simplified
4221 (start and end attributes are now stored directly as Py_ssize_t
4224 - Issue #829951: In the smtplib module, SMTP.starttls() now complies
4225 with RFC 3207 and forgets any knowledge obtained from the server not
4226 obtained from the TLS negotiation itself. Patch contributed by Bill
4229 - Issue #1339: The smtplib.SMTP class has been refactored a bit such
4230 that the SMTP.starttls() caller no longer needs to call ehlo()
4231 beforehand. SMTP.starttls() now raises an exception of the server
4232 does not claim to support starttls. Adds the
4233 SMTP.ehlo_or_helo_if_needed() method. Patch contributed by Bill
4236 - Patch #1089358: Add signal.siginterrupt, a wrapper around
4242 - Patch #1657: added select.epoll and select.kqueue.
4244 - Patch #1506171: added operator.methodcaller().
4246 - Patch #1826: operator.attrgetter() now supports dotted attribute paths.
4248 - Patch #1957: syslogmodule: Release GIL when calling syslog(3).
4250 - Bug #2112: mmap.error is now a subclass of EnvironmentError and not
4251 a direct EnvironmentError.
4253 - Bug #2111: mmap segfaults when trying to write a block opened with
4256 - Bug #2063: correct order of utime and stime in os.times() result on
4259 - Patch #1736: Fix file name handling of _msi.FCICreate.
4261 - Updated ``big5hkscs`` codec to the HKSCS revision of 2004.
4263 - Issue #1940: make it possible to use curses.filter() before
4264 curses.initscr() as the documentation says.
4266 - Backport of _fileio module from Python 3.0.
4268 - Patch #1087741: mmap.mmap is now a class, not a factory function. It
4269 is also subclassable now.
4271 - Patch #1648: added ``sys.getprofile()`` and ``sys.gettrace()``.
4273 - Patch #1663329: added ``os.closerange()`` function to quickly close
4274 a range of file descriptors without considering errors.
4276 - Patch #976880: ``mmap`` objects now have an ``rfind`` method that
4277 works as expected. ``mmap.find`` also takes an optional ``end``
4280 - _winreg's HKEY object has gained __enter__ and __exit__ methods to
4281 support the context manager protocol. The _winreg module also
4282 gained a new function ``ExpandEnvironmentStrings`` to expand
4285 - itertools.starmap() now accepts any iterable input. Previously, it
4286 required the function inputs to be tuples.
4288 - itertools.chain() now has an alternate constructor,
4289 chain.from_iterable().
4291 - Issue #1646: Make socket support TIPC. The socket module now has
4292 support for TIPC under Linux, see http://tipc.sf.net/ for more
4295 - Added interface for Windows' WSAIoctl to socket object and added an
4296 example for a simple network sniffer.
4298 - Bug #1301: Bad assert in _tkinter fixed.
4300 - Added bdist_wininst executable for VS 2008.
4302 - Bug #1604: collections.deque.__init__(iterable) now clears any prior
4303 contents before adding elements from the iterable. This fix brings
4304 the behavior into line with that for list.__init__().
4306 - Added wide char functions to msvcrt module: getwch, getwche, putwch
4307 and ungetwch. The functions accept or return unicode.
4309 - os.access now returns True on Windows for any existing directory.
4311 - Added warnpy3k function to the warnings module.
4313 - Marshal.dumps() now expects exact type matches for int, long, float,
4314 complex, tuple, list, dict, set, and frozenset. Formerly, it would
4315 silently miscode subclasses of those types. Now, it raises a
4318 - Patch #1388440: Add set_completion_display_matches_hook and
4319 get_completion_type to readline.
4321 - Bug #1649098: Avoid declaration of zero-sized array declaration in
4324 - Removed the rgbimg module; been deprecated since Python 2.5.
4326 - Bug #1721309: prevent bsddb module from freeing random memory.
