blob: a52e37aa0eef21150cb914b2391c2eb55154b451 [file] [log] [blame]
Georg Brandlab6f2f62009-03-31 04:16:10 +00001+++++++++++
2Python News
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00003+++++++++++
4
Anthony Baxterb0c66302004-11-04 05:23:17 +00005(editors: check NEWS.help for information about editing NEWS using ReST.)
6
Benjamin Petersond1735892009-03-07 18:46:21 +00007What's New in Python 3.1 alpha 2?
8=================================
9
10*Release date: XXX*
11
12Core and Builtins
13-----------------
14
Georg Brandlab6f2f62009-03-31 04:16:10 +000015- Fix a segfault when running test_exceptions with coverage, caused by
16 insufficient checks in accessors of Exception.__context__.
17
Guido van Rossum0ad59d42009-03-30 22:01:35 +000018- Issue #5604: non-ASCII characters in module name passed to
19 imp.find_module() were converted to UTF-8 while the path is
20 converted to the default filesystem encoding, causing nonsense.
21
Benjamin Peterson09832742009-03-26 17:15:46 +000022- Issue #5126: str.isprintable() returned False for space characters.
23
Ronald Oussorenfa1fcd12009-03-30 23:16:10 +000024- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
25 the end sys.path, for compatibility with the system install of Python.
26
Antoine Pitrou3a652b12009-03-23 18:52:06 +000027- Issue #4688: Add a heuristic so that tuples and dicts containing only
28 untrackable objects are not tracked by the garbage collector. This can
29 reduce the size of collections and therefore the garbage collection overhead
30 on long-running programs, depending on their particular use of datatypes.
31
Mark Dickinson17e4fdd2009-03-23 18:44:57 +000032- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
33 improve its performance. Long divisions and remainder operations
34 are now between 50% and 150% faster.
35
Mark Dickinsonbd792642009-03-18 20:06:12 +000036- Issue #4258: Make it possible to use base 2**30 instead of base
37 2**15 for the internal representation of integers, for performance
38 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
39 --enable-big-digits option to configure, which overrides the
40 default. Add sys.int_info structseq to provide information about
41 the internal format.
42
Mark Dickinson081dfee2009-03-18 14:47:41 +000043- Issue #4474: PyUnicode_FromWideChar now converts characters outside
44 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
45 and sizeof(Py_UNICODE) == 2.
46
Eric Smith8ec90442009-03-14 12:29:34 +000047- Issue #5237: Allow auto-numbered fields in str.format(). For
48 example: '{} {}'.format(1, 2) == '1 2'.
49
Antoine Pitrou652e7072009-03-13 19:25:20 +000050- Issue #5392: when a very low recursion limit was set, the interpreter would
51 abort with a fatal error after the recursion limit was hit twice.
52
Benjamin Petersond1735892009-03-07 18:46:21 +000053Library
54-------
55
Jesse Noller32d68c22009-03-31 18:48:42 +000056- Issue #5400: Added patch for multiprocessing on netbsd compilation/support
57
Hirokazu Yamamoto16caab02009-03-31 13:44:06 +000058- Issue #5387: Fixed mmap.move crash by integer overflow.
59
Jesse Nollerf8d00852009-03-31 03:25:07 +000060- Issue #5261: Patch multiprocessing's semaphore.c to support context
61 manager use: "with multiprocessing.Lock()" works now.
62
Brett Cannon7f6b4f82009-03-30 21:30:26 +000063- Issue #5236: Change time.strptime() to only take strings. Didn't work with
64 bytes already but the failure was non-obvious.
65
Jesse Noller7af4ef82009-03-30 16:47:15 +000066- Issue #5177: Multiprocessing's SocketListener class now uses
67 socket.SO_REUSEADDR on all connections so that the user no longer needs
68 to wait 120 seconds for the socket to expire.
69
Benjamin Peterson48e24782009-03-29 13:02:52 +000070- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
71
Antoine Pitrou66994e12009-03-29 00:45:26 +000072- Issue #1174606: Calling read() without arguments of an unbounded file
73 (typically /dev/zero under Unix) could crash the interpreter.
74
Benjamin Peterson59406a92009-03-26 17:10:29 +000075- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
76 io.BufferedRandom have been deprecated for removal in Python 3.2.
