blob: da8cdf500c782b1d8ed15efcc6a5a54cbbc56af5 [file] [log] [blame]
Georg Brandlab6f2f62009-03-31 04:16:10 +00001+++++++++++
2Python News
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00003+++++++++++
4
Anthony Baxterb0c66302004-11-04 05:23:17 +00005(editors: check NEWS.help for information about editing NEWS using ReST.)
6
Benjamin Petersone8fb2032009-06-27 22:03:18 +00007What's New in Python 3.1.1?
8===========================
9
Benjamin Peterson54cda442009-08-13 15:47:36 +000010*Release date: 2009-08-13*
Benjamin Petersone8fb2032009-06-27 22:03:18 +000011
12Core and Builtins
13-----------------
14
Benjamin Peterson044446b2009-08-15 13:25:28 +000015- Issue #6707: dir() on an uninitialized module caused a crash.
16
Georg Brandl069bcc32009-07-22 12:06:11 +000017- Issue #6540: Fixed crash for bytearray.translate() with invalid parameters.
18
Raymond Hettinger63853bb2009-07-27 20:29:18 +000019- Issue #6573: set.union() stopped processing inputs if an instance of self
20 occurred in the argument chain.
21
R. David Murray10fc3952009-07-19 02:25:02 +000022- Issue #6070: On posix platforms import no longer copies the execute bit
23 from the .py file to the .pyc file if it is set.
24
Amaury Forgeot d'Arc79fa5ab2009-07-07 00:45:43 +000025- Issue #6428: Since Python 3.0, the __bool__ method must return a bool
26 object, and not an int. Fix the corresponding error message, and the
27 documentation.
28
Mark Dickinson8c1e2942009-06-30 15:46:37 +000029- Issue #6347: Include inttypes.h as well as stdint.h in pyport.h.
30 This fixes a build failure on HP-UX: int32_t and uint32_t are
31 defined in inttypes.h instead of stdint.h on that platform.
32
Amaury Forgeot d'Arc41a28732009-07-01 00:50:34 +000033- Issue #6373: Fixed a SystemError when encoding with the latin-1 codec and
Amaury Forgeot d'Arce5344d62009-06-29 22:38:54 +000034 the 'surrogateescape' error handler, a string which contains unpaired
35 surrogates.
36
Benjamin Petersone39d5d52009-07-02 22:02:15 +000037C-API
38-----
39
Georg Brandl878c3b02009-08-13 08:36:43 +000040- Issue #6624: yArg_ParseTuple with "s" format when parsing argument with
41 NUL: Bogus TypeError detail string.
42
Antoine Pitrou992d3d12009-08-06 21:01:42 +000043- Issue #6405: Remove duplicate type declarations in descrobject.h.
Benjamin Petersonb166ffd2009-07-03 13:33:17 +000044
Benjamin Petersone39d5d52009-07-02 22:02:15 +000045- The code flags for old __future__ features are now available again.
46
Benjamin Petersone8fb2032009-06-27 22:03:18 +000047Library
48-------
49
Mark Dickinson7a6bcce2009-08-28 13:44:35 +000050- Issue #6794: Fix Decimal.compare_total and Decimal.compare_total_mag: NaN
51 payloads are now ordered by integer value rather than lexicographically.
52
Georg Brandle6700e92009-08-13 08:39:33 +000053- Issue #6106: telnetlib.Telnet.process_rawq doesn't handle default WILL/WONT
54 DO/DONT correctly.
55
Georg Brandl8a038b22009-08-13 07:52:08 +000056- Issue #6126: Fixed pdb command-line usage.
57
Antoine Pitrou0473e562009-08-06 20:52:43 +000058- Issue #6629: Fix a data corruption issue in the new I/O library, which could
59 occur when writing to a BufferedRandom object (e.g. a file opened in "rb+" or
60 "wb+" mode) after having buffered a certain amount of data for reading. This
61 bug was not present in the pure Python implementation.
62
Mark Dickinson825b9932009-08-06 16:08:07 +000063- Issue #6622: Fix "local variable 'secret' referenced before
64 assignment" bug in POP3.apop.
65
Raymond Hettinger99a13ee2009-08-04 19:13:37 +000066- Issue #6637: defaultdict.copy() did not work when the default factory
67 was left unspecified. Also, the eval/repr round-trip would fail when
68 the default_factory was None.
69
Mark Dickinson34776ca2009-08-02 20:09:59 +000070- Issue #2715: Remove remnants of Carbon.File from binhex module.
71
Mark Dickinson8d238292009-08-02 10:16:33 +000072- Issue #6595: The Decimal constructor now allows arbitrary Unicode
Georg Brandle6700e92009-08-13 08:39:33 +000073decimal digits in input, as recommended by the standard. Previously
74it was restricted to accepting [0-9].
Mark Dickinson8d238292009-08-02 10:16:33 +000075
R. David Murraya44c6b32009-07-29 15:40:30 +000076- Issues #5155, #5313, #5331: multiprocessing.Process._bootstrap was
Georg Brandle6700e92009-08-13 08:39:33 +000077unconditionally calling "os.close(sys.stdin.fileno())" resulting in file
78descriptor errors
R. David Murraya44c6b32009-07-29 15:40:30 +000079
Senthil Kumaran0ac1f832009-07-26 12:39:47 +000080- Issue #1424152: Fix for http.client, urllib.request to support SSL while
Georg Brandle6700e92009-08-13 08:39:33 +000081working through proxy. Original patch by Christopher Li, changes made by
82Senthil Kumaran
Senthil Kumaran0ac1f832009-07-26 12:39:47 +000083
Brett Cannon2e3155e2009-07-20 03:22:43 +000084- importlib.abc.PyLoader did not inherit from importlib.abc.ResourceLoader like
Georg Brandle6700e92009-08-13 08:39:33 +000085the documentation said it did even though the code in PyLoader relied on the
86abstract method required by ResourceLoader.
Brett Cannon2e3155e2009-07-20 03:22:43 +000087
Mark Dickinson8d156432009-07-18 14:43:10 +000088- Issue #6431: Make Fraction type return NotImplemented when it doesn't
Georg Brandle6700e92009-08-13 08:39:33 +000089know how to handle a comparison without loss of precision. Also add
90correct handling of infinities and nans for comparisons with float.
Mark Dickinson8d156432009-07-18 14:43:10 +000091
Antoine Pitrou992d3d12009-08-06 21:01:42 +000092- Issue #6415: Fixed warnings.warn segfault on bad formatted string.
Hirokazu Yamamoto680ac292009-07-17 07:02:18 +000093
Amaury Forgeot d'Arc041b3ba2009-07-11 09:37:09 +000094- Issue #6358: The exit status of a command started with os.popen() was
Georg Brandle6700e92009-08-13 08:39:33 +000095reported differently than it did with python 2.x.
Amaury Forgeot d'Arc041b3ba2009-07-11 09:37:09 +000096
Amaury Forgeot d'Arcd31d4f22009-07-09 23:20:02 +000097- Issue #6323: The pdb debugger did not exit when running a script with a
Georg Brandle6700e92009-08-13 08:39:33 +000098syntax error.
Amaury Forgeot d'Arcd31d4f22009-07-09 23:20:02 +000099
Georg Brandlae83d6e2009-08-13 09:04:31 +0000100- Issue #3392: The subprocess communicate() method no longer fails in select()
101 when file descriptors are large; communicate() now uses poll() when possible.
102
Antoine Pitrou53f4ed72009-07-01 15:03:38 +0000103- Issue #6369: Fix an RLE decompression bug in the binhex module.
104
Hirokazu Yamamoto4e82f2d2009-06-29 15:02:36 +0000105- Issue #6344: Fixed a crash of mmap.read() when passed a negative argument.
106
Georg Brandlae83d6e2009-08-13 09:04:31 +0000107- Issue #4005: Fixed a crash of pydoc when there was a zip file present in
108 sys.path.
109
110Extension Modules
111-----------------
112
Brett Cannon0c811072009-08-13 19:59:04 +0000113- Fix a segfault in expat.
114
Georg Brandlae83d6e2009-08-13 09:04:31 +0000115- Issue #4509: array.array objects are no longer modified after an operation
116 failing due to the resize restriction in-place when the object has exported
117 buffers.
118
Martin v. Löwis9d49c1d2009-06-28 09:40:34 +0000119Build
120-----
121
Amaury Forgeot d'Arc7e077242009-07-02 23:57:11 +0000122- Issue 4601: 'make install' did not set the appropriate permissions on
Georg Brandle6700e92009-08-13 08:39:33 +0000123directories.
Amaury Forgeot d'Arc7e077242009-07-02 23:57:11 +0000124
Martin v. Löwis9d49c1d2009-06-28 09:40:34 +0000125- Issue 5390: Add uninstall icon independent of whether file
Georg Brandle6700e92009-08-13 08:39:33 +0000126extensions are installed.
Martin v. Löwis9d49c1d2009-06-28 09:40:34 +0000127
Tarek Ziadéb08c3a82009-08-21 14:25:49 +0000128Documentation
129-------------
130
131- Issue #6556: Fixed the Distutils configuration files location explanation
132 for Windows.
133
Brett Cannon10e35b32009-07-20 00:19:49 +0000134Test
135----
136
137- Fix a test in importlib.test.source.test_abc_loader that was incorrectly
Georg Brandle6700e92009-08-13 08:39:33 +0000138testing when a .pyc file lacked an code object bytecode.
Brett Cannon10e35b32009-07-20 00:19:49 +0000139
Benjamin Petersone8fb2032009-06-27 22:03:18 +0000140
Benjamin Peterson01bf2362009-06-13 14:50:22 +0000141What's New in Python 3.1?
142=========================
143
144*Release date: 27-June-2009*
145
146Core and Builtins
147-----------------
148
Mark Dickinsonad195562009-06-24 19:01:32 +0000149- Issue #6334: Fix bug in range length calculation for ranges with
Georg Brandle6700e92009-08-13 08:39:33 +0000150large arguments.
Mark Dickinsonad195562009-06-24 19:01:32 +0000151
Raymond Hettinger159eac92009-06-23 20:38:54 +0000152- Issue #6329: Fixed iteration for memoryview objects (it was being blocked
Georg Brandle6700e92009-08-13 08:39:33 +0000153because it wasn't recognized as a sequence).
Raymond Hettinger159eac92009-06-23 20:38:54 +0000154
Benjamin Peterson01bf2362009-06-13 14:50:22 +0000155Library
156-------
157
Vinay Sajip0f6eac22009-06-21 17:46:49 +0000158- Issue #6314: logging.basicConfig() performs extra checks on the "level"
Georg Brandle6700e92009-08-13 08:39:33 +0000159argument.
