blob: bad0a44474631086a7652a30a0527cab30c0fa69 [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
Mark Dickinsonbd792642009-03-18 20:06:12 +000015- Issue #4258: Make it possible to use base 2**30 instead of base
16 2**15 for the internal representation of integers, for performance
17 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
18 --enable-big-digits option to configure, which overrides the
19 default. Add sys.int_info structseq to provide information about
20 the internal format.
21
Mark Dickinson081dfee2009-03-18 14:47:41 +000022- Issue #4474: PyUnicode_FromWideChar now converts characters outside
23 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
24 and sizeof(Py_UNICODE) == 2.
25
Eric Smith8ec90442009-03-14 12:29:34 +000026- Issue #5237: Allow auto-numbered fields in str.format(). For
27 example: '{} {}'.format(1, 2) == '1 2'.
28
Antoine Pitrou652e7072009-03-13 19:25:20 +000029- Issue #5392: when a very low recursion limit was set, the interpreter would
30 abort with a fatal error after the recursion limit was hit twice.
31
Benjamin Petersond1735892009-03-07 18:46:21 +000032Library
33-------
34
Mark Dickinson79f52032009-03-17 23:12:51 +000035- Issue #2110: Add support for thousands separator and 'n' type
36 specifier to Decimal.__format__
37
Mark Dickinson9c59fe02009-03-17 18:15:08 +000038- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
39 '>' alignment characters.
40
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +000041- The error detection code in FileIO.close() could fail to reflect the `errno`
42 value, and report it as -1 instead.
43
Antoine Pitroua28fcfd2009-03-13 23:42:55 +000044- Issue #5016: FileIO.seekable() could return False if the file position
45 was negative when truncated to a C int. Patch by Victor Stinner.
46
Mark Dickinsonae681df2009-03-21 10:26:31 +000047Extension Modules
48-----------------
49
50- Issue #5463: In struct module, remove deprecated overflow wrapping
51 when packing an integer: struct.pack('=L', -1) now raises
52 struct.error instead of returning b'\xff\xff\xff\xff'.
53
Benjamin Petersond1735892009-03-07 18:46:21 +000054
Benjamin Petersona58a6262009-03-07 16:34:40 +000055What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +000056================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000057
Benjamin Petersona58a6262009-03-07 16:34:40 +000058*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000059
60Core and Builtins
61-----------------
62
Eric Smith8ec90442009-03-14 12:29:34 +000063=======
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +000064- The io module has been reimplemented in C for speed.
65
Raymond Hettingerb0d56af2009-03-03 10:52:49 +000066- Give dict views an informative __repr__.
67
Eric Smith5e5c0db2009-02-20 14:25:03 +000068- Issue #5247: Improve error message when unknown format codes are
69 used when using str.format() with str, int, and float arguments.
70
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +000071- Issue #5249: time.strftime returned malformed string when format string
72 contained non ascii character on windows.
73
Benjamin Petersonf5b52242009-03-02 23:31:26 +000074- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
75 source has already been decoded into str.
76
Antoine Pitrou79eee6b2009-02-13 14:01:05 +000077- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
78 rotating the object pointer by 4 bits to the right.
79
Mark Dickinson87ec0852009-02-09 17:15:59 +000080- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
81 it now forces its argument to double before testing for infinity.
82
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +000083- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
84 returns a non-number type.
85
Benjamin Peterson87618552009-02-08 15:00:52 +000086- Issue #5182: Removed memoryview.__str__.
87
Mark Dickinsonc008a172009-02-01 13:59:22 +000088- Issue #1717: Removed builtin cmp() function, dropped tp_compare
89 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +000090 the type definition cmpfunc. The tp_compare slot has been renamed
91 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +000092
Raymond Hettingere8364232009-02-02 22:55:09 +000093- Issue 1242657: the __len__() and __length_hint__() calls in several tools
94 were suppressing all exceptions. These include list() and bytearray().
95
Mark Dickinson1124e712009-01-28 21:25:58 +000096- Issue #4707: round(x, n) now returns an integer if x is an integer.
97 Previously it returned a float.
98
Antoine Pitroub52ec782009-01-25 16:34:23 +000099- Issue #4753: By enabling a configure option named '--with-computed-gotos'
100 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
101 evaluation loop is compiled with a new dispatch mechanism which gives
102 speedups of up to 20%, depending on the system, on various benchmarks.
103
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000104- Issue #4874: Most builtin decoders now reject unicode input.
