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Ronald Oussorenfa1fcd12009-03-30 23:16:10 +00001+++++++++++ Python News
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00002+++++++++++
3
Anthony Baxterb0c66302004-11-04 05:23:17 +00004(editors: check NEWS.help for information about editing NEWS using ReST.)
5
Benjamin Petersond1735892009-03-07 18:46:21 +00006What's New in Python 3.1 alpha 2?
7=================================
8
9*Release date: XXX*
10
11Core and Builtins
12-----------------
13
Guido van Rossum0ad59d42009-03-30 22:01:35 +000014- Issue #5604: non-ASCII characters in module name passed to
15 imp.find_module() were converted to UTF-8 while the path is
16 converted to the default filesystem encoding, causing nonsense.
17
Benjamin Peterson09832742009-03-26 17:15:46 +000018- Issue #5126: str.isprintable() returned False for space characters.
19
Ronald Oussorenfa1fcd12009-03-30 23:16:10 +000020- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
21 the end sys.path, for compatibility with the system install of Python.
22
Antoine Pitrou3a652b12009-03-23 18:52:06 +000023- Issue #4688: Add a heuristic so that tuples and dicts containing only
24 untrackable objects are not tracked by the garbage collector. This can
25 reduce the size of collections and therefore the garbage collection overhead
26 on long-running programs, depending on their particular use of datatypes.
27
Mark Dickinson17e4fdd2009-03-23 18:44:57 +000028- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
29 improve its performance. Long divisions and remainder operations
30 are now between 50% and 150% faster.
31
Mark Dickinsonbd792642009-03-18 20:06:12 +000032- Issue #4258: Make it possible to use base 2**30 instead of base
33 2**15 for the internal representation of integers, for performance
34 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
35 --enable-big-digits option to configure, which overrides the
36 default. Add sys.int_info structseq to provide information about
37 the internal format.
38
Mark Dickinson081dfee2009-03-18 14:47:41 +000039- Issue #4474: PyUnicode_FromWideChar now converts characters outside
40 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
41 and sizeof(Py_UNICODE) == 2.
42
Eric Smith8ec90442009-03-14 12:29:34 +000043- Issue #5237: Allow auto-numbered fields in str.format(). For
44 example: '{} {}'.format(1, 2) == '1 2'.
45
Antoine Pitrou652e7072009-03-13 19:25:20 +000046- Issue #5392: when a very low recursion limit was set, the interpreter would
47 abort with a fatal error after the recursion limit was hit twice.
48
Benjamin Petersond1735892009-03-07 18:46:21 +000049Library
50-------
51
Brett Cannon7f6b4f82009-03-30 21:30:26 +000052- Issue #5236: Change time.strptime() to only take strings. Didn't work with
53 bytes already but the failure was non-obvious.
54
Jesse Noller7af4ef82009-03-30 16:47:15 +000055- Issue #5177: Multiprocessing's SocketListener class now uses
56 socket.SO_REUSEADDR on all connections so that the user no longer needs
57 to wait 120 seconds for the socket to expire.
58
Benjamin Peterson48e24782009-03-29 13:02:52 +000059- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
60
Antoine Pitrou66994e12009-03-29 00:45:26 +000061- Issue #1174606: Calling read() without arguments of an unbounded file
62 (typically /dev/zero under Unix) could crash the interpreter.
63
Benjamin Peterson59406a92009-03-26 17:10:29 +000064- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
65 io.BufferedRandom have been deprecated for removal in Python 3.2.
66
Lars Gustäbel42e00912009-03-22 20:34:29 +000067- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
68 forever on incomplete input. That caused tarfile.open() to hang when used
69 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
70 partial bzip2 compressed data.
71
Mark Dickinson79f52032009-03-17 23:12:51 +000072- Issue #2110: Add support for thousands separator and 'n' type
73 specifier to Decimal.__format__
74
Mark Dickinson9c59fe02009-03-17 18:15:08 +000075- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
76 '>' alignment characters.
77
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +000078- The error detection code in FileIO.close() could fail to reflect the `errno`
79 value, and report it as -1 instead.