Vinay Sajip0f6eac22009-06-21 17:46:49 +0000160
Facundo Batista10706e22009-06-19 20:34:30 +0000161- Issue #6274: Fixed possible file descriptors leak in subprocess.py
162
Benjamin Peterson6a38ced2009-06-14 18:32:19 +0000163- Accessing io.StringIO.buffer now raises an AttributeError instead of
Georg Brandle6700e92009-08-13 08:39:33 +0000164io.UnsupportedOperation.
Benjamin Peterson6a38ced2009-06-14 18:32:19 +0000165
Vinay Sajip0f6eac22009-06-21 17:46:49 +0000166- Issue #6271: mmap tried to close invalid file handle (-1) when anonymous.
Georg Brandle6700e92009-08-13 08:39:33 +0000167(On Unix)
Hirokazu Yamamoto3d8827d2009-06-14 04:58:16 +0000168
Gregory P. Smithe88749b2009-06-26 08:05:13 +0000169- Issue #1202: zipfile module would cause a struct.error when attempting to
Georg Brandle6700e92009-08-13 08:39:33 +0000170store files with a CRC32 > 2**31-1.
Gregory P. Smithe88749b2009-06-26 08:05:13 +0000171
Matthias Kloseab2b7552009-06-22 13:05:52 +0000172Extension Modules
173-----------------
174
175- Issue #5590: Remove unused global variable in pyexpat extension.
176
Benjamin Peterson01bf2362009-06-13 14:50:22 +0000177
Antoine Pitrou3b1b8072009-05-30 21:01:23 +0000178What's New in Python 3.1 Release Candidate 2?
179=============================================
Benjamin Peterson54e8ddf2009-05-30 18:43:49 +0000180
Benjamin Petersonc7c12282009-06-13 13:15:04 +0000181*Release date: 13-June-2009*
Benjamin Peterson54e8ddf2009-05-30 18:43:49 +0000182
183Core and Builtins
184-----------------
185
Raymond Hettinger94f55832009-06-12 18:40:16 +0000186- Fixed SystemError triggered by "range([], 1, -1)".
187
Amaury Forgeot d'Arc66f8c432009-06-09 21:30:01 +0000188- Issue #5924: On Windows, a large PYTHONPATH environment variable
Georg Brandle6700e92009-08-13 08:39:33 +0000189(more than 255 characters) would be completely ignored.
Amaury Forgeot d'Arc66f8c432009-06-09 21:30:01 +0000190
Amaury Forgeot d'Arc24e581f2009-06-01 21:28:37 +0000191- Issue #4547: When debugging a very large function, it was not always
Georg Brandle6700e92009-08-13 08:39:33 +0000192possible to update the lineno attribute of the current frame.
Amaury Forgeot d'Arc24e581f2009-06-01 21:28:37 +0000193
Antoine Pitrou8e124f32009-05-30 21:41:10 +0000194- Issue #5330: C functions called with keyword arguments were not reported by
Georg Brandlb75111c2009-08-13 12:27:52 +0000195 the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.
Antoine Pitrou8e124f32009-05-30 21:41:10 +0000196
Benjamin Peterson54e8ddf2009-05-30 18:43:49 +0000197Library
198-------
199
Tarek Ziadé41fe2822009-07-12 08:39:08 +0000200- Issue #6438: Fixed distutils.cygwinccompiler.get_versions : the regular
Georg Brandle6700e92009-08-13 08:39:33 +0000201expression string pattern was trying to match against a bytes returned by
202Popen. Tested under win32 to build the py-postgresql project.
Tarek Ziadé41fe2822009-07-12 08:39:08 +0000203
Martin v. Löwis83eacca2009-06-12 17:31:41 +0000204- Issue #6258: Support AMD64 in bdist_msi.
205
R. David Murray58641de2009-06-12 15:33:19 +0000206- Issue #6195: fixed doctest to no longer try to read 'source' data from
Georg Brandle6700e92009-08-13 08:39:33 +0000207binary files.
R. David Murray58641de2009-06-12 15:33:19 +0000208
Vinay Sajipaffbd872009-06-11 10:11:47 +0000209- Issue #5262: Fixed bug in next rollover time computation in
Georg Brandle6700e92009-08-13 08:39:33 +0000210TimedRotatingFileHandler.
Vinay Sajipaffbd872009-06-11 10:11:47 +0000211
Benjamin Peterson0926ad12009-06-06 18:02:12 +0000212- Issue #6217: The C implementation of io.TextIOWrapper didn't include the
Georg Brandle6700e92009-08-13 08:39:33 +0000213errors property. Additionally, the errors and encoding properties of StringIO
214are always None now.
Benjamin Peterson0926ad12009-06-06 18:02:12 +0000215
Antoine Pitroud9dfaa92009-06-04 20:32:06 +0000216- Issue #6137: The pickle module now translates module names when loading
Georg Brandle6700e92009-08-13 08:39:33 +0000217or dumping pickles with a 2.x-compatible protocol, in order to make data
218sharing and migration easier. This behaviour can be disabled using the
219new `fix_imports` optional argument.
Antoine Pitroud9dfaa92009-06-04 20:32:06 +0000220
Raymond Hettinger40925d22009-06-04 18:32:39 +0000221- Removed the ipaddr module.
222
Georg Brandlb54d8012009-06-04 09:11:51 +0000223- Issue #3613: base64.{encode,decode}string are now called
Georg Brandle6700e92009-08-13 08:39:33 +0000224base64.{encode,decode}bytes which reflects what type they accept and return.
225The old names are still there as deprecated aliases.
Georg Brandlb54d8012009-06-04 09:11:51 +0000226
Georg Brandl317185a2009-06-04 09:00:56 +0000227- Issue #5767: Remove sgmlop support from xmlrpc.client.
228
Martin v. Löwis74b7e442009-06-01 04:23:07 +0000229- Issue #6150: Fix test_unicode on wide-unicode builds.
230
Antoine Pitrouc06de472009-05-30 21:04:26 +0000231- Issue #6149: Fix initialization of WeakValueDictionary objects from non-empty
Georg Brandle6700e92009-08-13 08:39:33 +0000232parameters.
Antoine Pitrouc06de472009-05-30 21:04:26 +0000233
Martin v. Löwis79b13872009-06-01 04:13:14 +0000234Windows
235-------
236
Martin v. Löwisb7a51562009-06-07 17:55:17 +0000237- Issue #6221: Delete test registry key before running the test.
238
Martin v. Löwis79b13872009-06-01 04:13:14 +0000239- Issue #6158: Package Sine-1000Hz-300ms.aif in MSI file.
240
Amaury Forgeot d'Arc11729992009-06-01 21:16:17 +0000241C-API
242-----
243
244- Issue #5735: Python compiled with --with-pydebug should throw an
245 ImportError when trying to import modules compiled without
246 --with-pydebug, and vice-versa.
247
Benjamin Peterson54e8ddf2009-05-30 18:43:49 +0000248
Brett Cannonc6d936e2009-06-07 20:09:53 +0000249Build
250-----
251
252- Issue #6154: Make sure the intl library is added to LIBS if needed. Also
253 added LIBS to OS X framework builds.
254
Ronald Oussoren99aab652009-06-08 21:22:57 +0000255- Issue #5809: Specifying both --enable-framework and --enable-shared is
256 an error. Configure now explicity tells you about this.
257
258
Brett Cannonc6d936e2009-06-07 20:09:53 +0000259
Mark Dickinson4eb88b32009-05-11 16:41:34 +0000260What's New in Python 3.1 release candidate 1?
261=============================================
Benjamin Petersonaccdca52009-05-06 23:26:59 +0000262
Benjamin Petersone6ad3872009-05-30 15:30:16 +0000263*Release date: 2009-05-30*
Benjamin Petersonaccdca52009-05-06 23:26:59 +0000264
265Core and Builtins
266-----------------
267
Martin v. Löwis8ed91b22009-05-29 16:22:26 +0000268- Issue #6097: Escape UTF-8 surrogates resulting from mbstocs conversion
269 of the command line.
270
Martin v. Löwisc15bdef2009-05-29 14:47:46 +0000271- Issue #6012: Add cleanup support to O& argument parsing.
272
Eric Smith41669ca2009-05-23 14:23:22 +0000273- Issue #6089: Fixed str.format with certain invalid field specifiers
274 that would raise SystemError.
275
Raymond Hettinger2bcde142009-05-29 04:52:27 +0000276- Issue #5982: staticmethod and classmethod now expose the wrapped
277 function with __func__.
278
Raymond Hettinger91e3b9d2009-05-28 22:20:03 +0000279- Added support for multiple context managers in the same with-statement.
280 Deprecated contextlib.nested() which is no longer needed.
Georg Brandl0c315622009-05-25 21:10:36 +0000281
Mark Dickinson6b1e43b2009-05-20 18:41:04 +0000282- Issue #5829: complex("1e500") no longer raises OverflowError. This
283 makes it consistent with float("1e500") and interpretation of real
284 and imaginary literals.
285
Hirokazu Yamamoto8223c242009-05-17 04:21:53 +0000286- Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
287
R. David Murraydd226ea2009-05-13 12:27:21 +0000288- Issue #5994: the marshal module now has docstrings.
289
Mark Dickinsond1ec8b22009-05-11 15:45:15 +0000290- Issue #5981: Fix three minor inf/nan issues in float.fromhex:
291 (1) inf and nan strings with trailing whitespace were incorrectly
292 rejected; (2) parsing of strings representing infinities and nans
293 was locale aware; and (3) the interpretation of fromhex('-nan')
294 didn't match that of float('-nan').
295
Benjamin Petersonaccdca52009-05-06 23:26:59 +0000296Library
297-------
298
Martin v. Löwisb6a748b2009-05-29 15:23:17 +0000299- Issue #4859: Implement PEP 383 for pwd, spwd, and grp.
300
R. David Murrayfb123912009-05-28 18:19:00 +0000301- smtplib 'login' and 'cram-md5' login are also fixed (see Issue #5259).
302
R. David Murray1f1b9d32009-05-27 20:56:59 +0000303- Issue #6121: pydoc now ignores leading and trailing spaces in the
304 argument to the 'help' function.
305
Georg Brandlfaf41492009-05-26 18:31:11 +0000306- Issue #6118: urllib.parse.quote_plus ignored the encoding and errors
307 arguments for strings with a space in them.
308
Raymond Hettinger089ba7f2009-05-27 00:38:24 +0000309- collections.namedtuple() was not working with the following field
310 names: cls, self, tuple, itemgetter, and property.
