blob: f0dafcb8caf12f33f9b95a4f301b929a1fa18c31 [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
Benjamin Peterson09832742009-03-26 17:15:46 +000015- Issue #5126: str.isprintable() returned False for space characters.
16
Antoine Pitrou3a652b12009-03-23 18:52:06 +000017- Issue #4688: Add a heuristic so that tuples and dicts containing only
18 untrackable objects are not tracked by the garbage collector. This can
19 reduce the size of collections and therefore the garbage collection overhead
20 on long-running programs, depending on their particular use of datatypes.
21
Mark Dickinson17e4fdd2009-03-23 18:44:57 +000022- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
23 improve its performance. Long divisions and remainder operations
24 are now between 50% and 150% faster.
25
Mark Dickinsonbd792642009-03-18 20:06:12 +000026- Issue #4258: Make it possible to use base 2**30 instead of base
27 2**15 for the internal representation of integers, for performance
28 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
29 --enable-big-digits option to configure, which overrides the
30 default. Add sys.int_info structseq to provide information about
31 the internal format.
32
Mark Dickinson081dfee2009-03-18 14:47:41 +000033- Issue #4474: PyUnicode_FromWideChar now converts characters outside
34 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
35 and sizeof(Py_UNICODE) == 2.
36
Eric Smith8ec90442009-03-14 12:29:34 +000037- Issue #5237: Allow auto-numbered fields in str.format(). For
38 example: '{} {}'.format(1, 2) == '1 2'.
39
Antoine Pitrou652e7072009-03-13 19:25:20 +000040- Issue #5392: when a very low recursion limit was set, the interpreter would
41 abort with a fatal error after the recursion limit was hit twice.
42
Benjamin Petersond1735892009-03-07 18:46:21 +000043Library
44-------
45
Jesse Noller7af4ef82009-03-30 16:47:15 +000046- Issue #5177: Multiprocessing's SocketListener class now uses
47 socket.SO_REUSEADDR on all connections so that the user no longer needs
48 to wait 120 seconds for the socket to expire.
49
Benjamin Peterson48e24782009-03-29 13:02:52 +000050- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
51
Antoine Pitrou66994e12009-03-29 00:45:26 +000052- Issue #1174606: Calling read() without arguments of an unbounded file
53 (typically /dev/zero under Unix) could crash the interpreter.
54
Benjamin Peterson59406a92009-03-26 17:10:29 +000055- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
56 io.BufferedRandom have been deprecated for removal in Python 3.2.
57
Lars Gustäbel42e00912009-03-22 20:34:29 +000058- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
59 forever on incomplete input. That caused tarfile.open() to hang when used
60 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
61 partial bzip2 compressed data.
62
Mark Dickinson79f52032009-03-17 23:12:51 +000063- Issue #2110: Add support for thousands separator and 'n' type
64 specifier to Decimal.__format__
65
Mark Dickinson9c59fe02009-03-17 18:15:08 +000066- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
67 '>' alignment characters.
68
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +000069- The error detection code in FileIO.close() could fail to reflect the `errno`
70 value, and report it as -1 instead.
71
Antoine Pitroua28fcfd2009-03-13 23:42:55 +000072- Issue #5016: FileIO.seekable() could return False if the file position
73 was negative when truncated to a C int. Patch by Victor Stinner.
74
Mark Dickinsonae681df2009-03-21 10:26:31 +000075Extension Modules
76-----------------
77
78- Issue #5463: In struct module, remove deprecated overflow wrapping
79 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +000080 struct.error instead of returning b'\xff\xff\xff\xff'. The
81 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
82 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +000083
Benjamin Petersond1735892009-03-07 18:46:21 +000084
Benjamin Petersona58a6262009-03-07 16:34:40 +000085What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +000086================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000087
Benjamin Petersona58a6262009-03-07 16:34:40 +000088*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000089
90Core and Builtins
91-----------------
92
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +000093- The io module has been reimplemented in C for speed.
94
Raymond Hettingerb0d56af2009-03-03 10:52:49 +000095- Give dict views an informative __repr__.
