blob: a736ad8b2c9902ca8c856a38559c0687c4c3625b [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
Mark Dickinson4eb88b32009-05-11 16:41:34 +00007What's New in Python 3.1 release candidate 1?
8=============================================
Benjamin Petersonaccdca52009-05-06 23:26:59 +00009
10*Release date: XXXX-XX-XX*
11
12Core and Builtins
13-----------------
14
Eric Smith41669ca2009-05-23 14:23:22 +000015- Issue #6089: Fixed str.format with certain invalid field specifiers
16 that would raise SystemError.
17
Mark Dickinson6b1e43b2009-05-20 18:41:04 +000018- Issue #5829: complex("1e500") no longer raises OverflowError. This
19 makes it consistent with float("1e500") and interpretation of real
20 and imaginary literals.
21
Hirokazu Yamamoto8223c242009-05-17 04:21:53 +000022- Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
23
R. David Murraydd226ea2009-05-13 12:27:21 +000024- Issue #5994: the marshal module now has docstrings.
25
Mark Dickinsond1ec8b22009-05-11 15:45:15 +000026- Issue #5981: Fix three minor inf/nan issues in float.fromhex:
27 (1) inf and nan strings with trailing whitespace were incorrectly
28 rejected; (2) parsing of strings representing infinities and nans
29 was locale aware; and (3) the interpretation of fromhex('-nan')
30 didn't match that of float('-nan').
31
Benjamin Petersonaccdca52009-05-06 23:26:59 +000032Library
33-------
34
R. David Murraycaa27b72009-05-23 18:49:56 +000035- Issue #5259: smtplib plain auth login no longer gives a traceback. Fix
36 by Musashi Tamura, tests by Marcin Bachry.
37
Antoine Pitrouc3ee1662009-05-23 16:02:33 +000038- Issue #1983: Fix functions taking or returning a process identifier to use
39 the dedicated C type ``pid_t`` instead of a C ``int``. Some platforms have
40 a process identifier type wider than the standard C integer type.
41
R. David Murray87e20742009-05-23 01:30:26 +000042- Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket.
43 Patch by Farhan Ahmad, test by Marcin Bachry.
44
Antoine Pitrou6e610062009-05-15 17:04:50 +000045- Issue #2116: Weak references and weak dictionaries now support copy()ing and
46 deepcopy()ing.
47
Antoine Pitrouc1d09362009-05-15 12:15:51 +000048- Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
49
Antoine Pitrou37d1c182009-05-14 21:54:00 +000050- Issue #5918: Fix a crash in the parser module.
51
Antoine Pitrou2ca24f02009-05-14 21:30:46 +000052- Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
53
Antoine Pitroue4501852009-05-14 18:55:55 +000054- Issue #5006: Better handling of unicode byte-order marks (BOM) in the io
55 library. This means, for example, that opening an UTF-16 text file in
56 append mode doesn't add a BOM at the end of the file if the file isn't
57 empty.
58
R. David Murray74b89242009-05-13 17:33:03 +000059- Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
60 file is a binary. Patch by Brodie Rao, tests by Daniel Diniz. This fix
61 corrects a pydoc regression.
62
R. David Murray99352742009-05-07 18:24:38 +000063- Issue 5955: aifc's close method did not close the file it wrapped,
64 now it does. This also means getfp method now returns the real fp.
65
Benjamin Peterson932073a2009-05-23 16:14:33 +000066Installation
67------------
68
69- Issue #6047: fullinstall has been removed because Python 3's executable will
70 now be known as python3.
Benjamin Petersonaccdca52009-05-06 23:26:59 +000071
Martin v. Löwisdb1c3992009-05-23 10:38:26 +000072Extension Modules
73-----------------
74
75- Issue #6093: Fix off-by-one error in locale.strxfrm.
76
Benjamin Peterson3dc22e82009-05-23 17:09:43 +000077- The _functools and _locale modules are now built into the shared library.
78
Brett Cannon1262e7c2009-05-11 01:47:11 +000079Tests
80-----
81
82- Issue 5442: Tests for importlib were not properly skipping case-sensitivity
83 tests on darwin even when the OS was installed on a case-sensitive
84 filesystem. Also fixed tests that should not be run when
85 sys.dont_write_bytecode is true.
86
87
Benjamin Petersonbd35b032009-04-04 23:16:41 +000088What's New in Python 3.1 beta 1?
89================================
90
Benjamin Peterson5c5f3de2009-05-06 20:43:28 +000091*Release date: 2009-05-06*
Benjamin Petersonbd35b032009-04-04 23:16:41 +000092
93Core and Builtins
94-----------------
95
Mark Dickinson865e01a2009-05-07 16:37:01 +000096- Issue #5914: Add new C API function PyOS_string_to_double, and
97 deprecate PyOS_ascii_strtod and PyOS_ascii_atof.
98
Eric Smith741191f2009-05-06 13:08:15 +000099- Issue #3382: float.__format__, complex.__format__, and %-formatting
100 no longer map 'F' to 'f'. Because of issue #5859 (below), this only
101 affects nan -> NAN and inf -> INF.
102
Mark Hammond5a607a32009-05-06 08:04:54 +0000103- Issue #5799: ntpath (ie, os.path on Windows) fully supports UNC pathnames
104 in all operations, including splitdrive, split, etc. splitunc() now issues
105 a PendingDeprecation warning.
106
Eric Smith63376222009-05-05 14:04:18 +0000107- Issue #5920: For float.__format__, change the behavior with the
108 empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
109 to be like 'g' but with at least one decimal point and with a
110 default precision of 12. Previously, the behavior the same but with
111 a default precision of 6. This more closely matches str(), and
112 reduces surprises when adding alignment flags to the empty
113 presentation type. This also affects the new complex.__format__ in
114 the same way.
115
Martin v. Löwis011e8422009-05-05 04:43:17 +0000116- Implement PEP 383, Non-decodable Bytes in System Character Interfaces.