4328 - Bug #1233: fix bsddb.dbshelve.DBShelf append method to work as
4329 intended for RECNO databases.
4331 - pybsddb.sf.net Bug #477182: Load the database flags at database open
4332 time so that opening a database previously created with the DB_DUP
4333 or DB_DUPSORT flag set will keep the proper behavior on subsequent
4334 opens. Specifically: dictionary assignment to a DB object will
4335 replace all values for a given key when the database allows
4336 duplicate values. DB users should use DB.put(k, v) when they want
4337 to store duplicates; not DB[k] = v.
4339 - Add the bsddb.db.DBEnv.lock_id_free method.
4341 - Bug #1686475: Support stat'ing open files on Windows again.
4343 - Patch #1185447: binascii.b2a_qp() now correctly quotes binary
4344 characters with ASCII value less than 32. Also, it correctly quotes
4345 dots only if they occur on a single line, as opposed to the previous
4346 behavior of quoting dots if they are the second character of any
4349 - Bug #1622896: fix a rare corner case where the bz2 module raised an
4350 error in spite of a succesful compression.
4352 - Patch #1654417: make operator.{get,set,del}slice use the full range
4355 - Patch #1646728: datetime.fromtimestamp fails with negative
4356 fractional times. With unittest.
4358 - Patch #1490190: posixmodule now includes os.chflags() and
4359 os.lchflags() functions on platforms where the underlying system
4360 calls are available.
4362 - Patch #1494140: Add documentation for the new struct.Struct object.
4364 - Patch #1432399: Support the HCI protocol for bluetooth sockets
4366 - Patch #1657276: Make NETLINK_DNRTMSG conditional.
4368 - Bug #1653736: Complain about keyword arguments to time.isoformat.
4370 - Bug #1486663: don't reject keyword arguments for subclasses of
4373 - Patch #1610575: The struct module now supports the 't' code, for C99
4376 - Patch #1635058: ensure that htonl and friends never accept or return
4377 negative numbers, per the underlying C implementation.
4379 - Patch #1544279: Improve thread-safety of the socket module by moving
4380 the sock_addr_t storage out of the socket object.
4382 - Patch #1019808: fix bug that causes an incorrect error to be
4383 returned when a socket timeout is set and a connection attempt
4386 - Speed up function calls into the math module.
4388 - Bug #1588217: don't parse "= " as a soft line break in binascii's
4389 a2b_qp() function, instead leave it in the string as quopri.decode()
4392 - Bug #1599782: Fix segfault on bsddb.db.DB().type().
4394 - Bug #1567666: Emulate GetFileAttributesExA for Win95.
4396 - Patch #1576166: Support os.utime for directories on Windows NT+.
4398 - Patch #1572724: fix typo ('=' instead of '==') in _msi.c.
4400 - Bug #1572832: fix a bug in ISO-2022 codecs which may cause segfault
4401 when encoding non-BMP unicode characters.
4403 - Bug #1556784: allow format strings longer than 127 characters in
4404 datetime's strftime function.
4406 - Fix itertools.count(n) to work with negative numbers again.
4408 - RLIMIT_SBSIZE was added to the resource module where available.
4410 - Bug #1551427: fix a wrong NULL pointer check in the win32 version of
4413 - Bug #1548092: fix curses.tparm seg fault on invalid input.
4415 - Patch #1114: fix curses module compilation on 64-bit AIX, & possibly
4416 other 64-bit LP64 platforms where attr_t is not the same size as a
4417 long. (Contributed by Luke Mewburn.)
4419 - Bug #1550714: fix SystemError from itertools.tee on negative value
4422 - Fixed a few bugs on cjkcodecs:
4423 - gbk and gb18030 codec now handle U+30FB KATAKANA MIDDLE DOT
4425 - iso2022_jp_2 codec now encodes into G0 for KS X 1001, GB2312
4426 codepoints to conform the standard.