96
Eric Smith5e5c0db2009-02-20 14:25:03 +000097- Issue #5247: Improve error message when unknown format codes are
98 used when using str.format() with str, int, and float arguments.
99
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000100- Issue #5249: time.strftime returned malformed string when format string
101 contained non ascii character on windows.
102
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000103- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
104 source has already been decoded into str.
105
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000106- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
107 rotating the object pointer by 4 bits to the right.
108
Mark Dickinson87ec0852009-02-09 17:15:59 +0000109- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
110 it now forces its argument to double before testing for infinity.
111
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000112- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
113 returns a non-number type.
114
Benjamin Peterson87618552009-02-08 15:00:52 +0000115- Issue #5182: Removed memoryview.__str__.
116
Mark Dickinsonc008a172009-02-01 13:59:22 +0000117- Issue #1717: Removed builtin cmp() function, dropped tp_compare
118 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000119 the type definition cmpfunc. The tp_compare slot has been renamed
120 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000121
Raymond Hettingere8364232009-02-02 22:55:09 +0000122- Issue 1242657: the __len__() and __length_hint__() calls in several tools
123 were suppressing all exceptions. These include list() and bytearray().
124
Mark Dickinson1124e712009-01-28 21:25:58 +0000125- Issue #4707: round(x, n) now returns an integer if x is an integer.
126 Previously it returned a float.
127
Antoine Pitroub52ec782009-01-25 16:34:23 +0000128- Issue #4753: By enabling a configure option named '--with-computed-gotos'
129 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
130 evaluation loop is compiled with a new dispatch mechanism which gives
131 speedups of up to 20%, depending on the system, on various benchmarks.
132
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000133- Issue #4874: Most builtin decoders now reject unicode input.
134
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000135- Issue #4842: Don't allow trailing 'L' when constructing an integer
136 from a string.
137
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000138- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
139
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000140- Issue #4838: When a module is deallocated, free the memory backing the
141 optional module state data.
142
Mark Dickinson8055afd2009-01-17 10:04:45 +0000143- Issue #4910: Rename nb_long slot to nb_reserved, and change its
144 type to (void *).
145
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000146- Issue #4935: The overflow checking code in the expandtabs() method common
147 to str, bytes and bytearray could be optimized away by the compiler, letting
148 the interpreter segfault instead of raising an error.
149
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000150- Issue #3720: Fix a crash when an iterator modifies its class and removes its
151 __next__ method.
152
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000153- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
154 function no longer attempt to call the __long__ slot to convert an object
155 to an integer. Only the __int__ and __trunc__ slots are examined.
156
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000157- Issue #4893: Use NT threading on CE.
158
Martin v. Löwisec59d042009-01-12 07:59:10 +0000159- Issue #4915: Port sysmodule to Windows CE.
160
Antoine Pitrouab868312009-01-10 15:40:25 +0000161- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
162 common cases are optimized thanks to a dedicated fast path and a moderate
163 amount of loop unrolling.
164
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000165- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
166 collecting the oldest generation) so that allocating lots of objects without
167 destroying them does not show quadratic performance. Based on a proposal by
168 Martin von Löwis at
169 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
170
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000171- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000172 having been closed (for instance, a read() call could return some
173 previously buffered data). Patch by Dmitry Vasiliev.
174
Antoine Pitrou05608432009-01-09 18:53:14 +0000175- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
176 flag to work properly. Furthermore, when specifying -u, the text stdout
177 and stderr streams have line-by-line buffering enabled (the default being
178 to buffer arbitrary chunks of data).
179
Raymond Hettinger35631532009-01-09 03:58:09 +0000180- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
181 instead of ints (reducing its size from 4 to 8 times thereby reducing
182 Python's overall memory).
183
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000184- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
185 an existing .py counterpart, override the co_filename attributes of all
186 code objects if the original filename is obsolete (which can happen if the
187 file has been renamed, moved, or if it is accessed through different paths).