117
R. David Murrayb18500d2009-05-04 22:59:07 +0000118- Issue #5890: in subclasses of 'property' the __doc__ attribute was
119 shadowed by classtype's, even if it was None. property now
120 inserts the __doc__ into the subclass instance __dict__.
121
Antoine Pitrou244651a2009-05-04 18:56:13 +0000122- Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
123 sequences. Patch by Nick Barnes and Victor Stinner.
124
Martin v. Löwise0a2b722009-05-10 08:08:56 +0000125- Issue #3672: Reject surrogates in utf-8 codec; add surrogatepass error handler.
Martin v. Löwisdb12d452009-05-02 18:52:14 +0000126
Benjamin Petersond2e0c792009-05-01 20:40:59 +0000127- Issue #5883: In the io module, the BufferedIOBase and TextIOBase ABCs have
128 received a new method, detach(). detach() disconnects the underlying stream
129 from the buffer or text IO and returns it.
130
Mark Dickinson33841c32009-05-01 15:37:04 +0000131- Issue #5859: Remove switch from '%f' to '%g'-style formatting for
132 floats with absolute value over 1e50. Also remove length
133 restrictions for float formatting: '%.67f' % 12.34 and '%.120e' %
134 12.34 no longer raise an exception.
Mark Dickinsonf489caf2009-05-01 11:42:00 +0000135
Eric Smith741191f2009-05-06 13:08:15 +0000136- Issue #1588: Add complex.__format__. For example,
Eric Smith58a42242009-04-30 01:00:33 +0000137 format(complex(1, 2./3), '.5') now produces a sensible result.
138
Mark Dickinsond3ca5572009-04-29 18:47:07 +0000139- Issue #5864: Fix empty format code formatting for floats so that it
140 never gives more than the requested number of significant digits.
141
Eric Smith6dc46f52009-04-27 20:39:49 +0000142- Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
143 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
144
Eric Smithcc32a112009-04-26 21:35:14 +0000145- Issue #5835: Deprecate PyOS_ascii_formatd.
146
Martin v. Löwis71efeb72009-04-26 01:02:07 +0000147- Issue #4971: Fix titlecase for characters that are their own
148 titlecase, but not their own uppercase.
149
Benjamin Peterson193152c2009-04-25 01:08:45 +0000150- Issue #5283: Setting __class__ in __del__ caused a segfault.
151
Mark Dickinsonad476da2009-04-23 19:14:16 +0000152- Issue #5816: complex(repr(z)) now recovers z exactly, even when
153 z involves nans, infs or negative zeros.
154
Mark Dickinson4a16e3a2009-04-23 19:15:48 +0000155- Issue #3166: Make int -> float conversions correctly rounded.
Mark Dickinsonc6300392009-04-20 21:38:00 +0000156
Mark Dickinsone6a076d2009-04-18 11:48:33 +0000157- Issue #1869 (and many duplicates): make round(x, n) correctly
158 rounded for a float x, by using the decimal <-> binary conversions
159 from Python/dtoa.c. As a consequence, (e.g.) round(x, 2) now
160 consistently agrees with format(x, '.2f').
161
Benjamin Petersonae937c02009-04-18 20:54:08 +0000162- Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
163 some builtin types.
164
Eric Smith0923d1d2009-04-16 20:16:10 +0000165- Issue #5772: format(1e100, '<') produces '1e+100', not '1.0e+100'.
166
Eric Smith35e84722009-04-16 20:21:28 +0000167- Issue #5515: str.format() type 'n' combined with commas and leading
168 zeros no longer gives odd results with ints and floats.
Eric Smith0923d1d2009-04-16 20:16:10 +0000169
170- Implement PEP 378, Format Specifier for Thousands Separator, for
171 floats.
172
Mark Dickinson3370cce2009-04-17 22:40:53 +0000173- The str function switches to exponential notation at
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000174 1e11, not 1e12. This avoids printing 13 significant digits in
175 situations where only 12 of them are correct. Example problem
176 value: str(1e11 + 0.5). (This minor issue has existed in 2.x for a
177 long time.)
178
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000179- Issue #1580: On most platforms, use a 'short' float repr: for a
180 finite float x, repr(x) now outputs a string based on the shortest
181 sequence of decimal digits that rounds to x. Previous behaviour was
182 to output 17 significant digits and then strip trailing zeros.
Mark Dickinson3370cce2009-04-17 22:40:53 +0000183 Another minor difference is that the new repr switches to
184 exponential notation at 1e16 instead of the previous 1e17; this
185 avoids misleading output in some cases.
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000186
187 There's a new sys attribute sys.float_repr_style, which takes
188 the value 'short' to indicate that we're using short float repr,
189 and 'legacy' if the short float repr isn't available for one
190 reason or another.
191
192 The float repr change involves incorporating David Gay's 'perfect
193 rounding' code into the Python core (it's in Python/dtoa.c). As a
194 secondary consequence, all string-to-float and float-to-string
195 conversions (including all float formatting operations) will be
196 correctly rounded on these platforms.
197
198 See issue 1580 discussions for details of platforms for which
199 this change does not apply.
200
Benjamin Peterson2808d3c2009-04-15 21:34:27 +0000201- Issue #5759: float() didn't call __float__ on str subclasses.
202
Georg Brandlabc38772009-04-12 15:51:51 +0000203- The string.maketrans() function is deprecated; there is a new static method
204 maketrans() on the bytes and bytearray classes. This removes confusion about
205 the types string.maketrans() is supposed to work with, and mirrors the
206 methods available on the str class.
207
R. David Murraydc6da8a2009-04-09 22:16:43 +0000208- Issue #2170: refactored xml.dom.minidom.normalize, increasing both
209 its clarity and its speed.
210
Matthias Klose091c7b12009-04-07 13:24:27 +0000211- Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
212 to avoid compiler warnings.
213
Walter Dörwald8dc33d52009-05-06 14:41:26 +0000214- Issue #3739: The unicode-internal encoder now reports the number of characters
215 consumed like any other encoder (instead of the number of bytes).
