5 (editors: check NEWS.help for information about editing NEWS using ReST.)
7 What's New in Python 2.7 alpha 1
8 ================================
10 *Release date: XX-XXX-20XX*
15 - Issue #7419: setlocale() could crash the interpreter on Windows when called
18 - Issue #3382: 'F' formatting for float and complex now convert the
19 result to upper case. This only affects 'inf' and 'nan', since 'f'
20 no longer converts to 'g' for large values.
22 - Remove switch from "%f" formatting to "%g" formatting for floats
23 larger than 1e50 in absolute value.
25 - Remove restrictions on precision when formatting floats. E.g.,
26 "%.120g" % 1e-100 used to raise OverflowError, but now gives the
27 requested 120 significant digits instead.
29 - Add Py3k warnings for parameter names in parenthesis.
31 - Issue #7362: Give a proper error message for def f((x)=3): pass.
33 - Issue #7085: Fix crash when importing some extensions in a thread
36 - Issue #7117: repr(x) for a float x returns a result based on the
37 shortest decimal string that's guaranteed to round back to x under
38 correct rounding (with round-half-to-even rounding mode).
39 Previously it gave a string based on rounding x to 17 decimal digits.
40 repr(x) for a complex number behaves similarly. On platforms where
41 the correctly-rounded strtod and dtoa code is not supported (see below),
44 - Issue #7117: On almost all platforms: float-to-string and
45 string-to-float conversions within Python are now correctly rounded.
46 Places these conversions occur include: str for floats and complex
47 numbers; the float and complex constructors; old-style and new-style
48 numeric formatting; serialization and deserialization of floats and
49 complex numbers using marshal, pickle and json; parsing of float and
50 imaginary literals in Python code; Decimal-to-float conversion.
52 The conversions use a Python-adapted version of David Gay's
53 well-known dtoa.c, providing correctly-rounded strtod and dtoa C
54 functions. This code is supported on Windows, and on Unix-like
55 platforms using gcc, icc or suncc as the C compiler. There may be a
56 small number of platforms on which correct operation of this code
57 cannot be guaranteed, so the code is not used: notably, this applies
58 to platforms where the C double format is not IEEE 754 binary64, and
59 to platforms on x86 hardware where the x87 FPU is set to 64-bit
60 precision and Python's configure script is unable to determine how
61 to change the FPU precision. On these platforms conversions use the
62 platform strtod and dtoa, as before.
64 - Issue #7117: Backport round implementation from Python 3.x. round
65 now uses the correctly-rounded string <-> float conversions
66 described above (when available), and so produces correctly rounded
67 results that will display nicely under the float repr. There are
68 two related small changes: (1) round now accepts any class with an
69 __index__ method for its second argument (but no longer accepts
70 floats for the second argument), and (2) an excessively large second
71 integer argument (e.g., round(1.234, 10**100)) no longer raises an
74 - Issue #1757126: Fix the cyrillic-asian alias for the ptcp154 encoding.
76 - Fix several issues with compile(). The input can now contain Windows and Mac
77 newlines and is no longer required to end in a newline.
79 - Remove length limitation when constructing a complex number from a
82 - Issue #7244: itertools.izip_longest() no longer ignores exceptions
83 raised during the formation of an output tuple.
85 - Issue #1087418: Boost performance of bitwise operations for longs.
87 - Issue #1722344: threading._shutdown() is now called in Py_Finalize(), which
88 fixes the problem of some exceptions being thrown at shutdown when the
89 interpreter is killed. Patch by Adam Olsen.
91 - Issue #7168: Document PyFloat_AsString and PyFloat_AsReprString, and
92 note that they are unsafe and deprecated.
94 - Issue #7120: logging: Removed import of multiprocessing which is causing
97 - Issue #7140: The __dict__ of a module should not be cleared unless the module
98 is the only object holding a reference to it.
100 - Issue #1754094: Improve the stack depth calculation in the compiler.
101 There should be no other effect than a small decrease in memory use.
102 Patch by Christopher Tur Lesniewski-Laas.
104 - Issue #7084: Fix a (very unlikely) crash when printing a list from one
105 thread, and mutating it from another one. Patch by Scott Dial.
107 - Issue #1571184: The Unicode database contains properties for more characters.
108 The tables for code points representing numeric values, white spaces or line
109 breaks are now generated from the official Unicode Character Database files,
110 and include information from the Unihan.txt file.
112 - Issue #7050: Fix a SystemError when trying to use unpacking and augmented
115 - Issue #5329: Fix os.popen* regression from 2.5 with commands as a
116 sequence running through the shell. Patch by Jean-Paul Calderone
119 - Issue #7019: Raise ValueError when unmarshalling bad long data, instead
120 of producing internally inconsistent Python longs.
122 - Issue #6990: Fix threading.local subclasses leaving old state around
123 after a reference cycle GC which could be recycled by new locals.
125 - Issue #6300: unicode.encode, unicode.decode, str.decode, and str.encode now
126 take keyword arguments.
128 - Issue #6922: Fix an infinite loop when trying to decode an invalid
129 UTF-32 stream with a non-raising error handler like "replace" or "ignore".
131 - Issue #6713: Improve performance of base 10 int -> string and
132 long -> string conversions.
134 - Issue #1590864: Fix potential deadlock when mixing threads and fork().
136 - Issue #6844: Do not emit DeprecationWarnings when accessing a "message"
137 attribute on exceptions that was set explicitly.
139 - Issue #6846: Fix bug where bytearray.pop() returns negative integers.
141 - classmethod no longer checks if its argument is callable.
143 - Issue #6750: A text file opened with io.open() could duplicate its output
144 when writing from multiple threads at the same time.
146 - Issue #6704: Improve the col_offset in AST for "for" statements with
147 a target of tuple unpacking.
149 - Issue #6707: dir() on an uninitialized module caused a crash.
151 - Issue #6540: Fixed crash for bytearray.translate() with invalid parameters.
153 - Issue #6573: set.union() stopped processing inputs if an instance of self
154 occurred in the argument chain.
156 - Issue #1616979: Added the cp720 (Arabic DOS) encoding.
158 - Issue #6070: On posix platforms import no longer copies the execute bit
159 from the .py file to the .pyc file if it is set. Patch by Marco N.
161 - Issue #4618: When unicode arguments are passed to print(), the default
162 separator and end should be unicode also.
164 - Issue #6119: Fixed a incorrect Py3k warning about order comparisons of builtin
165 functions and methods.
167 - Issue #6347: Include inttypes.h as well as stdint.h in pyport.h.
168 This fixes a build failure on HP-UX: int32_t and uint32_t are
169 defined in inttypes.h instead of stdint.h on that platform.
171 - Issue #4856: Remove checks for win NT.
173 - Issue #2016: Fixed a crash in a corner case where the dictionary of keyword
174 arguments could be modified during the function call setup.
176 - Removed the ipaddr module.
178 - Issue #6329: Fixed iteration for memoryview objects (it was being blocked
179 because it wasn't recognized as a sequence).
181 - Issue #6289: Encoding errors from compile() were being masked.
183 - When no module is given in a relative import, the module field of the
184 ImportFrom AST node is now None instead of an empty string.
186 - Assignment to None using import statements now raises a SyntaxError.
188 - Issue #4547: When debugging a very large function, it was not always
189 possible to update the lineno attribute of the current frame.
191 - Issue #5330: C functions called with keyword arguments were not reported by
192 the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.
194 - Issue #5982: staticmethod and classmethod now expose the wrapped
195 function with __func__.
197 - Added support for multiple context managers in the same with-statement.
198 Deprecated contextlib.nested() which is no longer needed.
200 - Issue #6101: A new opcode, SETUP_WITH, has been added to speed up the with
201 statement and correctly lookup the __enter__ and __exit__ special methods.
203 - Issue #5829: complex("1e500") no longer raises OverflowError. This
204 makes it consistent with float("1e500") and interpretation of real
205 and imaginary literals.
207 - Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
209 - __instancecheck__ and __subclasscheck__ are now completely ignored on classic
210 classes and instances.
212 - Issue #5994: the marshal module now has docstrings.
214 - Issue #5981: Fix three minor inf/nan issues in float.fromhex:
215 (1) inf and nan strings with trailing whitespace were incorrectly
216 rejected; (2) parsing of strings representing infinities and nans
217 was locale aware; and (3) the interpretation of fromhex('-nan')
218 didn't match that of float('-nan').
220 - Issue #5920: For float.__format__, change the behavior with the
221 empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
222 to be like 'g' but with at least one decimal point and with a
223 default precision of 12. Previously, the behavior the same but with
224 a default precision of 6. This more closely matches str(), and
225 reduces surprises when adding alignment flags to the empty
226 presentation type. This also affects the new complex.__format__ in
229 - Issue #5890: in subclasses of 'property' the __doc__ attribute was
230 shadowed by classtype's, even if it was None. property now
231 inserts the __doc__ into the subclass instance __dict__.
233 - Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
234 sequences. Patch by Nick Barnes and Victor Stinner.
236 - Issue #1588: Add complex.__format__. For example,
237 format(complex(1, 2./3), '.5') now produces a sensible result.
239 - Issue #5864: Fix empty format code formatting for floats so that it
240 never gives more than the requested number of significant digits.
242 - Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
243 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
245 - Issue #4971: Fix titlecase for characters that are their own
246 titlecase, but not their own uppercase.
248 - Issue #5835: Deprecate PyOS_ascii_formatd and replace it with
249 _PyOS_double_to_string or PyOS_double_to_string.
251 - Issue #5283: Setting __class__ in __del__ caused a segfault.
253 - Issue #5816: complex(repr(z)) now recovers z exactly, even when
254 z involves nans, infs or negative zeros.
256 - Implement PEP 378, Format Specifier for Thousands Separator, for
257 floats, ints, and longs.
259 - Issue #5515: 'n' formatting for ints, longs, and floats handles
260 leading zero formatting poorly.
262 - Issue #5772: For float.__format__, don't add a trailing ".0" if
263 we're using no type code and we have an exponent.
265 - Issue #3166: Make long -> float (and int -> float) conversions
268 - Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
271 - Issue #1869: fix a couple of minor round() issues. round(5e15+1)
272 was giving 5e15+2; round(-0.0) was losing the sign of the zero.
274 - Issue #5759: float() didn't call __float__ on str subclasses.
276 - Issue #5704: the "-3" command-line option now implies "-t".
278 - Issue #2170: refactored xml.dom.minidom.normalize, increasing both
279 its clarity and its speed.
281 - Issue #2396: the memoryview object was backported from Python 3.1.
283 - Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
284 when hitting the recursion limit under certain circumstances.
286 - Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
288 - Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
289 the end sys.path, for compatibility with the system install of Python.
291 - Issue #4688: Add a heuristic so that tuples and dicts containing only
292 untrackable objects are not tracked by the garbage collector. This can
293 reduce the size of collections and therefore the garbage collection overhead
294 on long-running programs, depending on their particular use of datatypes.
296 - Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
297 improve its performance. Long divisions and remainder operations
298 are now between 50% and 150% faster.
300 - Issue #4258: Make it possible to use base 2**30 instead of base
301 2**15 for the internal representation of integers, for performance
302 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
303 --enable-big-digits option to configure, which overrides the
304 default. Add sys.long_info structseq to provide information about
307 - Issue #4034: Fix weird attribute error messages of the traceback object. (As a
308 result traceback.__members__ no longer exists.)
310 - Issue #4474: PyUnicode_FromWideChar now converts characters outside
311 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
312 and sizeof(Py_UNICODE) == 2.
314 - Issue #5237: Allow auto-numbered fields in str.format(). For
315 example: '{} {}'.format(1, 2) == '1 2'.
317 - Issue #3652: Make the 'line' argument for warnings.showwarning() a
318 requirement. Means the DeprecationWarning from Python 2.6 can go away.
320 - Issue #5247: Improve error message when unknown format codes are
321 used when using str.format() with str, unicode, long, int, and
324 - Running Python with the -3 option now also warns about classic division
327 - Issue #5260: Long integers now consume less memory: average
328 saving is 2 bytes per long on a 32-bit system and 6 bytes per long
331 - Issue #5186: Reduce hash collisions for objects with no __hash__ method by
332 rotating the object pointer by 4 bits to the right.
334 - Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
335 it now forces its argument to double before testing for infinity.
337 - Issue #4978: Passing keyword arguments as unicode strings is now allowed.
339 - Issue #1242657: the __len__() and __length_hint__() calls in several tools
340 were suppressing all exceptions. These include list(), filter(), map(),
341 zip(), and bytearray().
343 - os.ftruncate raises OSErrors instead of IOErrors for consistency with other os
346 - Issue #4991: Passing invalid file descriptors to io.FileIO now raises an
349 - Issue #4807: Port the _winreg module to Windows CE.
351 - Issue #4935: The overflow checking code in the expandtabs() method common
352 to str, bytes and bytearray could be optimized away by the compiler, letting
353 the interpreter segfault instead of raising an error.
355 - Issue #3720: Fix a crash when an iterator modifies its class and removes its
358 - Issue #4893: Use NT threading on CE.
360 - Issue #4915: Port sysmodule to Windows CE.
362 - Issue #4074: Change the criteria for doing a full garbage collection (i.e.
363 collecting the oldest generation) so that allocating lots of objects without
364 destroying them does not show quadratic performance. Based on a proposal by
366 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
368 - Issue #4850: Change COUNT_ALLOCS variables to Py_ssize_t.
370 - Issue #1180193: When importing a module from a .pyc (or .pyo) file with
371 an existing .py counterpart, override the co_filename attributes of all
372 code objects if the original filename is obsolete (which can happen if the
373 file has been renamed, moved, or if it is accessed through different paths).
374 Patch by Ziga Seilnacht and Jean-Paul Calderone.
376 - Issue #4075: Use OutputDebugStringW in Py_FatalError.
378 - Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
379 file with `str' filename on Windows.
381 - Issue #3680: Reference cycles created through a dict, set or deque iterator
382 did not get collected.
384 - Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
385 where the tp_hash and tp_dict slots are both NULL.
387 - Issue #4764: With io.open, IOError.filename is set when trying to open a
388 directory on POSIX systems.
390 - Issue #4764: IOError.filename is set when trying to open a directory on POSIX
393 - Issue #4759: None is now allowed as the first argument of
394 bytearray.translate(). It was always allowed for bytes.translate().
396 - Added test case to ensure attempts to read from a file opened for writing
399 - Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
400 print elapsed times, not only when some objects are uncollectable /
401 unreachable. Original patch by Neil Schemenauer.
403 - Issue #3439: Add a bit_length method to int and long.
405 - Issue #2183: Simplify and optimize bytecode for list comprehensions.
406 Original patch by Neal Norwitz.
408 - Issue #4597: Fixed exception handling when the __exit__ function of a
409 context manager returns a value that cannot be converted to a bool.
411 - Issue #4597: Fixed several opcodes that weren't always propagating
414 - Issue #4445: Replace "sizeof(PyStringObject)" with
415 "offsetof(PyStringObject, ob_sval) + 1" when allocating memory for
416 str instances. On a typical machine this saves 3 bytes of memory
417 (on average) per string allocation.
419 - Issue #3996: On Windows, the PyOS_CheckStack function would cause the
420 interpreter to abort ("Fatal Python error: Could not reset the stack!")
421 instead of throwing a MemoryError.
423 - Issue #3689: The list reversed iterator now supports __length_hint__
424 instead of __len__. Behavior now matches other reversed iterators.
426 - Issue #4367: Python would segfault during compiling when the unicodedata
427 module couldn't be imported and \N escapes were present.
429 - Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
430 method on file objects with closefd=False. The file descriptor is still
431 kept open but the file object behaves like a closed file. The ``FileIO``
432 object also got a new readonly attribute ``closefd``.
434 - Issue #4348: Some bytearray methods returned that didn't cause any change to
435 the bytearray, returned the same bytearray instead of a copy.
437 - Issue #4317: Fixed a crash in the imageop.rgb2rgb8() function.
439 - Issue #4230: If ``__getattr__`` is a descriptor, it now functions correctly.
441 - Issue #4048: The parser module now correctly validates relative imports.
443 - Issue #4225: ``from __future__ import unicode_literals`` didn't work in an
446 - Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
447 method does not return iterators for the 4th and 5th items.
449 - Issue #4209: Enabling unicode_literals and the print_function in the same
450 __future__ import didn't work.
452 - Using ``nonlocal`` as a variable name will now raise a Py3k SyntaxWarning
453 because it is a reserved word in 3.x.
455 - On windows, os.chdir given unicode was not working if GetCurrentDirectoryW
456 returned a path longer than MAX_PATH. (But It's doubtful this code path is
457 really executed because I cannot move to such directory on win2k)
459 - Issue #4069: When set.remove(element) is used with a set element, the element
460 is temporarily replaced with an equivalent frozenset. But the eventual
461 KeyError would always report the empty frozenset([]) as the missing key. Now
462 it correctly refers to the initial element.
464 - Issue #4509: Various issues surrounding resize of bytearray objects to
465 which there are buffer exports.
467 - Issue #4748: Lambda generators no longer return a value.
469 - Issue #3582: Use native TLS functions on Windows
471 - The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
473 - Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
476 - Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
477 to avoid compiler warnings.
479 - Issue #5705: os.setuid() would not accept values > 2**31-1 but pwd.getpwnam()
480 returned them on 64bit platforms.
482 - Issue #5108: Handle %s like %S and %R in PyUnicode_FromFormatV(): Call
483 PyUnicode_DecodeUTF8() once, remember the result and output it in a second
484 step. This avoids problems with counting UTF-8 bytes that ignores the effect
485 of using the replace error handler in PyUnicode_DecodeUTF8().
487 - Issue #3739: The unicode-internal encoder now reports the number of characters
488 consumed like any other encoder (instead of the number of bytes).
493 - Issue #7408: Fixed distutils.tests.sdist so it doesn't check for group
494 ownership when the group is not forced, because the group may be different
495 from the user's group and inherit from its container when the test is run.
497 - Issue #1515: Enable use of deepcopy() with instance methods. Patch by
500 - Issue #7403: logging: Fixed possible race condition in lock creation.
502 - Issue #6845: Add restart support for binary upload in ftplib. The
503 `storbinary()` method of FTP and FTP_TLS objects gains an optional `rest`
504 argument. Patch by Pablo Mouzo.
506 - Issue #5788: `datetime.timedelta` objects get a new `total_seconds()`
507 method returning the total number of seconds in the duration. Patch by
510 - Issue #6615: logging: Used weakrefs in internal handler list.
512 - Issue #1488943: difflib.Differ() doesn't always add hints for tab characters
514 - Issue #6123: tarfile now opens empty archives correctly and consistently
515 raises ReadError on empty files.
517 - Issue #7354: distutils.tests.test_msvc9compiler - dragfullwindows can
520 - Issue #5037: Proxy the __unicode__ special method instead to __unicode__
523 - Issue #7341: Close the internal file object in the TarFile constructor in
526 - Issue #7293: distutils.test_msvc9compiler is fixed to work on any fresh
527 Windows box. Help provided by David Bolen.
529 - Issue #7328: pydoc no longer corrupts sys.path when run with the '-m' switch
531 - Issue #2054: ftplib now provides an FTP_TLS class to do secure FTP using
532 TLS or SSL. Patch by Giampaolo Rodola'.
534 - Issue #4969: The mimetypes module now reads the MIME database from
535 the registry under Windows. Patch by Gabriel Genellina.
537 - Issue #6816: runpy now provides a run_path function that allows Python code
538 to execute file paths that refer to source or compiled Python files as well
539 as zipfiles, directories and other valid sys.path entries that contain a
540 __main__.py file. This allows applications that run other Python scripts to
541 support the same flexibility as the CPython command line itself.
543 - Issue #7318: multiprocessing now uses a timeout when it fails to establish
544 a connection with another process, rather than looping endlessly. The
545 default timeout is 20 seconds, which should be amply sufficient for
548 - Issue #7197: Allow unittest.TextTestRunner objects to be pickled and
549 unpickled. This fixes crashes under Windows when trying to run
550 test_multiprocessing in verbose mode.
552 - Issue #7282: Fix a memory leak when an RLock was used in a thread other
553 than those started through `threading.Thread` (for example, using
554 `thread.start_new_thread()`.
556 - Issue #7264: Fix a possible deadlock when deallocating thread-local objects
557 which are part of a reference cycle.
559 - Issue #7211: Allow 64-bit values for the `ident` and `data` fields of kevent
560 objects on 64-bit systems. Patch by Michael Broghton.
562 - Issue #6896: mailbox.Maildir now invalidates its internal cache each time
563 a modification is done through it. This fixes inconsistencies and test
564 failures on systems with slightly bogus mtime behaviour.
566 - Issue #7246 & Issue #7208: getpass now properly flushes input before
567 reading from stdin so that existing input does not confuse it and
568 lead to incorrect entry or an IOError. It also properly flushes it
569 afterwards to avoid the terminal echoing the input afterwards on
570 OSes such as Solaris.
572 - Issue #7233: Fix a number of two-argument Decimal methods to make
573 sure that they accept an int or long as the second argument. Also
574 fix buggy handling of large arguments (those with coefficient longer
575 than the current precision) in shift and rotate.
577 - Issue #4750: Store the basename of the original filename in the gzip FNAME
578 header as required by RFC 1952.
580 - Issue #1180: Added a new global option to ignore ~/.pydistutils.cfg in
583 - Issue #7218: Fix test_site for win32, the directory comparison was done with
586 - Issue #7205: Fix a possible deadlock when using a BZ2File object from
587 several threads at once.
589 - Issue #7071: byte-compilation in Distutils is now done with respect to
590 sys.dont_write_bytecode.