105
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000106- Issue #4842: Don't allow trailing 'L' when constructing an integer
107 from a string.
108
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000109- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
110
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000111- Issue #4838: When a module is deallocated, free the memory backing the
112 optional module state data.
113
Mark Dickinson8055afd2009-01-17 10:04:45 +0000114- Issue #4910: Rename nb_long slot to nb_reserved, and change its
115 type to (void *).
116
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000117- Issue #4935: The overflow checking code in the expandtabs() method common
118 to str, bytes and bytearray could be optimized away by the compiler, letting
119 the interpreter segfault instead of raising an error.
120
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000121- Issue #3720: Fix a crash when an iterator modifies its class and removes its
122 __next__ method.
123
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000124- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
125 function no longer attempt to call the __long__ slot to convert an object
126 to an integer. Only the __int__ and __trunc__ slots are examined.
127
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000128- Issue #4893: Use NT threading on CE.
129
Martin v. Löwisec59d042009-01-12 07:59:10 +0000130- Issue #4915: Port sysmodule to Windows CE.
131
Antoine Pitrouab868312009-01-10 15:40:25 +0000132- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
133 common cases are optimized thanks to a dedicated fast path and a moderate
134 amount of loop unrolling.
135
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000136- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
137 collecting the oldest generation) so that allocating lots of objects without
138 destroying them does not show quadratic performance. Based on a proposal by
139 Martin von Löwis at
140 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
141
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000142- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000143 having been closed (for instance, a read() call could return some
144 previously buffered data). Patch by Dmitry Vasiliev.
145
Antoine Pitrou05608432009-01-09 18:53:14 +0000146- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
147 flag to work properly. Furthermore, when specifying -u, the text stdout
148 and stderr streams have line-by-line buffering enabled (the default being
149 to buffer arbitrary chunks of data).
150
Raymond Hettinger35631532009-01-09 03:58:09 +0000151- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
152 instead of ints (reducing its size from 4 to 8 times thereby reducing
153 Python's overall memory).
154
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000155- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
156 an existing .py counterpart, override the co_filename attributes of all
157 code objects if the original filename is obsolete (which can happen if the
158 file has been renamed, moved, or if it is accessed through different paths).
159 Patch by Ziga Seilnacht and Jean-Paul Calderone.
160
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000161- Issue #4580: Fix slicing of memoryviews when the item size is greater than
162 one byte. Also fixes the meaning of len() so that it returns the number of
163 items, rather than the size in bytes.
164
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000165- Issue #4075: Use OutputDebugStringW in Py_FatalError.
166
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000167- Issue #4747: When the terminal does not use utf-8, executing a script with
168 non-ascii characters in its name could fail with a "SyntaxError: None" error.
169
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000170- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000171 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000172
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000173- Issue #3680: Reference cycles created through a dict, set or deque iterator
174 did not get collected.
175
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000176- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
177 where the tp_hash and tp_dict slots are both NULL.
178
Georg Brandlccc47b62008-12-28 11:44:14 +0000179- Issue #4759: None is now allowed as the first argument of
180 bytearray.translate(). It was always allowed for bytes.translate().
181
Skip Montanaro80072cb2008-12-23 03:51:14 +0000182- Added test case to ensure attempts to read from a file opened for writing
183 fail.
184
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000185- Issue #3106: Speedup some comparisons (str/str and int/int).
186
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000187- Issue #2183: Simplify and optimize bytecode for list, dict and set
188 comprehensions. Original patch for list comprehensions by Neal Norwitz.
189
Antoine Pitrou621601a2008-12-17 23:18:19 +0000190- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
191 print elapsed times, not only when some objects are uncollectable /
192 unreachable. Original patch by Neil Schemenauer.
193
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000194- Issue #3439: Add a bit_length method to int.
195
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000196- Issue #2173: When getting device encoding, check that return value of
197 nl_langinfo is not the empty string. This was causing silent build
198 failures on OS X.
199
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000200- Issue #4597: Fixed several opcodes that weren't always propagating
201 exceptions.
202
203- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000204 context manager returns a value that cannot be converted to a bool.
205
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000206- Issue #4445: Replace "sizeof(PyBytesObject)" with
207 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
208 bytes instances. On a typical machine this saves 3 bytes of memory
209 (on average) per allocation of a bytes instance.
210
Christian Heimesa872de52008-12-05 08:26:55 +0000211- Issue #4533: File read operation was dreadfully slow due to a slowly
212 growing read buffer. Fixed by using the same growth rate algorithm as
213 Python 2.x.
214
Antoine Pitrou5504e892008-12-06 21:27:53 +0000215- Issue #4509: Various issues surrounding resize of bytearray objects to
216 which there are buffer exports (e.g. memoryview instances).