188 Patch by Ziga Seilnacht and Jean-Paul Calderone.
189
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000190- Issue #4580: Fix slicing of memoryviews when the item size is greater than
191 one byte. Also fixes the meaning of len() so that it returns the number of
192 items, rather than the size in bytes.
193
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000194- Issue #4075: Use OutputDebugStringW in Py_FatalError.
195
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000196- Issue #4747: When the terminal does not use utf-8, executing a script with
197 non-ascii characters in its name could fail with a "SyntaxError: None" error.
198
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000199- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000200 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000201
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000202- Issue #3680: Reference cycles created through a dict, set or deque iterator
203 did not get collected.
204
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000205- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
206 where the tp_hash and tp_dict slots are both NULL.
207
Georg Brandlccc47b62008-12-28 11:44:14 +0000208- Issue #4759: None is now allowed as the first argument of
209 bytearray.translate(). It was always allowed for bytes.translate().
210
Skip Montanaro80072cb2008-12-23 03:51:14 +0000211- Added test case to ensure attempts to read from a file opened for writing
212 fail.
213
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000214- Issue #3106: Speedup some comparisons (str/str and int/int).
215
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000216- Issue #2183: Simplify and optimize bytecode for list, dict and set
217 comprehensions. Original patch for list comprehensions by Neal Norwitz.
218
Antoine Pitrou621601a2008-12-17 23:18:19 +0000219- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
220 print elapsed times, not only when some objects are uncollectable /
221 unreachable. Original patch by Neil Schemenauer.
222
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000223- Issue #3439: Add a bit_length method to int.
224
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000225- Issue #2173: When getting device encoding, check that return value of
226 nl_langinfo is not the empty string. This was causing silent build
227 failures on OS X.
228
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000229- Issue #4597: Fixed several opcodes that weren't always propagating
230 exceptions.
231
232- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000233 context manager returns a value that cannot be converted to a bool.
234
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000235- Issue #4445: Replace "sizeof(PyBytesObject)" with
236 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
237 bytes instances. On a typical machine this saves 3 bytes of memory
238 (on average) per allocation of a bytes instance.
239
Christian Heimesa872de52008-12-05 08:26:55 +0000240- Issue #4533: File read operation was dreadfully slow due to a slowly
241 growing read buffer. Fixed by using the same growth rate algorithm as
242 Python 2.x.
243
Antoine Pitrou5504e892008-12-06 21:27:53 +0000244- Issue #4509: Various issues surrounding resize of bytearray objects to
245 which there are buffer exports (e.g. memoryview instances).
246
Georg Brandlf9734072008-12-07 15:30:06 +0000247- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
248 method on file objects with closefd=False. The file descriptor is still
249 kept open but the file object behaves like a closed file. The ``FileIO``
250 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000251
Antoine Pitroubc420402008-12-07 20:14:49 +0000252- Issue #4569: Interpreter crash when mutating a memoryview with an item size
253 larger than 1.
254
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000255- Issue #4748: Lambda generators no longer return a value.
256
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000257- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
258
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000259Library
260-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000261
Antoine Pitrou350370c2009-03-14 00:13:13 +0000262- Issue #1222: locale.format() bug when the thousands separator is a space
263 character.
264
Tarek Ziadé516db942009-03-11 12:52:00 +0000265- Issue #5472: Fixed distutils.test_util tear down. Original patch by
266 Tim Golden.
267
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000268- collections.deque() objects now have a read-only attribute called maxlen.
269
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000270- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
271 it is has been populated and properly configured in order to prevent
272 window flashing.
273
Guilherme Polo56f5be52009-03-07 01:54:57 +0000274- Issue #4792: Prevent a segfault in _tkinter by using the
275 guaranteed to be safe interp argument given to the PythonCmd in place of
276 the Tcl interpreter taken from a PythonCmd_ClientData.
277
278- Issue #5193: Guarantee that tkinter.Text.search returns a string.
279
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000280- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
281 Original patch by Akira Kitada.
282
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000283- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
284
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000285- Issue #5385: Fixed mmap crash after resize failure on windows.
286
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000287- Issue #5179: Fixed subprocess handle leak on failure on windows.