592 - Issue #7066: archive_util.make_archive now restores the cwd if an error is
593 raised. Initial patch by Ezio Melotti.
595 - Issue #6218: io.StringIO and io.BytesIO instances are now picklable with
598 - Issue #7077: logging: SysLogHandler now treats Unicode as per RFC 5424.
600 - Issue #7099: Decimal.is_normal now returns True for numbers with exponent
603 - Issue #5833: Fix extra space character in readline completion with the
604 GNU readline library version 6.0.
606 - Issue #7133: SSL objects now support the new buffer API.
608 - Issue #7149: urllib fails on OSX in the proxy detection code
610 - Issue #7069: Make inspect.isabstract() return a boolean.
612 - Add support to the `ihooks` module for relative imports.
614 - Issue #6894: Fixed the issue urllib2 doesn't respect "no_proxy" environment
616 - Issue #7086: Added TCP support to SysLogHandler, and tidied up some
617 anachronisms in the code which were a relic of 1.5.2 compatibility.
619 - Issue #7082: When falling back to the MIME 'name' parameter, the
620 correct place to look for it is the Content-Type header.
622 - Issue #7048: Force Decimal.logb to round its result when that result
623 is too large to fit in the current precision.
625 - Issue #6516: Added owner/group support when creating tar archives in
628 - Issue #7031: Add TestCase.assert(Not)IsInstance() methods.
630 - Issue #6790: Make it possible again to pass an `array.array` to
631 `httplib.HTTPConnection.send`. Patch by Kirk McDonald.
633 - Issue #6236, #6348: Fix various failures in the `io` module under AIX
634 and other platforms, when using a non-gcc compiler. Patch by egreen.
636 - Issue #6954: Fixed crash when using DISTUTILS_DEBUG flag in Distutils.
638 - Issue #6851: Fix urllib.urlopen crash on secondairy threads on OSX 10.6
640 - Issue #4606: Passing 'None' if ctypes argtype is set to POINTER(...)
641 does now always result in NULL.
643 - Issue #5042: ctypes Structure sub-subclass does now initialize
644 correctly with base class positional arguments.
646 - Issue #6938: Fix a TypeError in string formatting of a multiprocessing
649 - Issue #6635: Fix profiler printing usage message.
651 - Issue #6856: Add a filter keyword argument to TarFile.add().
653 - Issue #6163: Fixed HP-UX runtime library dir options in
654 distutils.unixcompiler. Initial patch by Sridhar Ratnakumar and
655 Michael Haubenwallner.
657 - Issue #6857: Default format() alignment should be '>' for Decimal
660 - Issue #6795: int(Decimal('nan')) now raises ValueError instead of
661 returning NaN or raising InvalidContext. Also, fix infinite recursion
662 in long(Decimal('nan')).
664 - Issue #6850: Fix bug in Decimal._parse_format_specifier for formats
665 with no type specifier.
667 - Issue #4937: plat-mac/bundlebuilder revers to non-existing version.plist
669 - Issue #6838: Use a list to accumulate the value instead of
670 repeatedly concatenating strings in httplib's
671 HTTPResponse._read_chunked providing a significant speed increase
672 when downloading large files servend with a Transfer-Encoding of 'chunked'.
674 - Issue #5275: In Cookie's Cookie.load(), properly handle non-string arguments
677 - Issue #2666: Handle BROWSER environment variable properly for unknown browser
678 names in the webbrowser module.
680 - Issue #6054: Do not normalize stored pathnames in tarfile.
682 - Issue #6794: Fix Decimal.compare_total and Decimal.compare_total_mag: NaN
683 payloads are now ordered by integer value rather than lexicographically.
685 - Issue #6693: New functions in site.py to get user/global site packages paths.
687 - The thread.lock type now supports weak references.
689 - Issue #1356969: Add missing info methods in Tix.HList.
691 - Issue #1522587: New constants and methods for the Tix.Grid widget.
693 - Issue #1250469: Fix the return value of Tix.PanedWindow.panes.
695 - Issue #1119673: Do not override Tkinter.Text methods when creating a
698 - Issue #6665: Fix fnmatch to properly match filenames with newlines in them.
700 - Issue #1135: Add the XView and YView mix-ins to avoid duplicating
701 the xview* and yview* methods.
703 - Issue #6629: Fix a data corruption issue in the new `io` package, which could
704 occur when writing to a BufferedRandom object (e.g. a file opened in "rb+" or
705 "wb+" mode) after having buffered a certain amount of data for reading. This
706 bug was not present in the pure Python implementation.
708 - Issue #4660: If a multiprocessing.JoinableQueue.put() was preempted, it was
709 possible to get a spurious 'task_done() called too many times' error.
711 - Issue #1628205: Socket file objects returned by socket.socket.makefile() now
712 properly handles EINTR within the read, readline, write & flush methods.
713 The socket.sendall() method now properly handles interrupted system calls.
715 - Issue #6595: The Decimal constructor now allows arbitrary Unicode
716 decimal digits in input, as recommended by the standard. Previously
717 it was restricted to accepting [0-9].
719 - Issue #6511: ZipFile now raises BadZipfile (instead of an IOError) when
720 opening an empty or very small file.
722 - Issue #6553: Fixed a crash in cPickle.load(), when given a file-like object
723 containing incomplete data.
725 - Issue #6545: Removed assert statements in distutils.Extension, so the
726 behavior is similar when used with -O.
728 - unittest has been split up into a package. All old names should still work.
730 - Issue #6431: Make Fraction type return NotImplemented when it doesn't
731 know how to handle a comparison without loss of precision. Also add
732 correct handling of infinities and nans for comparisons with float.
734 - Issue #6415: Fixed warnings.warn segfault on bad formatted string.
736 - Issue #6466: now distutils.cygwinccompiler and distutils.emxccompiler
737 uses the same refactored function to get gcc/ld/dllwrap versions numbers.
738 It's `distutils.util.get_compiler_versions`. Added deprecation warnings
739 for the obsolete get_versions() functions.
741 - Issue #6433: fixed issues with multiprocessing.pool.map hanging on empty list
743 - Issue #6314: logging: Extra checks on the "level" argument in more places.
745 - Issue #2622: Fixed an ImportError when importing email.messsage from a
746 standalone application built with py2exe or py2app.
748 - Issue #6455: Fixed test_build_ext under win32.
750 - Issue #6377: Enabled the compiler option, and deprecate its usage as an
753 - Issue #6413: Fixed the log level in distutils.dist for announce.
755 - Issue #3392: The subprocess communicate() method no longer fails in select()
756 when file descriptors are large; communicate() now uses poll() when possible.
758 - Issue #6403: Fixed package path usage in build_ext.
760 - Issues #5155, 5313, 5331: multiprocessing.Process._bootstrap was
761 unconditionally calling "os.close(sys.stdin.fileno())" resulting in file
764 - Issue #6365: Distutils build_ext inplace mode was copying the compiled
765 extension in a subdirectory if the extension name had dots.
767 - Issue #6344: Fixed a crash of mmap.read() when passed a negative argument.
769 - Issue #5230: pydoc would report no documentation found if a module generated
770 a 'not found' import error when loaded; it now reports the import errors.
771 Thanks to Lucas Prado Melo for initial fix and collaboration on the tests.
773 - Issue #6314: logging.basicConfig() performs extra checks on the "level"
776 - Issue #6164: Added an AIX specific linker argument in Distutils
777 unixcompiler. Original patch by Sridhar Ratnakumar.
779 - Issue #6274: Fixed possible file descriptors leak in subprocess.py
781 - Issue #6189: Restored compatibility of subprocess.py with Python 2.2.
783 - Issue #6287: Added the license field in Distutils documentation.
785 - Issue #6286: Now Distutils upload command is based on urllib2 instead of
786 httplib, allowing the usage of http_proxy.
788 - Issue #6271: mmap tried to close invalid file handle (-1) when annonymous.
791 - Issue #6215: All bug fixes and enhancements from the Python 3.1 io library
792 (including the fast C implementation) have been backported to the standard
795 - Issue #6258: Support AMD64 in bdist_msi.
797 - Issue #5262: Fixed bug in next rollover time computation in
798 TimedRotatingFileHandler.
800 - Issue #6263: Fixed syntax error in distutils.cygwincompiler.
802 - Issue #5201: distutils.sysconfig.parse_makefile() now understands `$$`
803 in Makefiles. This prevents compile errors when using syntax like:
804 `LDFLAGS='-rpath=\$$LIB:/some/other/path'`. Patch by Floris Bruynooghe.
806 - Issue #5767: Removed sgmlop support from xmlrpclib.
808 - Issue #6131: test_modulefinder leaked when run after test_distutils.
809 Patch by Hirokazu Yamamoto.
811 - Issue #6048: Now Distutils uses the tarfile module in archive_util.
813 - Issue #5150: IDLE's format menu now has an option to strip trailing
816 - Issue #6121: pydoc now ignores leading and trailing spaces in the
817 argument to the 'help' function.
819 - In unittest, using a skipping decorator on a class is now equivalent to
820 skipping every test on the class. The ClassTestSuite class has been removed.
822 - Issue #6050: Don't fail extracting a directory from a zipfile if
823 the directory already exists.
825 - Issue #5311: bdist_msi can now build packages that do not depend on a
826 specific Python version.
828 - Issue #1309352: fcntl now converts its third arguments to a C `long` rather
829 than an int, which makes some operations possible under 64-bit Linux (e.g.
830 DN_MULTISHOT with F_NOTIFY).
832 - Issue #1424152: Fix for httplib, urllib2 to support SSL while working through
833 proxy. Original patch by Christopher Li, changes made by Senthil Kumaran.
835 - Issue #1983: Fix functions taking or returning a process identifier to use
836 the dedicated C type ``pid_t`` instead of a C ``int``. Some platforms have
837 a process identifier type wider than the standard C integer type.
839 - Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket.
840 Patch by Farhan Ahmad, test by Marcin Bachry.
842 - Issue #6062: In distutils, fixed the package option of build_ext. Feedback
843 and tests on pywin32 by Tim Golden.
845 - Issue #6053: Fixed distutils tests on win32. patch by Hirokazu Yamamoto.
847 - Issue #6046: Fixed the library extension when distutils build_ext is used
848 inplace. Initial patch by Roumen Petrov.
850 - Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
853 - Issue #2116: Weak references and weak dictionaries now support copy()ing and
856 - Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
858 - Issue #5918: Fix a crash in the parser module.
860 - Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
862 - Issue #6022: a test file was created in the current working directory by
863 test_get_outputs in Distutils.
865 - Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
866 file is a binary. Patch by Brodie Rao, tests by Daniel Diniz.
868 - Issue #5977: distutils build_ext.get_outputs was not taking into account the
869 inplace option. Initial patch by kxroberto.
871 - Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
872 for old-style extensions.
874 - Issue #5971: StreamHandler.handleError now swallows IOErrors which occur when
875 trying to print a traceback.
877 - Issue #5976: Fixed Distutils test_check_environ.
879 - Issue #5900: Ensure RUNPATH is added to extension modules with RPATH if GNU
880 ld is used. Original patch by Floris Bruynooghe.
882 - Issue #5941: Distutils build_clib command was not working anymore because
883 of an incomplete costumization of the archiver command. Added ARFLAGS in the
884 Makefile besides AR and make Distutils use it. Original patch by David
887 - Issue 5955: aifc's close method did not close the file it wrapped,
888 now it does. This also means getfp method now returns the real fp.
890 - Issue #4875: On win32, ctypes.util.find_library does no longer
893 - Issue #5142: Add the ability to skip modules while stepping to pdb.
895 - Issue #1309567: Fix linecache behavior of stripping subdirectories when
896 looking for files given by a relative filename.
898 - Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
899 extracting a file to the root directory.
901 - Issue #5913: os.listdir() should fail for empty path on windows.
903 - Issue #5084: unpickling now interns the attribute names of pickled objects,
904 saving memory and avoiding growth in size of subsequent pickles. Proposal
905 and original patch by Jake McGuire.
907 - Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
908 error when a named pipe is encountered, rather than blocking infinitely.
910 - Issue #3959: The ipaddr module has been added to the standard library.
911 Contributed by Google.
913 - Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
915 - Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
918 - Issue #4305: ctypes should now build again on mipsel-linux-gnu
920 - Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
921 string is already in normalized form, by performing a quick check beforehand.
922 Original patch by Rauli Ruohonen.
924 - Issue #5853: calling a function of the mimetypes module from several threads
925 at once could hit the recursion limit if the mimetypes database hadn't been
928 - Issue #5854: Updated __all__ to include some missing names and remove some
929 names which should not be exported.
931 - Issue #5810: Fixed Distutils test_build_scripts so it uses
932 sysconfig.get_config_vars.
934 - Issue #4951: Fixed failure in test_httpservers.
936 - Issue #3102: All global symbols that the _ctypes extension defines
937 are now prefixed with 'Py' or '_ctypes'.
939 - Issue #5041: ctypes does now allow pickling wide character.
941 - Issue #5812: For the two-argument form of the Fraction constructor,
942 Fraction(m, n), m and n are permitted to be arbitrary Rational
945 - Issue #5812: Fraction('1e6') is valid: more generally, any string
946 that's valid for float() is now valid for Fraction(), with the
947 exception of strings representing NaNs and infinities.
949 - Issue #5795: Fixed test_distutils failure on Debian ppc.
951 - Issue #5768: Fixed bug in Unicode output logic and test case for same.
953 - Issue #1161031: fix readwrite select flag handling: POLLPRI now
954 results in a handle_expt_event call, not handle_read_event, and POLLERR
955 and POLLNVAL now call handle_close, not handle_expt_event. Also,
956 dispatcher now has an 'ignore_log_types' attribute for suppressing
957 log messages, which is set to 'warning' by default.
959 - Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
961 - Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
962 a value in SafeConfigParser.
964 - Issue #5732: added a new command in Distutils: check.
966 - Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
967 platforms. Initial patch by Paul Moore.
969 - Issue #2254: Fix CGIHTTPServer information disclosure. Relative paths are
970 now collapsed within the url properly before looking in cgi_directories.
972 - Issue #5095: Added bdist_msi to the list of bdist supported formats.
973 Initial fix by Steven Bethard.
975 - Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
976 Initial fix by Wayne Davison.
978 - Issue #5693: TestSuite.__iter__ can now be consistently overridden in subclasses.
980 - Issue #5694: removed spurious test output in Distutils (test_clean).
982 - Issue #5471: Fix os.path.expanduser() for $HOME set to '/'.
984 - Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
986 - Issue #1726172: fix IndexError in the case of and empty response in ftplib.
988 - Issue #2625: added missing iteritems() call to the for loop in
989 mailbox.MH.get_message().
991 - Issue #5585: Add the ability to call an initializer to mulitiprocessing.manager
992 so that users can install custom handlers/etc.
994 - Issue #3551: Patch multiprocessing to raise a proper exception if the size of the
995 object when writefile is called causes a ERROR_NO_SYSTEM_RESOURCES. Added docs
996 to note the limitation
998 - unittest.assertNotEqual() now uses the inequality operator (!=) instead
999 of the equality operator.
1001 - Issue #6001: Test discovery for unittest. Implemented in
1002 unittest.TestLoader.discover and from the command line.
1004 - Issue #5679: The methods unittest.TestCase.addCleanup and doCleanups were added.
1005 addCleanup allows you to add cleanup functions that will be called
1006 unconditionally (after setUp if setUp fails, otherwise after tearDown). This
1007 allows for much simpler resource allocation and deallocation during tests.
1009 - Issue #3379: unittest.main now takes an optional exit argument. If False main
1010 doesn't call sys.exit allowing it to be used from the interactive interpreter.
1012 - Issue #5995: unittest.main now takes an optional verbosity argument allowing
1013 test modules to be run with a higher than default verbosity.
1015 - Issue #5995: A fix to allow you to run "python -m unittest test_module" or
1016 "python -m unittest test_module.TestClass" from the command line.
1018 - Issue #5728: unittest.TestResult has new startTestRun and stopTestRun methods;
1019 called immediately before and after a test run.
1021 - Issue #5663: better failure messages for unittest asserts. Default assertTrue
1022 and assertFalse messages are now useful. TestCase has a longMessage attribute.
1023 This defaults to False, but if set to True useful error messages are shown in
1024 addition to explicit messages passed to assert methods.
1026 - Issue #3110: Add additional protect around SEM_VALUE_MAX for multiprocessing
1028 - In Pdb, prevent the reassignment of __builtin__._ by sys.displayhook on
1029 printing out values.
1031 - Issue #4572: added SEEK_* symbolic constants to io module.
1033 - Issue #1665206 (partially): Move imports in cgitb to the top of the module
1034 instead of performing them in functions. Helps prevent import deadlocking in
1037 - Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
1039 - Actually make the SimpleXMLRPCServer CGI handler work.
1041 - Issue #2522: locale.format now checks its first argument to ensure it has
1042 been passed only one pattern, avoiding mysterious errors where it appeared
1043 that it was failing to do localization.
1045 - Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
1048 - Issue #5619: Multiprocessing children disobey the debug flag and causes
1049 popups on windows buildbots. Patch applied to work around this issue.
1051 - Issue #5632: Thread.ident was None for the main thread and threads not created
1052 with the threading module.
1054 - Issue #5400: Added patch for multiprocessing on netbsd compilation/support
1056 - Issue #5387: Fixed mmap.move crash by integer overflow.
1058 - Issue #5261: Patch multiprocessing's semaphore.c to support context
1059 manager use: "with multiprocessing.Lock()" works now.
1061 - Issue #5177: Multiprocessing's SocketListener class now uses
1062 socket.SO_REUSEADDR on all connections so that the user no longer needs
1063 to wait 120 seconds for the socket to expire.
1065 - Adjusted _tkinter to compile without warnings when WITH_THREAD is not
1066 defined (part of issue #5035).
1068 - Issue #5561: Removed the sys.version_info shortcuts from platform's
1069 python_version() and python_version_tuple() since they produced different
1070 output compared to previous Python versions.
1072 - Issue #1034053: unittest now supports skipping tests and expected failures.
1074 - The unittest.TestCase.assertRaises() method now returns a context manager when
1075 not given a callable so that code to be tested can be written inline using
1078 - The unittest.TestCase.assertEqual() now displays the differences in lists,
1079 tuples, dicts and sets on failure. Many new handy type and comparison
1080 specific assert* methods have been added that fail with error messages
1081 actually useful for debugging. Contributed in part by Google. [Issue #2578]
1083 - Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
1084 forever on incomplete input. That caused tarfile.open() to hang when used
1085 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
1086 partial bzip2 compressed data.
1088 - Issue #5536: urllib.urlretrieve makes sure to close the file it's writing to
1089 even if an exception occurs.
1091 - Issue #5381: Added object_pairs_hook to the json module. This allows
1092 OrderedDicts to be built by the decoder.
1094 - Issue #2110: Add support for thousands separator and 'n' type
1095 specifier to Decimal.__format__
1097 - Fix Decimal.__format__ bug that swapped the meanings of the '<' and
1098 '>' alignment characters.
1100 - Issue #1222: locale.format() bug when the thousands separator is a space
1103 - Issue #5472: Fixed distutils.test_util tear down. Original patch by
1106 - collections.deque() objects now have a read-only attribute called maxlen.
1108 - Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
1109 it is has been populated and properly configured in order to prevent
1112 - Issue #4792: Prevent a segfault in _tkinter by using the
1113 guaranteed to be safe interp argument given to the PythonCmd in place of
1114 the Tcl interpreter taken from a PythonCmd_ClientData.
1116 - Issue #5193: Guarantee that Tkinter.Text.search returns a string.
1118 - Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
1119 Original patch by Akira Kitada.
1121 - Issue #5385: Fixed mmap crash after resize failure on windows.
1123 - Issue #5179: Fixed subprocess handle leak on failure on windows.
1125 - PEP 372: Added collections.OrderedDict().
1127 - The _asdict() for method for namedtuples now returns an OrderedDict().
1129 - The configparser module now defaults to using an ordered dictionary.
1131 - Issue #4308: httplib.IncompleteRead's repr doesn't include all of the data all
1134 - Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
1135 import guess_extension`` was used.
1137 - Issue #1733986: Fixed mmap crash in accessing elements of second map object
1138 with same tagname but larger size than first map. (Windows)
1140 - Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
1143 - Issue #1533164: Installed but not listed *.pyo was breaking Distutils
1146 - Issue #5378: added --quiet option to Distutils bdist_rpm command.
1148 - Issue #5052: make Distutils compatible with 2.3 again.
1150 - Deprecated methods of symtable.Symbol have been removed: is_keywordarg(),
1151 is_vararg(), and is_in_tuple().
1153 - Issue #5316: Fixed buildbot failures introduced by multiple inheritance
1156 - Issue #5287: Add exception handling around findCaller() call to help out
1159 - Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
1160 The file was resized to wrong size.
1162 - Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
1164 - Issue #2279: distutils.sdist.add_defaults now add files
1165 from the package_data and the data_files metadata.
1167 - Issue #5257: refactored all tests in distutils, so they use
1168 support.TempdirManager, to avoid writing in the tests directory.
1170 - Issue #4524: distutils build_script command failed with --with-suffix=3.
1171 Initial patch by Amaury Forgeot d'Arc.
1173 - Issue #2461: added tests for distutils.util
1175 - Issue #1008086: Fixed socket.inet_aton() to always return 4 bytes even on
1176 LP64 platforms (most 64-bit Linux, bsd, unix systems).
1178 - Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
1179 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
1181 - Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
1182 under NT and OS2. Patch by Philip Jenvey.