311
Benjamin Peterson14a3dd72009-05-25 00:51:58 +0000312- In unittest, using a skipping decorator on a class is now equivalent to
313 skipping every test on the class. The ClassTestSuite class has been removed.
314
Martin v. Löwis70ccd162009-05-24 19:47:22 +0000315- Issue #6050: Don't fail extracting a directory from a zipfile if
316 the directory already exists.
317
Antoine Pitrou61f77b52009-05-24 15:46:13 +0000318- Issue #1309352: fcntl now converts its third arguments to a C `long` rather
319 than an int, which makes some operations possible under 64-bit Linux (e.g.
320 DN_MULTISHOT with F_NOTIFY).
321
Antoine Pitrou716c4442009-05-23 19:04:03 +0000322- Issue #5761: Add the name of the underlying file to the repr() of various
323 IO objects.
324
R. David Murraycaa27b72009-05-23 18:49:56 +0000325- Issue #5259: smtplib plain auth login no longer gives a traceback. Fix
326 by Musashi Tamura, tests by Marcin Bachry.
327
Antoine Pitrouc3ee1662009-05-23 16:02:33 +0000328- Issue #1983: Fix functions taking or returning a process identifier to use
329 the dedicated C type ``pid_t`` instead of a C ``int``. Some platforms have
330 a process identifier type wider than the standard C integer type.
331
R. David Murray87e20742009-05-23 01:30:26 +0000332- Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket.
333 Patch by Farhan Ahmad, test by Marcin Bachry.
334
Antoine Pitrou6e610062009-05-15 17:04:50 +0000335- Issue #2116: Weak references and weak dictionaries now support copy()ing and
336 deepcopy()ing.
337
Antoine Pitrouc1d09362009-05-15 12:15:51 +0000338- Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
339
Antoine Pitrou37d1c182009-05-14 21:54:00 +0000340- Issue #5918: Fix a crash in the parser module.
341
Antoine Pitrou2ca24f02009-05-14 21:30:46 +0000342- Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
343
Antoine Pitroue4501852009-05-14 18:55:55 +0000344- Issue #5006: Better handling of unicode byte-order marks (BOM) in the io
345 library. This means, for example, that opening an UTF-16 text file in
346 append mode doesn't add a BOM at the end of the file if the file isn't
347 empty.
348
R. David Murray74b89242009-05-13 17:33:03 +0000349- Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
350 file is a binary. Patch by Brodie Rao, tests by Daniel Diniz. This fix
351 corrects a pydoc regression.
352
R. David Murray99352742009-05-07 18:24:38 +0000353- Issue 5955: aifc's close method did not close the file it wrapped,
354 now it does. This also means getfp method now returns the real fp.
355
Benjamin Peterson932073a2009-05-23 16:14:33 +0000356Installation
357------------
358
359- Issue #6047: fullinstall has been removed because Python 3's executable will
360 now be known as python3.
Benjamin Petersonaccdca52009-05-06 23:26:59 +0000361
Ronald Oussorenbe7149e2009-05-26 21:39:08 +0000362- Lib/smtpd.py is no longer installed as a script.
363
Martin v. Löwisdb1c3992009-05-23 10:38:26 +0000364Extension Modules
365-----------------
366
Martin v. Löwisa6a9c4d2009-05-30 06:15:30 +0000367- Issue #3061: Use wcsftime for time.strftime where available.
Martin v. Löwis1b01ccd2009-05-30 06:13:40 +0000368
Martin v. Löwise23c8682009-05-29 16:01:34 +0000369- Issue #4873: Fix resource leaks in error cases of pwd and grp.
370
Martin v. Löwisdb1c3992009-05-23 10:38:26 +0000371- Issue #6093: Fix off-by-one error in locale.strxfrm.
372
Benjamin Peterson744af442009-05-23 18:51:49 +0000373- The _functools and _locale modules are now built into the libpython shared
374 library instead of as extension modules.
Benjamin Peterson3dc22e82009-05-23 17:09:43 +0000375
Antoine Pitrou20327222009-05-24 20:39:11 +0000376Build
377-----
378
379- Issue #3585: Add pkg-config support. It creates a python-2.7.pc file
380 and a python3.pc symlink in the $(LIBDIR)/pkgconfig directory. Patch by
381 Clinton Roy.
382
Brett Cannon1262e7c2009-05-11 01:47:11 +0000383Tests
384-----
385
386- Issue 5442: Tests for importlib were not properly skipping case-sensitivity
387 tests on darwin even when the OS was installed on a case-sensitive
388 filesystem. Also fixed tests that should not be run when
389 sys.dont_write_bytecode is true.
390
391
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000392What's New in Python 3.1 beta 1?
393================================
394
Benjamin Peterson5c5f3de2009-05-06 20:43:28 +0000395*Release date: 2009-05-06*
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000396
397Core and Builtins
398-----------------
399
Mark Dickinson865e01a2009-05-07 16:37:01 +0000400- Issue #5914: Add new C API function PyOS_string_to_double, and
401 deprecate PyOS_ascii_strtod and PyOS_ascii_atof.
402
Eric Smith741191f2009-05-06 13:08:15 +0000403- Issue #3382: float.__format__, complex.__format__, and %-formatting
404 no longer map 'F' to 'f'. Because of issue #5859 (below), this only
405 affects nan -> NAN and inf -> INF.
406
Mark Hammond5a607a32009-05-06 08:04:54 +0000407- Issue #5799: ntpath (ie, os.path on Windows) fully supports UNC pathnames
408 in all operations, including splitdrive, split, etc. splitunc() now issues
409 a PendingDeprecation warning.
410
Eric Smith63376222009-05-05 14:04:18 +0000411- Issue #5920: For float.__format__, change the behavior with the
412 empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
413 to be like 'g' but with at least one decimal point and with a
414 default precision of 12. Previously, the behavior the same but with
415 a default precision of 6. This more closely matches str(), and
416 reduces surprises when adding alignment flags to the empty
417 presentation type. This also affects the new complex.__format__ in
418 the same way.
419
Martin v. Löwis011e8422009-05-05 04:43:17 +0000420- Implement PEP 383, Non-decodable Bytes in System Character Interfaces.
421
R. David Murrayb18500d2009-05-04 22:59:07 +0000422- Issue #5890: in subclasses of 'property' the __doc__ attribute was
423 shadowed by classtype's, even if it was None. property now
424 inserts the __doc__ into the subclass instance __dict__.
425
Antoine Pitrou244651a2009-05-04 18:56:13 +0000426- Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
427 sequences. Patch by Nick Barnes and Victor Stinner.
428
Martin v. Löwise0a2b722009-05-10 08:08:56 +0000429- Issue #3672: Reject surrogates in utf-8 codec; add surrogatepass error handler.
Martin v. Löwisdb12d452009-05-02 18:52:14 +0000430
Benjamin Petersond2e0c792009-05-01 20:40:59 +0000431- Issue #5883: In the io module, the BufferedIOBase and TextIOBase ABCs have
432 received a new method, detach(). detach() disconnects the underlying stream
433 from the buffer or text IO and returns it.
434
Mark Dickinson33841c32009-05-01 15:37:04 +0000435- Issue #5859: Remove switch from '%f' to '%g'-style formatting for
436 floats with absolute value over 1e50. Also remove length
437 restrictions for float formatting: '%.67f' % 12.34 and '%.120e' %
438 12.34 no longer raise an exception.
Mark Dickinsonf489caf2009-05-01 11:42:00 +0000439
Eric Smith741191f2009-05-06 13:08:15 +0000440- Issue #1588: Add complex.__format__. For example,
Eric Smith58a42242009-04-30 01:00:33 +0000441 format(complex(1, 2./3), '.5') now produces a sensible result.
442
Mark Dickinsond3ca5572009-04-29 18:47:07 +0000443- Issue #5864: Fix empty format code formatting for floats so that it
444 never gives more than the requested number of significant digits.
445
Eric Smith6dc46f52009-04-27 20:39:49 +0000446- Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
447 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
448
Eric Smithcc32a112009-04-26 21:35:14 +0000449- Issue #5835: Deprecate PyOS_ascii_formatd.
450
Martin v. Löwis71efeb72009-04-26 01:02:07 +0000451- Issue #4971: Fix titlecase for characters that are their own
452 titlecase, but not their own uppercase.
453
Benjamin Peterson193152c2009-04-25 01:08:45 +0000454- Issue #5283: Setting __class__ in __del__ caused a segfault.
455
Mark Dickinsonad476da2009-04-23 19:14:16 +0000456- Issue #5816: complex(repr(z)) now recovers z exactly, even when
457 z involves nans, infs or negative zeros.
458
Mark Dickinson4a16e3a2009-04-23 19:15:48 +0000459- Issue #3166: Make int -> float conversions correctly rounded.
Mark Dickinsonc6300392009-04-20 21:38:00 +0000460
Mark Dickinsone6a076d2009-04-18 11:48:33 +0000461- Issue #1869 (and many duplicates): make round(x, n) correctly
462 rounded for a float x, by using the decimal <-> binary conversions
463 from Python/dtoa.c. As a consequence, (e.g.) round(x, 2) now
464 consistently agrees with format(x, '.2f').
465
Benjamin Petersonae937c02009-04-18 20:54:08 +0000466- Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
467 some builtin types.
468
Eric Smith0923d1d2009-04-16 20:16:10 +0000469- Issue #5772: format(1e100, '<') produces '1e+100', not '1.0e+100'.
470
Eric Smith35e84722009-04-16 20:21:28 +0000471- Issue #5515: str.format() type 'n' combined with commas and leading
472 zeros no longer gives odd results with ints and floats.
Eric Smith0923d1d2009-04-16 20:16:10 +0000473
474- Implement PEP 378, Format Specifier for Thousands Separator, for
475 floats.
476
Mark Dickinson3370cce2009-04-17 22:40:53 +0000477- The str function switches to exponential notation at
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000478 1e11, not 1e12. This avoids printing 13 significant digits in
479 situations where only 12 of them are correct. Example problem
480 value: str(1e11 + 0.5). (This minor issue has existed in 2.x for a
481 long time.)
482
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000483- Issue #1580: On most platforms, use a 'short' float repr: for a
484 finite float x, repr(x) now outputs a string based on the shortest
485 sequence of decimal digits that rounds to x. Previous behaviour was
486 to output 17 significant digits and then strip trailing zeros.
Mark Dickinson3370cce2009-04-17 22:40:53 +0000487 Another minor difference is that the new repr switches to
488 exponential notation at 1e16 instead of the previous 1e17; this
489 avoids misleading output in some cases.