217
Georg Brandlf9734072008-12-07 15:30:06 +0000218- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
219 method on file objects with closefd=False. The file descriptor is still
220 kept open but the file object behaves like a closed file. The ``FileIO``
221 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000222
Antoine Pitroubc420402008-12-07 20:14:49 +0000223- Issue #4569: Interpreter crash when mutating a memoryview with an item size
224 larger than 1.
225
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000226- Issue #4748: Lambda generators no longer return a value.
227
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000228- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
229
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000230Library
231-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000232
Antoine Pitrou350370c2009-03-14 00:13:13 +0000233- Issue #1222: locale.format() bug when the thousands separator is a space
234 character.
235
Tarek Ziadé516db942009-03-11 12:52:00 +0000236- Issue #5472: Fixed distutils.test_util tear down. Original patch by
237 Tim Golden.
238
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000239- collections.deque() objects now have a read-only attribute called maxlen.
240
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000241- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
242 it is has been populated and properly configured in order to prevent
243 window flashing.
244
Guilherme Polo56f5be52009-03-07 01:54:57 +0000245- Issue #4792: Prevent a segfault in _tkinter by using the
246 guaranteed to be safe interp argument given to the PythonCmd in place of
247 the Tcl interpreter taken from a PythonCmd_ClientData.
248
249- Issue #5193: Guarantee that tkinter.Text.search returns a string.
250
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000251- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
252 Original patch by Akira Kitada.
253
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000254- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
255
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000256- Issue #5385: Fixed mmap crash after resize failure on windows.
257
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000258- Issue #5179: Fixed subprocess handle leak on failure on windows.
259
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000260- PEP 372: Added collections.OrderedDict().
261
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000262- The _asdict() for method for namedtuples now returns an OrderedDict().
263
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000264- configparser now defaults to using an ordered dictionary.
265
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000266- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
267 import guess_extension`` was used.
268
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000269- Issue #1733986: Fixed mmap crash in accessing elements of second map object
270 with same tagname but larger size than first map. (Windows)
271
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000272- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
273 overrun.
274
Tarek Ziadéf0721222009-02-28 10:16:43 +0000275- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
276 bdist_rpm command.
277
278- Issue #5378: added --quiet option to Distutils bdist_rpm command.
279
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000280- Issue #5052: make Distutils compatible with 2.3 again.
281
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000282- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
283 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000284
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000285- Issue #5287: Add exception handling around findCaller() call to help out
286 IronPython.
287
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000288- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
289 The file was resized to wrong size.
290
291- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
292
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000293- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000294 from the package_data and the data_files metadata.
295
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000296- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000297 support.TempdirManager, to avoid writing in the tests directory.
298
Tarek Ziadé68c50952009-02-13 23:04:17 +0000299- Issue #4524: distutils build_script command failed with --with-suffix=3.
300 Initial patch by Amaury Forgeot d'Arc.
301
Tarek Ziadé811d6242009-02-13 22:26:15 +0000302- Issue #2461: added tests for distutils.util
303
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000304- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
305 which inherited from numbers.py which did not have __slots__ defined. The
306 numbers hierarchy now has its own __slots__ declarations.
307
Antoine Pitroub353c122009-02-11 00:39:14 +0000308- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
309 encoding.
310
Thomas Heller465c8022009-02-10 18:59:04 +0000311- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
312 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
313
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000314- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
315 under NT and OS2. Patch by Philip Jenvey.
316
Brett Cannonbefb14f2009-02-10 02:10:16 +0000317- Issue #5128: Make compileall properly inspect bytecode to determine if needs
318 to be recreated. This avoids a timing hole thanks to the old reliance on the
319 ctime of the files involved.
320
Guilherme Polob681df42009-02-09 22:33:59 +0000321- Issue #5122: Synchronize tk load failure check to prevent a potential
322 deadlock.
323
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000324- Issue #1818: collections.namedtuple() now supports a keyword argument
325 'rename' which lets invalid fieldnames be automatically converted to
326 positional names in the form, _1, _2, ...
327
Guilherme Poloae098992009-02-09 16:44:24 +0000328- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
329
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000330- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
331 public documented method ``ZipImporter.get_filename()``.