77
Lars Gustäbel42e00912009-03-22 20:34:29 +000078- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
79 forever on incomplete input. That caused tarfile.open() to hang when used
80 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
81 partial bzip2 compressed data.
82
Mark Dickinson79f52032009-03-17 23:12:51 +000083- Issue #2110: Add support for thousands separator and 'n' type
84 specifier to Decimal.__format__
85
Mark Dickinson9c59fe02009-03-17 18:15:08 +000086- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
87 '>' alignment characters.
88
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +000089- The error detection code in FileIO.close() could fail to reflect the `errno`
90 value, and report it as -1 instead.
91
Antoine Pitroua28fcfd2009-03-13 23:42:55 +000092- Issue #5016: FileIO.seekable() could return False if the file position
93 was negative when truncated to a C int. Patch by Victor Stinner.
94
Mark Dickinsonae681df2009-03-21 10:26:31 +000095Extension Modules
96-----------------
97
98- Issue #5463: In struct module, remove deprecated overflow wrapping
99 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +0000100 struct.error instead of returning b'\xff\xff\xff\xff'. The
101 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
102 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +0000103
Benjamin Petersond1735892009-03-07 18:46:21 +0000104
Benjamin Petersona58a6262009-03-07 16:34:40 +0000105What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +0000106================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000107
Benjamin Petersona58a6262009-03-07 16:34:40 +0000108*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000109
110Core and Builtins
111-----------------
112
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +0000113- The io module has been reimplemented in C for speed.
114
Raymond Hettingerb0d56af2009-03-03 10:52:49 +0000115- Give dict views an informative __repr__.
116
Eric Smith5e5c0db2009-02-20 14:25:03 +0000117- Issue #5247: Improve error message when unknown format codes are
118 used when using str.format() with str, int, and float arguments.
119
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000120- Issue #5249: time.strftime returned malformed string when format string
121 contained non ascii character on windows.
122
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000123- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
124 source has already been decoded into str.
125
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000126- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
127 rotating the object pointer by 4 bits to the right.
128
Mark Dickinson87ec0852009-02-09 17:15:59 +0000129- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
130 it now forces its argument to double before testing for infinity.
131
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000132- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
133 returns a non-number type.
134
Benjamin Peterson87618552009-02-08 15:00:52 +0000135- Issue #5182: Removed memoryview.__str__.
136
Mark Dickinsonc008a172009-02-01 13:59:22 +0000137- Issue #1717: Removed builtin cmp() function, dropped tp_compare
138 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000139 the type definition cmpfunc. The tp_compare slot has been renamed
140 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000141
Raymond Hettingere8364232009-02-02 22:55:09 +0000142- Issue 1242657: the __len__() and __length_hint__() calls in several tools
143 were suppressing all exceptions. These include list() and bytearray().
144
Mark Dickinson1124e712009-01-28 21:25:58 +0000145- Issue #4707: round(x, n) now returns an integer if x is an integer.
146 Previously it returned a float.
147
Antoine Pitroub52ec782009-01-25 16:34:23 +0000148- Issue #4753: By enabling a configure option named '--with-computed-gotos'
149 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
150 evaluation loop is compiled with a new dispatch mechanism which gives
151 speedups of up to 20%, depending on the system, on various benchmarks.
152
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000153- Issue #4874: Most builtin decoders now reject unicode input.
154
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000155- Issue #4842: Don't allow trailing 'L' when constructing an integer
156 from a string.
157
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000158- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
159
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000160- Issue #4838: When a module is deallocated, free the memory backing the
161 optional module state data.
162
Mark Dickinson8055afd2009-01-17 10:04:45 +0000163- Issue #4910: Rename nb_long slot to nb_reserved, and change its
164 type to (void *).
165
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000166- Issue #4935: The overflow checking code in the expandtabs() method common
167 to str, bytes and bytearray could be optimized away by the compiler, letting
168 the interpreter segfault instead of raising an error.
169
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000170- Issue #3720: Fix a crash when an iterator modifies its class and removes its
171 __next__ method.
172
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000173- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
174 function no longer attempt to call the __long__ slot to convert an object
175 to an integer. Only the __int__ and __trunc__ slots are examined.
176
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000177- Issue #4893: Use NT threading on CE.
178
Martin v. Löwisec59d042009-01-12 07:59:10 +0000179- Issue #4915: Port sysmodule to Windows CE.