80
Antoine Pitroua28fcfd2009-03-13 23:42:55 +000081- Issue #5016: FileIO.seekable() could return False if the file position
82 was negative when truncated to a C int. Patch by Victor Stinner.
83
Mark Dickinsonae681df2009-03-21 10:26:31 +000084Extension Modules
85-----------------
86
87- Issue #5463: In struct module, remove deprecated overflow wrapping
88 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +000089 struct.error instead of returning b'\xff\xff\xff\xff'. The
90 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
91 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +000092
Benjamin Petersond1735892009-03-07 18:46:21 +000093
Benjamin Petersona58a6262009-03-07 16:34:40 +000094What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +000095================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000096
Benjamin Petersona58a6262009-03-07 16:34:40 +000097*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000098
99Core and Builtins
100-----------------
101
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +0000102- The io module has been reimplemented in C for speed.
103
Raymond Hettingerb0d56af2009-03-03 10:52:49 +0000104- Give dict views an informative __repr__.
105
Eric Smith5e5c0db2009-02-20 14:25:03 +0000106- Issue #5247: Improve error message when unknown format codes are
107 used when using str.format() with str, int, and float arguments.
108
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000109- Issue #5249: time.strftime returned malformed string when format string
110 contained non ascii character on windows.
111
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000112- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
113 source has already been decoded into str.
114
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000115- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
116 rotating the object pointer by 4 bits to the right.
117
Mark Dickinson87ec0852009-02-09 17:15:59 +0000118- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
119 it now forces its argument to double before testing for infinity.
120
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000121- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
122 returns a non-number type.
123
Benjamin Peterson87618552009-02-08 15:00:52 +0000124- Issue #5182: Removed memoryview.__str__.
125
Mark Dickinsonc008a172009-02-01 13:59:22 +0000126- Issue #1717: Removed builtin cmp() function, dropped tp_compare
127 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000128 the type definition cmpfunc. The tp_compare slot has been renamed
129 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000130
Raymond Hettingere8364232009-02-02 22:55:09 +0000131- Issue 1242657: the __len__() and __length_hint__() calls in several tools
132 were suppressing all exceptions. These include list() and bytearray().
133
Mark Dickinson1124e712009-01-28 21:25:58 +0000134- Issue #4707: round(x, n) now returns an integer if x is an integer.
135 Previously it returned a float.
136
Antoine Pitroub52ec782009-01-25 16:34:23 +0000137- Issue #4753: By enabling a configure option named '--with-computed-gotos'
138 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
139 evaluation loop is compiled with a new dispatch mechanism which gives
140 speedups of up to 20%, depending on the system, on various benchmarks.
141
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000142- Issue #4874: Most builtin decoders now reject unicode input.
143
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000144- Issue #4842: Don't allow trailing 'L' when constructing an integer
145 from a string.
146
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000147- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
148
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000149- Issue #4838: When a module is deallocated, free the memory backing the
150 optional module state data.
151
Mark Dickinson8055afd2009-01-17 10:04:45 +0000152- Issue #4910: Rename nb_long slot to nb_reserved, and change its
153 type to (void *).
154
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000155- Issue #4935: The overflow checking code in the expandtabs() method common
156 to str, bytes and bytearray could be optimized away by the compiler, letting
157 the interpreter segfault instead of raising an error.
158
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000159- Issue #3720: Fix a crash when an iterator modifies its class and removes its
160 __next__ method.
161
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000162- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
163 function no longer attempt to call the __long__ slot to convert an object
164 to an integer. Only the __int__ and __trunc__ slots are examined.
165
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000166- Issue #4893: Use NT threading on CE.
167
Martin v. Löwisec59d042009-01-12 07:59:10 +0000168- Issue #4915: Port sysmodule to Windows CE.
169
Antoine Pitrouab868312009-01-10 15:40:25 +0000170- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
171 common cases are optimized thanks to a dedicated fast path and a moderate
172 amount of loop unrolling.
173
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000174- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
175 collecting the oldest generation) so that allocating lots of objects without
176 destroying them does not show quadratic performance. Based on a proposal by
177 Martin von Löwis at
178 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
179
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000180- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000181 having been closed (for instance, a read() call could return some
182 previously buffered data). Patch by Dmitry Vasiliev.