216
Benjamin Peterson0b4915e2009-04-25 21:11:45 +0000217Installation
218------------
219
220- Issue #5756: Install idle and pydoc with a 3 suffix.
221
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000222Library
223-------
224
Tarek Ziadédd9f65f2009-05-06 07:26:24 +0000225- Issue #5940: distutils.command.build_clib.check_library_list was not doing
226 the right type checkings anymore.
227
Thomas Heller00cfc372009-05-05 19:04:40 +0000228- Issue #4875: On win32, ctypes.util.find_library does no longer
229 return directories.
230
Georg Brandl243ad662009-05-05 09:00:19 +0000231- Issue #5142: Add the ability to skip modules while stepping to pdb.
232
Georg Brandl991f9202009-05-05 08:31:54 +0000233- Issue #1309567: Fix linecache behavior of stripping subdirectories when
234 looking for files given by a relative filename.
235
Georg Brandleaa84ef2009-05-05 08:14:33 +0000236- Issue #5923: Update the ``turtle`` module to version 1.1, add two new
237 turtle demos in Demo/turtle.
238
Antoine Pitrou3c33e082009-05-04 21:21:36 +0000239- Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
240 extracting a file to the root directory.
241
Hirokazu Yamamotobbb9be72009-05-04 05:56:46 +0000242- Issue #5913: os.listdir() should fail for empty path on windows.
243
Antoine Pitroua9f48a02009-05-02 21:41:14 +0000244- Issue #5084: unpickling now interns the attribute names of pickled objects,
245 saving memory and avoiding growth in size of subsequent pickles. Proposal
246 and original patch by Jake McGuire.
247
Benjamin Petersonc6b607d2009-05-02 12:36:44 +0000248- The json module now works exclusively with str and not bytes.
249
Gregory P. Smithe54dff52009-05-01 22:13:48 +0000250- Issue #3959: The ipaddr module has been added to the standard library.
251 Contributed by Google.
252
Antoine Pitrou7fff0962009-05-01 21:09:44 +0000253- Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
254 error when a named pipe is encountered, rather than blocking infinitely.
255
Raymond Hettinger1f0db402009-04-29 00:38:08 +0000256- Issue #5857: tokenize.tokenize() now returns named tuples.
257
Thomas Hellerc1edc2d2009-04-28 19:55:58 +0000258- Issue #4305: ctypes should now build again on mipsel-linux-gnu
259
Antoine Pitrou7a0fedf2009-04-27 22:31:40 +0000260- Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
261 string is already in normalized form, by performing a quick check beforehand.
262 Original patch by Rauli Ruohonen.
263
Antoine Pitrou57f3d932009-04-27 21:04:19 +0000264- Issue #5853: calling a function of the mimetypes module from several threads
265 at once could hit the recursion limit if the mimetypes database hadn't been
266 initialized before.
267
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000268- Issue #5854: Updated __all__ to include some missing names and remove some
269 names which should not be exported.
270
Thomas Heller34596a92009-04-24 20:50:00 +0000271- Issue #3102: All global symbols that the _ctypes extension defines
272 are now prefixed with 'Py' or '_ctypes'.
273
274- Issue #5041: ctypes does now allow pickling wide character.
275
Mark Dickinsond4d95f82009-04-24 14:06:19 +0000276- Issue #5812: For the two-argument form of the Fraction constructor,
277 Fraction(m, n), m and n are permitted to be arbitrary Rational
278 instances.
279
Mark Dickinsoncf63f2f2009-04-22 17:50:21 +0000280- Issue #5812: Fraction('1e6') is valid: more generally, any string
281 that's valid for float() is now valid for Fraction(), with the
282 exception of strings representing NaNs and infinities.
283
Antoine Pitroucf4c7492009-04-19 00:09:36 +0000284- Issue #5734: BufferedRWPair was poorly tested and had several glaring
285 bugs. Patch by Brian Quinlan.
286
R. David Murray9e94ddf2009-04-13 17:06:33 +0000287- Issue #1161031: fix readwrite select flag handling: POLLPRI now
288 results in a handle_expt_event call, not handle_read_event, and POLLERR
289 and POLLNVAL now call handle_close, not handle_expt_event. Also,
290 dispatcher now has an 'ignore_log_types' attribute for suppressing
291 log messages, which is set to 'warning' by default.
292
Matthias Klosea3d29e82009-04-07 13:13:10 +0000293- Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
294 new arguments introduced in 2.5.
295
Walter Dörwald1b08b302009-04-25 14:13:56 +0000296- Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
297 makeunicodedata.py and regenerated the Unicode database (This fixes
298 u'\u1d79'.lower() == '\x00').
299
Matthias Klose535336f2009-04-07 13:49:45 +0000300Extension Modules
301-----------------
302
Benjamin Petersone04b6272009-05-04 22:25:21 +0000303- Issue #5881: Remove old undocumented compatibility interfaces in hashlib and
304 pwd.
305
Mark Dickinsonea835e72009-04-19 20:40:33 +0000306- Issue #5463: In struct module, remove deprecated float coercion
307 for integer type codes: struct.pack('L', 0.3) should now raise
308 an error. The _PY_STRUCT_FLOAT_COERCE constant has been removed.
309 The version number has been bumped to 0.3.
310
Matthias Klose535336f2009-04-07 13:49:45 +0000311- Issue #5359: Readd the Berkley-DB detection code to allow _dbm be built
312 using Berkley-DB.
313
Nick Coghlan47384702009-04-22 16:13:36 +0000314Tests
315-----
316
317- Issue #5354: New test support function import_fresh_module() makes
318 it easy to import both normal and optimised versions of modules.
319 test_heapq and test_warnings have been adjusted to use it, tests for
320 other modules with both C and Python implementations in the stdlib
321 can be adjusted to use it over time.
322
Walter Dörwald4ba80132009-04-25 12:48:43 +0000323- Issue #5837: Certain sequences of calls to set() and unset() for
324 support.EnvironmentVarGuard objects restored the environment variables
325 incorrectly on __exit__.