1184 - Issue #5128: Make compileall properly inspect bytecode to determine if needs
1185 to be recreated. This avoids a timing hole thanks to the old reliance on the
1186 ctime of the files involved.
1188 - Issue #5122: Synchronize tk load failure check to prevent a potential
1191 - Issue #1818: collections.namedtuple() now supports a keyword argument
1192 'rename' which lets invalid fieldnames be automatically converted to
1193 positional names in the form, _1, _2, ...
1195 - Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
1197 - Issue #5170: Fixed Unicode output bug in logging and added test case.
1198 This is a regression which did not occur in 2.5.
1200 - Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
1201 public documented method ``ZipImporter.get_filename()``.
1203 - Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
1204 the execution of packages by looking for and executing a ``__main__``
1205 submodule when a package name is supplied. Initial patch by Andi
1208 - Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
1209 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
1210 Tkapp_Call when calling from a thread different than the one that created
1211 the Tcl interpreter. Patch by Robert Hancock.
1213 - Issue #1520877: Now distutils.sysconfig reads $AR from the
1214 environment/Makefile. Patch by Douglas Greiman.
1216 - Issue #4285: Change sys.version_info to be a named tuple. Patch by
1219 - Issue #1276768: The verbose option was not used in the code of
1220 distutils.file_util and distutils.dir_util.
1222 - Issue #5132: Fixed trouble building extensions under Solaris with
1223 --enabled-shared activated. Initial patch by Dave Peterson.
1225 - Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
1227 - Issue #2047: shutil.move() could believe that its destination path was
1228 inside its source path if it began with the same letters (e.g. "src" vs.
1231 - Issue #4920: Fixed .next() vs .__next__() issues in the ABCs for
1232 Iterator and MutableSet.
1234 - Added the ttk module. See issue #2983: Ttk support for Tkinter.
1236 - Issue #5021: doctest.testfile() did not create __name__ and
1237 collections.namedtuple() relied on __name__ being defined.
1239 - Backport importlib from Python 3.1. Only the import_module() function has
1240 been backported to help facilitate transitions from 2.7 to 3.1.
1242 - Issue #1885: distutils. When running sdist with --formats=tar,gztar
1243 the tar file was overriden by the gztar one.
1245 - Issue #4863: distutils.mwerkscompiler has been removed.
1247 - Added a new itertools functions: combinations_with_replacement()
1250 - Issue #5032: added a step argument to itertools.count() and
1251 allowed non-integer arguments.
1253 - Fix and properly document the multiprocessing module's logging
1254 support, expose the internal levels and provide proper usage
1257 - Issue #1672332: fix unpickling of subnormal floats, which was
1258 producing a ValueError on some platforms.
1260 - Issue #3881: Help Tcl to load even when started through the
1261 unreadable local symlink to "Program Files" on Vista.
1263 - Issue #4710: Extract directories properly in the zipfile module;
1264 allow adding directories to a zipfile.
1266 - Issue #3807: _multiprocessing build fails when configure is passed
1267 --without-threads argument. When this occurs, _multiprocessing will
1268 be disabled, and not compiled.
1270 - Issue #5008: When a file is opened in append mode with the new IO library,
1271 do an explicit seek to the end of file (so that e.g. tell() returns the
1272 file size rather than 0). This is consistent with the behaviour of the
1273 traditional 2.x file object.
1275 - Issue #5013: Fixed a bug in FileHandler which occurred when the delay
1278 - Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
1279 which inherited from numbers.py which did not have __slots__ defined. The
1280 numbers hierarchy now has its own __slots__ declarations.
1282 - Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
1283 for *nix machines for negative handles and large int handles. Without this check
1284 it is possible to segfault the interpreter.
1286 - Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
1289 - Issue #1225107: inspect.isclass() returned True for instances with a custom
1292 - Issue #3997: zipfiles generated with more than 65536 files could not be
1293 opened with other applications.
1295 - Issue #1162154: inspect.getmembers() now skips attributes that raise
1296 AttributeError, e.g. a __slots__ attribute which has not been set.
1298 - Issue #1696199: Add collections.Counter() for rapid and convenient
1301 - Issue #3860: GzipFile and BZ2File now support the context manager protocol.
1303 - Issue #4272: Add an optional argument to the GzipFile constructor to override
1304 the timestamp in the gzip stream. The default value remains the current time.
1305 The information can be used by e.g. gunzip when decompressing. Patch by
1308 - Restore Python 2.3 compatibility for decimal.py.
1310 - Issue #1702551: distutils sdist was not excluding VCS directories under
1311 Windows. Inital solution by Guy Dalberto.
1313 - The _tkinter module functions "createfilehandler", "deletefilehandler",
1314 "createtimerhandler", "mainloop", "dooneevent" and "quit" have been
1315 deprecated for removal in 3.x
1317 - Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
1318 to the decimal module.
1320 - Issue #4812: add missing underscore prefix to some internal-use-only
1321 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
1323 - Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
1324 the function is not a generator.
1326 - Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
1327 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
1329 - Issue #4646: distutils was choking on empty options arg in the setup
1330 function. Original patch by Thomas Heller.
1332 - Fractions.from_float() no longer loses precision for integers too big to
1335 - Issue #4790: The nsmallest() and nlargest() functions in the heapq module
1336 did unnecessary work in the common case where no key function was specified.
1338 - Issue #3767: Convert Tk object to string in tkColorChooser.
1340 - Issue #3248: Allow placing ScrolledText in a PanedWindow.
1342 - Issue #4444: Allow assertRaises() to be used as a context handler, so that
1343 the code under test can be written inline if more practical.
1345 - Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
1346 works as expected in the interactive environment.
1348 - Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
1351 - Issue #4400: .pypirc default generated file was broken in distutils.
1353 - Issue #4736: io.BufferedRWPair's closed property now functions properly.
1355 - Issue #3954: Fix a potential SystemError in _hotshot.logreader error
1358 - Issue #4574: fix a crash in io.IncrementalNewlineDecoder when a carriage
1359 return encodes to more than one byte in the source encoding (e.g. UTF-16)
1360 and gets split on a chunk boundary.
1362 - Issue #4223: inspect.getsource() will now correctly display source code
1363 for packages loaded via zipimport (or any other conformant PEP 302
1364 loader). Original patch by Alexander Belopolsky.
1366 - Issue #4201: pdb can now access and display source code loaded via
1367 zipimport (or any other conformant PEP 302 loader). Original patch by
1368 Alexander Belopolsky.
1370 - Issue #4197: doctests in modules loaded via zipimport (or any other PEP
1371 302 conformant loader) will now work correctly in most cases (they
1372 are still subject to the constraints that exist for all code running
1373 from inside a module loaded via a PEP 302 loader and attempting to
1374 perform IO operations based on __file__). Original patch by
1375 Alexander Belopolsky.
1377 - Issues #4082 and #4512: Add runpy support to zipimport in a manner that
1378 allows backporting to maintenance branches. Original patch by
1379 Alexander Belopolsky.
1381 - Issue #4163: Use unicode-friendly word splitting in the textwrap functions
1382 when given an unicode string.
1384 - Issue #4616: TarFile.utime(): Restore directory times on Windows.
1386 - Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
1387 give correct results in the case where one argument is a quiet NaN
1388 and the other is a finite number that requires rounding.
1390 - Issue #1030250: Distutils created directories even when run with the
1393 - Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
1396 - Issue #4529: fix the parser module's validation of try-except-finally
1399 - Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
1400 not a malformed option.
1402 - Added the subprocess.check_output() convenience function to get output
1403 from a subprocess on success or raise an exception on error.
1405 - Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1406 support unusual filenames (such as those containing semi-colons) in
1407 Content-Disposition headers.
1409 - Issue #4384: Added logging integration with warnings module using
1410 captureWarnings(). This change includes a NullHandler which does nothing;
1411 it will be of use to library developers who want to avoid the "No handlers
1412 could be found for logger XXX" message which can appear if the library user
1413 doesn't configure logging.
1415 - Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
1418 - Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
1419 the ctypes module is not present.
1421 - FileIO's mode attribute now always includes ``"b"``.
1423 - Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
1425 - httplib.HTTPConnection.putheader() now accepts an arbitrary number of values
1426 for any header, matching what the documentation has claimed for a while.
1428 - Issue #3774: Fixed an error when create a Tkinter menu item without command
1431 - Fixed a modulefinder crash on certain relative imports.
1433 - Issue #4150: Pdb's "up" command now works for generator frames in post-mortem
1436 - Issue #4092: Return ArgInfo as promised in the documentation from
1437 inspect.getargvalues.
1439 - Issue #3935: Properly support list subclasses in bisect's C implementation.
1441 - Issue #4014: Don't claim that Python has an Alpha release status, in addition
1442 to claiming it is Mature.
1444 - Issue #4730: Fixed the cPickle module to handle correctly astral characters
1445 when protocol 0 is used.
1447 - Issue #1594: MacOS.GetCreatorAndType now always returns a big-endian result,
1448 to be consistent with Apple tools.
1450 - Issue #900949: plat-mac/videoreader.py no longer relies on a non-existing
1453 - Issue #16278952: plat-mac/videoreader.py now correctly imports MediaDescr
1455 - Issue #1737832 : plat-mac/EasyDialog.py no longer uses the broken aepack
1458 - Issue #1149804: macostools.mkdirs now even works when another process
1459 creates one of the needed subdirectories.
1461 - Issue #900506: added --no-zipimport flag to the bundlebuilder script
1463 - Issue #841800: bundlebuilder now works with 'python -O'
1465 - Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
1466 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
1468 - Issue #5104: The socket module now raises OverflowError when 16-bit port and
1469 protocol numbers are supplied outside the allowed 0-65536 range on bind()
1470 and getservbyport().
1472 - Issue #999042: The Python compiler now handles explict global statements
1473 correctly (should be assigned using STORE_GLOBAL opcode).
1475 - Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
1476 new arguments introduced in 2.5.
1478 - Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
1479 makeunicodedata.py and regenerated the Unicode database (This fixes
1480 u'\u1d79'.lower() == '\x00').
1482 - Windows locale mapping updated to Vista.
1487 - Ttk demos added in Demo/tkinter/ttk/
1489 - Issue #4677: add two list comprehension tests to pybench.
1494 - Issue #6603: Change READ_TIMESTAMP macro in ceval.c so that it
1495 compiles correctly under gcc on x86-64. This fixes a reported
1496 problem with the --with-tsc build on x86-64.
1498 - Add 2 new options to ``--with-universal-archs`` on MacOSX:
1499 ``intel`` builds a distribution with ``i386`` and ``x86_64`` architectures,
1500 while ``3-way`` builds a distribution with the ``ppc``, ``i386``
1501 and ``x86_64`` architectures.
1503 - Issue #6802: Fix build issues on MacOSX 10.6
1505 - Issue #6244: Allow detect_tkinter to look for Tcl/Tk 8.6.
1507 - Issue 5390: Add uninstall icon independent of whether file
1508 extensions are installed.
1510 - Issue 5809: Specifying both --enable-framework and --enable-shared is
1511 an error. Configure now explicity tells you about this.
1513 - Issue #3585: Add pkg-config support. It creates a python-2.7.pc file
1514 and a python.pc symlink in the $(LIBDIR)/pkgconfig directory. Patch by
1517 - Issue #6094: Build correctly with Subversion 1.7.
1519 - Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
1521 - Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
1522 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
1524 - Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
1525 the order that backends for the dbm extension are checked.
1527 - Link the shared python library with $(MODLIBS).
1529 - Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
1531 - Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
1533 - Issue #4895: Use _strdup on Windows CE.
1535 - Issue #4472: "configure --enable-shared" now works on OSX
1537 - Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
1539 - Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
1541 - Issue #4289: Remove Cancel button from AdvancedDlg.
1543 - Issue #1656675: Register a drop handler for .py* files on Windows.
1545 - Issue #4120: Exclude manifest from extension modules in VS2008.
1547 - Issue #4091: Install pythonxy.dll in system32 again.
1549 - Issue #4018: Disable "for me" installations on Vista.
1551 - Issue #3758: Add ``patchcheck`` build target to .PHONY.
1553 - Issue #4204: Fixed module build errors on FreeBSD 4.
1558 - Issue #6556: Fixed the Distutils configuration files location explanation
1561 - Issue #6801 : symmetric_difference_update also accepts |.
1562 Thanks to Carl Chenet.
1567 - Issue #Add '%lld' and '%llu' support to PyString_FromFormat(V)
1568 and PyErr_Format, on machines with HAVE_LONG_LONG defined.
1570 - Add new C-API function PyOS_string_to_double, and deprecated
1571 PyOS_ascii_atof and PyOS_ascii_strtod.
1573 - Removed _PyOS_double_to_string. Use PyOS_double_to_string
1574 instead. This is in preparation for (but not strictly related to)
1575 issue #7117, short float repr.
1577 - Issue #6624: PyArg_ParseTuple with "s" format when parsing argument with
1578 NULL: Bogus TypeError detail string.
1580 - Issue #5954: Add a PyFrame_GetLineNumber() function to replace most uses of
1583 - Issue #5959: Add a PyCode_NewEmpty() function to create a new empty code
1584 object at a specified file, function, and line number.
1586 - Issue #1419652: Change the first argument to PyImport_AppendInittab() to
1587 ``const char *`` as the string is stored beyond the call.
1589 - Some PyBytes_* aliases have been removed because they don't exist in 3.x.
1591 - Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
1592 for negative arguments. Previously, it raised TypeError.
1594 - Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
1596 - Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
1597 the GIL is released, or owned by another thread.
1599 - Issue #4122: On Windows, fix a compilation error when using the
1600 Py_UNICODE_ISSPACE macro in an extension module.
1602 - Issue #4293: Py_AddPendingCall is now thread safe and can be used for
1603 asynchronous notifications to python from any thread. Documentation added.
1608 - Issue #6508: Add posix.{getresuid,getresgid,setresuid,setresgid}.
1610 - Issue #7078: Set struct.__doc__ from _struct.__doc__.
1612 - Issue #3366: Add gamma function to math module.
1614 - Issue #6823: Allow time.strftime() to accept a tuple with a isdst field
1615 outside of the range of [-1, 1] by normalizing the value to within that
1618 - Issue #6877: Make it possible to link the readline extension to libedit
1621 - Issue #6944: Fix a SystemError when socket.getnameinfo() was called
1622 with something other than a tuple as first argument.
1624 - Issue #6865: Fix reference counting issue in the initialization of the pwd
1627 - Issue #6848: Fix curses module build failure on OS X 10.6.
1629 - Fix a segfault in expat when given a specially crafted input lead to the
1630 tokenizer not stopping.
1632 - Issue #6561: '\d' in a regex now matches only characters with
1633 Unicode category 'Nd' (Number, Decimal Digit). Previously it also
1634 matched characters with category 'No'.
1636 - Issue #1523: Remove deprecated overflow wrapping for struct.pack
1637 with an integer format code ('bBhHiIlLqQ'). Packing an out-of-range
1638 integer now consistently raises struct.error.
1640 - Issues #1530559, #1741130: Fix various struct.pack inconsistencies
1641 for the integer formats ('bBhHiIlLqQ'). In the following, '*'
1642 represents any of '=', '<', '>'.
1644 - Packing a float now always gives a Deprecation Warning.
1645 Previously it only warned for 'I', 'L', '*B', '*H', '*I', '*L'.
1647 - If x is not an int, long or float, then packing x will always
1648 result in struct.error. Previously an x with an __int__ method
1649 could be packed by 'b', 'B', 'h', 'H', 'i', 'l', '*b', '*h'
1650 ,'*i', '*l', and an x with a __long__ method could be packed by
1651 'q', 'Q', '*q', '*Q'; for x with neither __int__ nor __long__,
1652 TypeError used to be raised (with a confusing error message) for
1653 'I', 'L', '*B', '*H', '*I', '*L', and struct.error in other cases.
1655 - Issue #4873: Fix resource leaks in error cases of pwd and grp.
1657 - Issue #4751: For hashlib algorithms provided by OpenSSL, the Python
1658 GIL is now released during computation on data lengths >= 2048 bytes.
1660 - Issue #3745: Fix hashlib to always reject unicode and non buffer-api
1661 supporting objects as input no matter how it was compiled (built in
1662 implementations or external openssl library).
1664 - Issue #4397: Fix occasional test_socket failure on OS X.
1666 - Issue #4279: Fix build of parsermodule under Cygwin.
1668 - Issue #4051: Prevent conflict of UNICODE macros in cPickle.
1670 - Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
1672 - Issue #1040026: Fix os.times result on systems where HZ is incorrect.
1674 - Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
1677 - Issue #4365: Add crtassem.h constants to the msvcrt module.
1679 - Issue #4396: The parser module now correctly validates the with statement.
1681 - Issue #5228: Make functools.partial objects can now be pickled.
1686 - Issue #7324: add a sanity check to regrtest argument parsing to
1687 catch the case of an option with no handler.
1689 - Issue #7312: Add a -F flag to run the selected tests in a loop until
1690 a test fails. Can be combined with -j.
1692 - Issue #7295: Do not use a hardcoded file name in test_tarfile.
1694 - Issue #7270: Add some dedicated unit tests for multi-thread synchronization
1695 primitives such as Lock, RLock, Condition, Event and Semaphore.
1697 - Issue #7222: Make thread "reaping" more reliable so that reference
1698 leak-chasing test runs give sensible results. The previous method of
1699 reaping threads could return successfully while some Thread objects were
1700 still referenced. This also introduces a new private function:
1701 :func:`thread._count()`.
1703 - Issue #7151: fixed regrtest -j so that output to stderr from a test no
1704 longer runs the risk of causing the worker thread to fail.
1706 - Issue #7055: test___all__ now greedily detects all modules which have an
1707 __all__ attribute, rather than using a hardcoded and incomplete list.
1709 - Issue #7058: Added save/restore for things like sys.argv and cwd to
1710 runtest_inner in regrtest, with warnings if the called test modifies them,
1711 and a new section in the summary report at the end.
1713 - Issue #7042: Fix test_signal (test_itimer_virtual) failure on OS X 10.6.
1715 - Issue #6806: test_platform failed under OS X 10.6.0 because ``sw_ver`` leaves
1716 off the trailing 0 in the version number.
1718 - Issue #5450: Moved tests involving loading tk from Lib/test/test_tcl to
1719 Lib/lib-tk/test/test_tkinter/test_loadtk. With this, these tests demonstrate
1720 the same behaviour as test_ttkguionly (and now also test_tk) which is to
1721 skip the tests if DISPLAY is defined but can't be used.
1723 - Issue #6152: New option '-j'/'--multiprocess' for regrtest allows running
1724 regression tests in parallel, shortening the total runtime.
1726 - Issue #5354: New test support function import_fresh_module() makes
1727 it easy to import both normal and optimised versions of modules.
1728 test_heapq and test_warnings have been adjusted to use it, tests for
1729 other modules with both C and Python implementations in the stdlib
1730 can be adjusted to use it over time.
1732 - Fix test_warnings to no longer reset the warnings filter.
1734 - Fix test_logging to no longer reset the warnings filter.
1736 - Issue #5635: Fix running test_sys with tracing enabled.
1738 - regrtest no longer treats ImportError as equivalent to SkipTest. Imports
1739 that should cause a test to be skipped are now done using import_module
1740 from test support, which does the conversion.
1742 - Issue #5083: New 'gui' resource for regrtest.
1744 - Issue #5837: Certain sequences of calls to set() and unset() for
1745 support.EnvironmentVarGuard objects restored the environment variables
1746 incorrectly on __exit__.
1748 - Issue #2389: Array objects are now pickled in a portable manner.
1753 - Issue #5611: Auto-detect whether a C file uses tabs or spaces in Vim.
1756 What's New in Python 2.6 final
1757 ==============================
1759 *Release date: 01-Oct-2008*
1764 - Issue #3967: Fixed a crash in the count() and find() methods of string-like
1765 objects, when the "start" parameter is a huge value.
1767 - Issue #3965: Fixed a crash on Windows when open() is given an invalid
1768 filename or mode, and the filename is a unicode string.
1770 - Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
1775 - Issue #3965: Allow repeated calls to turtle.Screen, by making it a
1776 true singleton object.
1778 - Issue #3895: It was possible to crash the interpreter when an external timer
1779 was used with cProfile that returned an object that could not be converted
1782 - Issue #3950: Made turtle respect scale factors.
1784 - Issue #3547: Fixed ctypes structures bitfields of varying integer
1787 - Issue #3879: A regression in urllib.getproxies_enviroment was fixed.
1789 - Issue #3863: Disabled a unit test of fork being called from a thread
1790 when running on platforms known to exhibit OS bugs when attempting that.
1795 - Bug #3989: Package the 2to3 script (as 2to3.py) in the Windows
1798 - Bug #3887: Package x64 version of CRT for AMD64 Windows binaries.
1801 What's New in Python 2.6 release candidate 2?
1802 =============================================
1804 *Release date: 17-Sep-2008*
1812 - Security Issue #2: imageop did not validate arguments correctly and could
1813 segfault as a result.
1815 - Issue #3886: Possible integer overflows in the _hashopenssl module were
1821 - Issue #3850: recursion tests in Tools/scripts/find_recursion_limit.py can raise
1822 AttributeError instead of RuntimeError, depending in which C API call
1823 exactly the recursion limit is exceeded. Consequently, both exception types
1824 are caught and silenced.
1829 - Issue #3617: Include a licensing statement regarding the Microsoft
1830 C runtime in the Windows installer.
1833 What's New in Python 2.6 release candidate 1?
1834 =============================================
1836 *Release date: 12-Sep-2008*
1841 - Issue #3642: Suppress warning in obmalloc when size_t is larger than uint.