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000490
491 There's a new sys attribute sys.float_repr_style, which takes
492 the value 'short' to indicate that we're using short float repr,
493 and 'legacy' if the short float repr isn't available for one
494 reason or another.
495
496 The float repr change involves incorporating David Gay's 'perfect
497 rounding' code into the Python core (it's in Python/dtoa.c). As a
498 secondary consequence, all string-to-float and float-to-string
499 conversions (including all float formatting operations) will be
500 correctly rounded on these platforms.
501
502 See issue 1580 discussions for details of platforms for which
503 this change does not apply.
504
Benjamin Peterson2808d3c2009-04-15 21:34:27 +0000505- Issue #5759: float() didn't call __float__ on str subclasses.
506
Georg Brandlabc38772009-04-12 15:51:51 +0000507- The string.maketrans() function is deprecated; there is a new static method
508 maketrans() on the bytes and bytearray classes. This removes confusion about
509 the types string.maketrans() is supposed to work with, and mirrors the
510 methods available on the str class.
511
R. David Murraydc6da8a2009-04-09 22:16:43 +0000512- Issue #2170: refactored xml.dom.minidom.normalize, increasing both
513 its clarity and its speed.
514
Matthias Klose091c7b12009-04-07 13:24:27 +0000515- Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
516 to avoid compiler warnings.
517
Walter Dörwald8dc33d52009-05-06 14:41:26 +0000518- Issue #3739: The unicode-internal encoder now reports the number of characters
519 consumed like any other encoder (instead of the number of bytes).
520
Benjamin Peterson0b4915e2009-04-25 21:11:45 +0000521Installation
522------------
523
524- Issue #5756: Install idle and pydoc with a 3 suffix.
525
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000526Library
527-------
528
Martin v. Löwis403117a2009-05-24 19:19:17 +0000529- Issue #5311: bdist_msi can now build packages that do not depend on a
530 specific Python version.
531
Raymond Hettingereb816952009-05-29 01:22:18 +0000532- Issue #5150: IDLE's format menu now has an option to strip trailing
533 whitespace.
534
Vinay Sajipaffbd872009-06-11 10:11:47 +0000535- Issue #5940: distutils.command.build_clib.check_library_list was not doing
Tarek Ziadédd9f65f2009-05-06 07:26:24 +0000536 the right type checkings anymore.
537
Thomas Heller00cfc372009-05-05 19:04:40 +0000538- Issue #4875: On win32, ctypes.util.find_library does no longer
539 return directories.
540
Georg Brandl243ad662009-05-05 09:00:19 +0000541- Issue #5142: Add the ability to skip modules while stepping to pdb.
542
Georg Brandl991f9202009-05-05 08:31:54 +0000543- Issue #1309567: Fix linecache behavior of stripping subdirectories when
544 looking for files given by a relative filename.
545
Georg Brandleaa84ef2009-05-05 08:14:33 +0000546- Issue #5923: Update the ``turtle`` module to version 1.1, add two new
547 turtle demos in Demo/turtle.
548
Antoine Pitrou3c33e082009-05-04 21:21:36 +0000549- Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
550 extracting a file to the root directory.
551
Hirokazu Yamamotobbb9be72009-05-04 05:56:46 +0000552- Issue #5913: os.listdir() should fail for empty path on windows.
553
Antoine Pitroua9f48a02009-05-02 21:41:14 +0000554- Issue #5084: unpickling now interns the attribute names of pickled objects,
555 saving memory and avoiding growth in size of subsequent pickles. Proposal
556 and original patch by Jake McGuire.
557
Benjamin Petersonc6b607d2009-05-02 12:36:44 +0000558- The json module now works exclusively with str and not bytes.
559
Gregory P. Smithe54dff52009-05-01 22:13:48 +0000560- Issue #3959: The ipaddr module has been added to the standard library.
561 Contributed by Google.
562
Antoine Pitrou7fff0962009-05-01 21:09:44 +0000563- Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
564 error when a named pipe is encountered, rather than blocking infinitely.
565
Raymond Hettinger1f0db402009-04-29 00:38:08 +0000566- Issue #5857: tokenize.tokenize() now returns named tuples.
567
Thomas Hellerc1edc2d2009-04-28 19:55:58 +0000568- Issue #4305: ctypes should now build again on mipsel-linux-gnu
569
Antoine Pitrou7a0fedf2009-04-27 22:31:40 +0000570- Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
571 string is already in normalized form, by performing a quick check beforehand.
572 Original patch by Rauli Ruohonen.
573
Antoine Pitrou57f3d932009-04-27 21:04:19 +0000574- Issue #5853: calling a function of the mimetypes module from several threads
575 at once could hit the recursion limit if the mimetypes database hadn't been
576 initialized before.
577
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000578- Issue #5854: Updated __all__ to include some missing names and remove some
579 names which should not be exported.
580
Thomas Heller34596a92009-04-24 20:50:00 +0000581- Issue #3102: All global symbols that the _ctypes extension defines
582 are now prefixed with 'Py' or '_ctypes'.
583
584- Issue #5041: ctypes does now allow pickling wide character.
585
Mark Dickinsond4d95f82009-04-24 14:06:19 +0000586- Issue #5812: For the two-argument form of the Fraction constructor,
587 Fraction(m, n), m and n are permitted to be arbitrary Rational
588 instances.
589
Mark Dickinsoncf63f2f2009-04-22 17:50:21 +0000590- Issue #5812: Fraction('1e6') is valid: more generally, any string
591 that's valid for float() is now valid for Fraction(), with the
592 exception of strings representing NaNs and infinities.
593
Antoine Pitroucf4c7492009-04-19 00:09:36 +0000594- Issue #5734: BufferedRWPair was poorly tested and had several glaring
595 bugs. Patch by Brian Quinlan.
596
R. David Murray9e94ddf2009-04-13 17:06:33 +0000597- Issue #1161031: fix readwrite select flag handling: POLLPRI now
598 results in a handle_expt_event call, not handle_read_event, and POLLERR
599 and POLLNVAL now call handle_close, not handle_expt_event. Also,
600 dispatcher now has an 'ignore_log_types' attribute for suppressing
601 log messages, which is set to 'warning' by default.
602
Matthias Klosea3d29e82009-04-07 13:13:10 +0000603- Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
604 new arguments introduced in 2.5.
605
Walter Dörwald1b08b302009-04-25 14:13:56 +0000606- Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
607 makeunicodedata.py and regenerated the Unicode database (This fixes
608 u'\u1d79'.lower() == '\x00').
609
Matthias Klose535336f2009-04-07 13:49:45 +0000610Extension Modules
611-----------------
612
Benjamin Petersone04b6272009-05-04 22:25:21 +0000613- Issue #5881: Remove old undocumented compatibility interfaces in hashlib and
614 pwd.
615
Mark Dickinsonea835e72009-04-19 20:40:33 +0000616- Issue #5463: In struct module, remove deprecated float coercion
617 for integer type codes: struct.pack('L', 0.3) should now raise
618 an error. The _PY_STRUCT_FLOAT_COERCE constant has been removed.
619 The version number has been bumped to 0.3.
620
Matthias Klose535336f2009-04-07 13:49:45 +0000621- Issue #5359: Readd the Berkley-DB detection code to allow _dbm be built
622 using Berkley-DB.
623
Nick Coghlan47384702009-04-22 16:13:36 +0000624Tests
625-----
626
627- Issue #5354: New test support function import_fresh_module() makes
628 it easy to import both normal and optimised versions of modules.
629 test_heapq and test_warnings have been adjusted to use it, tests for
630 other modules with both C and Python implementations in the stdlib
631 can be adjusted to use it over time.
632
Walter Dörwald4ba80132009-04-25 12:48:43 +0000633- Issue #5837: Certain sequences of calls to set() and unset() for
634 support.EnvironmentVarGuard objects restored the environment variables
635 incorrectly on __exit__.
636
Benjamin Petersonb173f782009-05-05 22:31:58 +0000637C-API
638-----
639
640- Issue #5630: A replacement PyCObject API, PyCapsule, has been added.
641
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000642
Benjamin Petersond1735892009-03-07 18:46:21 +0000643What's New in Python 3.1 alpha 2?
644=================================
645
Benjamin Peterson88f14352009-04-04 21:06:52 +0000646*Release date: 2009-4-4*
Benjamin Petersond1735892009-03-07 18:46:21 +0000647
648Core and Builtins
649-----------------
Benjamin Petersone099b372009-04-04 17:09:35 +0000650
Eric Smith1e1d7d22009-04-03 22:25:33 +0000651- Implement PEP 378, Format Specifier for Thousands Separator, for
652 integers.
Benjamin Petersond1735892009-03-07 18:46:21 +0000653
Benjamin Peterson8f76b492009-04-03 22:22:42 +0000654- Issue #5666: Py_BuildValue's 'c' code should create byte strings.
655
Benjamin Peterson7fe98532009-04-02 00:33:55 +0000656- Issue #5499: The 'c' code for argument parsing functions now only accepts a
657 byte, and the 'C' code only accepts a unicode character.
658
Georg Brandl406b3d82009-04-11 21:24:37 +0000659- Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
660 when hitting the recursion limit under certain circumstances.
661
Brett Cannon0759dd62009-04-01 18:13:07 +0000662- Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
663
Georg Brandlab6f2f62009-03-31 04:16:10 +0000664- Fix a segfault when running test_exceptions with coverage, caused by
665 insufficient checks in accessors of Exception.__context__.
666
Guido van Rossum0ad59d42009-03-30 22:01:35 +0000667- Issue #5604: non-ASCII characters in module name passed to
668 imp.find_module() were converted to UTF-8 while the path is
669 converted to the default filesystem encoding, causing nonsense.
670
Benjamin Peterson09832742009-03-26 17:15:46 +0000671- Issue #5126: str.isprintable() returned False for space characters.
672
Ronald Oussorenfa1fcd12009-03-30 23:16:10 +0000673- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
674 the end sys.path, for compatibility with the system install of Python.
675
Antoine Pitrou3a652b12009-03-23 18:52:06 +0000676- Issue #4688: Add a heuristic so that tuples and dicts containing only
677 untrackable objects are not tracked by the garbage collector. This can
678 reduce the size of collections and therefore the garbage collection overhead
679 on long-running programs, depending on their particular use of datatypes.
680
Mark Dickinson17e4fdd2009-03-23 18:44:57 +0000681- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
682 improve its performance. Long divisions and remainder operations
683 are now between 50% and 150% faster.