183
Antoine Pitrou05608432009-01-09 18:53:14 +0000184- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
185 flag to work properly. Furthermore, when specifying -u, the text stdout
186 and stderr streams have line-by-line buffering enabled (the default being
187 to buffer arbitrary chunks of data).
188
Raymond Hettinger35631532009-01-09 03:58:09 +0000189- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
190 instead of ints (reducing its size from 4 to 8 times thereby reducing
191 Python's overall memory).
192
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000193- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
194 an existing .py counterpart, override the co_filename attributes of all
195 code objects if the original filename is obsolete (which can happen if the
196 file has been renamed, moved, or if it is accessed through different paths).
197 Patch by Ziga Seilnacht and Jean-Paul Calderone.
198
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000199- Issue #4580: Fix slicing of memoryviews when the item size is greater than
200 one byte. Also fixes the meaning of len() so that it returns the number of
201 items, rather than the size in bytes.
202
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000203- Issue #4075: Use OutputDebugStringW in Py_FatalError.
204
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000205- Issue #4747: When the terminal does not use utf-8, executing a script with
206 non-ascii characters in its name could fail with a "SyntaxError: None" error.
207
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000208- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000209 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000210
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000211- Issue #3680: Reference cycles created through a dict, set or deque iterator
212 did not get collected.
213
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000214- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
215 where the tp_hash and tp_dict slots are both NULL.
216
Georg Brandlccc47b62008-12-28 11:44:14 +0000217- Issue #4759: None is now allowed as the first argument of
218 bytearray.translate(). It was always allowed for bytes.translate().
219
Skip Montanaro80072cb2008-12-23 03:51:14 +0000220- Added test case to ensure attempts to read from a file opened for writing
221 fail.
222
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000223- Issue #3106: Speedup some comparisons (str/str and int/int).
224
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000225- Issue #2183: Simplify and optimize bytecode for list, dict and set
226 comprehensions. Original patch for list comprehensions by Neal Norwitz.
227
Antoine Pitrou621601a2008-12-17 23:18:19 +0000228- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
229 print elapsed times, not only when some objects are uncollectable /
230 unreachable. Original patch by Neil Schemenauer.
231
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000232- Issue #3439: Add a bit_length method to int.
233
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000234- Issue #2173: When getting device encoding, check that return value of
235 nl_langinfo is not the empty string. This was causing silent build
236 failures on OS X.
237
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000238- Issue #4597: Fixed several opcodes that weren't always propagating
239 exceptions.
240
241- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000242 context manager returns a value that cannot be converted to a bool.
243
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000244- Issue #4445: Replace "sizeof(PyBytesObject)" with
245 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
246 bytes instances. On a typical machine this saves 3 bytes of memory
247 (on average) per allocation of a bytes instance.
248
Christian Heimesa872de52008-12-05 08:26:55 +0000249- Issue #4533: File read operation was dreadfully slow due to a slowly
250 growing read buffer. Fixed by using the same growth rate algorithm as
251 Python 2.x.
252
Antoine Pitrou5504e892008-12-06 21:27:53 +0000253- Issue #4509: Various issues surrounding resize of bytearray objects to
254 which there are buffer exports (e.g. memoryview instances).
255
Georg Brandlf9734072008-12-07 15:30:06 +0000256- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
257 method on file objects with closefd=False. The file descriptor is still
258 kept open but the file object behaves like a closed file. The ``FileIO``
259 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000260
Antoine Pitroubc420402008-12-07 20:14:49 +0000261- Issue #4569: Interpreter crash when mutating a memoryview with an item size
262 larger than 1.
263
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000264- Issue #4748: Lambda generators no longer return a value.
265
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000266- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
267
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000268Library
269-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000270
Antoine Pitrou350370c2009-03-14 00:13:13 +0000271- Issue #1222: locale.format() bug when the thousands separator is a space
272 character.
273
Tarek Ziadé516db942009-03-11 12:52:00 +0000274- Issue #5472: Fixed distutils.test_util tear down. Original patch by
275 Tim Golden.
276
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000277- collections.deque() objects now have a read-only attribute called maxlen.
278
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000279- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
280 it is has been populated and properly configured in order to prevent
281 window flashing.