1843 - Issue #3743: In a few places, PY_FORMAT_SIZE_T was incorrectly used with
1844 PyString_FromFormat or PyErr_Format to display size_t values. The macro
1845 PY_FORMAT_SIZE_T is designed to select the correct format for the OS
1846 ``printf`` function, whereas PyString_FromFormat has an independent
1847 implementation and uses "%zd" on all platforms for size_t values.
1848 This makes a difference on win64, where ``printf`` needs "%Id" to display
1851 - Issue #3634: _weakref.ref(Exception).__init__() gave invalid return value on
1854 - Issue #3777: long() applied to a float object now always return a long
1855 object; previously an int would be returned for small values. the __long__
1856 method is allowed to return either an int or a long, but the behaviour of
1857 float objects should not change to respect backward compatibility.
1859 - Issue #3751: str.rpartition would perform a left-partition when called with
1862 - Issue #3683: Fix compilation when --without-threads is given.
1864 - Issue #3668: Fix a memory leak with the "s*" argument parser in
1865 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
1866 was correctly parsed but parsing of subsequent arguments failed.
1868 - Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
1869 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
1870 mechanism. In the process, fix a bug where isinstance() and issubclass(),
1871 when given a tuple of classes as second argument, were looking up
1872 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
1875 - Fix crashes on memory allocation failure found with failmalloc.
1877 - Fix memory leaks found with valgrind and update suppressions file.
1879 - Fix compiler warnings in opt mode which would lead to invalid memory reads.
1881 - Fix problem using wrong name in decimal module reported by pychecker.
1883 - Silenced another compiler warning about a used but not defined
1884 function 'stringlib_contains_obj'.
1886 - Added warnings on the use of ``__getslice__``, ``__setslice__``, or
1889 - Issue #3678: Correctly pass LDFLAGS and LDLAST to the linker on shared
1890 library targets in the Makefile.
1892 - Issue #1204: The configure script now tests for additional libraries
1893 that may be required when linking against readline. This fixes issues
1894 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
1899 - Aliased PyObject_Bytes to PyObject_Str.
1904 - Issue #3640: Pickling a list or a dict uses less local variables, to reduce
1905 stack usage in the case of deeply nested objects.
1907 - Issue #3629: Fix sre "bytecode" validator for an end case.
1909 - Issue #3811: The Unicode database was updated to 5.1.
1911 - Issue #3781: Further warnings.catch_warnings() cleanup to prevent
1912 silent misbehaviour when a single instance is nested in multiple
1913 with statements, or when the methods are invoked in the wrong order.
1915 - Issue #3809: Fixed spurious 'test.blah' file left behind by test_logging.
1917 - Issue #3781: Clean up the API for warnings.catch_warnings() by having it
1918 return a list or None rather than a custom object.
1920 - Issue #1638033: Cookie.Morsel gained the httponly attribute.
1922 - Issue #3535: zipfile couldn't read some zip files larger than 2GB.
1924 - Issue #3776: Deprecate the bsddb package for removal in 3.0.
1926 - Issue #3762: platform.architecture() fails if python is lanched via
1929 - Issue #3772: Fixed regression problem in StreamHandler.emit().
1931 - Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
1932 to the urlparse one. Added a PendingDeprecationWarning in the old
1933 module, it will be deprecated in the future.
1935 - Issue #2562: Fix distutils PKG-INFO writing logic to allow having
1936 non-ascii characters and Unicode in setup.py meta-data.
1938 - Issue #3726: Allow spaces in separators in logging configuration files.
1940 - Issue #3719: platform.architecture() fails if there are spaces in the
1941 path to the Python binary.
1943 - Issue 3602: Moved test.test_support.catch_warning() to
1944 warnings.catch_warnings() along with some API cleanup. Expanding the tests
1945 for catch_warnings() also led to an improvement in the raising of a
1946 DeprecationWarning related to warnings.warn_explicit().
1948 - The deprecation warnings for the old camelCase threading API were removed.
1950 - logging: fixed lack of use of encoding attribute specified on a stream.
1952 - Silenced a trivial compiler warning in the sqlite module.
1954 - Fixed two format strings in the _collections module.
1956 - Issue #3703: _fileio.FileIO gave unhelpful error message when trying to open a
1959 - Issue #3708: os.urandom no longer goes into an infinite loop when passed a
1960 non-integer floating point number.
1962 - Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
1968 - Issue #4301: Patch the logging module to add processName support, remove
1969 _check_logger_class from multiprocessing.
1971 - Issue #2975: When compiling several extension modules with Visual Studio 2008
1972 from the same python interpreter, some environment variables would grow
1975 - Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
1976 exploitation of poor argument checking.
1978 - sqlite3: Changed docstring of iterdump() to mark method as "Non-standard".
1980 - Issue #3103: Reduced globals symbols used by sqlite3 module and made sure all
1981 remaining ones have "pysqlite_" prefix.
1983 - Issue #3846: Release the GIL during sqlite3_prepare calls. This improves
1984 concurrent access to the same SQLite database from multiple
1990 - Issue #3781: Add test.test_support.check_warnings() as a convenience
1991 wrapper for warnings.catch_warnings() that makes it easier to check
1992 that expected warning messages are being reported.
1994 - Issue #3796: Some tests functions were not enabled in test_float.
1996 - Issue #3768: Move test_py3kwarn over to the new API for catch_warnings().
2001 - Issue #3833: Use a different upgrade code for Win64 installers.
2003 - Issue #2271: Set SecureCustomProperties so that installation will properly
2004 use the TARGETDIR even for unprivileged users.
2006 - Allow passing the MSI file name to merge.py.
2008 - Issue #3758: Rename the 'check' target to 'patchcheck' so as to not clash
2009 with GNU build target guidelines.
2012 What's New in Python 2.6 beta 3?
2013 ================================
2015 *Release date: 20-Aug-2008*
2020 - Issue #1878: Remove Py_TPFLAGS_HAVE_VERSION_TAG from
2021 Py_TPFLAGS_DEFAULT when not building the core. This means 3rd party
2022 extensions do not automatically benefit from the class attribute
2023 cache; they will have to explicitly add Py_TPFLAGS_HAVE_VERSION_TAG
2024 to their tp_flags field if they care. This is a backwards
2025 compatibility feature; in 3.0, all types will use the cache by
2028 - Keyword arguments can now follow starred arguments. (``f(a, *args,
2029 keyword=23)`` is now valid syntax.)
2031 - ctypes function pointers that are COM methods have a boolean True
2034 - Issue #3139: Make buffer-interface thread-safe wrt. PyArg_ParseTuple,
2035 by denying s# to parse objects that have a releasebuffer procedure,
2038 - Issue #3537: Fix an assertion failure when an empty but presized dict
2039 object was stored in the freelist.
2041 - Issue #1481296: Make long(float('nan')) and int(float('nan')) raise
2042 ValueError consistently across platforms.
2044 - Issue #3479: On platforms where sizeof(int) is smaller than sizeof(long)
2045 (64bit Unix, for example), unichr() would truncate its argument and return
2046 u'\x00' for unichr(2**32). Now it properly raises an OverflowError.
2048 - Apply security patches from Apple.
2050 - Issue #2542: Now that issubclass() may call arbitrary code, ensure that
2051 PyErr_ExceptionMatches returns 0 when an exception occurs there.
2053 - Issue #1819: function calls with several named parameters are now on
2054 average 35% faster (as measured by pybench).
2056 - Issue #2378: An unexpected UnboundLocalError or NameError could appear when
2057 the python debugger steps into a class statement: the free variables (local
2058 variables defined in an outer scope) would be deleted from the outer scope.
2060 - Issue #2620: Overflow checking when allocating or reallocating memory
2061 was not always being done properly in some python types and extension
2062 modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
2063 all been updated to perform better checks and places in the code that
2064 would previously leak memory on the error path when such an allocation
2065 failed have been fixed.
2070 - Issue #3612: Added some missing basic types in ctypes.wintypes.
2072 - The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
2073 symtable.Symbol have been deprecated for removal in 3.0 and the next release.
2075 - Issue #2234: distutils failed for some versions of the cygwin compiler. The
2076 version reported by these tools does not necessarily follow the python
2077 version numbering scheme, so the module is less strict when parsing it.
2079 - Issue #2235: Added Py3k warnings for types which will become unhashable
2080 under the stricter __hash__ inheritance rules in 3.0. Several types
2081 which did not meet the rules for hash invariants and were already
2082 unhashable in 3.0 have now been explicitly flagged as unhashable in
2083 2.6 as well (collections.Mapping, collections.Set, unittest.TestSuite,
2084 xml.dom.minidom.NamedNodeMap, numbers.Number, UserList.UserList)
2086 - Update __all__ for cookielib, csv, os, urllib2, and weakref to include things
2087 imported into the module but exposed as part of the module's API.
2089 - Remove an unneeded import of abc.ABCMeta from 'inspect'.
2091 - Remove unneeded imports of 'sys' and 'warnings' from 'io'.
2093 - Remove unneeded imports of 'warnings' from shelve, filecmp, and dummy_thread.
2095 - Issue #3575: Incremental decoder's decode function now takes bytearray
2096 by using 's*' instead of 't#'.
2098 - Issue #2222: Fixed reference leak when occurred os.rename()
2099 fails unicode conversion on 2nd parameter. (windows only)
2101 - Issue 2464. urllib2 now supports a malformation in the URL received
2104 - Silence the DeprecationWarning raised when importing mimetools in
2105 BaseHTTPServer, cgi (and rfc822), httplib.
2107 - Issue #2776: fixed small issue when handling an URL with double slash
2108 after a 302 response in the case of not going through a proxy.
2110 - Issue #2676: in the email package, content-type parsing was hanging on
2111 pathological input because of quadratic or exponential behaviour of a
2114 - Issue #3476: binary buffered reading through the new "io" library is now
2117 - Silence the DeprecationWarning of rfc822 when it is imported by mimetools
2118 since mimetools itself is deprecated. Because modules are cached, all
2119 subsequent imports of rfc822 will not raise a visible DeprecationWarning.
2121 - Issue #3134: shutil referenced undefined WindowsError symbol.
2123 - Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
2124 menu entries were not deleted.
2126 - Copied the implementation of reduce() to _functools.reduce() to have a
2127 version that did not raise a DeprecationWarning under -3.
2129 - Issue #3205: When iterating over a BZ2File fails allocating memory, raise
2130 a MemoryError rather than silently stop the iteration.
2132 - Issue #3487: sre "bytecode" validator. Passing invalid "re-bytecode"
2133 to _sre.compile() will now be rejected. This should not affect anybody
2134 since the re.compile() function never generates invalid re-bytecode.
2136 - Issue #3436: Make csv.DictReader's fieldnames attribute a property so that
2137 upon first access it can be automatically initialized from the csv file if
2138 it wasn't initialized during instantiation.
2140 - Issue #2338: Create imp.reload() to help with transitioning to Python 3.0 as
2141 the reload() built-in has been removed.
2143 - Changed code in the following modules/packages to remove warnings raised
2144 while running under the ``-3`` flag: aifc, asynchat, asyncore, bdb, bsddb,
2145 ConfigParser, cookielib, csv, difflib, distutils, DocXMLRPCServer, email,
2146 filecmp, fileinput, inspect, logging, modulefinder, pdb, pickle, profile,
2147 pstats, pydoc, re, rlcompleter, SimpleXMLRPCServer, shelve, socket,
2148 subprocess, sqlite3, tarfile, Tkinter, test.test_support, textwrap,
2149 threading, tokenize, traceback, urlparse, wsgiref, xml, xmlrpclib.
2151 - Issue #3039: Fix tarfile.TarFileCompat.writestr() which always
2152 raised an AttributeError.
2154 - Issue #2523: Fix quadratic behaviour when read()ing a binary file without
2155 asking for a specific length. This problem only affected files opened
2156 using the new "io" module, not the built-in open() function.
2158 - Issue #3449: Update decimal module to use most recent specification
2159 (v. 1.68) and tests (v. 2.58) from IBM.
2161 - Issue 3437: Bug fix in robotparser parsing of Allow: lines.
2163 - Issue 1592: Improve error reporting when operations are attempted
2166 - Deprecate the "ast" parser function aliases.
2168 - Issue #3120: On 64-bit Windows the subprocess module was truncating handles.
2170 - Issue #3303: Fix a crash in locale.strcoll() when calling it with
2173 - Issue #3302: Fix several crashes when calling locale's gettext functions
2174 with None arguments.
2176 - Issue #3389: Allow resolving dotted names for handlers in logging
2177 configuration files.
2179 - Deprecate the sunaudio module for removal in Python 3.0.
2181 - Issue #3394: zipfile.writestr sets external attributes when passed a
2182 file name rather than a ZipInfo instance, so files are extracted with
2183 mode 0600 rather than 000 under Unix.
2185 - Issue #1857: subprocess.Popen.poll gained an additional _deadstate keyword
2186 argument in python 2.5, this broke code that subclassed Popen to include its
2187 own poll method. Fixed my moving _deadstate to an _internal_poll method.
2192 - Generate the PatternGrammar pickle during "make install".
2197 - Issue #2235: the C API function PyObject_HashNotImplemented and its
2198 interaction with the tp_hash slot (added in 2.6b2) are now documented
2200 - Issue #643841: The language reference now provides more detailed
2201 coverage of the lookup process for special methods. The disclaimers
2202 regarding lack of coverage of new-style classes have also been
2203 removed, since the coverage is now fairly reasonable.
2206 What's New in Python 2.6 beta 2?
2207 ================================
2209 *Release date: 17-Jul-2008*
2214 - Issue #3156: Fix inconsistent behavior of the bytearray type: all
2215 its methods now allow for items objects that can be converted to
2216 an integer using operator.index().
2218 - Issue #3360: Fix incorrect parsing of '020000000000.0', which
2219 produced a ValueError instead of giving the correct float.
2221 - Issue #3083: Add alternate (#) formatting for bin, oct, hex output
2222 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
2224 - Issue #3008: the float type has a new instance method 'float.hex'
2225 and a new class method 'float.fromhex' to convert floating-point
2226 numbers to and from hexadecimal strings, respectively.
2228 - Issue #2235: __hash__ is once again inherited by default. To allow
2229 collections.Hashable to remain meaningful in the presence of the
2230 default hash implementation (object.__hash__), it is now possible
2231 to explicit block inheritance of hash by setting __hash__=None at
2232 the Python level, or tp_hash=PyObject_HashNotImplemented at the C
2235 - Issue #3221: Issue a RuntimeWarning instead of raising SystemError if
2236 the parent module cannot be found while performing an absolute import.
2237 This means that an incorrectly defined __package__ attribute will
2238 now only prevent relative imports in that module rather than causing
2239 all imports from that module to fail.
2241 - Issue #2517: Allow unicode messages in Exceptions again by correctly
2242 bypassing the instance dictionary when looking up __unicode__ on
2245 - Issue #3242: Fix a crash inside the print statement, if sys.stdout is
2246 set to a custom object whose write() method happens to install
2247 another file in sys.stdout.
2249 - Issue #3088: Corrected a race condition in classes derived from
2250 threading.local: the first member set by a thread could be saved in
2251 another thread's dictionary.
2253 - Issue #3004: Minor change to slice.indices(): the start and stop
2254 arguments are now treated identically, making the behaviour easier
2255 to describe and understand. For example, slice(None, -10,
2256 1).indices(9) now returns (0, 0, 1) instead of (0, -1, 1), and
2257 slice(None, 10, -1).indices(10) returns (9, 9, -1) instead of (9,
2260 - Issue #3219: Calling a function with repeated keyword arguments,
2261 f(a=2, a=23), would not cause a syntax error. This was a regression
2262 from 2.4 caused by the switch to the new compiler.
2264 - Issue #2862: Make int and float freelist management consistent with
2265 other freelists. Changes their CompactFreeList apis into
2266 ClearFreeList apis and calls them via gc.collect().
2271 - Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
2272 api functions without holding the GIL, which could lead to a fatal
2273 error when they failed.
2275 - Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
2277 - Issue #3395: fix reference in test_multiprocessing to old debugInfo method
2279 - Issue #3312: Fix two crashes in sqlite3.
2281 - Issue #1608818: Fix misbehavior in os.listdir() if readdir() fails.
2283 - Issue #3125: Remove copy_reg in multiprocessing and replace it with
2284 ForkingPickler.register() to resolve conflict with ctypes.
2286 - Issue #3090: Fixed ARCHFLAGS parsing on OS/X
2288 - Issue #3313: Fixed a crash when a failed dlopen() call does not set
2289 a valid dlerror() message.
2291 - Issue #3258: Fixed a crash when a ctypes POINTER type to an
2292 incomplete structure was created.
2294 - Issue #3339: dummy_thread.acquire() should not return None.
2296 - Issue #3285: Fractions from_float() and from_decimal() accept Integral arguments.
2298 - Issue #3301: Bisect module behaved badly when lo was negative.
2300 - Issue #839496: SimpleHTTPServer used to open text files in text mode. This is
2301 both unnecessary (HTTP allows text content to be sent in several forms) and
2302 wrong because the actual transmitted size could differ from the
2303 content-length. The problem had been corrected in the 2.4 branch, but never
2306 - Issue #2663: add filtering capability to shutil.copytree().
2308 - Issue #1622: Correct interpretation of various ZIP header fields.
2310 - Issue #1526: Allow more than 64k files to be added to Zip64 file.
2312 - Issue #1746: Correct handling of zipfile archive comments (previously
2313 archives with comments over 4k were flagged as invalid). Allow writing
2314 Zip files with archives by setting the 'comment' attribute of a ZipFile.
2316 - Issue #449227: The rlcompleter module now adds "(" to callable objects
2319 - Issue #3190: Pydoc now hides the automatic module attribute __package__ (the
2320 handling is now the same as that of other special attributes like __name__).
2322 - Issue #2885 (partial): The urllib.urlopen() function has been deprecated for
2323 removal in Python 3.0 in favor of urllib2.urlopen().
2325 - Issue #2113: Fix error in subprocess.Popen if the select system call is
2326 interrupted by a signal.
2328 - Issue #3309: Fix bz2.BZFile iterator to release its internal lock
2329 properly when raising an exception due to the bz2file being closed.
2330 Prevents a deadlock.
2332 - Issue #3094: httplib.HTTPSConnection Host: headers no longer include the
2333 redundant ":443" port number designation when the connection is using the
2334 default https port (443).
2336 - Issue #874900: after an os.fork() call the threading module state is cleaned
2337 up in the child process to prevent deadlock and report proper thread counts
2338 if the new process uses the threading module.
2343 - test.test_support.catch_warning now keeps track of all warnings it sees
2344 and is now better documented. Explicit unit tests for this context manager
2345 have been added to test_warnings.
2350 - Issue #3215: Build sqlite3 as sqlite3.dll, not sqlite3.pyd.
2356 - Document that robotparser has been renamed to urllib.robotparser in
2359 - Document that urlparse has been renamed to urllib.parse in Python 3.0.
2361 - Document that urllib2 is split across multiple modules and renamed in
2364 - Document that urllib is split across multiple modules and renamed in
2368 What's New in Python 2.6 beta 1?
2369 ================================
2371 *Release date: 18-June-2008*
2376 - Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
2377 argument being anything other than a dict or None. Also fixed a bug in error
2378 handling when 'message' and 'category' were both set to None, triggering a
2381 - Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
2382 holds the last (strong) reference to its referent.
2384 - Add future_builtins.ascii().
2386 - Several set methods now accept multiple arguments: update(), union(),
2387 intersection(), intersection_update(), difference(), and difference_update().
2389 - Issue #2898: Added sys.getsizeof() to retrieve size of objects in bytes.
2391 - New environment variable PYTHONIOENCODING.
2393 - Patch #2488: Add sys.maxsize.
2395 - Issue #2353: file.xreadlines() now emits a Py3k warning.
2397 - Issue #2863: generators now have a ``gen.__name__`` attribute that
2398 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
2399 ``func.func_code.co_name``. The repr() of a generator now also
2402 - Issue #2831: enumerate() now has a ``start`` argument.
2404 - Issue #2801: fix bug in the float.is_integer method where a
2405 ValueError was sometimes incorrectly raised.
2407 - Issue #2790: sys.flags was not properly exposing its bytes_warning
2410 - Issue #2196: hasattr() now lets exceptions which do not inherit
2411 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
2414 - Added checks for integer overflows, contributed by Google. Some are
2415 only available if asserts are left in the code, in cases where they
2416 can't be triggered from Python code.
2421 - Issue #1179: [CVE-2007-4965] Integer overflow in imageop module.
2423 - Issue #3116: marshal.dumps() had quadratic behavior for strings > 32Mb.
2425 - Issue #2138: Add factorial() to the math module.
2427 - The heapq module does comparisons using LT instead of LE. This
2428 makes its implementation match that used by list.sort().
2430 - Issue #2819: add full-precision summation function to math module,
2431 based on Hettinger's ASPN Python Cookbook recipe.
2433 - Issue #2592: delegate nb_index and the floor/truediv slots in
2436 - Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
2439 - Support for Windows 9x has been removed from the winsound module.
2441 - bsddb module updated to version 4.7.3.
2442 http://www.jcea.es/programacion/pybsddb.htm#bsddb3-4.7.3. This
2443 code should be compatible with Python 3.0.
2445 - Issue #2858: Fix potential memory corruption when
2446 bsddb.db.DBEnv.lock_get and other bsddb.db object constructors
2447 raised an exception.
2449 - Issue #2669: bsddb/__init__.py iteration no longer silently fails when
2450 the database has changed size during iteration. It now raises a
2451 RuntimeError in the same manner as a dictionary.
2453 - Issue #2870: cmathmodule.c compile error.