332
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000333- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
334 the execution of packages by looking for and executing a ``__main__``
335 submodule when a package name is supplied. Initial patch by Andi
336 Vajda.
337
Guilherme Polo491aee22009-02-06 23:16:11 +0000338- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
339 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
340 Tkapp_Call when calling from a thread different than the one that created
341 the Tcl interpreter. Patch by Robert Hancock.
342
Eric Smith0e5b5622009-02-06 01:32:42 +0000343- Issue #4285: Change sys.version_info to be a named tuple. Patch by
344 Ross Light.
345
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000346- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000347 environment/Makefile. Patch by Douglas Greiman.
348
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000349- Issue #1276768: The verbose option was not used in the code of
350 distutils.file_util and distutils.dir_util.
351
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000352- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000353 --enabled-shared activated. Initial patch by Dave Peterson.
354
Guilherme Polo7f423952009-02-02 21:17:09 +0000355- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
356
Raymond Hettinger85602262009-02-03 04:19:10 +0000357- The shelve module now defaults to pickle protocol 3.
358
Brett Cannone61426e2009-01-30 01:31:34 +0000359- Fix a bug in the trace module where a bytes object from co_lnotab had its
360 items being passed through ord().
361
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000362- Issue #2047: shutil.move() could believe that its destination path was
363 inside its source path if it began with the same letters (e.g. "src" vs.
364 "src.new").
365
Guilherme Polo5f238482009-01-28 14:41:10 +0000366- Added the ttk module. See issue #2983: Ttk support for Tkinter.
367
Raymond Hettinger89e12962009-01-26 02:09:03 +0000368- Removed isSequenceType(), isMappingType, and isNumberType() from the
369 operator module; use the abstract base classes instead. Also removed
370 the repeat() function; use mul() instead.
371
Raymond Hettinger0f055172009-01-27 10:06:09 +0000372- Issue 5021: doctest.testfile() did not create __name__ and
373 collections.namedtuple() relied on __name__ being defined.
374
375- Backport importlib from Python 3.1. Only the import_module() function has
376 been backported to help facilitate transitions from 2.7 to 3.1.
377
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000378- Issue #1885: distutils. When running sdist with --formats=tar,gztar
379 the tar file was overriden by the gztar one.
380
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000381- Issue #4863: distutils.mwerkscompiler has been removed.
382
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000383- Added a new itertools functions: combinations_with_replacement()
384 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000385
Raymond Hettinger30729212009-02-12 06:28:27 +0000386- Issue 5032: added a step argument to itertools.count() and
387 allowed non-integer arguments.
388
Jesse Noller41faa542009-01-25 03:45:53 +0000389- Fix and properly document the multiprocessing module's logging
390 support, expose the internal levels and provide proper usage
391 examples.
392
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000393- Issue #1672332: fix unpickling of subnormal floats, which was
394 producing a ValueError on some platforms.
395
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000396- Issue #3881: Help Tcl to load even when started through the
397 unreadable local symlink to "Program Files" on Vista.
398
Martin v. Löwis59e47792009-01-24 14:10:07 +0000399- Issue #4710: Extract directories properly in the zipfile module;
400 allow adding directories to a zipfile.
401
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000402- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000403 --without-threads argument. When this occurs, _multiprocessing will
404 be disabled, and not compiled.
405
Antoine Pitrou08838b62009-01-21 00:55:13 +0000406- Issue #5008: When a file is opened in append mode with the new IO library,
407 do an explicit seek to the end of file (so that e.g. tell() returns the
408 file size rather than 0). This is consistent with the behaviour of the
409 traditional 2.x file object.
410
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000411- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
412 parameter was set.
413
Mark Dickinson8dd05142009-01-20 20:43:58 +0000414- Issue #4842: Always append a trailing 'L' when pickling longs using
415 pickle protocol 0. When reading, the 'L' is optional.
416
Brett Cannonafccd632009-01-20 02:21:27 +0000417- Add the importlib package.
418
Jesse Noller9a0fc972009-01-18 21:12:58 +0000419- Issue #4301: Patch the logging module to add processName support, remove
420 _check_logger_class from multiprocessing.
421
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000422- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000423 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000424
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000425- Issue #4959: inspect.formatargspec now works for keyword only arguments
426 without defaults.
427
Jesse Noller6214edd2009-01-19 16:23:53 +0000428- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
429 for *nix machines for negative handles and large int handles. Without this check
430 it is possible to segfault the interpreter.
431
Jesse Nollerb0516a62009-01-18 03:11:38 +0000432- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
433 in sharedctypes.py.