4427 - iso2022_jp_3 and iso2022_jp_2004 codec can encode JIS X 0213:2
4430 - Bug #1552726: in readline.c, avoid repeatedly polling in interactive
4431 mode by only placing a timeout on the select() if an input hook has
4432 been defined. This prevents an interactive Python from waking up 10
4433 times per second. Patch by Richard Boulton.
4435 - fixed a bug with bsddb.DB.stat: the flags and txn keyword arguments
4438 - Added support for linking the bsddb module against BerkeleyDB 4.5.x,
4441 - Bug #1633621: if curses.resizeterm() or curses.resize_term() is
4442 called, update _curses.LINES, _curses.COLS, curses.LINES and
4445 - Fix an off-by-one bug in locale.strxfrm().
4447 - Fix libffi configure for hppa*-*-linux* | parisc*-*-linux*.
4449 - Build using system ffi library on arm*-linux*.
4451 - Bug #1372: zlibmodule.c: int overflow in PyZlib_decompress
4453 - bsddb module: Fix memory leak when using database cursors on
4454 databases without a DBEnv.
4456 - The sqlite3 module was updated to pysqlite 2.4.1.
4461 - Refactor test_logging to use unittest.
4463 - Refactor test_profile and test_cprofile to use the same code to
4466 - Make test_runpy reentrant by fixing _check_module to clear out any
4467 module being tested. Was causing an error by __import__ doing a
4468 reload on the second run and thus suppressing bytecode recreation.
4470 - Capture socket connection resets and timeouts in test_socket_ssl and
4471 test_urllib2net and raise test.test_support.ResourceDenied.
4473 - Patch #1559413: Fix test_cmd_line if sys.executable contains a
4476 - Added test.test_support.TransientResource which is a context manager
4477 to surround calls to resources that are not guaranteed to work even
4478 if test.test_support.requires says that the resource should exist.
4480 - Added a test for slicing of an exception.
4482 - Added test.test_support.EnvironmentVarGuard. It's a class that
4483 provides a context manager so that one can temporarily set or unset
4484 environment variables.
4486 - Added some tests for modulefinder.
4488 - Converted test_imp to use unittest.
4490 - Fix bsddb test_basics.test06_Transactions to check the version
4493 - test.test_support.catch_warning is a new context manager that can be
4494 used to catch the warnings issued by the warning framework.
4499 - Tools/scripts/reindent.py now creates the backup file using
4500 shutil.copy to preserve user/group and permissions. Added also a
4501 --nobackup option to not create the backup if the user is concerned
4502 regarding this. Check issue 1050828 for more details.
4504 - Tools/scripts/win_add2path.py was added. The simple script modifes
4505 the PATH environment var of the HKCU tree and adds the python bin
4506 and script directory.
4508 - Tools/18n/pygettext.py was added to the list of scripts installed by
4509 Tools/scripts/setup.py (tracker item 642309).
4511 - Added IronPython and Jython support to pybench (part of which was
4514 - Made some minor changes to pybench output to allow the user to see
4515 which Python version is running pybench.
4517 - Added support for the new platform module feature
4518 platform.python_implementation(); this will now be saved in the
4525 - RFE #1765140: Updated documentation on FileHandler and subclasses to
4526 include new optional delay argument.
4528 - Bug #932563: Added section on getting contextual information into
4529 logging output, and added documentation for the new LoggerAdapter
4532 - Bug #1295: Added information about caching of formatted exception
4533 information in the LogRecord by Formatter.format().
4535 - Bug #1637365: add subsection about "__name__ == __main__" to the
4538 - Patch #1698768: updated the "using Python on the Mac" intro.
4540 - Bug #1569057: Document that calling file.next() when the file is
4541 open for writing is undefined.
4543 - Patch #1489771: the syntax rules in Python Reference Manual were
4544 updated to reflect the current Python syntax.