2455 - Added a threading.Thread.ident property.
2460 - logging.config: Removed out-of-date comment in _install_handlers and
2461 used issubclass in place of equality comparison of classes.
2463 - Issue #2722: Now the os.getcwd() supports very long path names.
2465 - Issue #2888: Fixed the behaviour of pprint when working with nested
2466 structures, to match the behaviour of 2.5 and 3.0 (now follows the common
2469 - Issue #1817: cgi now correctly handles the querystring on POST requests
2471 - Issue #3136: fileConfig()'s disabling of old loggers is now conditional via
2472 an optional disable_existing_loggers parameter, but the default value is
2473 such that the old behaviour is preserved. Thanks to Leandro Lucarella for
2476 - Issue #3126: StreamHandler and FileHandler check before calling "flush" and
2477 "close" that the stream object has these, using hasattr (thanks to bobf for
2480 - Issue #2912: platform.uname now tries to determine unknown information even if
2483 - The rfc822 module has been deprecated for removal in 3.0.
2485 - The mimetools module has been deprecated for removal in 3.0.
2487 - The ctypes.byref function now takes an optional second parameter
2488 which allows to specify an offset in bytes for the constructed
2489 pointer-like object.
2491 - Added the ast module.
2493 - Added the multiprocessing module, PEP 371.
2495 - Factored out the indentation cleaning from inspect.getdoc() into
2496 inspect.cleandoc() to ease standalone use.
2498 - Issue #1798: Add ctypes calling convention that allows safe access
2501 - Issue #2404: ctypes objects support the new pep3118 buffer interface.
2503 - Patch #2125: Add GetInteger and GetString methods for
2504 msilib.Record objects.
2506 - Issue #2782: The datetime module's strftime methods now accept
2507 unicode format strings just as time.strftime always has.
2509 - The sgmllib and htmllib modules have been deprecated for removal
2512 - Issue #3011: locale module alias table was updated to the latest
2513 version from the X.org locale.alias file.
2515 - Issue #1797 (partial fix): ctypes NULL function pointers have a
2516 False boolean value now.
2518 - Issue #2985: Allow 64-bit integer responses (``<i8>``) in XMLRPC
2521 - Issue #2877: The UserString.MutableString class has been removed in
2524 - Do not close external file objects passed to tarfile.open(mode='w:bz2')
2525 when the TarFile is closed.
2527 - Issue #2959: For consistency with other file-like objects, gzip's
2528 GzipFile.close() can now be called multiple times without raising
2531 - Issue #1390: Raise ValueError in toxml when an invalid comment would
2532 otherwise be produced.
2534 - Issue #2914: TimedRotatingFileHandler now takes an optional keyword
2535 argument "utc" to use UTC time rather than local time.
2537 - Issue #2929: TimedRotatingFileHandler was using the wrong path when
2538 deleting old log files (filename only instead of full path).
2540 - Issue #1775025: You can now specify zipfile members to open(),
2541 read() or extract() via a ZipInfo instance. This allows handling
2542 duplicate filenames in zipfiles.
2544 - Issue #961805: Fix Text.edit_modified() in Tkinter.
2546 - Issue #1793: Function ctypes.util.find_msvcrt() added that returns
2547 the name of the C runtime library that Python uses.
2548 ctypes.util.find_library(name) now call this function when name is
2551 - The statvfs module has been deprecated for removal in Python 3.0.
2553 - The sunaudiodev and SUNAUDIODEV modules have been deprecated for
2554 removal in Python 3.0.
2556 - The WAIT module from IRIX has been deprecated for removal in Python
2559 - The torgb module from IRIX has been deprecated for removal in Python
2562 - The SV module from IRIX has been deprecated for removal in Python
2565 - The readcd module from IRIX has been deprecated for removal in
2568 - The panelparser module from IRIX has been deprecated for removal in
2571 - The panel module from IRIX has been deprecated for removal in Python
2574 - The jpeg module from IRIX has been deprecated for removal in Python
2577 - The IOCTL module from IRIX has been deprecated for removal in Python
2580 - The IN module from IRIX has been deprecated for removal in Python
2583 - The imgfile module from IRIX has been deprecated for removal in
2586 - The GLWS module from IRIX has been deprecated for removal in Python
2589 - The GET module from IRIX has been deprecated for removal in Python
2592 - The fm module from IRIX has been deprecated for removal in Python
2595 - The FL, flp, and fl modules from IRIX have been deprecated for
2596 removal in Python 3.0.
2598 - The FILE module on IRIX has been deprecated for removal in Python
2601 - The ERRNO module on IRIX has been deprecated for removal in Python
2604 - The DEVICE, GL, gl, and cgen modules (which indirectly includes
2605 cgensupport) have been deprecated for removal in Python 3.0.
2607 - The CL, CL_old, and cl modules for IRIX have been deprecated for
2608 removal in Python 3.0.
2610 - The cdplayer module for IRIX has been deprecated for removal in
2613 - The cddb module for IRIX has been deprecated for removal in Python
2616 - The cd and CD modules for IRIX have been deprecated for removal in
2619 - The al and AL modules for IRIX have been deprecated for removal in
2622 - Issue #1713041: fix pprint's handling of maximum depth.
2624 - The timing module has been deprecated for removal in Python 3.0.
2626 - The sv module has been deprecated for removal in Python 3.0.
2628 - The multifile module has been deprecated as per PEP 4.
2630 - The imageop module has been deprecated for removal in Python 3.0.
2632 - Issue #2250: Exceptions raised during evaluation of names in
2633 rlcompleter's ``Completer.complete()`` method are now caught and
2636 - Issue #2659: Added ``break_on_hyphens`` option to textwrap
2639 - The mhlib module has been deprecated for removal in Python 3.0.
2641 - The linuxaudiodev module has been deprecated for removal in Python
2644 - The ihooks module has been deprecated for removal in Python 3.0.
2646 - The fpformat module has been deprecated for removal in Python 3.0.
2648 - The dl module has been deprecated for removal in Python 3.0.
2650 - The Canvas module has been deprecated for removal in Python 3.0.
2652 - The compiler package has been deprecated for removal in Python 3.0.
2654 - The Bastion and rexec modules have been deprecated for removal in
2657 - The bsddb185 module has been deprecated for removal in Python 3.0.
2659 - The pure module has been deprecated for removal in Python 3.0.
2661 - Issue #2487: change the semantics of math.ldexp(x, n) when n is too
2662 large to fit in a C long. ldexp(x, n) now returns a zero (with
2663 suitable sign) if n is large and negative; previously, it raised
2666 - The toaiff module has been deprecated for removal in Python 3.0.
2668 - The test.testall module has been deprecated for removal in Python
2671 - The new module has been deprecated for removal in Python 3.0.
2673 - The user module has been deprecated for removal in Python 3.0.
2675 - The stringold module has been deprecated for removal in Python 3.0.
2677 - The mutex module has been deprecated for removal in Python 3.0.
2679 - The imputil module has been deprecated for removal in Python 3.0.
2681 - test.test_support.catch_warning() gained a 'record' argument.
2683 - os.path.walk is deprecated in favor of os.walk.
2685 - pdb gained the "until" command.
2687 - The Mac Modules (including Carbon) have been deprecated for removal
2690 - Library: on MacOS X you can now set ``ARCHFLAGS`` in the shell
2691 environment to control the '-arch' flags that are used to build
2692 an extension. This was added for compatibility with Apple's build
2695 - The bundled OSX-specific copy of libbffi is now in sync with the version
2696 shipped with PyObjC 2.0 and includes support for x86_64 and ppc64 platforms.
2698 - The threading module gained aliases for names that will be removed in the
2704 - The Windows installer now includes Tk 8.5, bzip2 1.0.5, and SQLite 3.5.9.
2706 - Patch #1722225: Support QNX 6.
2708 - ``Lib/lib-old`` is now added to sys.path.
2710 - On MacOS X it is now possible to install the framework in 64-bit
2711 mode or even as a 4-way universal binary (that is, PPC, i386,
2712 PPC64 and x86_64 support in one binary).
2714 This is controlled by the configure argument ``--with-universal-archs``:
2716 - ``--with-universal-archs=all``: install 4-way universal
2718 - ``--with-universal-archs=32-bit``: install 2-way universal, 32-bit (the default)
2720 - ``--with-universal-archs=64-bit``: install 2-way universal, 64-bit
2722 This option should be used in combination with ``--enable-universalsdk=``.
2724 NOTE: 64-bit and 4-way builds are only suppported on Mac OS X 10.5 (or later).
2730 - Add ``PyType_Modified()`` as a public API to clear the type cache.
2732 - The PyBytes functions have been renamed to PyByteArray.
2734 - The PyString functions have been renamed to PyBytes. A batch of
2735 defines were added so that the linker still sees the original
2739 What's New in Python 2.6 alpha 3?
2740 =================================
2742 *Release date: 08-May-2008*
2747 - Issue #2719: backported the ``next()`` builtin from Python 3.
2749 - Issue #2681: The octal literal ``0o8`` was incorrecly acctepted. Now
2750 it properly raises a SyntaxError.
2752 - Issue #2617: Reserved -J and -X arguments for Jython, IronPython and
2753 other implementations of Python.
2755 - Implemented PEP 370: Per user site-packages directory.
2760 - Issue #2670: Fix a failure in urllib2.build_opener(), when passed
2761 two handlers that derive the same default base class.
2763 - Added kill, terminate and send_signal(sig) to subprocess.Popen.
2765 - Added phase(z) -> phi, polar(z) -> r, phi and rect(r, phi) -> z to
2768 - Four new methods were added to the math and cmath modules: acosh,
2769 asinh, atanh and log1p.
2771 - zlib.decompressobj().flush(value) no longer crashes the interpreter
2772 when passed a value less than or equal to zero.
2774 - Issue #1631171: Re-implement the 'warnings' module in C (the
2775 original Python code has been kept as backup). This will allow for
2776 using the 'warning's machinery in such places as the parser where
2777 use of pure Python code is not possible. Both the ``showarning()``
2778 and ``formatwarning()`` gain an optional 'line' argument which is
2779 not called by default for backwards-compatibility reasons. Setting
2780 ``warnings.showwarning()`` to an implementation that lacks support
2781 for the ``line`` argument will raise a DeprecationWarning.
2786 - The audiodev module has been deprecated for removal in Python 3.0.
2788 - Issue #2750: Add the 'json' package. Based on simplejson 1.9 and
2789 contributed by Bob Ippolito.
2791 - Issue #1734346: Support Unicode file names for zipfiles.
2793 - Issue #2581: distutils: Vista UAC/elevation support for
2796 - Issue #2635: Fix bug in 'fix_sentence_endings' textwrap.fill option,
2797 where an extra space was added after a word containing (but not
2798 ending in) '.', '!' or '?'.
2800 - Add from_buffer() and from_buffer_copy() class methods to ctypes
2803 - Issue #2682: ctypes callback functions no longer contain a cyclic
2804 reference to themselves.
2806 - The getpass module has been improved on Unix. It now uses /dev/tty
2807 by default and uses stderr instead of stdout. A GetPassWarning is
2808 issued when input echo cannot be controlled.
2810 - Issue #2014: Allow XML-RPC datetime objects to have dates before
2813 - Issue #2439: Added new function pkgutil.get_data(), which is a
2814 convenience wrapper for the PEP 302 get_data() API.
2816 - Issue #2616: The ctypes.pointer() and ctypes.POINTER() functions are
2817 now implemented in C for better performance.
2819 - Issue #2408: The ``_types`` module, which was used as in
2820 implementation detail of the public ``types`` module, has been
2821 removed and replaced by pure python code.
2823 - Issue #2513: distutils on Windows is now capable of cross-compiling
2824 extension modules between 32 and 64 bit platforms. See the distutls
2825 build documentation for more information.
2827 - Issue #815646: Individual file objects may now be used from multiple
2828 threads at once without fear of crashing the Python interpreter. If
2829 file.close() is called while an object is in use by another thread
2830 an IOError exception will be raised and the file will not be closed.
2832 - The bundled libffi copy is now in sync with the recently released
2833 libffi3.0.5 version, apart from some small changes to
2834 Modules/_ctypes/libffi/configure.ac.
2836 - Issue #2385: distutils.core.run_script() makes __file__ available,
2837 so the controlled environment will more closely mirror the typical
2838 script environment. This supports setup.py scripts that refer to
2844 - Issue #2550: The approach used by client/server code for obtaining
2845 ports to listen on in network-oriented tests has been refined in an
2846 effort to facilitate running multiple instances of the entire
2847 regression test suite in parallel without issue.
2848 test_support.bind_port() has been fixed such that it will always
2849 return a unique port -- which wasn't always the case with the
2850 previous implementation, especially if socket options had been set
2851 that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The
2852 new implementation of bind_port() will actually raise an exception
2853 if it is passed an AF_INET/SOCK_STREAM socket with either the
2854 SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if
2855 available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on
2856 the socket it's been passed. This currently only applies to
2857 Windows. This option prevents any other sockets from binding to the
2858 host/port we've bound to, thus removing the possibility of the
2859 'non-deterministic' behaviour, as Microsoft puts it, that occurs
2860 when a second SOCK_STREAM socket binds and accepts to a host/port
2861 that's already been bound by another socket. The optional preferred
2862 port parameter to bind_port() has been removed. Under no
2863 circumstances should tests be hard coding ports!
2865 test_support.find_unused_port() has also been introduced, which will
2866 pass a temporary socket object to bind_port() in order to obtain an
2867 unused port. The temporary socket object is then closed and
2868 deleted, and the port is returned. This method should only be used
2869 for obtaining an unused port in order to pass to an external program
2870 (i.e. the -accept [port] argument to openssl's s_server mode) or as
2871 a parameter to a server-oriented class that doesn't give you direct
2872 access to the underlying socket used.
2874 Finally, test_support.HOST has been introduced, which should be used
2875 for the host argument of any relevant socket calls (i.e. bind and
2878 The following tests were updated to following the new conventions:
2879 test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib,
2880 test_poplib, test_ftplib, test_telnetlib, test_socketserver,
2881 test_asynchat and test_socket_ssl.
2883 It is now possible for multiple instances of the regression test
2884 suite to run in parallel without issue.
2889 - Issue #1496032: On alpha, use -mieee when gcc is the compiler.
2891 - Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
2892 gcc is used as compiler.
2894 - Issue #2573: On MacOS X it is now possible to install the framework
2895 with a different name using --with-framework-name=NAME.
2900 - Added implementation of copysign, acosh, asinh, atanh and log1p to
2901 the new files Include/pymath.h and Python/pymath.h for platforms
2902 which provide the functions through their libm. The files also
2903 contains several helpers and constants for math.
2905 - Added a new convenience macro, PyErr_WarnPy3k, for issuing Py3k warnings.
2908 What's New in Python 2.6 alpha 2?
2909 =================================
2911 *Release date: 02-Apr-2008*
2916 - Issue #1733757: The interpreter would hang on shutdown if the
2917 tracing function set by sys.settrace is still active and happens to
2918 call threading.currentThread().
2920 - Patch #1442: properly report exceptions when the PYTHONSTARTUP file
2923 - The compilation of a class nested in another class used to leak one
2924 reference on the outer class name.
2926 - Patch #1810: compile() can now compile _ast trees as returned by
2927 ``compile(..., PyCF_ONLY_AST)``.
2929 - Patch #2426: Added sqlite3.Connection.iterdump method to allow easy
2930 dumping of databases. Contributed by Paul Kippes at PyCon 2008.
2932 - Patch #2477: Added from __future__ import unicode_literals.
2934 - Added backport of bytearray type.
2936 - Issue #2355: add Py3k warning for buffer().
2938 - Issue #1477: With narrow Unicode builds, the unicode escape sequence
2939 \Uxxxxxxxx did not accept values outside the Basic Multilingual
2940 Plane. This affected raw unicode literals and the
2941 'raw-unicode-escape' codec. Now UTF-16 surrogates are generated in
2942 this case, like normal unicode literals and the 'unicode-escape'
2945 - Issue #2348: add Py3k warning for file.softspace.
2947 - Issue #2346/#2347: add Py3k warnings for __methods__ and
2950 - Issue #2358: Add a Py3k warning on sys.exc_clear() usage.
2952 - Issue #2400: Allow relative imports to "import *".
2954 - Issue #1745: Backport print function with ``from __future__ import
2957 - Issue #2332: add new attribute names for instance method objects.
2958 The two changes are: im_self -> __self__ and im_func -> __func__
2960 - Issue #2379: Raise a Py3K warning for __getitem__ or __getslice__ on
2961 exception instances.
2963 - Issue #2371: Add a Py3k warning when catching an exception that
2964 doesn't derive from BaseException.
2966 - Issue #2341: Add a Py3k warning when raising an exception that
2967 doesn't derive from BaseException.
2969 - Issue #2321: use pymalloc for unicode object string data to reduce
2970 memory usage in some circumstances.
2972 - PEP 3127: octal literals now start with "0o". Old-style octal
2973 literals are still valid. There are binary literals with a prefix of
2974 "0b". This also affects int(x, 0).
2976 - Issue #2359: Adding deprecation warnings for array.{read,write}.
2978 - Issue #1779871: GNU gcc can now build Python on OS X because the
2979 flags -Wno-long-double, -no-cpp-precomp, and -mno-fused-madd are no
2982 - Add a warning when asserting a non-empty tuple which is always true.
2984 - Issue #2179: speed up with statement execution by storing the exit
2985 method on the stack instead of in a temporary variable (patch by
2988 - Issue #2238: Some syntax errors in *args and **kwargs expressions
2989 could give bogus error messages.
2991 - Issue #2143: Fix embedded readline() hang on SSL socket EOF.
2996 - Patch #2240: Implement signal.setitimer and signal.getitimer.
3001 - Issue #2315: logging.handlers: TimedRotatingFileHandler now accounts
3002 for daylight savings time in calculating the next rollover.
3004 - Issue #2316: logging.handlers: TimedRotatingFileHandler now
3005 calculates rollovers correctly even when nothing is logged for a
3008 - Issue #2317: logging.handlers: TimedRotatingFileHandler now uses
3009 improved logic for removing old files.
3011 - Issue #2495: tokenize.untokenize now inserts a space between two
3012 consecutive string literals; previously, ["" ""] was rendered as
3013 [""""], which is incorrect python code.
3015 - Issue #2248: return the result of the QUIT command. from
3018 - Backport of Python 3.0's io module.
3020 - Issue #2482: Make sure that the coefficient of a Decimal is always
3021 stored as a str instance, not as a unicode instance. This ensures
3022 that str(Decimal) is always an instance of str.
3024 - Issue #2478: fix failure of decimal.Decimal(0).sqrt()
3026 - Issue #2432: give DictReader the dialect and line_num attributes
3027 advertised in the docs.
3029 - Issue #2460: Make Ellipsis object copyable.
3031 - Issue #1681432: Add triangular distribution to the random module
3033 - Issue #2136: urllib2's auth handler now allows single-quoted realms
3034 in the WWW-Authenticate header.
3036 - Issue #2434: Enhanced platform.win32_ver() to also work on Python
3037 installation which do not have the win32all package installed.
3039 - Added support to platform.uname() to also report the machine and
3040 processor information on Windows XP and later. As a result,
3041 platform.machine() and platform.processor() will report this
3042 information as well.
3044 - The library implementing the 2to3 conversion, lib2to3, was added to
3045 the standard distribution.
3047 - Issue #1747858: Fix chown to work with large uid's and gid's on
3050 - Issue #1202: zlib.crc32 and zlib.adler32 no longer return different
3051 values on 32-bit vs. 64-bit python interpreters. Both were correct,
3052 but they now both return a signed integer object for consistency.
3054 - Issue #1158: add %f format (fractions of a second represented as
3055 microseconds) to datetime objects. Understood by both strptime and
3058 - Issue #705836: struct.pack(">f", x) now raises OverflowError on all
3059 platforms when x is too large to fit into an IEEE 754 float;
3060 previously it only raised OverflowError on non IEEE 754 platforms.
3062 - Issues #2166, #1741 and #1531505: now distutils deals with HOME
3063 correctly under win32
3065 - Patch #1858: distutils: added multiple server support in .pypirc
3067 - Issue #1106316: pdb.post_mortem()'s parameter, "traceback", is now
3068 optional: it defaults to the traceback of the exception that is
3069 currently being handled (is mandatory to be in the middle of an
3070 exception, otherwise it raises ValueError).
3072 - Issue #1193577: A .shutdown() method has been added to SocketServers
3073 which terminates the .serve_forever() loop.
3075 - Issue #2220: handle rlcompleter attribute match failure more
3078 - Issue #2225: py_compile, when executed as a script, now returns a
3079 non- zero status code if not all files could be compiled
3082 - Bug #1725737: In distutils' sdist, exclude RCS, CVS etc. also in the
3083 root directory, and also exclude .hg, .git, .bzr, and _darcs.
3085 - Issue #1872: The struct module typecode for _Bool has been changed
3088 - The bundled libffi copy is now in sync with the recently released
3089 libffi3.0.4 version, apart from some small changes to
3090 Modules/_ctypes/libffi/configure.ac. On OS X, preconfigured libffi
3091 files are used. On all linux systems the --with-system-ffi
3092 configure option defaults to "yes".
3094 - Issue #1577: shutil.move() now calls os.rename() if the destination
3095 is a directory instead of copying-then-remove-source.
3100 - test_nis no longer fails when test.test_support.verbose is true and
3101 NIS is not set up on the testing machine.
3103 - Output comparison tests are no longer supported.
3105 - Rewrite test_errno to use unittest and no longer be a no-op.