434
435- Issue #1225107: inspect.isclass() returned True for instances with a custom
436 __getattr__.
437
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000438- Issue #3826 and #4791: The socket module now closes the underlying socket
439 appropriately when it is being used via socket.makefile() objects
440 rather than delaying the close by waiting for garbage collection to do it.
441
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000442- Issue #1696199: Add collections.Counter() for rapid and convenient
443 counting.
444
Antoine Pitrou308705e2009-01-10 16:22:51 +0000445- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
446
Thomas Heller5e4e4272009-01-08 09:34:20 +0000447- Issue #4867: Fixed a crash in ctypes when passing a string to a
448 function without defining argtypes.
449
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000450- Issue #4272: Add an optional argument to the GzipFile constructor to override
451 the timestamp in the gzip stream. The default value remains the current time.
452 The information can be used by e.g. gunzip when decompressing. Patch by
453 Jacques Frechet.
454
Mark Dickinson315a20a2009-01-04 21:34:18 +0000455- Restore Python 2.3 compatibility for decimal.py.
456
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000457- Issue #3638: Remove functions from _tkinter module level that depend on
458 TkappObject to work with multiple threads.
459
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000460- Issue #4718: Adapt the wsgiref package so that it actually works with
461 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000462 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
463
Raymond Hettinger771ed762009-01-03 19:20:32 +0000464- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
465 to the decimal module.
466
Georg Brandl3a9b0622009-01-03 22:07:57 +0000467- Fractions.from_float() no longer loses precision for integers too big to
468 cast as floats.
469
Mark Dickinsonf9236412009-01-02 23:23:21 +0000470- Issue #4812: add missing underscore prefix to some internal-use-only
471 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
472
Georg Brandl3a9b0622009-01-03 22:07:57 +0000473- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
474 did unnecessary work in the common case where no key function was specified.
475
Georg Brandlb1441c72009-01-03 22:33:39 +0000476- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
477 the function is not a generator.
478
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000479- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
480 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000481
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000482- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000483 function. Original patch by Thomas Heller.
484
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000485- Issue #3767: Convert Tk object to string in tkColorChooser.
486
Martin v. Löwise354d782008-12-29 16:03:04 +0000487- Issue #3248: Allow placing ScrolledText in a PanedWindow.
488
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000489- Issue #4444: Allow assertRaises() to be used as a context handler, so that
490 the code under test can be written inline if more practical.
491
Georg Brandldb7b6b92009-01-01 15:53:14 +0000492- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
493 works as expected in the interactive environment.
494
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000495- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
496 Gabriel Genellina.
497
Antoine Pitrou180a3362008-12-14 16:36:46 +0000498- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
499 boundary.
500
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000501- Issue #4223: inspect.getsource() will now correctly display source code
502 for packages loaded via zipimport (or any other conformant PEP 302
503 loader). Original patch by Alexander Belopolsky.
504
505- Issue #4201: pdb can now access and display source code loaded via
506 zipimport (or any other conformant PEP 302 loader). Original patch by
507 Alexander Belopolsky.
508
509- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
510 302 conformant loader) will now work correctly in most cases (they
511 are still subject to the constraints that exist for all code running
512 from inside a module loaded via a PEP 302 loader and attempting to
513 perform IO operations based on __file__). Original patch by
514 Alexander Belopolsky.
515
516- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
517 allows backporting to maintenance branches. Original patch by
518 Alexander Belopolsky.
519
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000520- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
521 a non-ASCII letter.
522
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000523- Issue #4616: TarFile.utime(): Restore directory times on Windows.
524
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000525- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
526 codec cannot be found. This is for compatibility with the builtin behavior.
527
Facundo Batista708d5812008-12-11 04:20:07 +0000528- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
529 give correct results in the case where one argument is a quiet NaN
530 and the other is a finite number that requires rounding.
531
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000532- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
533 libs.
534
Georg Brandlf9734072008-12-07 15:30:06 +0000535- Added the subprocess.check_call_output() convenience function to get output
536 from a subprocess on success or raise an exception on error.
537
538- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
539 support unusual filenames (such as those containing semi-colons) in
540 Content-Disposition headers.
541
542- Issue #4384: Added logging integration with warnings module using
543 captureWarnings(). This change includes a NullHandler which does nothing;
544 it will be of use to library developers who want to avoid the "No handlers
545 could be found for logger XXX" message which can appear if the library user
546 doesn't configure logging.
547
548- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
549 exception.