4546 - Patch #1686451: Fix return type for
4547 PySequence_{Count,Index,Fast_GET_SIZE}.
4549 - Patch #1679379: add documentation for fnmatch.translate().
4551 - Bug #1629566: clarify the docs on the return values of parsedate()
4552 and parsedate_tz() in email.utils and rfc822.
4554 - Patch #1671450: add a section about subclassing builtin types to the
4555 "extending and embedding" tutorial.
4557 - Bug #1629125: fix wrong data type (int -> Py_ssize_t) in PyDict_Next
4560 - Bug #1565919: document set types in the Language Reference.
4562 - Bug #1546052: clarify that PyString_FromString(AndSize) copies the
4563 string pointed to by its parameter.
4565 - Bug #1566663: remove obsolete example from datetime docs.
4567 - Bug #1541682: Fix example in the "Refcount details" API docs.
4568 Additionally, remove a faulty example showing PySequence_SetItem
4569 applied to a newly created list object and add notes that this isn't
4576 - Patch #1552024: add decorator support to unparse.py demo script.
4578 - Make auto-generated python.vim file list built-ins and exceptions in
4579 alphatbetical order. Makes output more deterministic and easier to
4580 tell if the file is stale or not.
4582 - Bug #1546372: Fixed small bugglet in pybench that caused a missing
4583 file not to get reported properly.
4589 - Have the search path for building extensions follow the declared
4590 order in $CPPFLAGS and $LDFLAGS when adding directories from those
4591 environment variables.
4593 - Bug #1983: Added a check to pyport to verify that sizeof(pid_t) is
4594 smaller or equal sizeof(long).
4596 - Bug #1234: Fixed semaphore errors on AIX 5.2
4598 - Issue #1726: Remove Python/atof.c from PCBuild/pythoncore.vcproj.
4600 - Removed PCbuild8/ directory and added a new build directory for VS
4601 2005 based on the VS 2008 build directory to PC/VS8.0. The script
4602 PCbuild/vs8to9.py was added to sync changes from PCbuild to
4605 - Moved PCbuild/ directory for VS 2003 to PC/VS7.1 and renamed
4606 PCBuild9/ directory to PCBuild/.
4608 - Bug #1699: Define _BSD_SOURCE only on OpenBSD.
4610 - Bug #1608: use -fwrapv when GCC supports it. This is important,
4611 newer GCC versions may optimize away overflow buffer overflow checks
4612 without this option!
4614 - Patch #1418: Make the AC_REPLACE_FUNCS object files actually work.
4616 - Add a FAST_LOOPS build option that speeds-up looping by trading away
4617 periodic threadstate and signal checking in tight loops. By
4618 default, this option is turned-off. It should only be enabled in
4619 debugged, performance critical applications.
4621 - Patch #786737: Allow building in a tree of symlinks pointing to a
4624 - Bug #1737210: Change Manufacturer of Windows installer to PSF.
4626 - Bug #1746880: Correctly install DLLs into system32 folder on Win64.
4628 - Define _BSD_SOURCE, to get access to POSIX extensions on OpenBSD
4631 - Stop supporting AtheOS and cause a build error in configure for the
4634 - Bug #1655392: don't add -L/usr/lib/pythonX.Y/config to the LDFLAGS
4635 returned by python-config if Python was built with --enable-shared
4636 because that prevented the shared library from being used.
4638 - Patch #1569798: fix a bug in distutils when building Python from a
4639 directory within sys.exec_prefix.
4641 - Bug #1675511: Use -Kpic instead of -xcode=pic32 on Solaris/x86.
4643 - Disable _XOPEN_SOURCE on NetBSD 1.x.
4645 - configure now checks whether gcc supports the PyArg_ParseTuple
4648 - Bug #1578513: Cross compilation was broken by a change to configure.
4649 Repair so that it's back to how it was in 2.4.3.
4651 - Patch #1576954: Update VC6 build directory; remove redundant files
4654 - Bug #1568842: Fix test for uintptr_t.