180
Antoine Pitrouab868312009-01-10 15:40:25 +0000181- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
182 common cases are optimized thanks to a dedicated fast path and a moderate
183 amount of loop unrolling.
184
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000185- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
186 collecting the oldest generation) so that allocating lots of objects without
187 destroying them does not show quadratic performance. Based on a proposal by
188 Martin von Löwis at
189 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
190
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000191- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000192 having been closed (for instance, a read() call could return some
193 previously buffered data). Patch by Dmitry Vasiliev.
194
Antoine Pitrou05608432009-01-09 18:53:14 +0000195- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
196 flag to work properly. Furthermore, when specifying -u, the text stdout
197 and stderr streams have line-by-line buffering enabled (the default being
198 to buffer arbitrary chunks of data).
199
Raymond Hettinger35631532009-01-09 03:58:09 +0000200- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
201 instead of ints (reducing its size from 4 to 8 times thereby reducing
202 Python's overall memory).
203
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000204- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
205 an existing .py counterpart, override the co_filename attributes of all
206 code objects if the original filename is obsolete (which can happen if the
207 file has been renamed, moved, or if it is accessed through different paths).
208 Patch by Ziga Seilnacht and Jean-Paul Calderone.
209
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000210- Issue #4580: Fix slicing of memoryviews when the item size is greater than
211 one byte. Also fixes the meaning of len() so that it returns the number of
212 items, rather than the size in bytes.
213
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000214- Issue #4075: Use OutputDebugStringW in Py_FatalError.
215
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000216- Issue #4747: When the terminal does not use utf-8, executing a script with
217 non-ascii characters in its name could fail with a "SyntaxError: None" error.
218
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000219- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000220 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000221
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000222- Issue #3680: Reference cycles created through a dict, set or deque iterator
223 did not get collected.
224
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000225- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
226 where the tp_hash and tp_dict slots are both NULL.
227
Georg Brandlccc47b62008-12-28 11:44:14 +0000228- Issue #4759: None is now allowed as the first argument of
229 bytearray.translate(). It was always allowed for bytes.translate().
230
Skip Montanaro80072cb2008-12-23 03:51:14 +0000231- Added test case to ensure attempts to read from a file opened for writing
232 fail.
233
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000234- Issue #3106: Speedup some comparisons (str/str and int/int).
235
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000236- Issue #2183: Simplify and optimize bytecode for list, dict and set
237 comprehensions. Original patch for list comprehensions by Neal Norwitz.
238
Antoine Pitrou621601a2008-12-17 23:18:19 +0000239- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
240 print elapsed times, not only when some objects are uncollectable /
241 unreachable. Original patch by Neil Schemenauer.
242
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000243- Issue #3439: Add a bit_length method to int.
244
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000245- Issue #2173: When getting device encoding, check that return value of
246 nl_langinfo is not the empty string. This was causing silent build
247 failures on OS X.
248
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000249- Issue #4597: Fixed several opcodes that weren't always propagating
250 exceptions.
251
252- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000253 context manager returns a value that cannot be converted to a bool.
254
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000255- Issue #4445: Replace "sizeof(PyBytesObject)" with
256 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
257 bytes instances. On a typical machine this saves 3 bytes of memory
258 (on average) per allocation of a bytes instance.
259
Christian Heimesa872de52008-12-05 08:26:55 +0000260- Issue #4533: File read operation was dreadfully slow due to a slowly
261 growing read buffer. Fixed by using the same growth rate algorithm as
262 Python 2.x.
263
Antoine Pitrou5504e892008-12-06 21:27:53 +0000264- Issue #4509: Various issues surrounding resize of bytearray objects to
265 which there are buffer exports (e.g. memoryview instances).
266
Georg Brandlf9734072008-12-07 15:30:06 +0000267- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
268 method on file objects with closefd=False. The file descriptor is still
269 kept open but the file object behaves like a closed file. The ``FileIO``
270 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000271
Antoine Pitroubc420402008-12-07 20:14:49 +0000272- Issue #4569: Interpreter crash when mutating a memoryview with an item size
273 larger than 1.
274
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000275- Issue #4748: Lambda generators no longer return a value.