550
Georg Brandleee31162008-12-07 15:15:22 +0000551- Issue #4529: fix the parser module's validation of try-except-finally
552 statements.
553
554- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
555 not a malformed option.
556
557- Added the subprocess.check_output() convenience function to get output
558 from a subprocess on success or raise an exception on error.
559
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000560- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
561 the corresponding tests now pass.
562
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000563- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
564 it was calling the wrong open() function.
565
Fred Drake9a0a65b2008-12-04 19:24:50 +0000566- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
567 support unusual filenames (such as those containing semi-colons) in
568 Content-Disposition headers.
569
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000570- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
571 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
572
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000573- Issue #5104: The socket module now raises OverflowError when 16-bit port and
574 protocol numbers are supplied outside the allowed 0-65536 range on bind()
575 and getservbyport().
576
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000577Tools/Demos
578-----------
579
Antoine Pitrou8a681222009-02-07 17:13:31 +0000580- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
581 and make it 2.6-compatible.
582
Guilherme Poloa7d27972009-01-28 16:06:51 +0000583- Ttk demos added in Demo/tkinter/ttk/
584
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000585- Issue #4677: add two list comprehension tests to pybench.
586
Georg Brandlb1441c72009-01-03 22:33:39 +0000587
588Build
589-----
590
Matthias Klose906785c2009-02-22 23:18:38 +0000591- Link the shared python library with $(MODLIBS).
592
Martin v. Löwis11f72102009-02-10 13:13:30 +0000593- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
594
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000595- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
596
Martin v. Löwise97637d2009-01-11 09:45:11 +0000597- Issue #4895: Use _strdup on Windows CE.
598
Georg Brandlb1441c72009-01-03 22:33:39 +0000599- Issue #4472: "configure --enable-shared" now works on OSX
600
601- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
602
603- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
604
605- Issue #4289: Remove Cancel button from AdvancedDlg.
606
607- Issue #1656675: Register a drop handler for .py* files on Windows.
608
609- Issue #4120: Exclude manifest from extension modules in VS2008.
610
611- Issue #4091: Install pythonxy.dll in system32 again.
612
613- Issue #4018: Disable "for me" installations on Vista.
614
615- Issue #3758: Add ``patchcheck`` build target to .PHONY.
616
617- Issue #4204: Fixed module build errors on FreeBSD 4.
618
619
620C-API
621-----
622
Mark Dickinson21776072009-02-10 16:13:25 +0000623- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
624 for negative arguments. Previously, it raised TypeError.
625
Georg Brandlb1441c72009-01-03 22:33:39 +0000626- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
627
628- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
629 the GIL is released, or owned by another thread.
630
631- Issue #4122: On Windows, fix a compilation error when using the
632 Py_UNICODE_ISSPACE macro in an extension module.
633
634
Mark Dickinsone675f082008-12-11 21:56:00 +0000635Extension Modules
636-----------------
637
Gregory P. Smith365a1862009-02-12 07:35:29 +0000638- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
639 supporting objects as input no matter how it was compiled (built in
640 implementations or external openssl library).
641
Mark Dickinson29500f62009-01-15 15:36:10 +0000642- Issue #4397: Fix occasional test_socket failure on OS X.
643
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000644- Issue #4279: Fix build of parsermodule under Cygwin.
645
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000646- Issue #4751: hashlib now releases the GIL when hashing large buffers
647 (with a hardwired threshold of 2048 bytes), allowing better parallelization
648 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
649
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000650- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
651
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000652- Issue #4738: Each zlib object now has a separate lock, allowing to compress
653 or decompress several streams at once on multi-CPU systems. Also, the GIL
654 is now released when computing the CRC of a large buffer. Patch by ebfe.
655
Georg Brandlb1441c72009-01-03 22:33:39 +0000656- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
657
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000658- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
659
Mark Dickinsone675f082008-12-11 21:56:00 +0000660- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
661 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000662
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000663- Issue #4583: array.array would not always prohibit resizing when a buffer
664 has been exported, resulting in an interpreter crash when accessing the
665 buffer.
666
Martin v. Löwis841edad2008-11-30 10:36:49 +0000667
Guilherme Polo9de29af2009-01-28 20:40:48 +0000668Tests
669-----
670
671- Issue #5083: New 'gui' resource for regrtest.
672
673
Brett Cannon7317c1e2008-11-25 19:19:17 +0000674Docs
675----
676
Georg Brandl52b92cc2008-05-25 09:43:03 +0000677
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000678**(For information about older versions, consult the HISTORY file.)**