blob: 323549e50c942b67af625bf7f390ae814a53cef3 [file] [log] [blame]
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001+++++++++++
2Python News
3+++++++++++
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
15Library
16-------
17
18
Benjamin Petersona58a6262009-03-07 16:34:40 +000019What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +000020================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000021
Benjamin Petersona58a6262009-03-07 16:34:40 +000022*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000023
24Core and Builtins
25-----------------
26
Eric Smith5e5c0db2009-02-20 14:25:03 +000027=======
Raymond Hettingerb0d56af2009-03-03 10:52:49 +000028
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +000029- The io module has been reimplemented in C for speed.
30
Raymond Hettingerb0d56af2009-03-03 10:52:49 +000031- Give dict views an informative __repr__.
32
Eric Smith5e5c0db2009-02-20 14:25:03 +000033- Issue #5247: Improve error message when unknown format codes are
34 used when using str.format() with str, int, and float arguments.
35
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +000036- Issue #5249: time.strftime returned malformed string when format string
37 contained non ascii character on windows.
38
Benjamin Petersonf5b52242009-03-02 23:31:26 +000039- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
40 source has already been decoded into str.
41
Antoine Pitrou79eee6b2009-02-13 14:01:05 +000042- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
43 rotating the object pointer by 4 bits to the right.
44
Mark Dickinson87ec0852009-02-09 17:15:59 +000045- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
46 it now forces its argument to double before testing for infinity.
47
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +000048- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
49 returns a non-number type.
50
Benjamin Peterson87618552009-02-08 15:00:52 +000051- Issue #5182: Removed memoryview.__str__.
52
Mark Dickinsonc008a172009-02-01 13:59:22 +000053- Issue #1717: Removed builtin cmp() function, dropped tp_compare
54 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +000055 the type definition cmpfunc. The tp_compare slot has been renamed
56 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +000057
Raymond Hettingere8364232009-02-02 22:55:09 +000058- Issue 1242657: the __len__() and __length_hint__() calls in several tools
59 were suppressing all exceptions. These include list() and bytearray().
60
Mark Dickinson1124e712009-01-28 21:25:58 +000061- Issue #4707: round(x, n) now returns an integer if x is an integer.
62 Previously it returned a float.
63
Antoine Pitroub52ec782009-01-25 16:34:23 +000064- Issue #4753: By enabling a configure option named '--with-computed-gotos'
65 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
66 evaluation loop is compiled with a new dispatch mechanism which gives
67 speedups of up to 20%, depending on the system, on various benchmarks.
68
Antoine Pitrou81fabdb2009-01-22 10:11:36 +000069- Issue #4874: Most builtin decoders now reject unicode input.
70
Mark Dickinson9ffc0202009-01-20 20:45:53 +000071- Issue #4842: Don't allow trailing 'L' when constructing an integer
72 from a string.
73
Benjamin Peterson05e782f2009-01-19 15:15:02 +000074- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
75
Antoine Pitroue4bc7f62009-01-17 21:06:43 +000076- Issue #4838: When a module is deallocated, free the memory backing the
77 optional module state data.
78
Mark Dickinson8055afd2009-01-17 10:04:45 +000079- Issue #4910: Rename nb_long slot to nb_reserved, and change its
80 type to (void *).
81
Antoine Pitrou8d4e5052009-01-13 22:59:11 +000082- Issue #4935: The overflow checking code in the expandtabs() method common
83 to str, bytes and bytearray could be optimized away by the compiler, letting
84 the interpreter segfault instead of raising an error.
85
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +000086- Issue #3720: Fix a crash when an iterator modifies its class and removes its
87 __next__ method.
88
Mark Dickinsone5e298f2009-01-12 20:49:19 +000089- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
90 function no longer attempt to call the __long__ slot to convert an object
91 to an integer. Only the __int__ and __trunc__ slots are examined.
92
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +000093- Issue #4893: Use NT threading on CE.
94
Martin v. Löwisec59d042009-01-12 07:59:10 +000095- Issue #4915: Port sysmodule to Windows CE.
96
Antoine Pitrouab868312009-01-10 15:40:25 +000097- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
98 common cases are optimized thanks to a dedicated fast path and a moderate
99 amount of loop unrolling.