282
Guilherme Polo56f5be52009-03-07 01:54:57 +0000283- Issue #4792: Prevent a segfault in _tkinter by using the
284 guaranteed to be safe interp argument given to the PythonCmd in place of
285 the Tcl interpreter taken from a PythonCmd_ClientData.
286
287- Issue #5193: Guarantee that tkinter.Text.search returns a string.
288
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000289- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
290 Original patch by Akira Kitada.
291
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000292- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
293
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000294- Issue #5385: Fixed mmap crash after resize failure on windows.
295
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000296- Issue #5179: Fixed subprocess handle leak on failure on windows.
297
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000298- PEP 372: Added collections.OrderedDict().
299
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000300- The _asdict() for method for namedtuples now returns an OrderedDict().
301
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000302- configparser now defaults to using an ordered dictionary.
303
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000304- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
305 import guess_extension`` was used.
306
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000307- Issue #1733986: Fixed mmap crash in accessing elements of second map object
308 with same tagname but larger size than first map. (Windows)
309
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000310- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
311 overrun.
312
Tarek Ziadéf0721222009-02-28 10:16:43 +0000313- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
314 bdist_rpm command.
315
316- Issue #5378: added --quiet option to Distutils bdist_rpm command.
317
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000318- Issue #5052: make Distutils compatible with 2.3 again.
319
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000320- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
321 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000322
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000323- Issue #5287: Add exception handling around findCaller() call to help out
324 IronPython.
325
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000326- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
327 The file was resized to wrong size.
328
329- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
330
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000331- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000332 from the package_data and the data_files metadata.
333
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000334- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000335 support.TempdirManager, to avoid writing in the tests directory.
336
Tarek Ziadé68c50952009-02-13 23:04:17 +0000337- Issue #4524: distutils build_script command failed with --with-suffix=3.
338 Initial patch by Amaury Forgeot d'Arc.
339
Tarek Ziadé811d6242009-02-13 22:26:15 +0000340- Issue #2461: added tests for distutils.util
341
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000342- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
343 which inherited from numbers.py which did not have __slots__ defined. The
344 numbers hierarchy now has its own __slots__ declarations.
345
Antoine Pitroub353c122009-02-11 00:39:14 +0000346- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
347 encoding.
348
Thomas Heller465c8022009-02-10 18:59:04 +0000349- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
350 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
351
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000352- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
353 under NT and OS2. Patch by Philip Jenvey.
354
Brett Cannonbefb14f2009-02-10 02:10:16 +0000355- Issue #5128: Make compileall properly inspect bytecode to determine if needs
356 to be recreated. This avoids a timing hole thanks to the old reliance on the
357 ctime of the files involved.
358
Guilherme Polob681df42009-02-09 22:33:59 +0000359- Issue #5122: Synchronize tk load failure check to prevent a potential
360 deadlock.
361
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000362- Issue #1818: collections.namedtuple() now supports a keyword argument
363 'rename' which lets invalid fieldnames be automatically converted to
364 positional names in the form, _1, _2, ...
365
Guilherme Poloae098992009-02-09 16:44:24 +0000366- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
367
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000368- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
369 public documented method ``ZipImporter.get_filename()``.
370
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000371- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
372 the execution of packages by looking for and executing a ``__main__``
373 submodule when a package name is supplied. Initial patch by Andi
374 Vajda.
375
Guilherme Polo491aee22009-02-06 23:16:11 +0000376- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
377 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
378 Tkapp_Call when calling from a thread different than the one that created
379 the Tcl interpreter. Patch by Robert Hancock.
380
Eric Smith0e5b5622009-02-06 01:32:42 +0000381- Issue #4285: Change sys.version_info to be a named tuple. Patch by
382 Ross Light.
383
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000384- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000385 environment/Makefile. Patch by Douglas Greiman.
386
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000387- Issue #1276768: The verbose option was not used in the code of
388 distutils.file_util and distutils.dir_util.
389
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000390- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000391 --enabled-shared activated. Initial patch by Dave Peterson.
392
Guilherme Polo7f423952009-02-02 21:17:09 +0000393- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
394
Raymond Hettinger85602262009-02-03 04:19:10 +0000395- The shelve module now defaults to pickle protocol 3.