3107 - GHOP 234: Convert test_extcall to doctest.
3109 - GHOP 290: Convert test_dbm and test_dummy_threading to unittest.
3111 - GHOP 293: Convert test_strftime, test_getargs, and test_pep247 to
3114 - Issue #2055: Convert test_fcntl to unittest.
3116 - Issue 1960: Convert test_gdbm to unittest.
3118 - GHOP 294: Convert test_contains, test_crypt, and test_select to
3121 - GHOP 238: Convert test_tokenize to use doctest.
3123 - GHOP 237: Rewrite test_thread using unittest.
3125 - Patch #2232: os.tmpfile might fail on Windows if the user has no
3126 permission to create files in the root directory.
3131 - A new script 2to3 is now installed, to run the 2.x to 3.x converter.
3133 - Python/memmove.c and Python/strerror.c have been removed; both
3134 functions are in the C89 standard library.
3136 - Patch #2284: Add -x64 option to rt.bat.
3141 - Patch #2477: Added PyParser_ParseFileFlagsEx() and
3142 PyParser_ParseStringFlagsFilenameEx().
3145 What's New in Python 2.6 alpha 1?
3146 =================================
3148 *Release date: 29-Feb-2008*
3153 - Issue #2051: pyc and pyo files are no longer created with permission
3154 644. The mode is now inherited from the py file.
3156 - Issue #2067: file.__exit__() now calls subclasses' close() method.
3158 - Patch #1759: Backport of PEP 3129 class decorators.
3160 - Issue #1881: An internal parser limit has been increased. Also see
3161 issue 215555 for a discussion.
3163 - Added the future_builtins module, which contains hex() and oct().
3164 These are the PEP 3127 version of these functions, designed to be
3165 compatible with the hex() and oct() builtins from Python 3.0. They
3166 differ slightly in their output formats from the existing, unchanged
3167 Python 2.6 builtins. The expected usage of the future_builtins
3169 from future_builtins import hex, oct
3171 - Issue #1600: Modifed PyOS_ascii_formatd to use at most 2 digit
3172 exponents for exponents with absolute value < 100. Follows C99
3173 standard. This is a change on Windows, which would use 3 digits.
3174 Also, added 'n' to the formats that PyOS_ascii_formatd understands,
3175 so that any alterations it does to the resulting string will be
3176 available in stringlib/formatter.h (for float.__format__).
3178 - Implemented PEP 3101, Advanced String Formatting. This adds a new
3179 builtin format(); a format() method for str and unicode; a
3180 __format__() method to object, str, unicode, int, long, float, and
3181 datetime; the class string.Formatter; and the C API
3184 - Fixed several potential crashes, all caused by specially crafted
3185 __del__ methods exploiting objects in temporarily inconsistent
3188 - Issue #2115: Important speedup in setting __slot__ attributes. Also
3189 prevent a possible crash: an Abstract Base Class would try to access
3190 a slot on a registered virtual subclass.
3192 - Fixed repr() and str() of complex numbers with infinity or nan as
3193 real or imaginary part.
3195 - Clear all free lists during a gc.collect() of the highest generation
3196 in order to allow pymalloc to free more arenas. Python may give back
3197 memory to the OS earlier.
3199 - Issue #2045: Fix an infinite recursion triggered when printing a
3200 subclass of collections.defaultdict, if its default_factory is set
3203 - Fixed a minor memory leak in dictobject.c. The content of the free
3204 list was not freed on interpreter shutdown.
3206 - Limit free list of method and builtin function objects to 256
3209 - Patch #1953: Added ``sys._compact_freelists()`` and the C API
3210 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
3211 to compact the internal free lists of pre-allocted ints and floats.
3213 - Issue #1983: Fixed return type of fork(), fork1() and forkpty()
3214 calls. Python expected the return type int but the fork familie
3217 - Issue #1678380: Fix a bug that identifies 0j and -0j when they
3218 appear in the same code unit.
3220 - Issue #2025: Add tuple.count() and tuple.index() methods to comply
3221 with the collections.Sequence API.
3223 - Patch #1970 by Antoine Pitrou: Speedup unicode whitespace and
3226 - Added ``PyType_ClearCache()`` and ``sys._clear_type_cache`` to clear
3227 the internal lookup cache for ref leak tests.
3229 - Patch #1473257: generator objects gain a gi_code attribute. This is
3230 the same object as the func_code attribute of the function that
3231 produced the generator.
3233 - Issue #1920: "while 0" statements were completely removed by the
3234 compiler, even in the presence of an "else" clause, which is
3235 supposed to be run when the condition is false. Now the compiler
3236 correctly emits bytecode for the "else" suite.
3238 - A few crashers fixed: weakref_in_del.py (issue #1377858);
3239 loosing_dict_ref.py (issue #1303614, test67.py);
3240 borrowed_ref_[34].py (not in tracker).
3242 - Issue #1069410: The "can't load dll" message box on Windows is
3243 suppressed while an extension is loaded by calling SetErrorMode in
3244 dynload_win.c. The error is still reported properly.
3246 - Issue #1915: Python compiles with --enable-unicode=no again. However
3247 several extension methods and modules do not work without unicode
3250 - Issue #1882: when compiling code from a string, encoding cookies in the
3251 second line of code were not always recognized correctly.
3253 - Issue #1679: "0x" was taken as a valid integer literal.
3255 - Issue #1865: ``bytes`` as an alias for ``str`` and b"" as an alias "" were
3258 - sys.float_info / PyFloat_GetInfo: The floating point information
3259 object was converted from a dict to a specialized structseq object.
3261 - Patch #1816: Added sys.flags structseq. It exposes the status of
3262 most command line arguments and PYTHON* environment variables.
3264 - Objects/structseq.c: Implemented new structseq representation. The
3265 patch makes structseqs (e.g. the return value of os.stat) more
3268 - Patch #1700288: added a type attribute cache that caches method
3269 accesses, resulting in speedups in heavily object-oriented code.
3271 - Bug #1776: __import__() no longer accepts filenames on any platform.
3272 The first parameter to __import__() must be a valid module name.
3274 - Patch #1668: renamed THREADDEBUG envvar to PYTHONTHREADDEBUG.
3276 - Patch #602345: Add -B command line option, PYTHONDONTWRITEBYTECODE
3277 envvar and sys.dont_write_bytecode attribute. All these can be set
3278 to forbid Python to attempt to write compiled bytecode files.
3280 - Improve some exception messages when Windows fails to load an
3281 extension module. Now we get for example '%1 is not a valid Win32
3282 application' instead of 'error code 193'.
3284 - Bug #1481296: Fixed long(float('nan')) != 0L.
3286 - Issue #1640: Added math.isinf(x), math.isnan(x) and math.copysign(x,
3289 - Issue #1635: Platform independent creation and representation of NaN
3290 and INF. float("nan"), float("inf") and float("-inf") now work on
3291 every platform with IEEE 754 semantics.
3293 - Compiler now generates simpler and faster code for dictionary
3294 literals. The oparg for BUILD_MAP now indicates an estimated
3295 dictionary size. There is a new opcode, STORE_MAP, for adding
3296 entries to the dictionary.
3298 - Issue #1638: %zd configure test fails on Linux.
3300 - Issue #1620: New property decorator syntax was modifying the
3301 decorator in place instead of creating a new decorator object.
3303 - Issue #1538: Avoid copying string in split/rsplit if the split char
3306 - Issue #1553: An erroneous __length_hint__ can make list() raise a
3309 - PEP 366: Allow explicit relative imports when executing modules
3310 inside packages with the -m switch via a new module level
3311 __package__ attribute.
3313 - Issue #1402: Fix a crash on exit, when another thread is still
3314 running, and if the deallocation of its frames somehow calls the
3315 PyGILState_Ensure() / PyGILState_Release() functions.
3317 - Expose the Py_Py3kWarningFlag as sys.py3kwarning.
3319 - Issue #1445: Fix a SystemError when accessing the ``cell_contents``
3320 attribute of an empty cell object.
3322 - Issue #1460: The utf-7 incremental decoder did not accept truncated
3323 input. It now correctly saves its state between chunks of data.
3325 - Patch #1739468: Directories and zipfiles containing a __main__.py
3326 file can now be directly executed by passing their name to the
3327 interpreter. The directory/zipfile is automatically inserted as the
3328 first entry in sys.path.
3330 - Issue #1265: Fix a problem with sys.settrace, if the tracing
3331 function uses a generator expression when at the same time the
3332 executed code is closing a paused generator.
3334 - sets and frozensets now have an isdisjoint() method.
3336 - optimize the performance of builtin.sum().
3338 - Fix warnings found by the new version of the Coverity checker.
3340 - The enumerate() builtin function is no longer bounded to sequences
3341 smaller than LONG_MAX. Formerly, it raised an OverflowError. Now,
3342 automatically shifts from ints to longs.
3344 - Issue #1686386: Tuple's tp_repr did not take into account the
3345 possibility of having a self-referential tuple, which is possible
3346 from C code. Nor did object's tp_str consider that a type's tp_str
3347 could do something that could lead to an inifinite recursion.
3348 Py_ReprEnter() and Py_EnterRecursiveCall(), respectively, fixed the
3351 - Issue #1164: It was possible to trigger deadlock when using the
3352 'print' statement to write to a file since the GIL was not released
3353 as needed. Now PyObject_Print() does the right thing along with
3354 various tp_print implementations of the built-in types and those in
3355 the collections module.
3357 - Issue #1147: Exceptions were directly allowing string exceptions in
3358 their throw() method even though string exceptions no longer
3361 - Issue #1096: Prevent a segfault from getting the repr of a very
3362 deeply nested list by using the recursion counter.
3364 - Issue #1202533: Fix infinite recursion calls triggered by calls to
3365 PyObject_Call() never calling back out to Python code to trigger
3366 recursion depth updates/checks. Required the creation of a static
3367 RuntimeError instance in case normalizing an exception put the
3368 recursion check value past its limit. Fixes crashers
3369 infinite_rec_(1|2|4|5).py.
3371 - Patch #1031213: Decode source line in SyntaxErrors back to its
3372 original source encoding.
3374 - Patch #1673759: add a missing overflow check when formatting floats
3377 - Prevent expandtabs() on string and unicode objects from causing a
3378 segfault when a large width is passed on 32-bit platforms.
3380 - Issue #1733488: Fix compilation of bufferobject.c on AIX.
3382 - Issue #1722485: remove docstrings again when running with -OO.
3384 - Add new attribute names for function objects. All the func_* become
3385 __*__ attributes. (Some already existed, e.g., __doc__ and
3388 - Add -3 option to the interpreter to warn about features that are
3389 deprecated and will be changed/removed in Python 3.0.
3391 - Patch #1686487: you can now pass any mapping after '**' in function
3394 - except clauses may now be spelled either "except E, target:" or
3395 "except E as target:". This is to provide forwards compatibility
3398 - Deprecate BaseException.message as per PEP 352.
3400 - Issue #1303614: don't expose object's __dict__ when the dict is
3401 inherited from a builtin base.
3403 - When __slots__ are set to a unicode string, make it work the same as
3404 setting a plain string, ie don't expand to single letter identifiers.
3406 - Request #1191699: Slices can now be pickled.
3408 - Request #1193128: str.translate() now allows a None argument for
3409 translations that only remove characters without re-mapping the
3410 remaining characters.
3412 - Patch #1682205: a TypeError while unpacking an iterable is no longer
3413 masked by a generic one with the message "unpack non-sequence".
3415 - Remove unused file Python/fmod.c.
3417 - Bug #1683368: The object.__init__() and object.__new__() methods are
3418 now stricter in rejecting excess arguments. The only time when
3419 either allows excess arguments is when it is not overridden and the
3420 other one is. For backwards compatibility, when both are
3421 overridden, it is a deprecation warning (for now; maybe a Py3k
3422 warning later). Also, type.__init__() insists on the same signature
3423 as supported by type.__new__().
3425 - Patch #1675423: PyComplex_AsCComplex() now tries to convert an
3426 object to complex using its __complex__() method before falling back
3427 to the __float__() method. Therefore, the functions in the cmath
3428 module now can operate on objects that define a __complex__()
3431 - Patch #1623563: allow __class__ assignment for classes with
3432 __slots__. The old and the new class are still required to have the
3435 - Patch #1642547: Fix an error/crash when encountering syntax errors
3436 in complex if statements.
3438 - Patch #1462488: Python no longer segfaults when
3439 ``object.__reduce_ex__()`` is called with an object that is faking
3442 - Patch #1680015: Don't modify __slots__ tuple if it contains an
3445 - Patch #1444529: the builtin compile() now accepts keyword arguments.
3447 - Bug #1678647: write a newline after printing an exception in any
3448 case, even when converting the value to a string failed.
3450 - The dir() function has been extended to call the __dir__() method on
3451 its argument, if it exists. If not, it will work like before. This
3452 allows customizing the output of dir() in the presence of a
3455 - Patch #922167: Python no longer segfaults when faced with infinitely
3456 self-recursive reload() calls (as reported by bug #742342).
3458 - Patch #1675981: remove unreachable code from ``type.__new__()``
3461 - Patch #1491866: change the complex() constructor to allow
3462 parthensized forms. This means complex(repr(x)) now works instead of
3463 raising a ValueError.
3465 - Patch #703779: unset __file__ in __main__ after running a file. This
3466 makes the filenames the warning module prints much more sensible
3467 when a PYTHONSTARTUP file is used.
3469 - Variant of patch #697613: don't exit the interpreter on a SystemExit
3470 exception if the -i command line option or PYTHONINSPECT environment
3471 variable is given, but break into the interactive interpreter just
3472 like on other exceptions or normal program exit.
3474 - Patch #1638879: don't accept strings with embedded NUL bytes in
3477 - Bug #1674503: close the file opened by execfile() in an error
3480 - Patch #1674228: when assigning a slice (old-style), check for the
3481 sq_ass_slice instead of the sq_slice slot.
3483 - When printing an unraisable error, don't print exceptions. before
3484 the name. This duplicates the behavior whening normally printing
3487 - Bug #1653736: Properly discard third argument to
3488 slot_nb_inplace_power.
3490 - PEP 352: Raising a string exception now triggers a TypeError.
3491 Attempting to catch a string exception raises DeprecationWarning.
3493 - Bug #1377858: Fix the segfaulting of the interpreter when an object
3494 created a weakref on itself during a __del__ call for new-style
3495 classes (classic classes still have the bug).
3497 - Bug #1579370: Make PyTraceBack_Here use the current thread, not the
3498 frame's thread state.
3500 - patch #1630975: Fix crash when replacing sys.stdout in
3503 - Prevent seg fault on shutdown which could occur if an object raised
3506 - Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, to
3507 avoid relying on atexit.
3509 - Bug #1590891: random.randrange don't return correct value for big
3512 - Patch #1586791: Better exception messages for some operations on
3513 strings, tuples and lists.
3515 - Bug #1067760: Deprecate passing floats to file.seek.
3517 - Bug #1591996: Correctly forward exception in instance_contains().
3519 - Bug #1588287: fix invalid assertion for `1,2` in debug builds.
3521 - Bug #1576657: when setting a KeyError for a tuple key, make sure
3522 that the tuple isn't used as the "exception arguments tuple".
3524 - Bug #1565514: SystemError not raised on too many nested blocks.
3526 - Bug #1576174: WindowsError now displays the windows error code
3527 again, no longer the posix error code.
3529 - Patch #1549049: Support long values in structmember, issue warnings
3530 if the assigned value for structmember fields gets truncated.
3532 - Update the peephole optimizer to remove more dead code (jumps after
3533 returns) and inline unconditional jumps to returns.
3535 - Bug #1545497: when given an explicit base, int() did ignore NULs
3536 embedded in the string to convert.
3538 - Bug #1569998: break inside a try statement (outside a loop) is now
3539 recognized and rejected.
3541 - list.pop(x) accepts any object x following the __index__ protocol.
3543 - A number of places, including integer negation and absolute value,
3544 were fixed to not rely on undefined behaviour of the C compiler
3547 - Bug #1566800: make sure that EnvironmentError can be called with any
3548 number of arguments, as was the case in Python 2.4.
3550 - Patch #1567691: super() and new.instancemethod() now don't accept
3551 keyword arguments any more (previously they accepted them, but
3554 - Fix a bug in the parser's future statement handling that led to
3555 "with" not being recognized as a keyword after, e.g., this
3556 statement: from __future__ import division, with_statement
3558 - Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).
3560 - Fix %zd string formatting on Mac OS X so it prints negative numbers.
3562 - Allow exception instances to be directly sliced again.
3564 - Bug #1551432: Exceptions do not define an explicit __unicode__
3565 method. This allows calling unicode() on exceptions classes
3566 directly to succeed.
3568 - Bug #1542051: Exceptions now correctly call PyObject_GC_UnTrack.
3569 Also make sure that every exception class has __module__ set to
3572 - Bug #1550983: emit better error messages for erroneous relative
3573 imports (if not in package and if beyond toplevel package).
3575 - Overflow checking code in integer division ran afoul of new gcc
3576 optimizations. Changed to be more standard-conforming.
3578 - Patch #1542451: disallow continue anywhere under a finally.
3580 - Patch #1546288: fix seg fault in dict_equal due to ref counting bug.
3582 - The return tuple from str.rpartition(sep) is (tail, sep, head) where
3583 head is the original string if sep was not found.
3585 - Bug #1520864: unpacking singleton tuples in list comprehensions and
3586 generator expressions (x for x, in ... ) works again. Fixing this
3587 problem required changing the .pyc magic number. This means that
3588 .pyc files generated before 2.5c2 will be regenerated.
3590 - ``with`` and ``as`` are now keywords.
3592 - Bug #1664966: Fix crash in exec if Unicode filename can't be
3595 - Issue #1537: Changed GeneratorExit's base class from Exception to
3598 - Issue #1703448: A joined thread could show up in the
3599 threading.enumerate() list after the join() for a brief period until
3606 - Patch #2274: Add heapq.heappushpop().
3608 - Add inspect.isabstract(object) to fix bug #2223
3610 - Add a __format__ method to Decimal, to support PEP 3101.
3612 - Add a timing parameter when using trace.Trace to print out
3615 - Issue #1627: httplib now ignores negative Content-Length headers.
3617 - Issue #900744: If an invalid chunked-encoding header is sent by a
3618 server, httplib will now raise IncompleteRead and close the
3619 connection instead of raising ValueError.
3621 - Issue #1492: The content type of BaseHTTPServer error messages can
3624 - Issue #1781: ConfigParser now does not let you add the "default" section
3627 - Removed uses of dict.has_key() from distutils, and uses of
3628 callable() from copy_reg.py, so the interpreter now starts up
3629 without warnings when '-3' is given. More work like this needs to
3630 be done in the rest of the stdlib.
3632 - Issue #1916: added isgenerator() and isgeneratorfunction() to
3635 - Issue #1224: Fixed bad url parsing when path begins with double
3638 - ctypes instances that are not or do not contain pointers can now be
3641 - Patch #1966: Break infinite loop in httplib when the servers
3642 implements the chunked encoding incorrectly.
3644 - Rename rational.py to fractions.py and the rational.Rational class
3645 to fractions.Fraction, to avoid the name clash with the abstract
3646 base class numbers.Rational. See discussion in issue #1682.
3648 - The pickletools module now provides an optimize() function that
3649 eliminates unused PUT opcodes from a pickle string.
3651 - Patch #2021: Allow tempfile.NamedTemporaryFile and
3652 SpooledTemporaryFile to be used in with statements by correctly
3653 supporting the context management protocol.
3655 - Patch #1979: Add rich comparisons to Decimal, and make Decimal
3656 comparisons involving a NaN follow the IEEE 754 standard.
3658 - Issue #2004: tarfile.py: Use mode 0700 for temporary directories and
3659 default permissions for missing directories.
3661 - Issue #175006: The debugger used to skip the condition of a "while"
3662 statement after the first iteration. Now it correctly steps on the
3663 expression, and breakpoints on the "while" statement are honored on
3666 - Issue #1765140: add an optional delay argument to FileHandler and
3667 its subclasses. Defaults to false (existing behaviour), but if true,
3668 defers opening the file until the first call to emit().
3670 - The pprint module now supports sets and frozensets.
3672 - Issue #1221598: add optional callbacks to ftplib.FTP's storbinary()
3673 and storlines() methods. (Contributed by Phil Schwartz)
3675 - Issue #1715: include sub-extension modules in pydoc's text output.
3677 - Issue #1836: fix an off-by-one bug in TimedRotatingHandler's
3678 rollover time calculation.
3680 - Issue #1021: fix a bug to allow basicConfig to accept NOTSET as a
3683 - Issue #932563: add LoggerAdapter convenience class to make it easier
3684 to add contextual information in logging output.
3686 - Issue #1760556: fix a bug to avoid FileHandler throwing an exception
3689 - Bug #1530959: distutils' build command now uses different build
3690 directory when building extension modules against versions of Python
3691 compiled with ``--with-pydebug``.
3693 - Issue #1555501: move plistlib from plat-mac directory to general
3696 - Issue #1269: fix a bug in pstats.add_callers() and add a unit test
3699 - Issue #1669: don't allow shutil.rmtree() to be called on a symlink
3702 - Issue #1664522: in urllib, don't read non-existing directories in
3703 ftp mode, returning a 0-byte file -- raise an IOError instead.
3705 - Issue #856047: respect the ``no_proxy`` environment variable when
3706 using the ``http_proxy`` etc. environment variables in urllib.
3708 - Issue #1178141: add a getcode() method to the addinfourls that
3709 urllib.open() returns so that you can retrieve the HTTP status code.