684
Mark Dickinsonbd792642009-03-18 20:06:12 +0000685- Issue #4258: Make it possible to use base 2**30 instead of base
686 2**15 for the internal representation of integers, for performance
687 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
688 --enable-big-digits option to configure, which overrides the
689 default. Add sys.int_info structseq to provide information about
690 the internal format.
691
Mark Dickinson081dfee2009-03-18 14:47:41 +0000692- Issue #4474: PyUnicode_FromWideChar now converts characters outside
693 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
694 and sizeof(Py_UNICODE) == 2.
695
Eric Smith8ec90442009-03-14 12:29:34 +0000696- Issue #5237: Allow auto-numbered fields in str.format(). For
697 example: '{} {}'.format(1, 2) == '1 2'.
698
Antoine Pitrou652e7072009-03-13 19:25:20 +0000699- Issue #5392: when a very low recursion limit was set, the interpreter would
700 abort with a fatal error after the recursion limit was hit twice.
701
Matthias Klose042f1332009-04-04 14:32:42 +0000702- Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
703 short file names.
704
Benjamin Petersond1735892009-03-07 18:46:21 +0000705Library
706-------
707
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000708- Issue #2625: added missing items() call to the for loop in
R. David Murray548ac412009-04-02 19:44:43 +0000709 mailbox.MH.get_message().
710
Hye-Shik Chang944820b2009-04-02 10:33:16 +0000711- Issue #5640: Fix _multibytecodec so that CJK codecs don't repeat
712 error substitutions from non-strict codec error callbacks in
713 incrementalencoder and StreamWriter.
714
Georg Brandl33c28812009-04-01 23:07:29 +0000715- Issue #5656: Fix the coverage reporting when running the test suite with
716 the -T argument.
717
Raymond Hettinger3f10a952009-04-01 19:05:50 +0000718- Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
719
Georg Brandl4ed72ac2009-04-01 04:28:33 +0000720- Issue #5624: Fix the _winreg module name still used in several modules.
721
Benjamin Petersona1b49012009-03-31 23:11:32 +0000722- Issue #5628: Fix io.TextIOWrapper.read() with a unreadable buffer.
723
Jesse Nollera9314042009-03-31 22:36:44 +0000724- Issue #5619: Multiprocessing children disobey the debug flag and causes
725 popups on windows buildbots. Patch applied to work around this issue.
726
Jesse Noller32d68c22009-03-31 18:48:42 +0000727- Issue #5400: Added patch for multiprocessing on netbsd compilation/support
728
Hirokazu Yamamoto16caab02009-03-31 13:44:06 +0000729- Issue #5387: Fixed mmap.move crash by integer overflow.
730
Jesse Nollerf8d00852009-03-31 03:25:07 +0000731- Issue #5261: Patch multiprocessing's semaphore.c to support context
732 manager use: "with multiprocessing.Lock()" works now.
733
Brett Cannon7f6b4f82009-03-30 21:30:26 +0000734- Issue #5236: Change time.strptime() to only take strings. Didn't work with
735 bytes already but the failure was non-obvious.
736
Jesse Noller7af4ef82009-03-30 16:47:15 +0000737- Issue #5177: Multiprocessing's SocketListener class now uses
738 socket.SO_REUSEADDR on all connections so that the user no longer needs
739 to wait 120 seconds for the socket to expire.
740
Benjamin Peterson48e24782009-03-29 13:02:52 +0000741- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
742
Antoine Pitrou66994e12009-03-29 00:45:26 +0000743- Issue #1174606: Calling read() without arguments of an unbounded file
744 (typically /dev/zero under Unix) could crash the interpreter.
745
Benjamin Peterson59406a92009-03-26 17:10:29 +0000746- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
747 io.BufferedRandom have been deprecated for removal in Python 3.2.
748
Lars Gustäbel42e00912009-03-22 20:34:29 +0000749- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
750 forever on incomplete input. That caused tarfile.open() to hang when used
751 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
752 partial bzip2 compressed data.
753
Mark Dickinson79f52032009-03-17 23:12:51 +0000754- Issue #2110: Add support for thousands separator and 'n' type
755 specifier to Decimal.__format__
756
Mark Dickinson9c59fe02009-03-17 18:15:08 +0000757- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
758 '>' alignment characters.
759
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +0000760- The error detection code in FileIO.close() could fail to reflect the `errno`
761 value, and report it as -1 instead.
762
Antoine Pitroua28fcfd2009-03-13 23:42:55 +0000763- Issue #5016: FileIO.seekable() could return False if the file position
764 was negative when truncated to a C int. Patch by Victor Stinner.
765
Mark Dickinsonae681df2009-03-21 10:26:31 +0000766Extension Modules
767-----------------
768
Benjamin Petersone099b372009-04-04 17:09:35 +0000769- Issue #5391: mmap now deals exclusively with bytes.
770
Mark Dickinsonae681df2009-03-21 10:26:31 +0000771- Issue #5463: In struct module, remove deprecated overflow wrapping
772 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +0000773 struct.error instead of returning b'\xff\xff\xff\xff'. The
774 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
775 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +0000776
Benjamin Petersond1735892009-03-07 18:46:21 +0000777
Benjamin Petersona58a6262009-03-07 16:34:40 +0000778What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +0000779================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000780
Benjamin Petersona58a6262009-03-07 16:34:40 +0000781*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000782
783Core and Builtins
784-----------------
785
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +0000786- The io module has been reimplemented in C for speed.
787
Raymond Hettingerb0d56af2009-03-03 10:52:49 +0000788- Give dict views an informative __repr__.
789
Eric Smith5e5c0db2009-02-20 14:25:03 +0000790- Issue #5247: Improve error message when unknown format codes are
791 used when using str.format() with str, int, and float arguments.
792
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000793- Issue #5249: time.strftime returned malformed string when format string
794 contained non ascii character on windows.
795
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000796- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
797 source has already been decoded into str.
798
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000799- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
800 rotating the object pointer by 4 bits to the right.
801
Mark Dickinson87ec0852009-02-09 17:15:59 +0000802- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
803 it now forces its argument to double before testing for infinity.
804
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000805- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
806 returns a non-number type.
807
Benjamin Peterson87618552009-02-08 15:00:52 +0000808- Issue #5182: Removed memoryview.__str__.
809
Mark Dickinsonc008a172009-02-01 13:59:22 +0000810- Issue #1717: Removed builtin cmp() function, dropped tp_compare
811 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000812 the type definition cmpfunc. The tp_compare slot has been renamed
813 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000814
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000815- Issue #1242657: the __len__() and __length_hint__() calls in several tools
Raymond Hettingere8364232009-02-02 22:55:09 +0000816 were suppressing all exceptions. These include list() and bytearray().
817
Mark Dickinson1124e712009-01-28 21:25:58 +0000818- Issue #4707: round(x, n) now returns an integer if x is an integer.
819 Previously it returned a float.
820
Antoine Pitroub52ec782009-01-25 16:34:23 +0000821- Issue #4753: By enabling a configure option named '--with-computed-gotos'
822 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
823 evaluation loop is compiled with a new dispatch mechanism which gives
824 speedups of up to 20%, depending on the system, on various benchmarks.
825
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000826- Issue #4874: Most builtin decoders now reject unicode input.
827
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000828- Issue #4842: Don't allow trailing 'L' when constructing an integer
829 from a string.
830
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000831- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
832
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000833- Issue #4838: When a module is deallocated, free the memory backing the
834 optional module state data.
835
Mark Dickinson8055afd2009-01-17 10:04:45 +0000836- Issue #4910: Rename nb_long slot to nb_reserved, and change its
837 type to (void *).
838
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000839- Issue #4935: The overflow checking code in the expandtabs() method common
840 to str, bytes and bytearray could be optimized away by the compiler, letting
841 the interpreter segfault instead of raising an error.
842
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000843- Issue #3720: Fix a crash when an iterator modifies its class and removes its
844 __next__ method.
845
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000846- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
847 function no longer attempt to call the __long__ slot to convert an object
848 to an integer. Only the __int__ and __trunc__ slots are examined.
849
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000850- Issue #4893: Use NT threading on CE.
851
Martin v. Löwisec59d042009-01-12 07:59:10 +0000852- Issue #4915: Port sysmodule to Windows CE.
853
Antoine Pitrouab868312009-01-10 15:40:25 +0000854- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
855 common cases are optimized thanks to a dedicated fast path and a moderate
856 amount of loop unrolling.
857
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000858- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
859 collecting the oldest generation) so that allocating lots of objects without
860 destroying them does not show quadratic performance. Based on a proposal by
861 Martin von Löwis at
862 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
863
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000864- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000865 having been closed (for instance, a read() call could return some
866 previously buffered data). Patch by Dmitry Vasiliev.
867
Antoine Pitrou05608432009-01-09 18:53:14 +0000868- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
869 flag to work properly. Furthermore, when specifying -u, the text stdout
870 and stderr streams have line-by-line buffering enabled (the default being
871 to buffer arbitrary chunks of data).
872
Raymond Hettinger35631532009-01-09 03:58:09 +0000873- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
874 instead of ints (reducing its size from 4 to 8 times thereby reducing
875 Python's overall memory).
876
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000877- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
878 an existing .py counterpart, override the co_filename attributes of all
879 code objects if the original filename is obsolete (which can happen if the
880 file has been renamed, moved, or if it is accessed through different paths).
881 Patch by Ziga Seilnacht and Jean-Paul Calderone.
882
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000883- Issue #4580: Fix slicing of memoryviews when the item size is greater than
884 one byte. Also fixes the meaning of len() so that it returns the number of
885 items, rather than the size in bytes.
886
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000887- Issue #4075: Use OutputDebugStringW in Py_FatalError.
888
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000889- Issue #4747: When the terminal does not use utf-8, executing a script with
890 non-ascii characters in its name could fail with a "SyntaxError: None" error.
891
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000892- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000893 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000894
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000895- Issue #3680: Reference cycles created through a dict, set or deque iterator
896 did not get collected.
897
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000898- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
899 where the tp_hash and tp_dict slots are both NULL.
900
Georg Brandlccc47b62008-12-28 11:44:14 +0000901- Issue #4759: None is now allowed as the first argument of
902 bytearray.translate(). It was always allowed for bytes.translate().
903
Skip Montanaro80072cb2008-12-23 03:51:14 +0000904- Added test case to ensure attempts to read from a file opened for writing
905 fail.
906
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000907- Issue #3106: Speedup some comparisons (str/str and int/int).
908
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000909- Issue #2183: Simplify and optimize bytecode for list, dict and set
910 comprehensions. Original patch for list comprehensions by Neal Norwitz.