326
Benjamin Petersonb173f782009-05-05 22:31:58 +0000327C-API
328-----
329
330- Issue #5630: A replacement PyCObject API, PyCapsule, has been added.
331
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000332
Benjamin Petersond1735892009-03-07 18:46:21 +0000333What's New in Python 3.1 alpha 2?
334=================================
335
Benjamin Peterson88f14352009-04-04 21:06:52 +0000336*Release date: 2009-4-4*
Benjamin Petersond1735892009-03-07 18:46:21 +0000337
338Core and Builtins
339-----------------
Benjamin Petersone099b372009-04-04 17:09:35 +0000340
Eric Smith1e1d7d22009-04-03 22:25:33 +0000341- Implement PEP 378, Format Specifier for Thousands Separator, for
342 integers.
Benjamin Petersond1735892009-03-07 18:46:21 +0000343
Benjamin Peterson8f76b492009-04-03 22:22:42 +0000344- Issue #5666: Py_BuildValue's 'c' code should create byte strings.
345
Benjamin Peterson7fe98532009-04-02 00:33:55 +0000346- Issue #5499: The 'c' code for argument parsing functions now only accepts a
347 byte, and the 'C' code only accepts a unicode character.
348
Georg Brandl406b3d82009-04-11 21:24:37 +0000349- Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
350 when hitting the recursion limit under certain circumstances.
351
Brett Cannon0759dd62009-04-01 18:13:07 +0000352- Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
353
Georg Brandlab6f2f62009-03-31 04:16:10 +0000354- Fix a segfault when running test_exceptions with coverage, caused by
355 insufficient checks in accessors of Exception.__context__.
356
Guido van Rossum0ad59d42009-03-30 22:01:35 +0000357- Issue #5604: non-ASCII characters in module name passed to
358 imp.find_module() were converted to UTF-8 while the path is
359 converted to the default filesystem encoding, causing nonsense.
360
Benjamin Peterson09832742009-03-26 17:15:46 +0000361- Issue #5126: str.isprintable() returned False for space characters.
362
Ronald Oussorenfa1fcd12009-03-30 23:16:10 +0000363- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
364 the end sys.path, for compatibility with the system install of Python.
365
Antoine Pitrou3a652b12009-03-23 18:52:06 +0000366- Issue #4688: Add a heuristic so that tuples and dicts containing only
367 untrackable objects are not tracked by the garbage collector. This can
368 reduce the size of collections and therefore the garbage collection overhead
369 on long-running programs, depending on their particular use of datatypes.
370
Mark Dickinson17e4fdd2009-03-23 18:44:57 +0000371- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
372 improve its performance. Long divisions and remainder operations
373 are now between 50% and 150% faster.
374
Mark Dickinsonbd792642009-03-18 20:06:12 +0000375- Issue #4258: Make it possible to use base 2**30 instead of base
376 2**15 for the internal representation of integers, for performance
377 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
378 --enable-big-digits option to configure, which overrides the
379 default. Add sys.int_info structseq to provide information about
380 the internal format.
381
Mark Dickinson081dfee2009-03-18 14:47:41 +0000382- Issue #4474: PyUnicode_FromWideChar now converts characters outside
383 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
384 and sizeof(Py_UNICODE) == 2.
385
Eric Smith8ec90442009-03-14 12:29:34 +0000386- Issue #5237: Allow auto-numbered fields in str.format(). For
387 example: '{} {}'.format(1, 2) == '1 2'.
388
Antoine Pitrou652e7072009-03-13 19:25:20 +0000389- Issue #5392: when a very low recursion limit was set, the interpreter would
390 abort with a fatal error after the recursion limit was hit twice.
391
Matthias Klose042f1332009-04-04 14:32:42 +0000392- Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
393 short file names.
394
Benjamin Petersond1735892009-03-07 18:46:21 +0000395Library
396-------
397
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000398- Issue #2625: added missing items() call to the for loop in
R. David Murray548ac412009-04-02 19:44:43 +0000399 mailbox.MH.get_message().
400
Hye-Shik Chang944820b2009-04-02 10:33:16 +0000401- Issue #5640: Fix _multibytecodec so that CJK codecs don't repeat
402 error substitutions from non-strict codec error callbacks in
403 incrementalencoder and StreamWriter.
404
Georg Brandl33c28812009-04-01 23:07:29 +0000405- Issue #5656: Fix the coverage reporting when running the test suite with
406 the -T argument.
407
Raymond Hettinger3f10a952009-04-01 19:05:50 +0000408- Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
409
Georg Brandl4ed72ac2009-04-01 04:28:33 +0000410- Issue #5624: Fix the _winreg module name still used in several modules.
411
Benjamin Petersona1b49012009-03-31 23:11:32 +0000412- Issue #5628: Fix io.TextIOWrapper.read() with a unreadable buffer.
413
Jesse Nollera9314042009-03-31 22:36:44 +0000414- Issue #5619: Multiprocessing children disobey the debug flag and causes
415 popups on windows buildbots. Patch applied to work around this issue.
416
Jesse Noller32d68c22009-03-31 18:48:42 +0000417- Issue #5400: Added patch for multiprocessing on netbsd compilation/support
418
Hirokazu Yamamoto16caab02009-03-31 13:44:06 +0000419- Issue #5387: Fixed mmap.move crash by integer overflow.
420
Jesse Nollerf8d00852009-03-31 03:25:07 +0000421- Issue #5261: Patch multiprocessing's semaphore.c to support context
422 manager use: "with multiprocessing.Lock()" works now.
423
Brett Cannon7f6b4f82009-03-30 21:30:26 +0000424- Issue #5236: Change time.strptime() to only take strings. Didn't work with
425 bytes already but the failure was non-obvious.
426
Jesse Noller7af4ef82009-03-30 16:47:15 +0000427- Issue #5177: Multiprocessing's SocketListener class now uses
428 socket.SO_REUSEADDR on all connections so that the user no longer needs
429 to wait 120 seconds for the socket to expire.