288
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000289- PEP 372: Added collections.OrderedDict().
290
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000291- The _asdict() for method for namedtuples now returns an OrderedDict().
292
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000293- configparser now defaults to using an ordered dictionary.
294
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000295- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
296 import guess_extension`` was used.
297
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000298- Issue #1733986: Fixed mmap crash in accessing elements of second map object
299 with same tagname but larger size than first map. (Windows)
300
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000301- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
302 overrun.
303
Tarek Ziadéf0721222009-02-28 10:16:43 +0000304- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
305 bdist_rpm command.
306
307- Issue #5378: added --quiet option to Distutils bdist_rpm command.
308
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000309- Issue #5052: make Distutils compatible with 2.3 again.
310
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000311- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
312 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000313
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000314- Issue #5287: Add exception handling around findCaller() call to help out
315 IronPython.
316
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000317- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
318 The file was resized to wrong size.
319
320- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
321
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000322- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000323 from the package_data and the data_files metadata.
324
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000325- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000326 support.TempdirManager, to avoid writing in the tests directory.
327
Tarek Ziadé68c50952009-02-13 23:04:17 +0000328- Issue #4524: distutils build_script command failed with --with-suffix=3.
329 Initial patch by Amaury Forgeot d'Arc.
330
Tarek Ziadé811d6242009-02-13 22:26:15 +0000331- Issue #2461: added tests for distutils.util
332
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000333- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
334 which inherited from numbers.py which did not have __slots__ defined. The
335 numbers hierarchy now has its own __slots__ declarations.
336
Antoine Pitroub353c122009-02-11 00:39:14 +0000337- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
338 encoding.
339
Thomas Heller465c8022009-02-10 18:59:04 +0000340- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
341 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
342
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000343- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
344 under NT and OS2. Patch by Philip Jenvey.
345
Brett Cannonbefb14f2009-02-10 02:10:16 +0000346- Issue #5128: Make compileall properly inspect bytecode to determine if needs
347 to be recreated. This avoids a timing hole thanks to the old reliance on the
348 ctime of the files involved.
349
Guilherme Polob681df42009-02-09 22:33:59 +0000350- Issue #5122: Synchronize tk load failure check to prevent a potential
351 deadlock.
352
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000353- Issue #1818: collections.namedtuple() now supports a keyword argument
354 'rename' which lets invalid fieldnames be automatically converted to
355 positional names in the form, _1, _2, ...
356
Guilherme Poloae098992009-02-09 16:44:24 +0000357- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
358
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000359- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
360 public documented method ``ZipImporter.get_filename()``.
361
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000362- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
363 the execution of packages by looking for and executing a ``__main__``
364 submodule when a package name is supplied. Initial patch by Andi
365 Vajda.
366
Guilherme Polo491aee22009-02-06 23:16:11 +0000367- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
368 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
369 Tkapp_Call when calling from a thread different than the one that created
370 the Tcl interpreter. Patch by Robert Hancock.
371
Eric Smith0e5b5622009-02-06 01:32:42 +0000372- Issue #4285: Change sys.version_info to be a named tuple. Patch by
373 Ross Light.
374
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000375- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000376 environment/Makefile. Patch by Douglas Greiman.
377
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000378- Issue #1276768: The verbose option was not used in the code of
379 distutils.file_util and distutils.dir_util.
380
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000381- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000382 --enabled-shared activated. Initial patch by Dave Peterson.
383
Guilherme Polo7f423952009-02-02 21:17:09 +0000384- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
385
Raymond Hettinger85602262009-02-03 04:19:10 +0000386- The shelve module now defaults to pickle protocol 3.
387
Brett Cannone61426e2009-01-30 01:31:34 +0000388- Fix a bug in the trace module where a bytes object from co_lnotab had its
389 items being passed through ord().
390
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000391- Issue #2047: shutil.move() could believe that its destination path was
392 inside its source path if it began with the same letters (e.g. "src" vs.
393 "src.new").