911
Antoine Pitrou621601a2008-12-17 23:18:19 +0000912- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
913 print elapsed times, not only when some objects are uncollectable /
914 unreachable. Original patch by Neil Schemenauer.
915
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000916- Issue #3439: Add a bit_length method to int.
917
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000918- Issue #2173: When getting device encoding, check that return value of
919 nl_langinfo is not the empty string. This was causing silent build
920 failures on OS X.
921
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000922- Issue #4597: Fixed several opcodes that weren't always propagating
923 exceptions.
924
925- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000926 context manager returns a value that cannot be converted to a bool.
927
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000928- Issue #4445: Replace "sizeof(PyBytesObject)" with
929 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
930 bytes instances. On a typical machine this saves 3 bytes of memory
931 (on average) per allocation of a bytes instance.
932
Christian Heimesa872de52008-12-05 08:26:55 +0000933- Issue #4533: File read operation was dreadfully slow due to a slowly
934 growing read buffer. Fixed by using the same growth rate algorithm as
935 Python 2.x.
936
Antoine Pitrou5504e892008-12-06 21:27:53 +0000937- Issue #4509: Various issues surrounding resize of bytearray objects to
938 which there are buffer exports (e.g. memoryview instances).
939
Georg Brandlf9734072008-12-07 15:30:06 +0000940- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
941 method on file objects with closefd=False. The file descriptor is still
942 kept open but the file object behaves like a closed file. The ``FileIO``
943 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000944
Antoine Pitroubc420402008-12-07 20:14:49 +0000945- Issue #4569: Interpreter crash when mutating a memoryview with an item size
946 larger than 1.
947
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000948- Issue #4748: Lambda generators no longer return a value.
949
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000950- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
951
Walter Dörwaldc1651a02009-05-03 22:55:55 +0000952- Issue #5108: Handle %s like %S, %R and %A in PyUnicode_FromFormatV(): Call
953 PyUnicode_DecodeUTF8() once, remember the result and output it in a second
954 step. This avoids problems with counting UTF-8 bytes that ignores the effect
955 of using the replace error handler in PyUnicode_DecodeUTF8().
956
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000957Library
958-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000959
Tarek Ziadé3cc12f62009-07-22 09:03:01 +0000960- Issue #6545: Removed assert statements in distutils.Extension, so the
961 behavior is similar when used with -O.
962
Tarek Ziadé24448fa2009-07-11 11:01:14 +0000963- Issue #6459: distutils.command.build_ext.get_export_symbols now uses the
964 "PyInit" prefix, rather than "init".
965
Georg Brandld80344f2009-08-13 12:26:19 +0000966- Issue #6433: fixed issues with multiprocessing.pool.map hanging on empty list
967
Tarek Ziadé7e646002009-07-10 09:16:07 +0000968- Issue #6455: Fixed test_build_ext under win32.
969
Tarek Ziadé35c88a82009-07-04 02:05:51 +0000970- Issue #6413: Fixed the log level in distutils.dist for announce.
971
Tarek Ziadé385029f2009-07-03 08:37:27 +0000972- Issue #6403: Fixed package path usage in build_ext.
973
Tarek Ziadé2c3de402009-06-29 16:46:14 +0000974- Issue #6365: Distutils build_ext inplace mode was copying the compiled
975 extension in a subdirectory if the extension name had dots.
976
Tarek Ziadé5e06a652009-06-16 07:43:42 +0000977- Issue #6287: Added the license field in Distutils documentation.
978
Tarek Ziadéff543362009-06-11 09:25:41 +0000979- Issue #6263: Fixed syntax error in distutils.cygwincompiler.
980
Tarek Ziadéabcc3f42009-06-11 08:31:17 +0000981- Issue #5201: distutils.sysconfig.parse_makefile() now understands `$$`
982 in Makefiles. This prevents compile errors when using syntax like:
983 `LDFLAGS='-rpath=\$$LIB:/some/other/path'`. Patch by Floris Bruynooghe.
984
Hirokazu Yamamoto2703fd92009-05-29 09:14:04 +0000985- Issue #6131: test_modulefinder leaked when run after test_distutils.
986 Patch by Hirokazu Yamamoto.
987
Tarek Ziadé77c8b372009-05-28 13:01:13 +0000988- Issue #6048: Now Distutils uses the tarfile module in archive_util.
989
Vinay Sajipaffbd872009-06-11 10:11:47 +0000990- Issue #6062: In distutils, fixed the package option of build_ext. Feedback
Tarek Ziadé822eb842009-05-19 16:22:57 +0000991 and tests on pywin32 by Tim Golden.
992
Tarek Ziadé93fb3aa2009-05-18 12:29:06 +0000993- Issue #6053: Fixed distutils tests on win32. patch by Hirokazu Yamamoto.
994
Tarek Ziadéd18a84e2009-05-18 08:07:46 +0000995- Issue #6046: Fixed the library extension when distutils build_ext is used
996 inplace. Initial patch by Roumen Petrov.
997
Vinay Sajipaffbd872009-06-11 10:11:47 +0000998- Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
Tarek Ziadé5af55c62009-05-16 16:52:13 +0000999 subcommand.
1000
Tarek Ziadé4210c6e2009-05-14 20:20:47 +00001001- Issue #6022: a test file was created in the current working directory by
1002 test_get_outputs in Distutils.
1003
Tarek Ziadéff0e5002009-05-12 17:14:01 +00001004- Issue #5977: distutils build_ext.get_outputs was not taking into account the
1005 inplace option. Initial patch by kxroberto.
1006
Tarek Ziadé06fbee12009-05-10 10:34:01 +00001007- Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
1008 for old-style extensions.
1009
Tarek Ziadébe5b1b92009-05-09 10:09:11 +00001010- Issue #5976: Fixed Distutils test_check_environ.
1011
Tarek Ziadé5662d3e2009-05-07 21:24:43 +00001012- Issue #5941: Distutils build_clib command was not working anymore because
1013 of an incomplete costumization of the archiver command. Added ARFLAGS in the
1014 Makefile besides AR and make Distutils use it. Original patch by David
1015 Cournapeau.
1016
R. David Murrayb507d2e2009-04-29 15:34:32 +00001017- Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
1018
Vinay Sajipaffbd872009-06-11 10:11:47 +00001019- Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
Tarek Ziadé81623822009-04-29 08:07:44 +00001020 anymore.
1021
Vinay Sajipad5fa2f2009-04-27 13:55:05 +00001022- Issue #5810: Fixed Distutils test_build_scripts so it uses
Tarek Ziadé939f9c82009-04-25 12:53:56 +00001023 sysconfig.get_config_vars.
1024
Tarek Ziadé23336082009-04-25 12:39:56 +00001025- Issue #4951: Fixed failure in test_httpservers.
1026
Thomas Hellerd3cfe992009-04-24 20:10:24 +00001027- Issue #5795: Fixed test_distutils failure on Debian ppc.
1028
Tarek Ziadé822e1d42009-04-13 12:37:57 +00001029- Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
1030
Georg Brandl1f9fa312009-04-27 16:42:58 +00001031- Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
1032 a value in SafeConfigParser.
1033
Tarek Ziadéf396ecf2009-04-11 15:00:43 +00001034- Issue #5732: added a new command in Distutils: check.
1035
Vinay Sajipad5fa2f2009-04-27 13:55:05 +00001036- Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
Tarek Ziadéa6191802009-04-09 22:02:39 +00001037 platforms. Initial patch by Paul Moore.
1038
Tarek Ziadéf6370502009-04-05 22:57:21 +00001039- Issue #5095: Added bdist_msi to the list of bdist supported formats.
1040 Initial fix by Steven Bethard.
1041
Tarek Ziadé889b0aa2009-04-05 21:49:36 +00001042- Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
1043 Initial fix by Wayne Davison.
1044
Georg Brandl1cdd83c2009-04-05 20:24:29 +00001045- Issue #5694: removed spurious test output in Distutils (test_clean).
Tarek Ziadéea261632009-04-05 18:33:34 +00001046
Georg Brandl1cdd83c2009-04-05 20:24:29 +00001047- Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
Georg Brandl236f7972009-04-05 14:28:42 +00001048
Brett Cannonf47e84c2009-04-01 16:06:01 +00001049- Issue #1665206 (partially): Move imports in cgitb to the top of the module
1050 instead of performing them in functions. Helps prevent import deadlocking in
1051 threads.
1052
R. David Murraye59482e2009-04-01 03:42:00 +00001053- Issue #2522: locale.format now checks its first argument to ensure it has
1054 been passed only one pattern, avoiding mysterious errors where it appeared
1055 that it was failing to do localization.
1056
Tarek Ziadéb2e36f12009-03-31 22:37:55 +00001057- Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
1058 Brandl.
1059
Antoine Pitrou350370c2009-03-14 00:13:13 +00001060- Issue #1222: locale.format() bug when the thousands separator is a space
1061 character.
1062
Tarek Ziadé516db942009-03-11 12:52:00 +00001063- Issue #5472: Fixed distutils.test_util tear down. Original patch by
1064 Tim Golden.
1065
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +00001066- collections.deque() objects now have a read-only attribute called maxlen.
1067
Guilherme Polof45b4cc2009-03-07 02:19:14 +00001068- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
1069 it is has been populated and properly configured in order to prevent
1070 window flashing.
1071
Guilherme Polo56f5be52009-03-07 01:54:57 +00001072- Issue #4792: Prevent a segfault in _tkinter by using the
1073 guaranteed to be safe interp argument given to the PythonCmd in place of
1074 the Tcl interpreter taken from a PythonCmd_ClientData.
1075
1076- Issue #5193: Guarantee that tkinter.Text.search returns a string.
1077
Tarek Ziadé63b64c02009-03-07 00:51:53 +00001078- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
1079 Original patch by Akira Kitada.
1080
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +00001081- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
1082
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +00001083- Issue #5385: Fixed mmap crash after resize failure on windows.
1084
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +00001085- Issue #5179: Fixed subprocess handle leak on failure on windows.
1086
Raymond Hettinger2d32f632009-03-02 21:24:57 +00001087- PEP 372: Added collections.OrderedDict().
1088
Raymond Hettingera4f52b12009-03-02 22:28:31 +00001089- The _asdict() for method for namedtuples now returns an OrderedDict().
1090
Raymond Hettinger0663a1e2009-03-02 23:06:00 +00001091- configparser now defaults to using an ordered dictionary.
1092
Benjamin Petersone0124bd2009-03-09 21:04:33 +00001093- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
1094 import guess_extension`` was used.
1095
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +00001096- Issue #1733986: Fixed mmap crash in accessing elements of second map object
1097 with same tagname but larger size than first map. (Windows)
1098
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +00001099- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
1100 overrun.