100
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000101- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
102 collecting the oldest generation) so that allocating lots of objects without
103 destroying them does not show quadratic performance. Based on a proposal by
104 Martin von Löwis at
105 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
106
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000107- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000108 having been closed (for instance, a read() call could return some
109 previously buffered data). Patch by Dmitry Vasiliev.
110
Antoine Pitrou05608432009-01-09 18:53:14 +0000111- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
112 flag to work properly. Furthermore, when specifying -u, the text stdout
113 and stderr streams have line-by-line buffering enabled (the default being
114 to buffer arbitrary chunks of data).
115
Raymond Hettinger35631532009-01-09 03:58:09 +0000116- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
117 instead of ints (reducing its size from 4 to 8 times thereby reducing
118 Python's overall memory).
119
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000120- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
121 an existing .py counterpart, override the co_filename attributes of all
122 code objects if the original filename is obsolete (which can happen if the
123 file has been renamed, moved, or if it is accessed through different paths).
124 Patch by Ziga Seilnacht and Jean-Paul Calderone.
125
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000126- Issue #4580: Fix slicing of memoryviews when the item size is greater than
127 one byte. Also fixes the meaning of len() so that it returns the number of
128 items, rather than the size in bytes.
129
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000130- Issue #4075: Use OutputDebugStringW in Py_FatalError.
131
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000132- Issue #4747: When the terminal does not use utf-8, executing a script with
133 non-ascii characters in its name could fail with a "SyntaxError: None" error.
134
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000135- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000136 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000137
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000138- Issue #3680: Reference cycles created through a dict, set or deque iterator
139 did not get collected.
140
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000141- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
142 where the tp_hash and tp_dict slots are both NULL.
143
Georg Brandlccc47b62008-12-28 11:44:14 +0000144- Issue #4759: None is now allowed as the first argument of
145 bytearray.translate(). It was always allowed for bytes.translate().
146
Skip Montanaro80072cb2008-12-23 03:51:14 +0000147- Added test case to ensure attempts to read from a file opened for writing
148 fail.
149
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000150- Issue #3106: Speedup some comparisons (str/str and int/int).
151
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000152- Issue #2183: Simplify and optimize bytecode for list, dict and set
153 comprehensions. Original patch for list comprehensions by Neal Norwitz.
154
Antoine Pitrou621601a2008-12-17 23:18:19 +0000155- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
156 print elapsed times, not only when some objects are uncollectable /
157 unreachable. Original patch by Neil Schemenauer.
158
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000159- Issue #3439: Add a bit_length method to int.
160
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000161- Issue #2173: When getting device encoding, check that return value of
162 nl_langinfo is not the empty string. This was causing silent build
163 failures on OS X.
164
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000165- Issue #4597: Fixed several opcodes that weren't always propagating
166 exceptions.
167
168- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000169 context manager returns a value that cannot be converted to a bool.
170
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000171- Issue #4445: Replace "sizeof(PyBytesObject)" with
172 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
173 bytes instances. On a typical machine this saves 3 bytes of memory
174 (on average) per allocation of a bytes instance.
175
Christian Heimesa872de52008-12-05 08:26:55 +0000176- Issue #4533: File read operation was dreadfully slow due to a slowly
177 growing read buffer. Fixed by using the same growth rate algorithm as
178 Python 2.x.
179
Antoine Pitrou5504e892008-12-06 21:27:53 +0000180- Issue #4509: Various issues surrounding resize of bytearray objects to
181 which there are buffer exports (e.g. memoryview instances).
182
Georg Brandlf9734072008-12-07 15:30:06 +0000183- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
184 method on file objects with closefd=False. The file descriptor is still
185 kept open but the file object behaves like a closed file. The ``FileIO``
186 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000187
Antoine Pitroubc420402008-12-07 20:14:49 +0000188- Issue #4569: Interpreter crash when mutating a memoryview with an item size
189 larger than 1.
190
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000191- Issue #4748: Lambda generators no longer return a value.
192
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000193- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
194
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000195Library
196-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000197
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000198- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
199 it is has been populated and properly configured in order to prevent
200 window flashing.