276
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000277- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
278
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000279Library
280-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000281
Antoine Pitrou350370c2009-03-14 00:13:13 +0000282- Issue #1222: locale.format() bug when the thousands separator is a space
283 character.
284
Tarek Ziadé516db942009-03-11 12:52:00 +0000285- Issue #5472: Fixed distutils.test_util tear down. Original patch by
286 Tim Golden.
287
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000288- collections.deque() objects now have a read-only attribute called maxlen.
289
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000290- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
291 it is has been populated and properly configured in order to prevent
292 window flashing.
293
Guilherme Polo56f5be52009-03-07 01:54:57 +0000294- Issue #4792: Prevent a segfault in _tkinter by using the
295 guaranteed to be safe interp argument given to the PythonCmd in place of
296 the Tcl interpreter taken from a PythonCmd_ClientData.
297
298- Issue #5193: Guarantee that tkinter.Text.search returns a string.
299
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000300- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
301 Original patch by Akira Kitada.
302
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000303- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
304
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000305- Issue #5385: Fixed mmap crash after resize failure on windows.
306
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000307- Issue #5179: Fixed subprocess handle leak on failure on windows.
308
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000309- PEP 372: Added collections.OrderedDict().
310
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000311- The _asdict() for method for namedtuples now returns an OrderedDict().
312
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000313- configparser now defaults to using an ordered dictionary.
314
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000315- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
316 import guess_extension`` was used.
317
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000318- Issue #1733986: Fixed mmap crash in accessing elements of second map object
319 with same tagname but larger size than first map. (Windows)
320
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000321- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
322 overrun.
323
Tarek Ziadéf0721222009-02-28 10:16:43 +0000324- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
325 bdist_rpm command.
326
327- Issue #5378: added --quiet option to Distutils bdist_rpm command.
328
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000329- Issue #5052: make Distutils compatible with 2.3 again.
330
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000331- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
332 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000333
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000334- Issue #5287: Add exception handling around findCaller() call to help out
335 IronPython.
336
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000337- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
338 The file was resized to wrong size.
339
340- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
341
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000342- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000343 from the package_data and the data_files metadata.
344
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000345- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000346 support.TempdirManager, to avoid writing in the tests directory.
347
Tarek Ziadé68c50952009-02-13 23:04:17 +0000348- Issue #4524: distutils build_script command failed with --with-suffix=3.
349 Initial patch by Amaury Forgeot d'Arc.
350
Tarek Ziadé811d6242009-02-13 22:26:15 +0000351- Issue #2461: added tests for distutils.util
352
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000353- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
354 which inherited from numbers.py which did not have __slots__ defined. The
355 numbers hierarchy now has its own __slots__ declarations.
356
Antoine Pitroub353c122009-02-11 00:39:14 +0000357- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
358 encoding.
359
Thomas Heller465c8022009-02-10 18:59:04 +0000360- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
361 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
362
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000363- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
364 under NT and OS2. Patch by Philip Jenvey.
365
Brett Cannonbefb14f2009-02-10 02:10:16 +0000366- Issue #5128: Make compileall properly inspect bytecode to determine if needs
367 to be recreated. This avoids a timing hole thanks to the old reliance on the
368 ctime of the files involved.
369
Guilherme Polob681df42009-02-09 22:33:59 +0000370- Issue #5122: Synchronize tk load failure check to prevent a potential
371 deadlock.
372
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000373- Issue #1818: collections.namedtuple() now supports a keyword argument
374 'rename' which lets invalid fieldnames be automatically converted to
375 positional names in the form, _1, _2, ...
376
Guilherme Poloae098992009-02-09 16:44:24 +0000377- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
378
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000379- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
380 public documented method ``ZipImporter.get_filename()``.
381
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000382- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
383 the execution of packages by looking for and executing a ``__main__``
384 submodule when a package name is supplied. Initial patch by Andi
385 Vajda.
386
Guilherme Polo491aee22009-02-06 23:16:11 +0000387- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
388 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
389 Tkapp_Call when calling from a thread different than the one that created
390 the Tcl interpreter. Patch by Robert Hancock.
391
Eric Smith0e5b5622009-02-06 01:32:42 +0000392- Issue #4285: Change sys.version_info to be a named tuple. Patch by
393 Ross Light.
394
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000395- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000396 environment/Makefile. Patch by Douglas Greiman.