394
Guilherme Polo5f238482009-01-28 14:41:10 +0000395- Added the ttk module. See issue #2983: Ttk support for Tkinter.
396
Raymond Hettinger89e12962009-01-26 02:09:03 +0000397- Removed isSequenceType(), isMappingType, and isNumberType() from the
398 operator module; use the abstract base classes instead. Also removed
399 the repeat() function; use mul() instead.
400
Raymond Hettinger0f055172009-01-27 10:06:09 +0000401- Issue 5021: doctest.testfile() did not create __name__ and
402 collections.namedtuple() relied on __name__ being defined.
403
404- Backport importlib from Python 3.1. Only the import_module() function has
405 been backported to help facilitate transitions from 2.7 to 3.1.
406
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000407- Issue #1885: distutils. When running sdist with --formats=tar,gztar
408 the tar file was overriden by the gztar one.
409
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000410- Issue #4863: distutils.mwerkscompiler has been removed.
411
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000412- Added a new itertools functions: combinations_with_replacement()
413 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000414
Raymond Hettinger30729212009-02-12 06:28:27 +0000415- Issue 5032: added a step argument to itertools.count() and
416 allowed non-integer arguments.
417
Jesse Noller41faa542009-01-25 03:45:53 +0000418- Fix and properly document the multiprocessing module's logging
419 support, expose the internal levels and provide proper usage
420 examples.
421
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000422- Issue #1672332: fix unpickling of subnormal floats, which was
423 producing a ValueError on some platforms.
424
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000425- Issue #3881: Help Tcl to load even when started through the
426 unreadable local symlink to "Program Files" on Vista.
427
Martin v. Löwis59e47792009-01-24 14:10:07 +0000428- Issue #4710: Extract directories properly in the zipfile module;
429 allow adding directories to a zipfile.
430
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000431- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000432 --without-threads argument. When this occurs, _multiprocessing will
433 be disabled, and not compiled.
434
Antoine Pitrou08838b62009-01-21 00:55:13 +0000435- Issue #5008: When a file is opened in append mode with the new IO library,
436 do an explicit seek to the end of file (so that e.g. tell() returns the
437 file size rather than 0). This is consistent with the behaviour of the
438 traditional 2.x file object.
439
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000440- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
441 parameter was set.
442
Mark Dickinson8dd05142009-01-20 20:43:58 +0000443- Issue #4842: Always append a trailing 'L' when pickling longs using
444 pickle protocol 0. When reading, the 'L' is optional.
445
Brett Cannonafccd632009-01-20 02:21:27 +0000446- Add the importlib package.
447
Jesse Noller9a0fc972009-01-18 21:12:58 +0000448- Issue #4301: Patch the logging module to add processName support, remove
449 _check_logger_class from multiprocessing.
450
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000451- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000452 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000453
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000454- Issue #4959: inspect.formatargspec now works for keyword only arguments
455 without defaults.
456
Jesse Noller6214edd2009-01-19 16:23:53 +0000457- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
458 for *nix machines for negative handles and large int handles. Without this check
459 it is possible to segfault the interpreter.
460
Jesse Nollerb0516a62009-01-18 03:11:38 +0000461- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
462 in sharedctypes.py.
463
464- Issue #1225107: inspect.isclass() returned True for instances with a custom
465 __getattr__.
466
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000467- Issue #3826 and #4791: The socket module now closes the underlying socket
468 appropriately when it is being used via socket.makefile() objects
469 rather than delaying the close by waiting for garbage collection to do it.
470
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000471- Issue #1696199: Add collections.Counter() for rapid and convenient
472 counting.
473
Antoine Pitrou308705e2009-01-10 16:22:51 +0000474- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
475
Thomas Heller5e4e4272009-01-08 09:34:20 +0000476- Issue #4867: Fixed a crash in ctypes when passing a string to a
477 function without defining argtypes.
478
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000479- Issue #4272: Add an optional argument to the GzipFile constructor to override
480 the timestamp in the gzip stream. The default value remains the current time.