430
Benjamin Peterson48e24782009-03-29 13:02:52 +0000431- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
432
Antoine Pitrou66994e12009-03-29 00:45:26 +0000433- Issue #1174606: Calling read() without arguments of an unbounded file
434 (typically /dev/zero under Unix) could crash the interpreter.
435
Benjamin Peterson59406a92009-03-26 17:10:29 +0000436- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
437 io.BufferedRandom have been deprecated for removal in Python 3.2.
438
Lars Gustäbel42e00912009-03-22 20:34:29 +0000439- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
440 forever on incomplete input. That caused tarfile.open() to hang when used
441 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
442 partial bzip2 compressed data.
443
Mark Dickinson79f52032009-03-17 23:12:51 +0000444- Issue #2110: Add support for thousands separator and 'n' type
445 specifier to Decimal.__format__
446
Mark Dickinson9c59fe02009-03-17 18:15:08 +0000447- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
448 '>' alignment characters.
449
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +0000450- The error detection code in FileIO.close() could fail to reflect the `errno`
451 value, and report it as -1 instead.
452
Antoine Pitroua28fcfd2009-03-13 23:42:55 +0000453- Issue #5016: FileIO.seekable() could return False if the file position
454 was negative when truncated to a C int. Patch by Victor Stinner.
455
Mark Dickinsonae681df2009-03-21 10:26:31 +0000456Extension Modules
457-----------------
458
Benjamin Petersone099b372009-04-04 17:09:35 +0000459- Issue #5391: mmap now deals exclusively with bytes.
460
Mark Dickinsonae681df2009-03-21 10:26:31 +0000461- Issue #5463: In struct module, remove deprecated overflow wrapping
462 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +0000463 struct.error instead of returning b'\xff\xff\xff\xff'. The
464 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
465 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +0000466
Benjamin Petersond1735892009-03-07 18:46:21 +0000467
Benjamin Petersona58a6262009-03-07 16:34:40 +0000468What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +0000469================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000470
Benjamin Petersona58a6262009-03-07 16:34:40 +0000471*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000472
473Core and Builtins
474-----------------
475
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +0000476- The io module has been reimplemented in C for speed.
477
Raymond Hettingerb0d56af2009-03-03 10:52:49 +0000478- Give dict views an informative __repr__.
479
Eric Smith5e5c0db2009-02-20 14:25:03 +0000480- Issue #5247: Improve error message when unknown format codes are
481 used when using str.format() with str, int, and float arguments.
482
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000483- Issue #5249: time.strftime returned malformed string when format string
484 contained non ascii character on windows.
485
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000486- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
487 source has already been decoded into str.
488
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000489- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
490 rotating the object pointer by 4 bits to the right.
491
Mark Dickinson87ec0852009-02-09 17:15:59 +0000492- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
493 it now forces its argument to double before testing for infinity.
494
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000495- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
496 returns a non-number type.
497
Benjamin Peterson87618552009-02-08 15:00:52 +0000498- Issue #5182: Removed memoryview.__str__.
499
Mark Dickinsonc008a172009-02-01 13:59:22 +0000500- Issue #1717: Removed builtin cmp() function, dropped tp_compare
501 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000502 the type definition cmpfunc. The tp_compare slot has been renamed
503 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000504
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000505- Issue #1242657: the __len__() and __length_hint__() calls in several tools
Raymond Hettingere8364232009-02-02 22:55:09 +0000506 were suppressing all exceptions. These include list() and bytearray().
507
Mark Dickinson1124e712009-01-28 21:25:58 +0000508- Issue #4707: round(x, n) now returns an integer if x is an integer.
509 Previously it returned a float.
510
Antoine Pitroub52ec782009-01-25 16:34:23 +0000511- Issue #4753: By enabling a configure option named '--with-computed-gotos'
512 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
513 evaluation loop is compiled with a new dispatch mechanism which gives
514 speedups of up to 20%, depending on the system, on various benchmarks.
515
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000516- Issue #4874: Most builtin decoders now reject unicode input.
517
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000518- Issue #4842: Don't allow trailing 'L' when constructing an integer
519 from a string.
520
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000521- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
522
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000523- Issue #4838: When a module is deallocated, free the memory backing the
524 optional module state data.
525
Mark Dickinson8055afd2009-01-17 10:04:45 +0000526- Issue #4910: Rename nb_long slot to nb_reserved, and change its
527 type to (void *).
528
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000529- Issue #4935: The overflow checking code in the expandtabs() method common
530 to str, bytes and bytearray could be optimized away by the compiler, letting
531 the interpreter segfault instead of raising an error.
532
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000533- Issue #3720: Fix a crash when an iterator modifies its class and removes its
534 __next__ method.
535
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000536- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
537 function no longer attempt to call the __long__ slot to convert an object
538 to an integer. Only the __int__ and __trunc__ slots are examined.
539
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000540- Issue #4893: Use NT threading on CE.
541
Martin v. Löwisec59d042009-01-12 07:59:10 +0000542- Issue #4915: Port sysmodule to Windows CE.
543
Antoine Pitrouab868312009-01-10 15:40:25 +0000544- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
545 common cases are optimized thanks to a dedicated fast path and a moderate
546 amount of loop unrolling.
547
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000548- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
549 collecting the oldest generation) so that allocating lots of objects without
550 destroying them does not show quadratic performance. Based on a proposal by
551 Martin von Löwis at
552 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
553
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000554- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000555 having been closed (for instance, a read() call could return some
556 previously buffered data). Patch by Dmitry Vasiliev.
557
Antoine Pitrou05608432009-01-09 18:53:14 +0000558- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
559 flag to work properly. Furthermore, when specifying -u, the text stdout
560 and stderr streams have line-by-line buffering enabled (the default being
561 to buffer arbitrary chunks of data).
562
Raymond Hettinger35631532009-01-09 03:58:09 +0000563- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
564 instead of ints (reducing its size from 4 to 8 times thereby reducing
565 Python's overall memory).
566
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000567- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
568 an existing .py counterpart, override the co_filename attributes of all
569 code objects if the original filename is obsolete (which can happen if the
570 file has been renamed, moved, or if it is accessed through different paths).