397
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000398- Issue #1276768: The verbose option was not used in the code of
399 distutils.file_util and distutils.dir_util.
400
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000401- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000402 --enabled-shared activated. Initial patch by Dave Peterson.
403
Guilherme Polo7f423952009-02-02 21:17:09 +0000404- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
405
Raymond Hettinger85602262009-02-03 04:19:10 +0000406- The shelve module now defaults to pickle protocol 3.
407
Brett Cannone61426e2009-01-30 01:31:34 +0000408- Fix a bug in the trace module where a bytes object from co_lnotab had its
409 items being passed through ord().
410
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000411- Issue #2047: shutil.move() could believe that its destination path was
412 inside its source path if it began with the same letters (e.g. "src" vs.
413 "src.new").
414
Guilherme Polo5f238482009-01-28 14:41:10 +0000415- Added the ttk module. See issue #2983: Ttk support for Tkinter.
416
Raymond Hettinger89e12962009-01-26 02:09:03 +0000417- Removed isSequenceType(), isMappingType, and isNumberType() from the
418 operator module; use the abstract base classes instead. Also removed
419 the repeat() function; use mul() instead.
420
Raymond Hettinger0f055172009-01-27 10:06:09 +0000421- Issue 5021: doctest.testfile() did not create __name__ and
422 collections.namedtuple() relied on __name__ being defined.
423
424- Backport importlib from Python 3.1. Only the import_module() function has
425 been backported to help facilitate transitions from 2.7 to 3.1.
426
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000427- Issue #1885: distutils. When running sdist with --formats=tar,gztar
428 the tar file was overriden by the gztar one.
429
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000430- Issue #4863: distutils.mwerkscompiler has been removed.
431
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000432- Added a new itertools functions: combinations_with_replacement()
433 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000434
Raymond Hettinger30729212009-02-12 06:28:27 +0000435- Issue 5032: added a step argument to itertools.count() and
436 allowed non-integer arguments.
437
Jesse Noller41faa542009-01-25 03:45:53 +0000438- Fix and properly document the multiprocessing module's logging
439 support, expose the internal levels and provide proper usage
440 examples.
441
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000442- Issue #1672332: fix unpickling of subnormal floats, which was
443 producing a ValueError on some platforms.
444
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000445- Issue #3881: Help Tcl to load even when started through the
446 unreadable local symlink to "Program Files" on Vista.
447
Martin v. Löwis59e47792009-01-24 14:10:07 +0000448- Issue #4710: Extract directories properly in the zipfile module;
449 allow adding directories to a zipfile.
450
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000451- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000452 --without-threads argument. When this occurs, _multiprocessing will
453 be disabled, and not compiled.
454
Antoine Pitrou08838b62009-01-21 00:55:13 +0000455- Issue #5008: When a file is opened in append mode with the new IO library,
456 do an explicit seek to the end of file (so that e.g. tell() returns the
457 file size rather than 0). This is consistent with the behaviour of the
458 traditional 2.x file object.
459
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000460- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
461 parameter was set.
462
Mark Dickinson8dd05142009-01-20 20:43:58 +0000463- Issue #4842: Always append a trailing 'L' when pickling longs using
464 pickle protocol 0. When reading, the 'L' is optional.
465
Brett Cannonafccd632009-01-20 02:21:27 +0000466- Add the importlib package.
467
Jesse Noller9a0fc972009-01-18 21:12:58 +0000468- Issue #4301: Patch the logging module to add processName support, remove
469 _check_logger_class from multiprocessing.
470
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000471- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000472 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000473
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000474- Issue #4959: inspect.formatargspec now works for keyword only arguments
475 without defaults.
476
Jesse Noller6214edd2009-01-19 16:23:53 +0000477- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
478 for *nix machines for negative handles and large int handles. Without this check
479 it is possible to segfault the interpreter.
480
Jesse Nollerb0516a62009-01-18 03:11:38 +0000481- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
482 in sharedctypes.py.
483
484- Issue #1225107: inspect.isclass() returned True for instances with a custom
485 __getattr__.
486
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000487- Issue #3826 and #4791: The socket module now closes the underlying socket
488 appropriately when it is being used via socket.makefile() objects
489 rather than delaying the close by waiting for garbage collection to do it.
490
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000491- Issue #1696199: Add collections.Counter() for rapid and convenient
492 counting.