481 The information can be used by e.g. gunzip when decompressing. Patch by
482 Jacques Frechet.
483
Mark Dickinson315a20a2009-01-04 21:34:18 +0000484- Restore Python 2.3 compatibility for decimal.py.
485
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000486- Issue #3638: Remove functions from _tkinter module level that depend on
487 TkappObject to work with multiple threads.
488
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000489- Issue #4718: Adapt the wsgiref package so that it actually works with
490 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000491 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
492
Raymond Hettinger771ed762009-01-03 19:20:32 +0000493- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
494 to the decimal module.
495
Georg Brandl3a9b0622009-01-03 22:07:57 +0000496- Fractions.from_float() no longer loses precision for integers too big to
497 cast as floats.
498
Mark Dickinsonf9236412009-01-02 23:23:21 +0000499- Issue #4812: add missing underscore prefix to some internal-use-only
500 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
501
Georg Brandl3a9b0622009-01-03 22:07:57 +0000502- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
503 did unnecessary work in the common case where no key function was specified.
504
Georg Brandlb1441c72009-01-03 22:33:39 +0000505- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
506 the function is not a generator.
507
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000508- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
509 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000510
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000511- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000512 function. Original patch by Thomas Heller.
513
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000514- Issue #3767: Convert Tk object to string in tkColorChooser.
515
Martin v. Löwise354d782008-12-29 16:03:04 +0000516- Issue #3248: Allow placing ScrolledText in a PanedWindow.
517
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000518- Issue #4444: Allow assertRaises() to be used as a context handler, so that
519 the code under test can be written inline if more practical.
520
Georg Brandldb7b6b92009-01-01 15:53:14 +0000521- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
522 works as expected in the interactive environment.
523
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000524- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
525 Gabriel Genellina.
526
Antoine Pitrou180a3362008-12-14 16:36:46 +0000527- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
528 boundary.
529
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000530- Issue #4223: inspect.getsource() will now correctly display source code
531 for packages loaded via zipimport (or any other conformant PEP 302
532 loader). Original patch by Alexander Belopolsky.
533
534- Issue #4201: pdb can now access and display source code loaded via
535 zipimport (or any other conformant PEP 302 loader). Original patch by
536 Alexander Belopolsky.
537
538- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
539 302 conformant loader) will now work correctly in most cases (they
540 are still subject to the constraints that exist for all code running
541 from inside a module loaded via a PEP 302 loader and attempting to
542 perform IO operations based on __file__). Original patch by
543 Alexander Belopolsky.
544
545- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
546 allows backporting to maintenance branches. Original patch by
547 Alexander Belopolsky.
548
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000549- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
550 a non-ASCII letter.
551
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000552- Issue #4616: TarFile.utime(): Restore directory times on Windows.
553
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000554- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
555 codec cannot be found. This is for compatibility with the builtin behavior.
556
Facundo Batista708d5812008-12-11 04:20:07 +0000557- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
558 give correct results in the case where one argument is a quiet NaN
559 and the other is a finite number that requires rounding.
560
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000561- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
562 libs.
563
Georg Brandlf9734072008-12-07 15:30:06 +0000564- Added the subprocess.check_call_output() convenience function to get output
565 from a subprocess on success or raise an exception on error.
566
567- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
568 support unusual filenames (such as those containing semi-colons) in
569 Content-Disposition headers.
570
571- Issue #4384: Added logging integration with warnings module using
572 captureWarnings(). This change includes a NullHandler which does nothing;
573 it will be of use to library developers who want to avoid the "No handlers
574 could be found for logger XXX" message which can appear if the library user
575 doesn't configure logging.
576
577- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
578 exception.
579
Georg Brandleee31162008-12-07 15:15:22 +0000580- Issue #4529: fix the parser module's validation of try-except-finally
581 statements.
582
583- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
584 not a malformed option.
585
586- Added the subprocess.check_output() convenience function to get output
587 from a subprocess on success or raise an exception on error.
588
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000589- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
590 the corresponding tests now pass.
591
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000592- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
593 it was calling the wrong open() function.