201
Guilherme Polo56f5be52009-03-07 01:54:57 +0000202- Issue #4792: Prevent a segfault in _tkinter by using the
203 guaranteed to be safe interp argument given to the PythonCmd in place of
204 the Tcl interpreter taken from a PythonCmd_ClientData.
205
206- Issue #5193: Guarantee that tkinter.Text.search returns a string.
207
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000208- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
209 Original patch by Akira Kitada.
210
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000211- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
212
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000213- Issue #5385: Fixed mmap crash after resize failure on windows.
214
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000215- Issue #5179: Fixed subprocess handle leak on failure on windows.
216
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000217- PEP 372: Added collections.OrderedDict().
218
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000219- The _asdict() for method for namedtuples now returns an OrderedDict().
220
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000221- configparser now defaults to using an ordered dictionary.
222
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000223- Issue #1733986: Fixed mmap crash in accessing elements of second map object
224 with same tagname but larger size than first map. (Windows)
225
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000226- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
227 overrun.
228
Tarek Ziadéf0721222009-02-28 10:16:43 +0000229- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
230 bdist_rpm command.
231
232- Issue #5378: added --quiet option to Distutils bdist_rpm command.
233
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000234- Issue #5052: make Distutils compatible with 2.3 again.
235
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000236- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
237 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000238
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000239- Issue #5287: Add exception handling around findCaller() call to help out
240 IronPython.
241
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000242- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
243 The file was resized to wrong size.
244
245- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
246
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000247- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000248 from the package_data and the data_files metadata.
249
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000250- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000251 support.TempdirManager, to avoid writing in the tests directory.
252
Tarek Ziadé68c50952009-02-13 23:04:17 +0000253- Issue #4524: distutils build_script command failed with --with-suffix=3.
254 Initial patch by Amaury Forgeot d'Arc.
255
Tarek Ziadé811d6242009-02-13 22:26:15 +0000256- Issue #2461: added tests for distutils.util
257
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000258- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
259 which inherited from numbers.py which did not have __slots__ defined. The
260 numbers hierarchy now has its own __slots__ declarations.
261
Antoine Pitroub353c122009-02-11 00:39:14 +0000262- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
263 encoding.
264
Thomas Heller465c8022009-02-10 18:59:04 +0000265- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
266 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
267
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000268- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
269 under NT and OS2. Patch by Philip Jenvey.
270
Brett Cannonbefb14f2009-02-10 02:10:16 +0000271- Issue #5128: Make compileall properly inspect bytecode to determine if needs
272 to be recreated. This avoids a timing hole thanks to the old reliance on the
273 ctime of the files involved.
274
Guilherme Polob681df42009-02-09 22:33:59 +0000275- Issue #5122: Synchronize tk load failure check to prevent a potential
276 deadlock.
277
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000278- Issue #1818: collections.namedtuple() now supports a keyword argument
279 'rename' which lets invalid fieldnames be automatically converted to
280 positional names in the form, _1, _2, ...
281
Guilherme Poloae098992009-02-09 16:44:24 +0000282- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
283
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000284- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
285 public documented method ``ZipImporter.get_filename()``.
286
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000287- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
288 the execution of packages by looking for and executing a ``__main__``
289 submodule when a package name is supplied. Initial patch by Andi
290 Vajda.
291
Guilherme Polo491aee22009-02-06 23:16:11 +0000292- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
293 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
294 Tkapp_Call when calling from a thread different than the one that created
295 the Tcl interpreter. Patch by Robert Hancock.
296
Eric Smith0e5b5622009-02-06 01:32:42 +0000297- Issue #4285: Change sys.version_info to be a named tuple. Patch by
298 Ross Light.
299
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000300- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000301 environment/Makefile. Patch by Douglas Greiman.
302
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000303- Issue #1276768: The verbose option was not used in the code of
304 distutils.file_util and distutils.dir_util.
305
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000306- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000307 --enabled-shared activated. Initial patch by Dave Peterson.
308
Guilherme Polo7f423952009-02-02 21:17:09 +0000309- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
310
Raymond Hettinger85602262009-02-03 04:19:10 +0000311- The shelve module now defaults to pickle protocol 3.