1101
Tarek Ziadéf0721222009-02-28 10:16:43 +00001102- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
1103 bdist_rpm command.
1104
1105- Issue #5378: added --quiet option to Distutils bdist_rpm command.
1106
Tarek Ziadé38e3d512009-02-27 12:58:56 +00001107- Issue #5052: make Distutils compatible with 2.3 again.
1108
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +00001109- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
1110 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +00001111
Vinay Sajipb672b6d2009-02-19 12:36:11 +00001112- Issue #5287: Add exception handling around findCaller() call to help out
1113 IronPython.
1114
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +00001115- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
1116 The file was resized to wrong size.
1117
1118- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
1119
Vinay Sajipb672b6d2009-02-19 12:36:11 +00001120- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +00001121 from the package_data and the data_files metadata.
1122
Vinay Sajipb672b6d2009-02-19 12:36:11 +00001123- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +00001124 support.TempdirManager, to avoid writing in the tests directory.
1125
Tarek Ziadé68c50952009-02-13 23:04:17 +00001126- Issue #4524: distutils build_script command failed with --with-suffix=3.
1127 Initial patch by Amaury Forgeot d'Arc.
1128
Tarek Ziadé811d6242009-02-13 22:26:15 +00001129- Issue #2461: added tests for distutils.util
1130
Mark Dickinsonc28ad272009-02-12 17:58:36 +00001131- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
1132 which inherited from numbers.py which did not have __slots__ defined. The
1133 numbers hierarchy now has its own __slots__ declarations.
1134
Antoine Pitroub353c122009-02-11 00:39:14 +00001135- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
1136 encoding.
1137
Thomas Heller465c8022009-02-10 18:59:04 +00001138- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
1139 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
1140
Tarek Ziadé7d5e9872009-02-10 12:36:33 +00001141- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
1142 under NT and OS2. Patch by Philip Jenvey.
1143
Brett Cannonbefb14f2009-02-10 02:10:16 +00001144- Issue #5128: Make compileall properly inspect bytecode to determine if needs
1145 to be recreated. This avoids a timing hole thanks to the old reliance on the
1146 ctime of the files involved.
1147
Guilherme Polob681df42009-02-09 22:33:59 +00001148- Issue #5122: Synchronize tk load failure check to prevent a potential
1149 deadlock.
1150
Benjamin Petersona86f2c02009-02-10 02:41:10 +00001151- Issue #1818: collections.namedtuple() now supports a keyword argument
1152 'rename' which lets invalid fieldnames be automatically converted to
1153 positional names in the form, _1, _2, ...
1154
Guilherme Poloae098992009-02-09 16:44:24 +00001155- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
1156
Nick Coghlan9a1d6e32009-02-08 03:37:27 +00001157- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
1158 public documented method ``ZipImporter.get_filename()``.
1159
Nick Coghlan3f48ae32009-02-08 01:58:26 +00001160- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
1161 the execution of packages by looking for and executing a ``__main__``
1162 submodule when a package name is supplied. Initial patch by Andi
1163 Vajda.
1164
Guilherme Polo491aee22009-02-06 23:16:11 +00001165- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
1166 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
1167 Tkapp_Call when calling from a thread different than the one that created
1168 the Tcl interpreter. Patch by Robert Hancock.
1169
Eric Smith0e5b5622009-02-06 01:32:42 +00001170- Issue #4285: Change sys.version_info to be a named tuple. Patch by
1171 Ross Light.
1172
Vinay Sajipb672b6d2009-02-19 12:36:11 +00001173- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +00001174 environment/Makefile. Patch by Douglas Greiman.
1175
Tarek Ziadé70a74eb2009-02-06 00:38:35 +00001176- Issue #1276768: The verbose option was not used in the code of
1177 distutils.file_util and distutils.dir_util.
1178
Vinay Sajipb672b6d2009-02-19 12:36:11 +00001179- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +00001180 --enabled-shared activated. Initial patch by Dave Peterson.
1181
Guilherme Polo7f423952009-02-02 21:17:09 +00001182- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
1183
Raymond Hettinger85602262009-02-03 04:19:10 +00001184- The shelve module now defaults to pickle protocol 3.
1185
Brett Cannone61426e2009-01-30 01:31:34 +00001186- Fix a bug in the trace module where a bytes object from co_lnotab had its
1187 items being passed through ord().
1188
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +00001189- Issue #2047: shutil.move() could believe that its destination path was
1190 inside its source path if it began with the same letters (e.g. "src" vs.
1191 "src.new").
1192
Guilherme Polo5f238482009-01-28 14:41:10 +00001193- Added the ttk module. See issue #2983: Ttk support for Tkinter.
1194
Raymond Hettinger89e12962009-01-26 02:09:03 +00001195- Removed isSequenceType(), isMappingType, and isNumberType() from the
1196 operator module; use the abstract base classes instead. Also removed
1197 the repeat() function; use mul() instead.
1198
Georg Brandl1cdd83c2009-04-05 20:24:29 +00001199- Issue #5021: doctest.testfile() did not create __name__ and
Raymond Hettinger0f055172009-01-27 10:06:09 +00001200 collections.namedtuple() relied on __name__ being defined.
1201
1202- Backport importlib from Python 3.1. Only the import_module() function has
1203 been backported to help facilitate transitions from 2.7 to 3.1.
1204
Tarek Ziadé0302cf52009-01-26 17:23:20 +00001205- Issue #1885: distutils. When running sdist with --formats=tar,gztar
1206 the tar file was overriden by the gztar one.
1207
Tarek Ziadé4d4456f2009-01-25 18:27:45 +00001208- Issue #4863: distutils.mwerkscompiler has been removed.
1209
Raymond Hettingerd07d9392009-01-27 04:20:44 +00001210- Added a new itertools functions: combinations_with_replacement()
1211 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +00001212
Georg Brandl1cdd83c2009-04-05 20:24:29 +00001213- Issue #5032: added a step argument to itertools.count() and
Raymond Hettinger30729212009-02-12 06:28:27 +00001214 allowed non-integer arguments.
1215
Jesse Noller41faa542009-01-25 03:45:53 +00001216- Fix and properly document the multiprocessing module's logging
1217 support, expose the internal levels and provide proper usage
1218 examples.
1219
Mark Dickinsoncddcf442009-01-24 21:46:33 +00001220- Issue #1672332: fix unpickling of subnormal floats, which was
1221 producing a ValueError on some platforms.
1222
Martin v. Löwisacbf4612009-01-24 16:19:45 +00001223- Issue #3881: Help Tcl to load even when started through the
1224 unreadable local symlink to "Program Files" on Vista.
1225
Martin v. Löwis59e47792009-01-24 14:10:07 +00001226- Issue #4710: Extract directories properly in the zipfile module;
1227 allow adding directories to a zipfile.
1228
Vinay Sajipb672b6d2009-02-19 12:36:11 +00001229- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +00001230 --without-threads argument. When this occurs, _multiprocessing will
1231 be disabled, and not compiled.
1232
Antoine Pitrou08838b62009-01-21 00:55:13 +00001233- Issue #5008: When a file is opened in append mode with the new IO library,
1234 do an explicit seek to the end of file (so that e.g. tell() returns the
1235 file size rather than 0). This is consistent with the behaviour of the
1236 traditional 2.x file object.
1237
Vinay Sajip6268cbc2009-01-21 00:19:28 +00001238- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
1239 parameter was set.
1240
Mark Dickinson8dd05142009-01-20 20:43:58 +00001241- Issue #4842: Always append a trailing 'L' when pickling longs using
1242 pickle protocol 0. When reading, the 'L' is optional.
1243
Brett Cannonafccd632009-01-20 02:21:27 +00001244- Add the importlib package.
1245
Jesse Noller9a0fc972009-01-18 21:12:58 +00001246- Issue #4301: Patch the logging module to add processName support, remove
1247 _check_logger_class from multiprocessing.
1248
Jesse Noller1cbb17a2009-01-18 19:45:18 +00001249- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +00001250 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +00001251
Benjamin Peterson9953a8d2009-01-17 04:15:01 +00001252- Issue #4959: inspect.formatargspec now works for keyword only arguments
1253 without defaults.
1254
Jesse Noller6214edd2009-01-19 16:23:53 +00001255- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
1256 for *nix machines for negative handles and large int handles. Without this check
1257 it is possible to segfault the interpreter.
1258
Jesse Nollerb0516a62009-01-18 03:11:38 +00001259- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
1260 in sharedctypes.py.
1261
1262- Issue #1225107: inspect.isclass() returned True for instances with a custom
1263 __getattr__.
1264
Gregory P. Smithde3369f2009-01-12 04:50:11 +00001265- Issue #3826 and #4791: The socket module now closes the underlying socket
1266 appropriately when it is being used via socket.makefile() objects
1267 rather than delaying the close by waiting for garbage collection to do it.
1268
Raymond Hettingerb8baf632009-01-14 02:20:07 +00001269- Issue #1696199: Add collections.Counter() for rapid and convenient
1270 counting.
1271
Antoine Pitrou308705e2009-01-10 16:22:51 +00001272- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
1273
Thomas Heller5e4e4272009-01-08 09:34:20 +00001274- Issue #4867: Fixed a crash in ctypes when passing a string to a
1275 function without defining argtypes.
1276
Antoine Pitrou42db3ef2009-01-04 21:37:59 +00001277- Issue #4272: Add an optional argument to the GzipFile constructor to override
1278 the timestamp in the gzip stream. The default value remains the current time.
1279 The information can be used by e.g. gunzip when decompressing. Patch by
1280 Jacques Frechet.
1281
Mark Dickinson315a20a2009-01-04 21:34:18 +00001282- Restore Python 2.3 compatibility for decimal.py.
1283
Guilherme Polo3f5f8222009-01-03 22:00:39 +00001284- Issue #3638: Remove functions from _tkinter module level that depend on
1285 TkappObject to work with multiple threads.
1286
Vinay Sajip6268cbc2009-01-21 00:19:28 +00001287- Issue #4718: Adapt the wsgiref package so that it actually works with
1288 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +00001289 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
1290
Raymond Hettinger771ed762009-01-03 19:20:32 +00001291- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
1292 to the decimal module.
1293
Georg Brandl3a9b0622009-01-03 22:07:57 +00001294- Fractions.from_float() no longer loses precision for integers too big to
1295 cast as floats.