396
Brett Cannone61426e2009-01-30 01:31:34 +0000397- Fix a bug in the trace module where a bytes object from co_lnotab had its
398 items being passed through ord().
399
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000400- Issue #2047: shutil.move() could believe that its destination path was
401 inside its source path if it began with the same letters (e.g. "src" vs.
402 "src.new").
403
Guilherme Polo5f238482009-01-28 14:41:10 +0000404- Added the ttk module. See issue #2983: Ttk support for Tkinter.
405
Raymond Hettinger89e12962009-01-26 02:09:03 +0000406- Removed isSequenceType(), isMappingType, and isNumberType() from the
407 operator module; use the abstract base classes instead. Also removed
408 the repeat() function; use mul() instead.
409
Raymond Hettinger0f055172009-01-27 10:06:09 +0000410- Issue 5021: doctest.testfile() did not create __name__ and
411 collections.namedtuple() relied on __name__ being defined.
412
413- Backport importlib from Python 3.1. Only the import_module() function has
414 been backported to help facilitate transitions from 2.7 to 3.1.
415
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000416- Issue #1885: distutils. When running sdist with --formats=tar,gztar
417 the tar file was overriden by the gztar one.
418
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000419- Issue #4863: distutils.mwerkscompiler has been removed.
420
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000421- Added a new itertools functions: combinations_with_replacement()
422 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000423
Raymond Hettinger30729212009-02-12 06:28:27 +0000424- Issue 5032: added a step argument to itertools.count() and
425 allowed non-integer arguments.
426
Jesse Noller41faa542009-01-25 03:45:53 +0000427- Fix and properly document the multiprocessing module's logging
428 support, expose the internal levels and provide proper usage
429 examples.
430
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000431- Issue #1672332: fix unpickling of subnormal floats, which was
432 producing a ValueError on some platforms.
433
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000434- Issue #3881: Help Tcl to load even when started through the
435 unreadable local symlink to "Program Files" on Vista.
436
Martin v. Löwis59e47792009-01-24 14:10:07 +0000437- Issue #4710: Extract directories properly in the zipfile module;
438 allow adding directories to a zipfile.
439
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000440- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000441 --without-threads argument. When this occurs, _multiprocessing will
442 be disabled, and not compiled.
443
Antoine Pitrou08838b62009-01-21 00:55:13 +0000444- Issue #5008: When a file is opened in append mode with the new IO library,
445 do an explicit seek to the end of file (so that e.g. tell() returns the
446 file size rather than 0). This is consistent with the behaviour of the
447 traditional 2.x file object.
448
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000449- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
450 parameter was set.
451
Mark Dickinson8dd05142009-01-20 20:43:58 +0000452- Issue #4842: Always append a trailing 'L' when pickling longs using
453 pickle protocol 0. When reading, the 'L' is optional.
454
Brett Cannonafccd632009-01-20 02:21:27 +0000455- Add the importlib package.
456
Jesse Noller9a0fc972009-01-18 21:12:58 +0000457- Issue #4301: Patch the logging module to add processName support, remove
458 _check_logger_class from multiprocessing.
459
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000460- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000461 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000462
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000463- Issue #4959: inspect.formatargspec now works for keyword only arguments
464 without defaults.
465
Jesse Noller6214edd2009-01-19 16:23:53 +0000466- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
467 for *nix machines for negative handles and large int handles. Without this check
468 it is possible to segfault the interpreter.
469
Jesse Nollerb0516a62009-01-18 03:11:38 +0000470- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
471 in sharedctypes.py.
472
473- Issue #1225107: inspect.isclass() returned True for instances with a custom
474 __getattr__.
475
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000476- Issue #3826 and #4791: The socket module now closes the underlying socket
477 appropriately when it is being used via socket.makefile() objects
478 rather than delaying the close by waiting for garbage collection to do it.
479
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000480- Issue #1696199: Add collections.Counter() for rapid and convenient
481 counting.
482
Antoine Pitrou308705e2009-01-10 16:22:51 +0000483- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
484
Thomas Heller5e4e4272009-01-08 09:34:20 +0000485- Issue #4867: Fixed a crash in ctypes when passing a string to a
486 function without defining argtypes.