3711 - Issue #1003: Fix zipfile decryption check, it would fail zip files
3712 with extended local headers.
3714 - Issue #1189216: Fix the zipfile module to work on archives with
3715 headers past the 2**31 byte boundary.
3717 - Issue #1336: fix a race condition in subprocess.Popen if the garbage
3718 collector kicked in at the wrong time that would cause the process
3719 to hang when the child wrote to stderr.
3721 - Issue #1146: fix how textwrap breaks a long word that would start in
3722 the last column of a line.
3724 - Issue #1693149: trace.py --ignore-module - accept multiple
3725 comma-separated modules to be given.
3727 - Issue #1822: MIMEMultipart.is_multipart() behaves correctly for a
3728 just-created (and empty) instance. Thanks Jonathan Share.
3730 - Issue #1861: Added an attribute to the sched module which returns an
3731 ordered list of upcoming events (displayed as named tuples).
3733 - Issue #1837: The queue module now also supports a LIFO queue and a
3736 - Patch #1048820: Add insert-mode editing to curses.textpad.Textbox
3737 (patch by Stefan Wehr). Also, fix an off-by-one bug in
3740 - Issue #1831: ctypes now raises a TypeError if conflicting positional
3741 and named arguments are passed to a Structure or Union initializer.
3742 When too many positional arguments are passed, also a TypeError is
3743 raised instead of a ValueError.
3745 - Convert the internal ctypes array type cache to a WeakValueDict so
3746 that array types do not live longer than needed.
3748 - Issue #1786: pdb should use its own stdin/stdout around an exec call
3749 and when creating a recursive instance.
3751 - Issue #1698398: ZipFile.printdir() crashed because the format string
3752 expected a tuple type of length six instead of time.struct_time
3755 - Issue #1780: The Decimal constructor now accepts arbitrary leading
3756 and trailing whitespace when constructing from a string.
3757 Context.create_decimal no longer accepts trailing newlines.
3759 - Decimal.as_tuple(), difflib.find_longest_match() and inspect
3760 functions that returned a tuple now return a named tuple.
3762 - Doctest now returns results as a named tuple for readability:
3763 (0, 7) --> TestResults(failed=0, attempted=7)
3765 - Issue #846388:q re.match is interruptible now, which is particularly
3766 good for long regular expression matches.
3768 - Patch #1137: allow setting buffer_size attribute on pyexpat Parser
3769 objects to set the character data buffer size.
3771 - Issue #1757: The hash of a Decimal instance is no longer affected by
3772 the current context.
3774 - Patch #467924: add ZipFile.extract() and ZipFile.extractall() in the
3777 - Issue #1646: Make socket support the TIPC protocol.
3779 - Bug #1742: return os.curdir from os.path.relpath() if both arguments
3780 are equal instead of raising an exception.
3782 - Patch #1637: fix urlparse for URLs like 'http://x.com?arg=/foo'.
3784 - Patch #1698: allow '@' in username parsed by urlparse.py.
3786 - Issue #1735: TarFile.extractall() now correctly sets directory
3787 permissions and times.
3789 - Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a mountpoint.
3791 - Bug #1687: Fxed plistlib.py restricts <integer> to Python int when
3794 - Issue #1700: Regular expression inline flags incorrectly handle
3795 certain unicode characters.
3797 - Issue #1689: PEP 3141, numeric abstract base classes.
3799 - Tk issue #1851526: Return results from Python callbacks to Tcl as
3802 - Issue #1642: Fix segfault in ctypes when trying to delete attributes.
3804 - Issue #1727780: Support loading pickles of random.Random objects
3805 created on 32-bit systems on 64-bit systems, and vice versa. As a
3806 consequence of the change, Random pickles created by Python 2.6
3807 cannot be loaded in Python 2.5.
3809 - Issue #1455: The distutils package now supports VS 2005 and VS 2008
3810 for both the msvccompiler and cygwincompiler.
3812 - Issue #1531: tarfile.py: Read fileobj from the current offset, do
3813 not seek to the start.
3815 - Issue #1534: Added a dictionary sys.float_info with information
3816 about the internal floating point type to the sys module.
3818 - Issue #1429818: patch for trace and doctest modules so they play
3821 - doctest made a bad assumption that a package's __loader__.get_data()
3822 method used universal newlines.
3824 - Issue #1705170: contextlib.contextmanager was still swallowing
3825 StopIteration in some cases. This should no longer happen.
3827 - Issue #1292: On alpha, arm, ppc, and s390 linux systems the
3828 --with-system-ffi configure option defaults to "yes".
3830 - IN module for FreeBSD 8 is added and preexisting FreeBSD 6 and 7
3833 - Issues #1181, #1287: unsetenv() is now called when the
3834 os.environ.pop() and os.environ.clear() methods are used.
3836 - ctypes will now work correctly on 32-bit systems when Python is
3837 configured with --with-system-ffi.
3839 - Patch #1203: ctypes now does work on OS X when Python is built with
3840 --disable-toolbox-glue.
3842 - collections.deque() now supports a "maxlen" argument.
3844 - itertools.count() is no longer bounded to LONG_MAX. Formerly, it
3845 raised an OverflowError. Now, automatically shifts from ints to
3848 - Added itertools.product() which forms the Cartesian product of the
3851 - Added itertools.combinations() and itertools.permutations().
3853 - Patch #1541463: optimize performance of cgi.FieldStorage operations.
3855 - Decimal is fully updated to the latest Decimal Specification
3858 - Bug #1153: repr.repr() now doesn't require set and dictionary items
3859 to be orderable to properly represent them.
3861 - A 'c_longdouble' type was added to the ctypes module.
3863 - Bug #1709599: Run test_1565150 only if the file system is NTFS.
3865 - When encountering a password-protected robots.txt file the
3866 RobotFileParser no longer prompts interactively for a username and
3867 password (bug 813986).
3869 - TarFile.__init__() no longer fails if no name argument is passed and
3870 the fileobj argument has no usable name attribute (e.g. StringIO).
3872 - The functools module now provides 'reduce', for forward
3873 compatibility with Python 3000.
3875 - Server-side SSL support and cert verification added, by Bill
3878 - socket.ssl deprecated; use new ssl module instead.
3880 - uuid creation is now threadsafe.
3882 - EUC-KR codec now handles the cheot-ga-keut composed make-up hangul
3885 - GB18030 codec now can encode additional two-byte characters that are
3888 - Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
3890 - Bug #1704793: Return UTF-16 pair if unicodedata.lookup cannot
3891 represent the result in a single character.
3893 - Bug #978833: Close https sockets by releasing the _ssl object.
3895 - Change location of the package index to pypi.python.org/pypi
3897 - Bug #1701409: Fix a segfault in printing ctypes.c_char_p and
3898 ctypes.c_wchar_p when they point to an invalid location. As a
3899 sideeffect the representation of these instances has changed.
3901 - tarfile.py: Added "exclude" keyword argument to TarFile.add().
3903 - Bug #1734723: Fix repr.Repr() so it doesn't ignore the maxtuple
3906 - The urlopen function of urllib2 now has an optional timeout
3907 parameter (note that it actually works with HTTP, HTTPS, FTP and
3910 - In ftplib, the FTP.ntransfercmd method, when in passive mode, now
3911 uses the socket.create_connection function, using the timeout
3912 specified at connection time.
3914 - Bug #1728403: Fix a bug that CJKCodecs StreamReader hangs when it
3915 reads a file that ends with incomplete sequence and sizehint
3916 argument for .read() is specified.
3918 - Bug #1730389: Change time.strptime() to use ``\s+`` instead of
3919 ``\s*`` when matching spaces in the specified format argument.
3921 - Bugs #1668596/#1720897: distutils now copies data files even if
3922 package_dir is empty.
3924 - sha now raises a DeprecationWarning upon import.
3926 - md5 now raises a DeprecationWarning upon import.
3928 - Issue #1385: The hmac module now computes the correct hmac when
3929 using hashes with a block size other than 64 bytes (such as sha384
3932 - mimify now raises a DeprecationWarning upon import.
3934 - MimeWriter now raises a DeprecationWarning upon import.
3936 - tarfile.py: Improved unicode support. Unicode input names are now
3937 officially supported. Added "errors" argument to the TarFile class.
3939 - urllib.ftpwrapper class now accepts an optional timeout.
3941 - shlex.split() now has an optional "posix" parameter.
3943 - The posixfile module now raises a DeprecationWarning.
3945 - Remove the gopherlib module. This also leads to the removal of
3946 gopher support in urllib/urllib2.
3948 - Fix bug in marshal where bad data would cause a segfault due to lack
3949 of an infinite recursion check.
3951 - Removed plat-freebsd2 and plat-freebsd3 directories (and IN.py in
3954 - HTML-escape the plain traceback in cgitb's HTML output, to prevent
3955 the traceback inadvertently or maliciously closing the comment and
3956 injecting HTML into the error page.
3958 - The popen2 module and os.popen* are deprecated. Use the subprocess
3961 - Added an optional credentials argument to SMTPHandler, for use with
3962 SMTP servers which require authentication.
3964 - Patch #1695948: Added optional timeout parameter to SocketHandler.
3966 - Bug #1652788: Minor fix for currentframe.
3968 - Patch #1598415: Added WatchedFileHandler to better support external
3969 log file rotation using e.g. newsyslog or logrotate. This handler is
3970 only useful in Unix/Linux environments.
3972 - Bug #1706381: Specifying the SWIG option "-c++" in the setup.py file
3973 (as opposed to the command line) will now write file names ending in
3976 - As specified in RFC 2616, an HTTP response like 2xx indicates that
3977 the client's request was successfully received, understood, and
3978 accepted. Now in these cases no error is raised in urllib (issue
3981 - Bug #1290505: time.strptime's internal cache of locale information
3982 is now properly recreated when the locale is changed.
3984 - Patch #1685563: remove (don't add) duplicate paths in
3985 distutils.MSVCCompiler.
3987 - Added a timeout parameter to the constructor of other protocols
3988 (telnetlib, ftplib, smtplib and poplib). This is second part of the
3989 work started with create_connection() and timeout in httplib, and
3990 closes patch #723312.
3992 - Patch #1676823: Added create_connection() to socket.py, which may be
3993 called with a timeout, and use it from httplib (whose HTTPConnection
3994 and HTTPSConnection now accept an optional timeout).
3996 - Bug #978833: Revert r50844, as it broke _socketobject.dup.
3998 - Bug #1675967: re patterns pickled with Python 2.4 and earlier can
3999 now be unpickled with Python 2.5 and newer.
4001 - Patch #1630118: add a SpooledTemporaryFile class to tempfile.py.
4003 - Patch #1273829: os.walk() now has a "followlinks" parameter. If set
4004 to True (which is not the default), it visits symlinks pointing to
4007 - Bug #1681228: the webbrowser module now correctly uses the default
4008 GNOME or KDE browser, depending on whether there is a session of one
4009 of those present. Also, it tries the Windows default browser before
4010 trying Mozilla variants.
4012 - Patch #1339796: add a relpath() function to os.path.
4014 - Patch #1681153: the wave module now closes a file object it opened if
4015 initialization failed.
4017 - Bug #767111: fix long-standing bug in urllib which caused an
4018 AttributeError instead of an IOError when the server's response
4019 didn't contain a valid HTTP status line.
4021 - Patch #957650: "%var%" environment variable references are now
4022 properly expanded in ntpath.expandvars(), also "~user" home
4023 directory references are recognized and handled on Windows.
4025 - Patch #1429539: pdb now correctly initializes the __main__ module
4026 for the debugged script, which means that imports from __main__ work
4029 - The nonobvious commands.getstatus() function is now deprecated.
4031 - Patch #1393667: pdb now has a "run" command which restarts the
4032 debugged Python program, optionally with different arguments.
4034 - Patch #1649190: Adding support for _Bool to ctypes as c_bool.
4036 - Patch #1530482: add pydoc.render_doc() which returns the
4037 documentation for a thing instead of paging it to stdout, which
4040 - Patch #1533909: the timeit module now accepts callables in addition
4041 to strings for the code to time and the setup code. Also added two
4042 convenience functions for instantiating a Timer and calling its
4045 - Patch #1537850: tempfile.NamedTemporaryFile now has a "delete"
4046 parameter which can be set to False to prevent the default
4047 delete-on-close behavior.
4049 - Patch #1581073: add a flag to textwrap that prevents the dropping of
4050 whitespace while wrapping.
4052 - Patch #1603688: ConfigParser.SafeConfigParser now checks values that
4053 are set for invalid interpolation sequences that would lead to
4054 errors on reading back those values.
4056 - Added support for the POSIX.1-2001 (pax) format to
4057 tarfile.py. Extended and cleaned up the test suite. Added a new
4060 - Patch #1449244: Support Unicode strings in
4061 email.message.Message.{set_charset,get_content_charset}.
4063 - Patch #1542681: add entries for "with", "as" and "CONTEXTMANAGERS"
4064 to pydoc's help keywords.
4066 - Patch #1555098: use str.join() instead of repeated string
4067 concatenation in robotparser.
4069 - Patch #1635454: the csv.DictWriter class now includes the offending
4070 field names in its exception message if you try to write a record
4071 with a dictionary containing fields not in the CSV field names list.
4073 - Patch #1668100: urllib2 now correctly raises URLError instead of
4074 OSError if accessing a local file via the file:// protocol fails.
4076 - Patch #1677862: Require a space or tab after import in .pth files.
4078 - Patch #1192590: Fix pdb's "ignore" and "condition" commands so they
4079 trap the IndexError caused by passing in an invalid breakpoint
4082 - Patch #1599845: Add an option to disable the implicit calls to
4083 server_bind() and server_activate() in the constructors for
4084 TCPServer, SimpleXMLRPCServer and DocXMLRPCServer.
4086 - Bug #1531963: Make SocketServer.TCPServer's server_address always be
4087 equal to calling getsockname() on the server's socket. Fixed by
4090 - Patch #742598: Add .timeout attribute to SocketServer that calls
4091 .handle_timeout() when no requests are received.
4093 - Bug #1651235: When a tuple was passed to a ctypes function call,
4094 Python would crash instead of raising an error.
4096 - Bug #1646630: ctypes.string_at(buf, 0) and ctypes.wstring_at(buf, 0)
4097 returned string up to the first NUL character.
4099 - Patch #957003: Implement smtplib.LMTP.
4101 - Patch #1481079: add support for HTTP_REFERER to CGIHTTPServer.
4103 - Patch #1675424: Added tests for uncovered code in the zipfile
4104 module. The KeyError raised by Zipfile.getinfo for nonexistent
4105 names now has a descriptive message.
4107 - Bug #1115886: os.path.splitext('.cshrc') gives now ('.cshrc', '').
4109 - unittest now verifies more of its assumptions. In particular,
4110 TestCase and TestSuite subclasses (not instances) are no longer
4111 accepted in TestSuite.addTest(). This should cause no
4112 incompatibility since it never made sense with ordinary subclasses
4113 -- the failure just occurred later, with a more cumbersome
4116 - Patch #787789: allow to pass custom TestRunner instances to
4117 unittest's main() function.
4119 - Patches #1550273, #1550272: fix a few bugs in unittest and add a
4120 comprehensive test suite for the module.
4122 - Patch #1001604: glob.glob() now returns unicode filenames if it was
4123 given a unicode argument and os.listdir() returns unicode filenames.
4125 - Patch #1673619: setup.py identifies extension modules it doesn't
4126 know how to build and those it knows how to build but that fail to
4129 - Patch #912410: Replace HTML entity references for attribute values
4132 - Patch #1663234: you can now run doctest on test files and modules
4133 using "python -m doctest [-v] filename ...".
4135 - Patch #1121142: Implement ZipFile.open.
4137 - Taught setup.py how to locate Berkeley DB on Macs using MacPorts.
4139 - Added heapq.merge() for merging sorted input streams.
4141 - Added collections.namedtuple() for assigning field names to tuples.
4143 - Added itertools.izip_longest().
4145 - Have the encoding package's search function dynamically import using
4146 absolute import semantics.
4148 - Patch #1647484: Renamed GzipFile's filename attribute to name.
4150 - Patch #1517891: Mode 'a' for ZipFile now creates the file if it
4153 - Patch #698833: Support file decryption in zipfile.
4155 - Patch #685268: Consider a package's __path__ in imputil.
4157 - Patch #1463026: Support default namespace in XMLGenerator.
4159 - Patch #1571379: Make trace's --ignore-dir facility work in the face
4160 of relative directory names.
4162 - Bug #1600860: Search for shared python library in LIBDIR, not
4163 lib/python/config, on "linux" and "gnu" systems.
4165 - Patch #1652681: tarfile.py: create nonexistent files in append mode
4166 and allow appending to empty files.
4168 - Bug #1124861: Automatically create pipes if GetStdHandle fails in
4171 - Patch #1634778: add missing encoding aliases for iso8859_15 and
4174 - Patch #1638243: the compiler package is now able to correctly
4175 compile a with statement; previously, executing code containing a
4176 with statement compiled by the compiler package crashed the
4179 - Bug #1643943: Fix time.strptime's support for the %U directive.
4181 - Patch #1507247: tarfile.py: use current umask for intermediate
4184 - Patch #1627441: close sockets properly in urllib2.
4186 - Bug #494589: make ntpath.expandvars behave according to its
4189 - Changed platform module API python_version_tuple() to actually
4190 return a tuple (it used to return a list).
4192 - Added new platform module APIs python_branch(), python_revision(),
4193 python_implementation() and linux_distribution().
4195 - Added support for IronPython and Jython to the platform module.
4197 - The sets module has been deprecated. Use the built-in set/frozenset
4200 - Bug #1610795: make ctypes.util.find_library work on BSD systems.
4202 - Fixes for 64-bit Windows: In ctypes.wintypes, correct the
4203 definitions of HANDLE, WPARAM, LPARAM data types. Make
4204 parameterless foreign function calls work.
4206 - The version number of the ctypes package changed to "1.1.0".
4208 - Bug #1627575: logging: Added _open() method to FileHandler which can
4209 be used to reopen files. The FileHandler instance now saves the
4210 encoding (which can be None) in an attribute called "encoding".
4212 - Bug #411881: logging.handlers: bare except clause removed from
4213 SMTPHandler.emit. Now, only ImportError is trapped.
4215 - Bug #411881: logging.handlers: bare except clause removed from
4216 SocketHandler.createSocket. Now, only socket.error is trapped.
4218 - Bug #411881: logging: bare except clause removed from
4219 LogRecord.__init__. Now, only ValueError, TypeError and
4220 AttributeError are trapped.
4222 - Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj
4225 - Patch #1182394 from Shane Holloway: speed up HMAC.hexdigest.
4227 - Patch #1262036: Prevent TarFiles from being added to themselves
4228 under certain conditions.
4230 - Patch #1230446: tarfile.py: fix ExFileObject so that read() and
4231 tell() work correctly together with readline().
4233 - Patch #1484695: The tarfile module now raises a HeaderError
4234 exception if a buffer given to frombuf() is invalid.
4236 - Bug #1503765: Fix a problem in logging.config with spaces in comma-
4237 separated lists read from logging config files.
4239 - Patch #1604907: Fix problems in logging.handlers caused at logging
4240 shutdown when syslog handlers fail to initialize because of syslogd
4243 - Patch #1608267: fix a race condition in os.makedirs() if the
4244 directory to be created is already there.
4246 - Patch #1610437: fix a tarfile bug with long filename headers.
4248 - Patch #1371075: Make ConfigParser accept optional dict type for
4249 ordering, sorting, etc.
4251 - Bug #1563807: _ctypes built on AIX fails with ld ffi error.
4253 - Bug #1598620: A ctypes Structure cannot contain itself.
4255 - Patch #1070046: Marshal new-style objects like InstanceType in
4258 - cStringIO.truncate(-1) now raises an IOError, like StringIO and
4261 - Patch #1472877: Fix Tix subwidget name resolution.
4263 - Patch #1594554: Always close a tkSimpleDialog on ok(), even if an
4266 - Patch #1538878: Don't make tkSimpleDialog dialogs transient if the
4267 parent window is withdrawn.
4269 - Bug #1597824: return the registered function from atexit.register()
4270 to facilitate usage as a decorator.
4272 - Patch #1360200: Use unmangled_version RPM spec field to deal with
4275 - Patch #1359217: Process 2xx response in an ftplib transfer that
4276 precedes an 1xx response.
4278 - Patch #1355023: support whence argument for GzipFile.seek.
4280 - Patch #1065257: Support passing open files as body in
4281 HTTPConnection.request().
4283 - Bug #1569790: mailbox.py: Maildir.get_folder() and MH.get_folder()
4284 weren't passing the message factory on to newly created Maildir/MH
4287 - Patch #1514543: mailbox.py: In the Maildir class, report errors if
4288 there's a filename clash instead of possibly losing a message.
4289 (Patch by David Watson.)
4291 - Patch #1514544: Try to ensure that messages/indexes have been
4292 physically written to disk after calling .flush() or
4293 .close(). (Patch by David Watson.)
4295 - Patch #1592250: Add elide argument to Tkinter.Text.search.
4297 - Patch #838546: Make terminal become controlling in pty.fork().
4299 - Patch #1351744: Add askyesnocancel helper for tkMessageBox.
4301 - Patch #1060577: Extract list of RPM files from spec file in
4304 - Bug #1586613: fix zlib and bz2 codecs' incremental en/decoders.
4306 - Patch #1583880: fix tarfile's problems with long names and posix/
4309 - Bug #1586448: the compiler module now emits the same bytecode for
4310 list comprehensions as the builtin compiler, using the LIST_APPEND
4313 - Fix codecs.EncodedFile which did not use file_encoding in 2.5.0, and
4314 fix all codecs file wrappers to work correctly with the "with"
4315 statement (bug #1586513).