571 Patch by Ziga Seilnacht and Jean-Paul Calderone.
572
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000573- Issue #4580: Fix slicing of memoryviews when the item size is greater than
574 one byte. Also fixes the meaning of len() so that it returns the number of
575 items, rather than the size in bytes.
576
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000577- Issue #4075: Use OutputDebugStringW in Py_FatalError.
578
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000579- Issue #4747: When the terminal does not use utf-8, executing a script with
580 non-ascii characters in its name could fail with a "SyntaxError: None" error.
581
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000582- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000583 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000584
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000585- Issue #3680: Reference cycles created through a dict, set or deque iterator
586 did not get collected.
587
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000588- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
589 where the tp_hash and tp_dict slots are both NULL.
590
Georg Brandlccc47b62008-12-28 11:44:14 +0000591- Issue #4759: None is now allowed as the first argument of
592 bytearray.translate(). It was always allowed for bytes.translate().
593
Skip Montanaro80072cb2008-12-23 03:51:14 +0000594- Added test case to ensure attempts to read from a file opened for writing
595 fail.
596
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000597- Issue #3106: Speedup some comparisons (str/str and int/int).
598
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000599- Issue #2183: Simplify and optimize bytecode for list, dict and set
600 comprehensions. Original patch for list comprehensions by Neal Norwitz.
601
Antoine Pitrou621601a2008-12-17 23:18:19 +0000602- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
603 print elapsed times, not only when some objects are uncollectable /
604 unreachable. Original patch by Neil Schemenauer.
605
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000606- Issue #3439: Add a bit_length method to int.
607
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000608- Issue #2173: When getting device encoding, check that return value of
609 nl_langinfo is not the empty string. This was causing silent build
610 failures on OS X.
611
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000612- Issue #4597: Fixed several opcodes that weren't always propagating
613 exceptions.
614
615- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000616 context manager returns a value that cannot be converted to a bool.
617
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000618- Issue #4445: Replace "sizeof(PyBytesObject)" with
619 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
620 bytes instances. On a typical machine this saves 3 bytes of memory
621 (on average) per allocation of a bytes instance.
622
Christian Heimesa872de52008-12-05 08:26:55 +0000623- Issue #4533: File read operation was dreadfully slow due to a slowly
624 growing read buffer. Fixed by using the same growth rate algorithm as
625 Python 2.x.
626
Antoine Pitrou5504e892008-12-06 21:27:53 +0000627- Issue #4509: Various issues surrounding resize of bytearray objects to
628 which there are buffer exports (e.g. memoryview instances).
629
Georg Brandlf9734072008-12-07 15:30:06 +0000630- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
631 method on file objects with closefd=False. The file descriptor is still
632 kept open but the file object behaves like a closed file. The ``FileIO``
633 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000634
Antoine Pitroubc420402008-12-07 20:14:49 +0000635- Issue #4569: Interpreter crash when mutating a memoryview with an item size
636 larger than 1.
637
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000638- Issue #4748: Lambda generators no longer return a value.
639
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000640- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
641
Walter Dörwaldc1651a02009-05-03 22:55:55 +0000642- Issue #5108: Handle %s like %S, %R and %A in PyUnicode_FromFormatV(): Call
643 PyUnicode_DecodeUTF8() once, remember the result and output it in a second
644 step. This avoids problems with counting UTF-8 bytes that ignores the effect
645 of using the replace error handler in PyUnicode_DecodeUTF8().
646
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000647Library
648-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000649
Tarek Ziadé822eb842009-05-19 16:22:57 +0000650- Issue #6062: In distutils, fixed the package option of build_ext. Feedback
651 and tests on pywin32 by Tim Golden.
652
Tarek Ziadé93fb3aa2009-05-18 12:29:06 +0000653- Issue #6053: Fixed distutils tests on win32. patch by Hirokazu Yamamoto.
654
Tarek Ziadéd18a84e2009-05-18 08:07:46 +0000655- Issue #6046: Fixed the library extension when distutils build_ext is used
656 inplace. Initial patch by Roumen Petrov.
657
Tarek Ziadé5af55c62009-05-16 16:52:13 +0000658- Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
659 subcommand.
660
Tarek Ziadé4210c6e2009-05-14 20:20:47 +0000661- Issue #6022: a test file was created in the current working directory by
662 test_get_outputs in Distutils.
663
Tarek Ziadéff0e5002009-05-12 17:14:01 +0000664- Issue #5977: distutils build_ext.get_outputs was not taking into account the
665 inplace option. Initial patch by kxroberto.
666
Tarek Ziadé06fbee12009-05-10 10:34:01 +0000667- Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
668 for old-style extensions.
669
Tarek Ziadébe5b1b92009-05-09 10:09:11 +0000670- Issue #5976: Fixed Distutils test_check_environ.
671
Tarek Ziadé5662d3e2009-05-07 21:24:43 +0000672- Issue #5941: Distutils build_clib command was not working anymore because
673 of an incomplete costumization of the archiver command. Added ARFLAGS in the
674 Makefile besides AR and make Distutils use it. Original patch by David
675 Cournapeau.
676
R. David Murrayb507d2e2009-04-29 15:34:32 +0000677- Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
678
Tarek Ziadé81623822009-04-29 08:07:44 +0000679- Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
680 anymore.
681
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000682- Issue #5810: Fixed Distutils test_build_scripts so it uses
Tarek Ziadé939f9c82009-04-25 12:53:56 +0000683 sysconfig.get_config_vars.
684
Tarek Ziadé23336082009-04-25 12:39:56 +0000685- Issue #4951: Fixed failure in test_httpservers.
686
Thomas Hellerd3cfe992009-04-24 20:10:24 +0000687- Issue #5795: Fixed test_distutils failure on Debian ppc.
688
Tarek Ziadé822e1d42009-04-13 12:37:57 +0000689- Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
690
Georg Brandl1f9fa312009-04-27 16:42:58 +0000691- Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
692 a value in SafeConfigParser.