487
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000488- Issue #4272: Add an optional argument to the GzipFile constructor to override
489 the timestamp in the gzip stream. The default value remains the current time.
490 The information can be used by e.g. gunzip when decompressing. Patch by
491 Jacques Frechet.
492
Mark Dickinson315a20a2009-01-04 21:34:18 +0000493- Restore Python 2.3 compatibility for decimal.py.
494
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000495- Issue #3638: Remove functions from _tkinter module level that depend on
496 TkappObject to work with multiple threads.
497
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000498- Issue #4718: Adapt the wsgiref package so that it actually works with
499 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000500 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
501
Raymond Hettinger771ed762009-01-03 19:20:32 +0000502- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
503 to the decimal module.
504
Georg Brandl3a9b0622009-01-03 22:07:57 +0000505- Fractions.from_float() no longer loses precision for integers too big to
506 cast as floats.
507
Mark Dickinsonf9236412009-01-02 23:23:21 +0000508- Issue #4812: add missing underscore prefix to some internal-use-only
509 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
510
Georg Brandl3a9b0622009-01-03 22:07:57 +0000511- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
512 did unnecessary work in the common case where no key function was specified.
513
Georg Brandlb1441c72009-01-03 22:33:39 +0000514- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
515 the function is not a generator.
516
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000517- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
518 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000519
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000520- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000521 function. Original patch by Thomas Heller.
522
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000523- Issue #3767: Convert Tk object to string in tkColorChooser.
524
Martin v. Löwise354d782008-12-29 16:03:04 +0000525- Issue #3248: Allow placing ScrolledText in a PanedWindow.
526
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000527- Issue #4444: Allow assertRaises() to be used as a context handler, so that
528 the code under test can be written inline if more practical.
529
Georg Brandldb7b6b92009-01-01 15:53:14 +0000530- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
531 works as expected in the interactive environment.
532
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000533- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
534 Gabriel Genellina.
535
Antoine Pitrou180a3362008-12-14 16:36:46 +0000536- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
537 boundary.
538
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000539- Issue #4223: inspect.getsource() will now correctly display source code
540 for packages loaded via zipimport (or any other conformant PEP 302
541 loader). Original patch by Alexander Belopolsky.
542
543- Issue #4201: pdb can now access and display source code loaded via
544 zipimport (or any other conformant PEP 302 loader). Original patch by
545 Alexander Belopolsky.
546
547- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
548 302 conformant loader) will now work correctly in most cases (they
549 are still subject to the constraints that exist for all code running
550 from inside a module loaded via a PEP 302 loader and attempting to
551 perform IO operations based on __file__). Original patch by
552 Alexander Belopolsky.
553
554- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
555 allows backporting to maintenance branches. Original patch by
556 Alexander Belopolsky.
557
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000558- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
559 a non-ASCII letter.
560
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000561- Issue #4616: TarFile.utime(): Restore directory times on Windows.
562
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000563- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
564 codec cannot be found. This is for compatibility with the builtin behavior.
565
Facundo Batista708d5812008-12-11 04:20:07 +0000566- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
567 give correct results in the case where one argument is a quiet NaN
568 and the other is a finite number that requires rounding.
569
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000570- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
571 libs.
572
Georg Brandlf9734072008-12-07 15:30:06 +0000573- Added the subprocess.check_call_output() convenience function to get output
574 from a subprocess on success or raise an exception on error.
575
576- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
577 support unusual filenames (such as those containing semi-colons) in
578 Content-Disposition headers.
579
580- Issue #4384: Added logging integration with warnings module using
581 captureWarnings(). This change includes a NullHandler which does nothing;
582 it will be of use to library developers who want to avoid the "No handlers
583 could be found for logger XXX" message which can appear if the library user
584 doesn't configure logging.
585
586- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
587 exception.
588
Georg Brandleee31162008-12-07 15:15:22 +0000589- Issue #4529: fix the parser module's validation of try-except-finally
590 statements.
591
592- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
593 not a malformed option.
594
595- Added the subprocess.check_output() convenience function to get output
596 from a subprocess on success or raise an exception on error.
597
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000598- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
599 the corresponding tests now pass.