493
Antoine Pitrou308705e2009-01-10 16:22:51 +0000494- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
495
Thomas Heller5e4e4272009-01-08 09:34:20 +0000496- Issue #4867: Fixed a crash in ctypes when passing a string to a
497 function without defining argtypes.
498
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000499- Issue #4272: Add an optional argument to the GzipFile constructor to override
500 the timestamp in the gzip stream. The default value remains the current time.
501 The information can be used by e.g. gunzip when decompressing. Patch by
502 Jacques Frechet.
503
Mark Dickinson315a20a2009-01-04 21:34:18 +0000504- Restore Python 2.3 compatibility for decimal.py.
505
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000506- Issue #3638: Remove functions from _tkinter module level that depend on
507 TkappObject to work with multiple threads.
508
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000509- Issue #4718: Adapt the wsgiref package so that it actually works with
510 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000511 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
512
Raymond Hettinger771ed762009-01-03 19:20:32 +0000513- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
514 to the decimal module.
515
Georg Brandl3a9b0622009-01-03 22:07:57 +0000516- Fractions.from_float() no longer loses precision for integers too big to
517 cast as floats.
518
Mark Dickinsonf9236412009-01-02 23:23:21 +0000519- Issue #4812: add missing underscore prefix to some internal-use-only
520 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
521
Georg Brandl3a9b0622009-01-03 22:07:57 +0000522- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
523 did unnecessary work in the common case where no key function was specified.
524
Georg Brandlb1441c72009-01-03 22:33:39 +0000525- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
526 the function is not a generator.
527
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000528- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
529 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000530
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000531- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000532 function. Original patch by Thomas Heller.
533
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000534- Issue #3767: Convert Tk object to string in tkColorChooser.
535
Martin v. Löwise354d782008-12-29 16:03:04 +0000536- Issue #3248: Allow placing ScrolledText in a PanedWindow.
537
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000538- Issue #4444: Allow assertRaises() to be used as a context handler, so that
539 the code under test can be written inline if more practical.
540
Georg Brandldb7b6b92009-01-01 15:53:14 +0000541- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
542 works as expected in the interactive environment.
543
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000544- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
545 Gabriel Genellina.
546
Antoine Pitrou180a3362008-12-14 16:36:46 +0000547- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
548 boundary.
549
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000550- Issue #4223: inspect.getsource() will now correctly display source code
551 for packages loaded via zipimport (or any other conformant PEP 302
552 loader). Original patch by Alexander Belopolsky.
553
554- Issue #4201: pdb can now access and display source code loaded via
555 zipimport (or any other conformant PEP 302 loader). Original patch by
556 Alexander Belopolsky.
557
558- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
559 302 conformant loader) will now work correctly in most cases (they
560 are still subject to the constraints that exist for all code running
561 from inside a module loaded via a PEP 302 loader and attempting to
562 perform IO operations based on __file__). Original patch by
563 Alexander Belopolsky.
564
565- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
566 allows backporting to maintenance branches. Original patch by
567 Alexander Belopolsky.
568
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000569- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
570 a non-ASCII letter.
571
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000572- Issue #4616: TarFile.utime(): Restore directory times on Windows.
573
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000574- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
575 codec cannot be found. This is for compatibility with the builtin behavior.
576
Facundo Batista708d5812008-12-11 04:20:07 +0000577- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
578 give correct results in the case where one argument is a quiet NaN
579 and the other is a finite number that requires rounding.
580
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000581- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
582 libs.
583
Georg Brandlf9734072008-12-07 15:30:06 +0000584- Added the subprocess.check_call_output() convenience function to get output
585 from a subprocess on success or raise an exception on error.
586
587- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
588 support unusual filenames (such as those containing semi-colons) in
589 Content-Disposition headers.
590
591- Issue #4384: Added logging integration with warnings module using
592 captureWarnings(). This change includes a NullHandler which does nothing;
593 it will be of use to library developers who want to avoid the "No handlers
594 could be found for logger XXX" message which can appear if the library user
595 doesn't configure logging.
596
597- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
598 exception.
599
Georg Brandleee31162008-12-07 15:15:22 +0000600- Issue #4529: fix the parser module's validation of try-except-finally
601 statements.
602
603- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
604 not a malformed option.