312
Brett Cannone61426e2009-01-30 01:31:34 +0000313- Fix a bug in the trace module where a bytes object from co_lnotab had its
314 items being passed through ord().
315
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000316- Issue #2047: shutil.move() could believe that its destination path was
317 inside its source path if it began with the same letters (e.g. "src" vs.
318 "src.new").
319
Guilherme Polo5f238482009-01-28 14:41:10 +0000320- Added the ttk module. See issue #2983: Ttk support for Tkinter.
321
Raymond Hettinger89e12962009-01-26 02:09:03 +0000322- Removed isSequenceType(), isMappingType, and isNumberType() from the
323 operator module; use the abstract base classes instead. Also removed
324 the repeat() function; use mul() instead.
325
Raymond Hettinger0f055172009-01-27 10:06:09 +0000326- Issue 5021: doctest.testfile() did not create __name__ and
327 collections.namedtuple() relied on __name__ being defined.
328
329- Backport importlib from Python 3.1. Only the import_module() function has
330 been backported to help facilitate transitions from 2.7 to 3.1.
331
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000332- Issue #1885: distutils. When running sdist with --formats=tar,gztar
333 the tar file was overriden by the gztar one.
334
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000335- Issue #4863: distutils.mwerkscompiler has been removed.
336
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000337- Added a new itertools functions: combinations_with_replacement()
338 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000339
Raymond Hettinger30729212009-02-12 06:28:27 +0000340- Issue 5032: added a step argument to itertools.count() and
341 allowed non-integer arguments.
342
Jesse Noller41faa542009-01-25 03:45:53 +0000343- Fix and properly document the multiprocessing module's logging
344 support, expose the internal levels and provide proper usage
345 examples.
346
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000347- Issue #1672332: fix unpickling of subnormal floats, which was
348 producing a ValueError on some platforms.
349
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000350- Issue #3881: Help Tcl to load even when started through the
351 unreadable local symlink to "Program Files" on Vista.
352
Martin v. Löwis59e47792009-01-24 14:10:07 +0000353- Issue #4710: Extract directories properly in the zipfile module;
354 allow adding directories to a zipfile.
355
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000356- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000357 --without-threads argument. When this occurs, _multiprocessing will
358 be disabled, and not compiled.
359
Antoine Pitrou08838b62009-01-21 00:55:13 +0000360- Issue #5008: When a file is opened in append mode with the new IO library,
361 do an explicit seek to the end of file (so that e.g. tell() returns the
362 file size rather than 0). This is consistent with the behaviour of the
363 traditional 2.x file object.
364
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000365- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
366 parameter was set.
367
Mark Dickinson8dd05142009-01-20 20:43:58 +0000368- Issue #4842: Always append a trailing 'L' when pickling longs using
369 pickle protocol 0. When reading, the 'L' is optional.
370
Brett Cannonafccd632009-01-20 02:21:27 +0000371- Add the importlib package.
372
Jesse Noller9a0fc972009-01-18 21:12:58 +0000373- Issue #4301: Patch the logging module to add processName support, remove
374 _check_logger_class from multiprocessing.
375
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000376- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000377 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000378
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000379- Issue #4959: inspect.formatargspec now works for keyword only arguments
380 without defaults.
381
Jesse Noller6214edd2009-01-19 16:23:53 +0000382- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
383 for *nix machines for negative handles and large int handles. Without this check
384 it is possible to segfault the interpreter.
385
Jesse Nollerb0516a62009-01-18 03:11:38 +0000386- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
387 in sharedctypes.py.
388
389- Issue #1225107: inspect.isclass() returned True for instances with a custom
390 __getattr__.
391
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000392- Issue #3826 and #4791: The socket module now closes the underlying socket
393 appropriately when it is being used via socket.makefile() objects
394 rather than delaying the close by waiting for garbage collection to do it.
395
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000396- Issue #1696199: Add collections.Counter() for rapid and convenient
397 counting.
398
Antoine Pitrou308705e2009-01-10 16:22:51 +0000399- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
400
Thomas Heller5e4e4272009-01-08 09:34:20 +0000401- Issue #4867: Fixed a crash in ctypes when passing a string to a
402 function without defining argtypes.