594
Fred Drake9a0a65b2008-12-04 19:24:50 +0000595- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
596 support unusual filenames (such as those containing semi-colons) in
597 Content-Disposition headers.
598
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000599- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
600 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
601
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000602- Issue #5104: The socket module now raises OverflowError when 16-bit port and
603 protocol numbers are supplied outside the allowed 0-65536 range on bind()
604 and getservbyport().
605
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000606Tools/Demos
607-----------
608
Antoine Pitrou8a681222009-02-07 17:13:31 +0000609- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
610 and make it 2.6-compatible.
611
Guilherme Poloa7d27972009-01-28 16:06:51 +0000612- Ttk demos added in Demo/tkinter/ttk/
613
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000614- Issue #4677: add two list comprehension tests to pybench.
615
Georg Brandlb1441c72009-01-03 22:33:39 +0000616
617Build
618-----
619
Matthias Klose906785c2009-02-22 23:18:38 +0000620- Link the shared python library with $(MODLIBS).
621
Martin v. Löwis11f72102009-02-10 13:13:30 +0000622- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
623
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000624- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
625
Martin v. Löwise97637d2009-01-11 09:45:11 +0000626- Issue #4895: Use _strdup on Windows CE.
627
Georg Brandlb1441c72009-01-03 22:33:39 +0000628- Issue #4472: "configure --enable-shared" now works on OSX
629
630- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
631
632- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
633
634- Issue #4289: Remove Cancel button from AdvancedDlg.
635
636- Issue #1656675: Register a drop handler for .py* files on Windows.
637
638- Issue #4120: Exclude manifest from extension modules in VS2008.
639
640- Issue #4091: Install pythonxy.dll in system32 again.
641
642- Issue #4018: Disable "for me" installations on Vista.
643
644- Issue #3758: Add ``patchcheck`` build target to .PHONY.
645
646- Issue #4204: Fixed module build errors on FreeBSD 4.
647
648
649C-API
650-----
651
Mark Dickinson21776072009-02-10 16:13:25 +0000652- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
653 for negative arguments. Previously, it raised TypeError.
654
Georg Brandlb1441c72009-01-03 22:33:39 +0000655- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
656
657- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
658 the GIL is released, or owned by another thread.
659
660- Issue #4122: On Windows, fix a compilation error when using the
661 Py_UNICODE_ISSPACE macro in an extension module.
662
663
Mark Dickinsone675f082008-12-11 21:56:00 +0000664Extension Modules
665-----------------
666
Gregory P. Smith365a1862009-02-12 07:35:29 +0000667- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
668 supporting objects as input no matter how it was compiled (built in
669 implementations or external openssl library).
670
Mark Dickinson29500f62009-01-15 15:36:10 +0000671- Issue #4397: Fix occasional test_socket failure on OS X.
672
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000673- Issue #4279: Fix build of parsermodule under Cygwin.
674
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000675- Issue #4751: hashlib now releases the GIL when hashing large buffers
676 (with a hardwired threshold of 2048 bytes), allowing better parallelization
677 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
678
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000679- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
680
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000681- Issue #4738: Each zlib object now has a separate lock, allowing to compress
682 or decompress several streams at once on multi-CPU systems. Also, the GIL
683 is now released when computing the CRC of a large buffer. Patch by ebfe.
684
Georg Brandlb1441c72009-01-03 22:33:39 +0000685- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
686
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000687- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
688
Mark Dickinsone675f082008-12-11 21:56:00 +0000689- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
690 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000691
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000692- Issue #4583: array.array would not always prohibit resizing when a buffer
693 has been exported, resulting in an interpreter crash when accessing the
694 buffer.
695
Martin v. Löwis841edad2008-11-30 10:36:49 +0000696
Guilherme Polo9de29af2009-01-28 20:40:48 +0000697Tests
698-----
699
700- Issue #5083: New 'gui' resource for regrtest.
701
702
Brett Cannon7317c1e2008-11-25 19:19:17 +0000703Docs
704----
705
Georg Brandl52b92cc2008-05-25 09:43:03 +0000706
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000707**(For information about older versions, consult the HISTORY file.)**