693
Tarek Ziadéf396ecf2009-04-11 15:00:43 +0000694- Issue #5732: added a new command in Distutils: check.
695
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000696- Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
Tarek Ziadéa6191802009-04-09 22:02:39 +0000697 platforms. Initial patch by Paul Moore.
698
Tarek Ziadéf6370502009-04-05 22:57:21 +0000699- Issue #5095: Added bdist_msi to the list of bdist supported formats.
700 Initial fix by Steven Bethard.
701
Tarek Ziadé889b0aa2009-04-05 21:49:36 +0000702- Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
703 Initial fix by Wayne Davison.
704
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000705- Issue #5694: removed spurious test output in Distutils (test_clean).
Tarek Ziadéea261632009-04-05 18:33:34 +0000706
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000707- Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
Georg Brandl236f7972009-04-05 14:28:42 +0000708
Brett Cannonf47e84c2009-04-01 16:06:01 +0000709- Issue #1665206 (partially): Move imports in cgitb to the top of the module
710 instead of performing them in functions. Helps prevent import deadlocking in
711 threads.
712
R. David Murraye59482e2009-04-01 03:42:00 +0000713- Issue #2522: locale.format now checks its first argument to ensure it has
714 been passed only one pattern, avoiding mysterious errors where it appeared
715 that it was failing to do localization.
716
Tarek Ziadéb2e36f12009-03-31 22:37:55 +0000717- Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
718 Brandl.
719
Antoine Pitrou350370c2009-03-14 00:13:13 +0000720- Issue #1222: locale.format() bug when the thousands separator is a space
721 character.
722
Tarek Ziadé516db942009-03-11 12:52:00 +0000723- Issue #5472: Fixed distutils.test_util tear down. Original patch by
724 Tim Golden.
725
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000726- collections.deque() objects now have a read-only attribute called maxlen.
727
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000728- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
729 it is has been populated and properly configured in order to prevent
730 window flashing.
731
Guilherme Polo56f5be52009-03-07 01:54:57 +0000732- Issue #4792: Prevent a segfault in _tkinter by using the
733 guaranteed to be safe interp argument given to the PythonCmd in place of
734 the Tcl interpreter taken from a PythonCmd_ClientData.
735
736- Issue #5193: Guarantee that tkinter.Text.search returns a string.
737
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000738- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
739 Original patch by Akira Kitada.
740
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000741- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
742
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000743- Issue #5385: Fixed mmap crash after resize failure on windows.
744
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000745- Issue #5179: Fixed subprocess handle leak on failure on windows.
746
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000747- PEP 372: Added collections.OrderedDict().
748
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000749- The _asdict() for method for namedtuples now returns an OrderedDict().
750
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000751- configparser now defaults to using an ordered dictionary.
752
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000753- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
754 import guess_extension`` was used.
755
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000756- Issue #1733986: Fixed mmap crash in accessing elements of second map object
757 with same tagname but larger size than first map. (Windows)
758
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000759- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
760 overrun.
761
Tarek Ziadéf0721222009-02-28 10:16:43 +0000762- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
763 bdist_rpm command.
764
765- Issue #5378: added --quiet option to Distutils bdist_rpm command.
766
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000767- Issue #5052: make Distutils compatible with 2.3 again.
768
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000769- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
770 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000771
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000772- Issue #5287: Add exception handling around findCaller() call to help out
773 IronPython.
774
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000775- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
776 The file was resized to wrong size.
777
778- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
779
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000780- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000781 from the package_data and the data_files metadata.
782
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000783- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000784 support.TempdirManager, to avoid writing in the tests directory.
785
Tarek Ziadé68c50952009-02-13 23:04:17 +0000786- Issue #4524: distutils build_script command failed with --with-suffix=3.
787 Initial patch by Amaury Forgeot d'Arc.
788
Tarek Ziadé811d6242009-02-13 22:26:15 +0000789- Issue #2461: added tests for distutils.util
790
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000791- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
792 which inherited from numbers.py which did not have __slots__ defined. The
793 numbers hierarchy now has its own __slots__ declarations.
794
Antoine Pitroub353c122009-02-11 00:39:14 +0000795- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
796 encoding.
797
Thomas Heller465c8022009-02-10 18:59:04 +0000798- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
799 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
800
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000801- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
802 under NT and OS2. Patch by Philip Jenvey.
803
Brett Cannonbefb14f2009-02-10 02:10:16 +0000804- Issue #5128: Make compileall properly inspect bytecode to determine if needs
805 to be recreated. This avoids a timing hole thanks to the old reliance on the
806 ctime of the files involved.
807
Guilherme Polob681df42009-02-09 22:33:59 +0000808- Issue #5122: Synchronize tk load failure check to prevent a potential
809 deadlock.
810
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000811- Issue #1818: collections.namedtuple() now supports a keyword argument
812 'rename' which lets invalid fieldnames be automatically converted to
813 positional names in the form, _1, _2, ...
814
Guilherme Poloae098992009-02-09 16:44:24 +0000815- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
816
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000817- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
818 public documented method ``ZipImporter.get_filename()``.
819
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000820- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
821 the execution of packages by looking for and executing a ``__main__``
822 submodule when a package name is supplied. Initial patch by Andi
823 Vajda.
824
Guilherme Polo491aee22009-02-06 23:16:11 +0000825- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
826 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
827 Tkapp_Call when calling from a thread different than the one that created
828 the Tcl interpreter. Patch by Robert Hancock.
829
Eric Smith0e5b5622009-02-06 01:32:42 +0000830- Issue #4285: Change sys.version_info to be a named tuple. Patch by
831 Ross Light.
832
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000833- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000834 environment/Makefile. Patch by Douglas Greiman.
835
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000836- Issue #1276768: The verbose option was not used in the code of
837 distutils.file_util and distutils.dir_util.
838
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000839- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000840 --enabled-shared activated. Initial patch by Dave Peterson.
841
Guilherme Polo7f423952009-02-02 21:17:09 +0000842- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
843
Raymond Hettinger85602262009-02-03 04:19:10 +0000844- The shelve module now defaults to pickle protocol 3.