600
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000601- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
602 it was calling the wrong open() function.
603
Fred Drake9a0a65b2008-12-04 19:24:50 +0000604- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
605 support unusual filenames (such as those containing semi-colons) in
606 Content-Disposition headers.
607
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000608- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
609 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
610
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000611- Issue #5104: The socket module now raises OverflowError when 16-bit port and
612 protocol numbers are supplied outside the allowed 0-65536 range on bind()
613 and getservbyport().
614
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000615Tools/Demos
616-----------
617
Antoine Pitrou8a681222009-02-07 17:13:31 +0000618- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
619 and make it 2.6-compatible.
620
Guilherme Poloa7d27972009-01-28 16:06:51 +0000621- Ttk demos added in Demo/tkinter/ttk/
622
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000623- Issue #4677: add two list comprehension tests to pybench.
624
Georg Brandlb1441c72009-01-03 22:33:39 +0000625
626Build
627-----
628
Matthias Klose906785c2009-02-22 23:18:38 +0000629- Link the shared python library with $(MODLIBS).
630
Martin v. Löwis11f72102009-02-10 13:13:30 +0000631- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
632
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000633- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
634
Martin v. Löwise97637d2009-01-11 09:45:11 +0000635- Issue #4895: Use _strdup on Windows CE.
636
Georg Brandlb1441c72009-01-03 22:33:39 +0000637- Issue #4472: "configure --enable-shared" now works on OSX
638
639- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
640
641- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
642
643- Issue #4289: Remove Cancel button from AdvancedDlg.
644
645- Issue #1656675: Register a drop handler for .py* files on Windows.
646
647- Issue #4120: Exclude manifest from extension modules in VS2008.
648
649- Issue #4091: Install pythonxy.dll in system32 again.
650
651- Issue #4018: Disable "for me" installations on Vista.
652
653- Issue #3758: Add ``patchcheck`` build target to .PHONY.
654
655- Issue #4204: Fixed module build errors on FreeBSD 4.
656
657
658C-API
659-----
660
Mark Dickinson21776072009-02-10 16:13:25 +0000661- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
662 for negative arguments. Previously, it raised TypeError.
663
Georg Brandlb1441c72009-01-03 22:33:39 +0000664- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
665
666- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
667 the GIL is released, or owned by another thread.
668
669- Issue #4122: On Windows, fix a compilation error when using the
670 Py_UNICODE_ISSPACE macro in an extension module.
671
672
Mark Dickinsone675f082008-12-11 21:56:00 +0000673Extension Modules
674-----------------
675
Gregory P. Smith365a1862009-02-12 07:35:29 +0000676- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
677 supporting objects as input no matter how it was compiled (built in
678 implementations or external openssl library).
679
Mark Dickinson29500f62009-01-15 15:36:10 +0000680- Issue #4397: Fix occasional test_socket failure on OS X.
681
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000682- Issue #4279: Fix build of parsermodule under Cygwin.
683
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000684- Issue #4751: hashlib now releases the GIL when hashing large buffers
685 (with a hardwired threshold of 2048 bytes), allowing better parallelization
686 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
687
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000688- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
689
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000690- Issue #4738: Each zlib object now has a separate lock, allowing to compress
691 or decompress several streams at once on multi-CPU systems. Also, the GIL
692 is now released when computing the CRC of a large buffer. Patch by ebfe.
693
Georg Brandlb1441c72009-01-03 22:33:39 +0000694- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
695
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000696- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
697
Mark Dickinsone675f082008-12-11 21:56:00 +0000698- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
699 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000700
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000701- Issue #4583: array.array would not always prohibit resizing when a buffer
702 has been exported, resulting in an interpreter crash when accessing the
703 buffer.
704
Martin v. Löwis841edad2008-11-30 10:36:49 +0000705
Guilherme Polo9de29af2009-01-28 20:40:48 +0000706Tests
707-----
708
709- Issue #5083: New 'gui' resource for regrtest.
710
711
Brett Cannon7317c1e2008-11-25 19:19:17 +0000712Docs
713----
714
Georg Brandl52b92cc2008-05-25 09:43:03 +0000715
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000716**(For information about older versions, consult the HISTORY file.)**