4317 - Lib/modulefinder.py now handles absolute and relative imports
4320 - Patch #1567274: Support SMTP over TLS.
4322 - Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that ctypes
4323 isn't considered as requiring executable stacks.
4325 - ctypes callback functions only support 'fundamental' data types as
4326 result type. Raise an error when something else is used. This is a
4327 partial fix for Bug #1574584.
4329 - Fix turtle so that time.sleep is imported for the entire library.
4330 Allows the demo2 function to be executed on its own instead of only
4331 when the module is run as a script.
4333 - Bug #813342: Start the IDLE subprocess with -Qnew if the parent is
4334 started with that option.
4336 - Bug #1565150: Fix subsecond processing for os.utime on Windows.
4338 - Support for MSVC 8 was added to bdist_wininst.
4340 - Bug #1446043: correctly raise a LookupError if an encoding name
4341 given to encodings.search_function() contains a dot.
4343 - Bug #1560617: in pyclbr, return full module name not only for
4344 classes, but also for functions.
4346 - Bug #1457823: cgi.(Sv)FormContentDict's constructor now takes
4347 keep_blank_values and strict_parsing keyword arguments.
4349 - Bug #1566602: correct failure of posixpath unittest when $HOME ends
4352 - Bug #1565661: in webbrowser, split() the command for the default
4353 GNOME browser in case it is a command with args.
4355 - Made the error message for time.strptime when the data and
4356 format do match be more clear.
4358 - Fix a bug in traceback.format_exception_only() that led to an error
4359 being raised when print_exc() was called without an exception set.
4360 In version 2.4, this printed "None", restored that behavior.
4362 - Make webbrowser.BackgroundBrowser usable in Windows (it wasn't
4363 because the close_fds arg to subprocess.Popen is not supported).
4365 - Reverted patch #1504333 to sgmllib because it introduced an infinite
4368 - Patch #1553314: Fix the inspect.py slowdown that was hurting IPython
4369 & SAGE by adding smarter caching in inspect.getmodule()
4371 - Fix missing import of the types module in logging.config.
4373 - Patch #1550886: Fix decimal module context management implementation
4374 to match the localcontext() example from PEP 343.
4376 - Bug #1545341: The 'classifier' keyword argument to the Distutils
4377 setup() function now accepts tuples as well as lists.
4379 - Bug #1541863: uuid.uuid1 failed to generate unique identifiers on
4380 systems with low clock resolution.
4382 - Bug #1531862: Do not close standard file descriptors in subprocess.
4384 - idle: Honor the "Cancel" action in the save dialog (Debian bug
4387 - Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
4388 the first chunk fed to the decoder started with a BOM, but was
4389 longer than 3 bytes.
4391 - The implementation of UnicodeError objects has been simplified
4392 (start and end attributes are now stored directly as Py_ssize_t
4395 - Issue #829951: In the smtplib module, SMTP.starttls() now complies
4396 with RFC 3207 and forgets any knowledge obtained from the server not
4397 obtained from the TLS negotiation itself. Patch contributed by Bill
4400 - Issue #1339: The smtplib.SMTP class has been refactored a bit such
4401 that the SMTP.starttls() caller no longer needs to call ehlo()
4402 beforehand. SMTP.starttls() now raises an exception of the server
4403 does not claim to support starttls. Adds the
4404 SMTP.ehlo_or_helo_if_needed() method. Patch contributed by Bill
4407 - Patch #1089358: Add signal.siginterrupt, a wrapper around
4413 - Patch #1657: added select.epoll and select.kqueue.
4415 - Patch #1506171: added operator.methodcaller().
4417 - Patch #1826: operator.attrgetter() now supports dotted attribute paths.
4419 - Patch #1957: syslogmodule: Release GIL when calling syslog(3).
4421 - Bug #2112: mmap.error is now a subclass of EnvironmentError and not
4422 a direct EnvironmentError.
4424 - Bug #2111: mmap segfaults when trying to write a block opened with
4427 - Bug #2063: correct order of utime and stime in os.times() result on
4430 - Patch #1736: Fix file name handling of _msi.FCICreate.
4432 - Updated ``big5hkscs`` codec to the HKSCS revision of 2004.
4434 - Issue #1940: make it possible to use curses.filter() before
4435 curses.initscr() as the documentation says.
4437 - Backport of _fileio module from Python 3.0.
4439 - Patch #1087741: mmap.mmap is now a class, not a factory function. It
4440 is also subclassable now.
4442 - Patch #1648: added ``sys.getprofile()`` and ``sys.gettrace()``.
4444 - Patch #1663329: added ``os.closerange()`` function to quickly close
4445 a range of file descriptors without considering errors.
4447 - Patch #976880: ``mmap`` objects now have an ``rfind`` method that
4448 works as expected. ``mmap.find`` also takes an optional ``end``
4451 - _winreg's HKEY object has gained __enter__ and __exit__ methods to
4452 support the context manager protocol. The _winreg module also
4453 gained a new function ``ExpandEnvironmentStrings`` to expand
4456 - itertools.starmap() now accepts any iterable input. Previously, it
4457 required the function inputs to be tuples.
4459 - itertools.chain() now has an alternate constructor,
4460 chain.from_iterable().
4462 - Issue #1646: Make socket support TIPC. The socket module now has
4463 support for TIPC under Linux, see http://tipc.sf.net/ for more
4466 - Added interface for Windows' WSAIoctl to socket object and added an
4467 example for a simple network sniffer.
4469 - Bug #1301: Bad assert in _tkinter fixed.
4471 - Added bdist_wininst executable for VS 2008.
4473 - Bug #1604: collections.deque.__init__(iterable) now clears any prior
4474 contents before adding elements from the iterable. This fix brings
4475 the behavior into line with that for list.__init__().
4477 - Added wide char functions to msvcrt module: getwch, getwche, putwch
4478 and ungetwch. The functions accept or return unicode.
4480 - os.access now returns True on Windows for any existing directory.
4482 - Added warnpy3k function to the warnings module.
4484 - Marshal.dumps() now expects exact type matches for int, long, float,
4485 complex, tuple, list, dict, set, and frozenset. Formerly, it would
4486 silently miscode subclasses of those types. Now, it raises a
4489 - Patch #1388440: Add set_completion_display_matches_hook and
4490 get_completion_type to readline.
4492 - Bug #1649098: Avoid declaration of zero-sized array declaration in
4495 - Removed the rgbimg module; been deprecated since Python 2.5.
4497 - Bug #1721309: prevent bsddb module from freeing random memory.
4499 - Bug #1233: fix bsddb.dbshelve.DBShelf append method to work as
4500 intended for RECNO databases.
4502 - pybsddb.sf.net Bug #477182: Load the database flags at database open
4503 time so that opening a database previously created with the DB_DUP
4504 or DB_DUPSORT flag set will keep the proper behavior on subsequent
4505 opens. Specifically: dictionary assignment to a DB object will
4506 replace all values for a given key when the database allows
4507 duplicate values. DB users should use DB.put(k, v) when they want
4508 to store duplicates; not DB[k] = v.
4510 - Add the bsddb.db.DBEnv.lock_id_free method.
4512 - Bug #1686475: Support stat'ing open files on Windows again.
4514 - Patch #1185447: binascii.b2a_qp() now correctly quotes binary
4515 characters with ASCII value less than 32. Also, it correctly quotes
4516 dots only if they occur on a single line, as opposed to the previous
4517 behavior of quoting dots if they are the second character of any
4520 - Bug #1622896: fix a rare corner case where the bz2 module raised an
4521 error in spite of a succesful compression.
4523 - Patch #1654417: make operator.{get,set,del}slice use the full range
4526 - Patch #1646728: datetime.fromtimestamp fails with negative
4527 fractional times. With unittest.
4529 - Patch #1490190: posixmodule now includes os.chflags() and
4530 os.lchflags() functions on platforms where the underlying system
4531 calls are available.
4533 - Patch #1494140: Add documentation for the new struct.Struct object.
4535 - Patch #1432399: Support the HCI protocol for bluetooth sockets
4537 - Patch #1657276: Make NETLINK_DNRTMSG conditional.
4539 - Bug #1653736: Complain about keyword arguments to time.isoformat.
4541 - Bug #1486663: don't reject keyword arguments for subclasses of
4544 - Patch #1610575: The struct module now supports the 't' code, for C99
4547 - Patch #1635058: ensure that htonl and friends never accept or return
4548 negative numbers, per the underlying C implementation.
4550 - Patch #1544279: Improve thread-safety of the socket module by moving
4551 the sock_addr_t storage out of the socket object.
4553 - Patch #1019808: fix bug that causes an incorrect error to be
4554 returned when a socket timeout is set and a connection attempt
4557 - Speed up function calls into the math module.
4559 - Bug #1588217: don't parse "= " as a soft line break in binascii's
4560 a2b_qp() function, instead leave it in the string as quopri.decode()
4563 - Bug #1599782: Fix segfault on bsddb.db.DB().type().
4565 - Bug #1567666: Emulate GetFileAttributesExA for Win95.
4567 - Patch #1576166: Support os.utime for directories on Windows NT+.
4569 - Patch #1572724: fix typo ('=' instead of '==') in _msi.c.
4571 - Bug #1572832: fix a bug in ISO-2022 codecs which may cause segfault
4572 when encoding non-BMP unicode characters.
4574 - Bug #1556784: allow format strings longer than 127 characters in
4575 datetime's strftime function.
4577 - Fix itertools.count(n) to work with negative numbers again.
4579 - RLIMIT_SBSIZE was added to the resource module where available.
4581 - Bug #1551427: fix a wrong NULL pointer check in the win32 version of
4584 - Bug #1548092: fix curses.tparm seg fault on invalid input.
4586 - Patch #1114: fix curses module compilation on 64-bit AIX, & possibly
4587 other 64-bit LP64 platforms where attr_t is not the same size as a
4588 long. (Contributed by Luke Mewburn.)
4590 - Bug #1550714: fix SystemError from itertools.tee on negative value
4593 - Fixed a few bugs on cjkcodecs:
4594 - gbk and gb18030 codec now handle U+30FB KATAKANA MIDDLE DOT
4596 - iso2022_jp_2 codec now encodes into G0 for KS X 1001, GB2312
4597 codepoints to conform the standard.
4598 - iso2022_jp_3 and iso2022_jp_2004 codec can encode JIS X 0213:2
4601 - Bug #1552726: in readline.c, avoid repeatedly polling in interactive
4602 mode by only placing a timeout on the select() if an input hook has
4603 been defined. This prevents an interactive Python from waking up 10
4604 times per second. Patch by Richard Boulton.
4606 - fixed a bug with bsddb.DB.stat: the flags and txn keyword arguments
4609 - Added support for linking the bsddb module against BerkeleyDB 4.5.x,
4612 - Bug #1633621: if curses.resizeterm() or curses.resize_term() is
4613 called, update _curses.LINES, _curses.COLS, curses.LINES and
4616 - Fix an off-by-one bug in locale.strxfrm().
4618 - Fix libffi configure for hppa*-*-linux* | parisc*-*-linux*.
4620 - Build using system ffi library on arm*-linux*.
4622 - Bug #1372: zlibmodule.c: int overflow in PyZlib_decompress
4624 - bsddb module: Fix memory leak when using database cursors on
4625 databases without a DBEnv.
4627 - The sqlite3 module was updated to pysqlite 2.4.1.
4632 - Refactor test_logging to use unittest.
4634 - Refactor test_profile and test_cprofile to use the same code to
4637 - Make test_runpy reentrant by fixing _check_module to clear out any
4638 module being tested. Was causing an error by __import__ doing a
4639 reload on the second run and thus suppressing bytecode recreation.
4641 - Capture socket connection resets and timeouts in test_socket_ssl and
4642 test_urllib2net and raise test.test_support.ResourceDenied.
4644 - Patch #1559413: Fix test_cmd_line if sys.executable contains a
4647 - Added test.test_support.TransientResource which is a context manager
4648 to surround calls to resources that are not guaranteed to work even
4649 if test.test_support.requires says that the resource should exist.
4651 - Added a test for slicing of an exception.
4653 - Added test.test_support.EnvironmentVarGuard. It's a class that
4654 provides a context manager so that one can temporarily set or unset
4655 environment variables.
4657 - Added some tests for modulefinder.
4659 - Converted test_imp to use unittest.
4661 - Fix bsddb test_basics.test06_Transactions to check the version
4664 - test.test_support.catch_warning is a new context manager that can be
4665 used to catch the warnings issued by the warning framework.
4670 - Tools/scripts/reindent.py now creates the backup file using
4671 shutil.copy to preserve user/group and permissions. Added also a
4672 --nobackup option to not create the backup if the user is concerned
4673 regarding this. Check issue 1050828 for more details.
4675 - Tools/scripts/win_add2path.py was added. The simple script modifes
4676 the PATH environment var of the HKCU tree and adds the python bin
4677 and script directory.
4679 - Tools/18n/pygettext.py was added to the list of scripts installed by
4680 Tools/scripts/setup.py (tracker item 642309).
4682 - Added IronPython and Jython support to pybench (part of which was
4685 - Made some minor changes to pybench output to allow the user to see
4686 which Python version is running pybench.
4688 - Added support for the new platform module feature
4689 platform.python_implementation(); this will now be saved in the
4696 - RFE #1765140: Updated documentation on FileHandler and subclasses to
4697 include new optional delay argument.
4699 - Bug #932563: Added section on getting contextual information into
4700 logging output, and added documentation for the new LoggerAdapter
4703 - Bug #1295: Added information about caching of formatted exception
4704 information in the LogRecord by Formatter.format().
4706 - Bug #1637365: add subsection about "__name__ == __main__" to the
4709 - Patch #1698768: updated the "using Python on the Mac" intro.
4711 - Bug #1569057: Document that calling file.next() when the file is
4712 open for writing is undefined.
4714 - Patch #1489771: the syntax rules in Python Reference Manual were
4715 updated to reflect the current Python syntax.
4717 - Patch #1686451: Fix return type for
4718 PySequence_{Count,Index,Fast_GET_SIZE}.
4720 - Patch #1679379: add documentation for fnmatch.translate().
4722 - Bug #1629566: clarify the docs on the return values of parsedate()
4723 and parsedate_tz() in email.utils and rfc822.
4725 - Patch #1671450: add a section about subclassing builtin types to the
4726 "extending and embedding" tutorial.
4728 - Bug #1629125: fix wrong data type (int -> Py_ssize_t) in PyDict_Next
4731 - Bug #1565919: document set types in the Language Reference.
4733 - Bug #1546052: clarify that PyString_FromString(AndSize) copies the
4734 string pointed to by its parameter.
4736 - Bug #1566663: remove obsolete example from datetime docs.
4738 - Bug #1541682: Fix example in the "Refcount details" API docs.
4739 Additionally, remove a faulty example showing PySequence_SetItem
4740 applied to a newly created list object and add notes that this isn't
4747 - Patch #1552024: add decorator support to unparse.py demo script.
4749 - Make auto-generated python.vim file list built-ins and exceptions in
4750 alphatbetical order. Makes output more deterministic and easier to
4751 tell if the file is stale or not.
4753 - Bug #1546372: Fixed small bugglet in pybench that caused a missing
4754 file not to get reported properly.
4760 - Have the search path for building extensions follow the declared
4761 order in $CPPFLAGS and $LDFLAGS when adding directories from those
4762 environment variables.
4764 - Bug #1983: Added a check to pyport to verify that sizeof(pid_t) is
4765 smaller or equal sizeof(long).
4767 - Bug #1234: Fixed semaphore errors on AIX 5.2
4769 - Issue #1726: Remove Python/atof.c from PCBuild/pythoncore.vcproj.
4771 - Removed PCbuild8/ directory and added a new build directory for VS
4772 2005 based on the VS 2008 build directory to PC/VS8.0. The script
4773 PCbuild/vs8to9.py was added to sync changes from PCbuild to
4776 - Moved PCbuild/ directory for VS 2003 to PC/VS7.1 and renamed
4777 PCBuild9/ directory to PCBuild/.
4779 - Bug #1699: Define _BSD_SOURCE only on OpenBSD.
4781 - Bug #1608: use -fwrapv when GCC supports it. This is important,
4782 newer GCC versions may optimize away overflow buffer overflow checks
4783 without this option!
4785 - Patch #1418: Make the AC_REPLACE_FUNCS object files actually work.
4787 - Add a FAST_LOOPS build option that speeds-up looping by trading away
4788 periodic threadstate and signal checking in tight loops. By
4789 default, this option is turned-off. It should only be enabled in
4790 debugged, performance critical applications.
4792 - Patch #786737: Allow building in a tree of symlinks pointing to a
4795 - Bug #1737210: Change Manufacturer of Windows installer to PSF.
4797 - Bug #1746880: Correctly install DLLs into system32 folder on Win64.
4799 - Define _BSD_SOURCE, to get access to POSIX extensions on OpenBSD
4802 - Stop supporting AtheOS and cause a build error in configure for the
4805 - Bug #1655392: don't add -L/usr/lib/pythonX.Y/config to the LDFLAGS
4806 returned by python-config if Python was built with --enable-shared
4807 because that prevented the shared library from being used.
4809 - Patch #1569798: fix a bug in distutils when building Python from a
4810 directory within sys.exec_prefix.
4812 - Bug #1675511: Use -Kpic instead of -xcode=pic32 on Solaris/x86.
4814 - Disable _XOPEN_SOURCE on NetBSD 1.x.
4816 - configure now checks whether gcc supports the PyArg_ParseTuple
4819 - Bug #1578513: Cross compilation was broken by a change to configure.
4820 Repair so that it's back to how it was in 2.4.3.
4822 - Patch #1576954: Update VC6 build directory; remove redundant files
4825 - Bug #1568842: Fix test for uintptr_t.
4827 - Patch #1540470: for OpenBSD 4.0.
4829 - Fix build failure on kfreebsd and on the hurd.
4831 - Fix the build of the library reference in info format.
4833 - Allow Emacs 22 for building the documentation in info format.
4835 - Makefile.pre.in(buildbottest): Run an optional script
4836 pybuildbot.identify to include some information about the build
4843 - Unified naming convention for free lists and their limits. All free
4844 lists in Object/ are named ``free_list``, the counter ``numfree``
4845 and the upper limit is a macro ``PyName_MAXFREELIST`` inside an
4848 - ``PySet_Add()`` can now modify a newly created frozenset. Similarly
4849 to ``PyTuple_SetItem``, it can be used to populate a brand new
4850 frozenset; but it does not steal a reference to the added item.
4852 - Added ``PySet_Check()`` and ``PyFrozenSet_Check()`` to the set API.
4854 - Backport of PyUnicode_FromString(), _FromStringAndSize(), _Format
4855 and _FormatV from Python 3.0. Made PyLong_AsSsize_t and
4856 PyLong_FromSsize_t public functions.
4858 - Patch #1720595: add T_BOOL to the range of structmember types.
4860 - Issue #1534: Added ``PyFloat_GetMax()``, ``PyFloat_GetMin()`` and
4861 ``PyFloat_GetInfo()`` to the float API.
4863 - Issue #1521: On 64bit platforms, using PyArgs_ParseTuple with the t#
4864 of w# format code incorrectly truncated the length to an int, even
4865 when PY_SSIZE_T_CLEAN is set. The str.decode method used to return
4866 incorrect results with huge strings.
4868 - Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
4869 Py_TYPE and Py_REFCNT.
4871 - PEP 3123: Provide forward compatibility with Python 3.0, while
4872 keeping backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size,
4873 and PyVarObject_HEAD_INIT.
4875 - Py_ssize_t fields work in structmember when HAVE_LONG_LONG is not
4878 - Patch #1733960: Allow T_LONGLONG to accept ints.
4880 - T_PYSSIZET can now be used in PyMemberDef lists for Py_ssize_t members.
4882 - Added a new API function ``PyImport_ImportModuleNoBlock``.
4884 - Bug #1637022: Prefix AST symbols with _Py_.
4886 - Fix some leftovers from the conversion from int to Py_ssize_t
4887 (relevant to strings and sequences of more than 2**31 items).
4889 - Make _PyGILState_NoteThreadState() static, it was not used anywhere
4890 outside of pystate.c and should not be necessary.
4892 - ``PyImport_Import`` and ``PyImport_ImportModule`` now always do
4893 absolute imports. In earlier versions they might have used relative
4894 imports under some conditions.
4896 - Added case insensitive comparison methods ``PyOS_stricmp(char*,
4897 char*)`` and ``PyOS_strnicmp(char*, char*, Py_ssize_t)``.
4899 - Bug #1542693: remove semi-colon at end of PyImport_ImportModuleEx
4900 macro so it can be used as an expression.
4906 - Patch #1706: Drop support for Win9x, WinME and NT4. Python now
4907 requires Windows 2000 or greater. The _WINVER and NTDDI_VERSION
4908 macros are set to Win2k for x86/32bit builds and WinXP for AMD64
4911 - Conditionalize definition of _CRT_SECURE_NO_DEPRECATE and
4912 _CRT_NONSTDC_NO_DEPRECATE.
4914 - Bug #1216: Restore support for Visual Studio 2002.
4920 - cfmfile now raises a DeprecationWarning.
4922 - buildtools now raises a DeprecationWarning.
4924 - Removed the macfs module. It had been deprecated since Python 2.5.
4925 This lead to the deprecation of macostools.touched() as it relied
4926 solely on macfs and was a no-op under OS X.
4930 **(For information about older versions, consult the HISTORY file.)**