4656 - Patch #1540470: for OpenBSD 4.0.
4658 - Fix build failure on kfreebsd and on the hurd.
4660 - Fix the build of the library reference in info format.
4662 - Allow Emacs 22 for building the documentation in info format.
4664 - Makefile.pre.in(buildbottest): Run an optional script
4665 pybuildbot.identify to include some information about the build
4672 - Unified naming convention for free lists and their limits. All free
4673 lists in Object/ are named ``free_list``, the counter ``numfree``
4674 and the upper limit is a macro ``PyName_MAXFREELIST`` inside an
4677 - ``PySet_Add()`` can now modify a newly created frozenset. Similarly
4678 to ``PyTuple_SetItem``, it can be used to populate a brand new
4679 frozenset; but it does not steal a reference to the added item.
4681 - Added ``PySet_Check()`` and ``PyFrozenSet_Check()`` to the set API.
4683 - Backport of PyUnicode_FromString(), _FromStringAndSize(), _Format
4684 and _FormatV from Python 3.0. Made PyLong_AsSsize_t and
4685 PyLong_FromSsize_t public functions.
4687 - Patch #1720595: add T_BOOL to the range of structmember types.
4689 - Issue #1534: Added ``PyFloat_GetMax()``, ``PyFloat_GetMin()`` and
4690 ``PyFloat_GetInfo()`` to the float API.
4692 - Issue #1521: On 64bit platforms, using PyArgs_ParseTuple with the t#
4693 of w# format code incorrectly truncated the length to an int, even
4694 when PY_SSIZE_T_CLEAN is set. The str.decode method used to return
4695 incorrect results with huge strings.
4697 - Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
4698 Py_TYPE and Py_REFCNT.
4700 - PEP 3123: Provide forward compatibility with Python 3.0, while
4701 keeping backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size,
4702 and PyVarObject_HEAD_INIT.
4704 - Py_ssize_t fields work in structmember when HAVE_LONG_LONG is not
4707 - Patch #1733960: Allow T_LONGLONG to accept ints.
4709 - T_PYSSIZET can now be used in PyMemberDef lists for Py_ssize_t members.
4711 - Added a new API function ``PyImport_ImportModuleNoBlock``.
4713 - Bug #1637022: Prefix AST symbols with _Py_.
4715 - Fix some leftovers from the conversion from int to Py_ssize_t
4716 (relevant to strings and sequences of more than 2**31 items).
4718 - Make _PyGILState_NoteThreadState() static, it was not used anywhere
4719 outside of pystate.c and should not be necessary.
4721 - ``PyImport_Import`` and ``PyImport_ImportModule`` now always do
4722 absolute imports. In earlier versions they might have used relative
4723 imports under some conditions.
4725 - Added case insensitive comparison methods ``PyOS_stricmp(char*,
4726 char*)`` and ``PyOS_strnicmp(char*, char*, Py_ssize_t)``.
4728 - Bug #1542693: remove semi-colon at end of PyImport_ImportModuleEx
4729 macro so it can be used as an expression.
4735 - Patch #1706: Drop support for Win9x, WinME and NT4. Python now
4736 requires Windows 2000 or greater. The _WINVER and NTDDI_VERSION
4737 macros are set to Win2k for x86/32bit builds and WinXP for AMD64
4740 - Conditionalize definition of _CRT_SECURE_NO_DEPRECATE and
4741 _CRT_NONSTDC_NO_DEPRECATE.
4743 - Bug #1216: Restore support for Visual Studio 2002.
4749 - cfmfile now raises a DeprecationWarning.
4751 - buildtools now raises a DeprecationWarning.
4753 - Removed the macfs module. It had been deprecated since Python 2.5.
4754 This lead to the deprecation of macostools.touched() as it relied
4755 solely on macfs and was a no-op under OS X.
4759 **(For information about older versions, consult the HISTORY file.)**