605
606- Added the subprocess.check_output() convenience function to get output
607 from a subprocess on success or raise an exception on error.
608
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000609- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
610 the corresponding tests now pass.
611
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000612- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
613 it was calling the wrong open() function.
614
Fred Drake9a0a65b2008-12-04 19:24:50 +0000615- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
616 support unusual filenames (such as those containing semi-colons) in
617 Content-Disposition headers.
618
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000619- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
620 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
621
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000622- Issue #5104: The socket module now raises OverflowError when 16-bit port and
623 protocol numbers are supplied outside the allowed 0-65536 range on bind()
624 and getservbyport().
625
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000626Tools/Demos
627-----------
628
Antoine Pitrou8a681222009-02-07 17:13:31 +0000629- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
630 and make it 2.6-compatible.
631
Guilherme Poloa7d27972009-01-28 16:06:51 +0000632- Ttk demos added in Demo/tkinter/ttk/
633
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000634- Issue #4677: add two list comprehension tests to pybench.
635
Georg Brandlb1441c72009-01-03 22:33:39 +0000636
637Build
638-----
639
Matthias Klose906785c2009-02-22 23:18:38 +0000640- Link the shared python library with $(MODLIBS).
641
Martin v. Löwis11f72102009-02-10 13:13:30 +0000642- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
643
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000644- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
645
Martin v. Löwise97637d2009-01-11 09:45:11 +0000646- Issue #4895: Use _strdup on Windows CE.
647
Georg Brandlb1441c72009-01-03 22:33:39 +0000648- Issue #4472: "configure --enable-shared" now works on OSX
649
650- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
651
652- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
653
654- Issue #4289: Remove Cancel button from AdvancedDlg.
655
656- Issue #1656675: Register a drop handler for .py* files on Windows.
657
658- Issue #4120: Exclude manifest from extension modules in VS2008.
659
660- Issue #4091: Install pythonxy.dll in system32 again.
661
662- Issue #4018: Disable "for me" installations on Vista.
663
664- Issue #3758: Add ``patchcheck`` build target to .PHONY.
665
666- Issue #4204: Fixed module build errors on FreeBSD 4.
667
668
669C-API
670-----
671
Mark Dickinson21776072009-02-10 16:13:25 +0000672- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
673 for negative arguments. Previously, it raised TypeError.
674
Georg Brandlb1441c72009-01-03 22:33:39 +0000675- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
676
677- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
678 the GIL is released, or owned by another thread.
679
680- Issue #4122: On Windows, fix a compilation error when using the
681 Py_UNICODE_ISSPACE macro in an extension module.
682
683
Mark Dickinsone675f082008-12-11 21:56:00 +0000684Extension Modules
685-----------------
686
Gregory P. Smith365a1862009-02-12 07:35:29 +0000687- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
688 supporting objects as input no matter how it was compiled (built in
689 implementations or external openssl library).
690
Mark Dickinson29500f62009-01-15 15:36:10 +0000691- Issue #4397: Fix occasional test_socket failure on OS X.
692
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000693- Issue #4279: Fix build of parsermodule under Cygwin.
694
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000695- Issue #4751: hashlib now releases the GIL when hashing large buffers
696 (with a hardwired threshold of 2048 bytes), allowing better parallelization
697 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
698
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000699- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
700
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000701- Issue #4738: Each zlib object now has a separate lock, allowing to compress
702 or decompress several streams at once on multi-CPU systems. Also, the GIL
703 is now released when computing the CRC of a large buffer. Patch by ebfe.
704
Georg Brandlb1441c72009-01-03 22:33:39 +0000705- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
706
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000707- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
708
Mark Dickinsone675f082008-12-11 21:56:00 +0000709- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
710 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000711
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000712- Issue #4583: array.array would not always prohibit resizing when a buffer
713 has been exported, resulting in an interpreter crash when accessing the
714 buffer.
715
Martin v. Löwis841edad2008-11-30 10:36:49 +0000716
Guilherme Polo9de29af2009-01-28 20:40:48 +0000717Tests
718-----
719
720- Issue #5083: New 'gui' resource for regrtest.
721
722
Brett Cannon7317c1e2008-11-25 19:19:17 +0000723Docs
724----
725
Georg Brandl52b92cc2008-05-25 09:43:03 +0000726
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000727**(For information about older versions, consult the HISTORY file.)**