1296
Mark Dickinsonf9236412009-01-02 23:23:21 +00001297- Issue #4812: add missing underscore prefix to some internal-use-only
1298 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
1299
Georg Brandl1cdd83c2009-04-05 20:24:29 +00001300- Issue #4790: The nsmallest() and nlargest() functions in the heapq module
Georg Brandl3a9b0622009-01-03 22:07:57 +00001301 did unnecessary work in the common case where no key function was specified.
1302
Georg Brandlb1441c72009-01-03 22:33:39 +00001303- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
1304 the function is not a generator.
1305
Vinay Sajip6268cbc2009-01-21 00:19:28 +00001306- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
1307 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +00001308
Vinay Sajip6268cbc2009-01-21 00:19:28 +00001309- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +00001310 function. Original patch by Thomas Heller.
1311
Martin v. Löwis1f1620e2008-12-29 16:27:13 +00001312- Issue #3767: Convert Tk object to string in tkColorChooser.
1313
Martin v. Löwise354d782008-12-29 16:03:04 +00001314- Issue #3248: Allow placing ScrolledText in a PanedWindow.
1315
Antoine Pitrou5acd41e2008-12-28 14:29:00 +00001316- Issue #4444: Allow assertRaises() to be used as a context handler, so that
1317 the code under test can be written inline if more practical.
1318
Georg Brandldb7b6b92009-01-01 15:53:14 +00001319- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
1320 works as expected in the interactive environment.
1321
Antoine Pitroudb5fe662008-12-27 15:50:40 +00001322- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
1323 Gabriel Genellina.
1324
Antoine Pitrou180a3362008-12-14 16:36:46 +00001325- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
1326 boundary.
1327
Nick Coghlanf088e5e2008-12-14 11:50:48 +00001328- Issue #4223: inspect.getsource() will now correctly display source code
1329 for packages loaded via zipimport (or any other conformant PEP 302
1330 loader). Original patch by Alexander Belopolsky.
1331
1332- Issue #4201: pdb can now access and display source code loaded via
1333 zipimport (or any other conformant PEP 302 loader). Original patch by
1334 Alexander Belopolsky.
1335
1336- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
1337 302 conformant loader) will now work correctly in most cases (they
1338 are still subject to the constraints that exist for all code running
1339 from inside a module loaded via a PEP 302 loader and attempting to
1340 perform IO operations based on __file__). Original patch by
1341 Alexander Belopolsky.
1342
1343- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
1344 allows backporting to maintenance branches. Original patch by
1345 Alexander Belopolsky.
1346
Antoine Pitrou7c59bc62008-12-13 23:20:54 +00001347- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
1348 a non-ASCII letter.
1349
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +00001350- Issue #4616: TarFile.utime(): Restore directory times on Windows.
1351
Benjamin Peterson433f32c2008-12-12 01:25:05 +00001352- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
1353 codec cannot be found. This is for compatibility with the builtin behavior.
1354
Facundo Batista708d5812008-12-11 04:20:07 +00001355- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
1356 give correct results in the case where one argument is a quiet NaN
1357 and the other is a finite number that requires rounding.
1358
Skip Montanaroc1ce2862008-12-06 17:25:02 +00001359- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
1360 libs.
1361
Georg Brandlf9734072008-12-07 15:30:06 +00001362- Added the subprocess.check_call_output() convenience function to get output
1363 from a subprocess on success or raise an exception on error.
1364
1365- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1366 support unusual filenames (such as those containing semi-colons) in
1367 Content-Disposition headers.
1368
1369- Issue #4384: Added logging integration with warnings module using
1370 captureWarnings(). This change includes a NullHandler which does nothing;
1371 it will be of use to library developers who want to avoid the "No handlers
1372 could be found for logger XXX" message which can appear if the library user
1373 doesn't configure logging.
1374
1375- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
1376 exception.
1377
Georg Brandleee31162008-12-07 15:15:22 +00001378- Issue #4529: fix the parser module's validation of try-except-finally
1379 statements.
1380
1381- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
1382 not a malformed option.
1383
1384- Added the subprocess.check_output() convenience function to get output
1385 from a subprocess on success or raise an exception on error.
1386
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +00001387- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
1388 the corresponding tests now pass.
1389
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +00001390- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
1391 it was calling the wrong open() function.
1392
Fred Drake9a0a65b2008-12-04 19:24:50 +00001393- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1394 support unusual filenames (such as those containing semi-colons) in
1395 Content-Disposition headers.
1396
Matthias Klose2c7e3ee2009-01-10 17:08:25 +00001397- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
1398 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
1399
Benjamin Peterson5c6d7872009-02-06 02:40:07 +00001400- Issue #5104: The socket module now raises OverflowError when 16-bit port and
1401 protocol numbers are supplied outside the allowed 0-65536 range on bind()
1402 and getservbyport().
1403
Jeroen Ruigrok van der Werven0a866942009-05-08 14:18:00 +00001404- Windows locale mapping updated to Vista.
1405
Antoine Pitrou2a013ea2008-12-27 20:39:28 +00001406Tools/Demos
1407-----------
1408
Antoine Pitrou8a681222009-02-07 17:13:31 +00001409- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
1410 and make it 2.6-compatible.
1411
Guilherme Poloa7d27972009-01-28 16:06:51 +00001412- Ttk demos added in Demo/tkinter/ttk/
1413
Antoine Pitrou2a013ea2008-12-27 20:39:28 +00001414- Issue #4677: add two list comprehension tests to pybench.
1415
Georg Brandlb1441c72009-01-03 22:33:39 +00001416
1417Build
1418-----
1419
Benjamin Petersonf53eec82009-05-23 19:36:27 +00001420- Issue #6094: Build correctly with Subversion 1.7.
1421
Martin v. Löwis8482ef92009-05-05 16:14:30 +00001422- Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
1423
Antoine Pitrou8966c992009-05-01 21:18:27 +00001424- Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
1425 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
1426
Matthias Klose55708cc2009-04-30 08:06:49 +00001427- Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
Vinay Sajipaffbd872009-06-11 10:11:47 +00001428 the order that backends for the dbm extension are checked.
Matthias Klose55708cc2009-04-30 08:06:49 +00001429
Matthias Klose906785c2009-02-22 23:18:38 +00001430- Link the shared python library with $(MODLIBS).
1431
Martin v. Löwis11f72102009-02-10 13:13:30 +00001432- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
1433
Martin v. Löwisbc186a82009-02-02 15:32:22 +00001434- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
1435
Martin v. Löwise97637d2009-01-11 09:45:11 +00001436- Issue #4895: Use _strdup on Windows CE.
1437
Georg Brandlb1441c72009-01-03 22:33:39 +00001438- Issue #4472: "configure --enable-shared" now works on OSX
1439
1440- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
1441
1442- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
1443
1444- Issue #4289: Remove Cancel button from AdvancedDlg.
1445
1446- Issue #1656675: Register a drop handler for .py* files on Windows.
1447
1448- Issue #4120: Exclude manifest from extension modules in VS2008.
1449
1450- Issue #4091: Install pythonxy.dll in system32 again.
1451
1452- Issue #4018: Disable "for me" installations on Vista.
1453
1454- Issue #3758: Add ``patchcheck`` build target to .PHONY.
1455
1456- Issue #4204: Fixed module build errors on FreeBSD 4.
1457
1458
1459C-API
1460-----
1461
Mark Dickinson21776072009-02-10 16:13:25 +00001462- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
1463 for negative arguments. Previously, it raised TypeError.
1464
Georg Brandlb1441c72009-01-03 22:33:39 +00001465- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
1466
1467- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
1468 the GIL is released, or owned by another thread.
1469
1470- Issue #4122: On Windows, fix a compilation error when using the
1471 Py_UNICODE_ISSPACE macro in an extension module.
1472
1473
Mark Dickinsone675f082008-12-11 21:56:00 +00001474Extension Modules
1475-----------------
1476
Gregory P. Smith365a1862009-02-12 07:35:29 +00001477- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
1478 supporting objects as input no matter how it was compiled (built in
1479 implementations or external openssl library).
1480
Mark Dickinson29500f62009-01-15 15:36:10 +00001481- Issue #4397: Fix occasional test_socket failure on OS X.
1482
Martin v. Löwisa9b54c72009-01-11 09:30:50 +00001483- Issue #4279: Fix build of parsermodule under Cygwin.
1484
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +00001485- Issue #4751: hashlib now releases the GIL when hashing large buffers
1486 (with a hardwired threshold of 2048 bytes), allowing better parallelization
1487 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
1488
Martin v. Löwis5c88d812009-01-02 20:47:48 +00001489- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
1490
Antoine Pitrou31f30b12009-01-02 17:34:35 +00001491- Issue #4738: Each zlib object now has a separate lock, allowing to compress
1492 or decompress several streams at once on multi-CPU systems. Also, the GIL
1493 is now released when computing the CRC of a large buffer. Patch by ebfe.
1494
Georg Brandlb1441c72009-01-03 22:33:39 +00001495- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
1496
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +00001497- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
1498
Mark Dickinsone675f082008-12-11 21:56:00 +00001499- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
1500 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +00001501
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +00001502- Issue #4583: array.array would not always prohibit resizing when a buffer
1503 has been exported, resulting in an interpreter crash when accessing the
1504 buffer.
1505
Martin v. Löwis841edad2008-11-30 10:36:49 +00001506
Jack Diederiche0cbd692009-04-01 04:27:09 +00001507- Issue #5228: Make functools.partial objects can now be pickled.
1508
Guilherme Polo9de29af2009-01-28 20:40:48 +00001509Tests
1510-----
1511
Guilherme Polo2a998fa2009-06-21 17:40:07 +00001512- Issue #5450: Moved tests involving loading tk from Lib/test/test_tcl to
1513 Lib/tkinter/test/test_tkinter/test_loadtk. With this, these tests demonstrate
1514 the same behaviour as test_ttkguionly (and now also test_tk) which is to
1515 skip the tests if DISPLAY is defined but can't be used.
1516
R. David Murraya21e4ca2009-03-31 23:16:50 +00001517- regrtest no longer treats ImportError as equivalent to SkipTest. Imports
Vinay Sajipad5fa2f2009-04-27 13:55:05 +00001518 that should cause a test to be skipped are now done using import_module
R. David Murraya21e4ca2009-03-31 23:16:50 +00001519 from test support, which does the conversion.
1520
Guilherme Polo9de29af2009-01-28 20:40:48 +00001521- Issue #5083: New 'gui' resource for regrtest.
1522
1523
Brett Cannon7317c1e2008-11-25 19:19:17 +00001524Docs
1525----
1526
Georg Brandl52b92cc2008-05-25 09:43:03 +00001527
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001528**(For information about older versions, consult the HISTORY file.)**