403
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000404- Issue #4272: Add an optional argument to the GzipFile constructor to override
405 the timestamp in the gzip stream. The default value remains the current time.
406 The information can be used by e.g. gunzip when decompressing. Patch by
407 Jacques Frechet.
408
Mark Dickinson315a20a2009-01-04 21:34:18 +0000409- Restore Python 2.3 compatibility for decimal.py.
410
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000411- Issue #3638: Remove functions from _tkinter module level that depend on
412 TkappObject to work with multiple threads.
413
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000414- Issue #4718: Adapt the wsgiref package so that it actually works with
415 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000416 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
417
Raymond Hettinger771ed762009-01-03 19:20:32 +0000418- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
419 to the decimal module.
420
Georg Brandl3a9b0622009-01-03 22:07:57 +0000421- Fractions.from_float() no longer loses precision for integers too big to
422 cast as floats.
423
Mark Dickinsonf9236412009-01-02 23:23:21 +0000424- Issue #4812: add missing underscore prefix to some internal-use-only
425 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
426
Georg Brandl3a9b0622009-01-03 22:07:57 +0000427- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
428 did unnecessary work in the common case where no key function was specified.
429
Georg Brandlb1441c72009-01-03 22:33:39 +0000430- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
431 the function is not a generator.
432
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000433- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
434 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000435
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000436- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000437 function. Original patch by Thomas Heller.
438
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000439- Issue #3767: Convert Tk object to string in tkColorChooser.
440
Martin v. Löwise354d782008-12-29 16:03:04 +0000441- Issue #3248: Allow placing ScrolledText in a PanedWindow.
442
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000443- Issue #4444: Allow assertRaises() to be used as a context handler, so that
444 the code under test can be written inline if more practical.
445
Georg Brandldb7b6b92009-01-01 15:53:14 +0000446- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
447 works as expected in the interactive environment.
448
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000449- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
450 Gabriel Genellina.
451
Antoine Pitrou180a3362008-12-14 16:36:46 +0000452- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
453 boundary.
454
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000455- Issue #4223: inspect.getsource() will now correctly display source code
456 for packages loaded via zipimport (or any other conformant PEP 302
457 loader). Original patch by Alexander Belopolsky.
458
459- Issue #4201: pdb can now access and display source code loaded via
460 zipimport (or any other conformant PEP 302 loader). Original patch by
461 Alexander Belopolsky.
462
463- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
464 302 conformant loader) will now work correctly in most cases (they
465 are still subject to the constraints that exist for all code running
466 from inside a module loaded via a PEP 302 loader and attempting to
467 perform IO operations based on __file__). Original patch by
468 Alexander Belopolsky.
469
470- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
471 allows backporting to maintenance branches. Original patch by
472 Alexander Belopolsky.
473
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000474- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
475 a non-ASCII letter.
476
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000477- Issue #4616: TarFile.utime(): Restore directory times on Windows.
478
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000479- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
480 codec cannot be found. This is for compatibility with the builtin behavior.
481
Facundo Batista708d5812008-12-11 04:20:07 +0000482- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
483 give correct results in the case where one argument is a quiet NaN
484 and the other is a finite number that requires rounding.
485
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000486- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
487 libs.
488
Georg Brandlf9734072008-12-07 15:30:06 +0000489- Added the subprocess.check_call_output() convenience function to get output
490 from a subprocess on success or raise an exception on error.
491
492- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
493 support unusual filenames (such as those containing semi-colons) in
494 Content-Disposition headers.
495
496- Issue #4384: Added logging integration with warnings module using
497 captureWarnings(). This change includes a NullHandler which does nothing;
498 it will be of use to library developers who want to avoid the "No handlers
499 could be found for logger XXX" message which can appear if the library user
500 doesn't configure logging.
501
502- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
503 exception.
504
Georg Brandleee31162008-12-07 15:15:22 +0000505- Issue #4529: fix the parser module's validation of try-except-finally
506 statements.
507
508- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
509 not a malformed option.
510
511- Added the subprocess.check_output() convenience function to get output
512 from a subprocess on success or raise an exception on error.
513
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000514- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
515 the corresponding tests now pass.
516
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000517- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
518 it was calling the wrong open() function.
519
Fred Drake9a0a65b2008-12-04 19:24:50 +0000520- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
521 support unusual filenames (such as those containing semi-colons) in
522 Content-Disposition headers.
523
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000524- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
525 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
526
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000527- Issue #5104: The socket module now raises OverflowError when 16-bit port and
528 protocol numbers are supplied outside the allowed 0-65536 range on bind()
529 and getservbyport().
530
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000531Tools/Demos
532-----------
533
Antoine Pitrou8a681222009-02-07 17:13:31 +0000534- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
535 and make it 2.6-compatible.
536
Guilherme Poloa7d27972009-01-28 16:06:51 +0000537- Ttk demos added in Demo/tkinter/ttk/
538
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000539- Issue #4677: add two list comprehension tests to pybench.
540
Georg Brandlb1441c72009-01-03 22:33:39 +0000541
542Build
543-----
544
Matthias Klose906785c2009-02-22 23:18:38 +0000545- Link the shared python library with $(MODLIBS).
546
Martin v. Löwis11f72102009-02-10 13:13:30 +0000547- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
548
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000549- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
550
Martin v. Löwise97637d2009-01-11 09:45:11 +0000551- Issue #4895: Use _strdup on Windows CE.
552
Georg Brandlb1441c72009-01-03 22:33:39 +0000553- Issue #4472: "configure --enable-shared" now works on OSX
554
555- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
556
557- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
558
559- Issue #4289: Remove Cancel button from AdvancedDlg.
560
561- Issue #1656675: Register a drop handler for .py* files on Windows.
562
563- Issue #4120: Exclude manifest from extension modules in VS2008.
564
565- Issue #4091: Install pythonxy.dll in system32 again.
566
567- Issue #4018: Disable "for me" installations on Vista.
568
569- Issue #3758: Add ``patchcheck`` build target to .PHONY.
570
571- Issue #4204: Fixed module build errors on FreeBSD 4.
572
573
574C-API
575-----
576
Mark Dickinson21776072009-02-10 16:13:25 +0000577- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
578 for negative arguments. Previously, it raised TypeError.
579
Georg Brandlb1441c72009-01-03 22:33:39 +0000580- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
581
582- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
583 the GIL is released, or owned by another thread.
584
585- Issue #4122: On Windows, fix a compilation error when using the
586 Py_UNICODE_ISSPACE macro in an extension module.
587
588
Mark Dickinsone675f082008-12-11 21:56:00 +0000589Extension Modules
590-----------------
591
Gregory P. Smith365a1862009-02-12 07:35:29 +0000592- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
593 supporting objects as input no matter how it was compiled (built in
594 implementations or external openssl library).
595
Mark Dickinson29500f62009-01-15 15:36:10 +0000596- Issue #4397: Fix occasional test_socket failure on OS X.
597
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000598- Issue #4279: Fix build of parsermodule under Cygwin.
599
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000600- Issue #4751: hashlib now releases the GIL when hashing large buffers
601 (with a hardwired threshold of 2048 bytes), allowing better parallelization
602 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
603
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000604- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
605
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000606- Issue #4738: Each zlib object now has a separate lock, allowing to compress
607 or decompress several streams at once on multi-CPU systems. Also, the GIL
608 is now released when computing the CRC of a large buffer. Patch by ebfe.
609
Georg Brandlb1441c72009-01-03 22:33:39 +0000610- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
611
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000612- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
613
Mark Dickinsone675f082008-12-11 21:56:00 +0000614- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
615 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000616
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000617- Issue #4583: array.array would not always prohibit resizing when a buffer
618 has been exported, resulting in an interpreter crash when accessing the
619 buffer.
620
Martin v. Löwis841edad2008-11-30 10:36:49 +0000621
Guilherme Polo9de29af2009-01-28 20:40:48 +0000622Tests
623-----
624
625- Issue #5083: New 'gui' resource for regrtest.
626
627
Brett Cannon7317c1e2008-11-25 19:19:17 +0000628Docs
629----
630
Georg Brandl52b92cc2008-05-25 09:43:03 +0000631
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000632**(For information about older versions, consult the HISTORY file.)**