845
Brett Cannone61426e2009-01-30 01:31:34 +0000846- Fix a bug in the trace module where a bytes object from co_lnotab had its
847 items being passed through ord().
848
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000849- Issue #2047: shutil.move() could believe that its destination path was
850 inside its source path if it began with the same letters (e.g. "src" vs.
851 "src.new").
852
Guilherme Polo5f238482009-01-28 14:41:10 +0000853- Added the ttk module. See issue #2983: Ttk support for Tkinter.
854
Raymond Hettinger89e12962009-01-26 02:09:03 +0000855- Removed isSequenceType(), isMappingType, and isNumberType() from the
856 operator module; use the abstract base classes instead. Also removed
857 the repeat() function; use mul() instead.
858
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000859- Issue #5021: doctest.testfile() did not create __name__ and
Raymond Hettinger0f055172009-01-27 10:06:09 +0000860 collections.namedtuple() relied on __name__ being defined.
861
862- Backport importlib from Python 3.1. Only the import_module() function has
863 been backported to help facilitate transitions from 2.7 to 3.1.
864
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000865- Issue #1885: distutils. When running sdist with --formats=tar,gztar
866 the tar file was overriden by the gztar one.
867
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000868- Issue #4863: distutils.mwerkscompiler has been removed.
869
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000870- Added a new itertools functions: combinations_with_replacement()
871 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000872
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000873- Issue #5032: added a step argument to itertools.count() and
Raymond Hettinger30729212009-02-12 06:28:27 +0000874 allowed non-integer arguments.
875
Jesse Noller41faa542009-01-25 03:45:53 +0000876- Fix and properly document the multiprocessing module's logging
877 support, expose the internal levels and provide proper usage
878 examples.
879
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000880- Issue #1672332: fix unpickling of subnormal floats, which was
881 producing a ValueError on some platforms.
882
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000883- Issue #3881: Help Tcl to load even when started through the
884 unreadable local symlink to "Program Files" on Vista.
885
Martin v. Löwis59e47792009-01-24 14:10:07 +0000886- Issue #4710: Extract directories properly in the zipfile module;
887 allow adding directories to a zipfile.
888
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000889- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000890 --without-threads argument. When this occurs, _multiprocessing will
891 be disabled, and not compiled.
892
Antoine Pitrou08838b62009-01-21 00:55:13 +0000893- Issue #5008: When a file is opened in append mode with the new IO library,
894 do an explicit seek to the end of file (so that e.g. tell() returns the
895 file size rather than 0). This is consistent with the behaviour of the
896 traditional 2.x file object.
897
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000898- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
899 parameter was set.
900
Mark Dickinson8dd05142009-01-20 20:43:58 +0000901- Issue #4842: Always append a trailing 'L' when pickling longs using
902 pickle protocol 0. When reading, the 'L' is optional.
903
Brett Cannonafccd632009-01-20 02:21:27 +0000904- Add the importlib package.
905
Jesse Noller9a0fc972009-01-18 21:12:58 +0000906- Issue #4301: Patch the logging module to add processName support, remove
907 _check_logger_class from multiprocessing.
908
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000909- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000910 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000911
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000912- Issue #4959: inspect.formatargspec now works for keyword only arguments
913 without defaults.
914
Jesse Noller6214edd2009-01-19 16:23:53 +0000915- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
916 for *nix machines for negative handles and large int handles. Without this check
917 it is possible to segfault the interpreter.
918
Jesse Nollerb0516a62009-01-18 03:11:38 +0000919- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
920 in sharedctypes.py.
921
922- Issue #1225107: inspect.isclass() returned True for instances with a custom
923 __getattr__.
924
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000925- Issue #3826 and #4791: The socket module now closes the underlying socket
926 appropriately when it is being used via socket.makefile() objects
927 rather than delaying the close by waiting for garbage collection to do it.
928
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000929- Issue #1696199: Add collections.Counter() for rapid and convenient
930 counting.
931
Antoine Pitrou308705e2009-01-10 16:22:51 +0000932- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
933
Thomas Heller5e4e4272009-01-08 09:34:20 +0000934- Issue #4867: Fixed a crash in ctypes when passing a string to a
935 function without defining argtypes.
936
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000937- Issue #4272: Add an optional argument to the GzipFile constructor to override
938 the timestamp in the gzip stream. The default value remains the current time.
939 The information can be used by e.g. gunzip when decompressing. Patch by
940 Jacques Frechet.
941
Mark Dickinson315a20a2009-01-04 21:34:18 +0000942- Restore Python 2.3 compatibility for decimal.py.
943
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000944- Issue #3638: Remove functions from _tkinter module level that depend on
945 TkappObject to work with multiple threads.
946
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000947- Issue #4718: Adapt the wsgiref package so that it actually works with
948 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000949 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
950
Raymond Hettinger771ed762009-01-03 19:20:32 +0000951- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
952 to the decimal module.
953
Georg Brandl3a9b0622009-01-03 22:07:57 +0000954- Fractions.from_float() no longer loses precision for integers too big to
955 cast as floats.
956
Mark Dickinsonf9236412009-01-02 23:23:21 +0000957- Issue #4812: add missing underscore prefix to some internal-use-only
958 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
959
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000960- Issue #4790: The nsmallest() and nlargest() functions in the heapq module
Georg Brandl3a9b0622009-01-03 22:07:57 +0000961 did unnecessary work in the common case where no key function was specified.
962
Georg Brandlb1441c72009-01-03 22:33:39 +0000963- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
964 the function is not a generator.
965
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000966- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
967 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000968
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000969- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000970 function. Original patch by Thomas Heller.
971
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000972- Issue #3767: Convert Tk object to string in tkColorChooser.
973
Martin v. Löwise354d782008-12-29 16:03:04 +0000974- Issue #3248: Allow placing ScrolledText in a PanedWindow.
975
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000976- Issue #4444: Allow assertRaises() to be used as a context handler, so that
977 the code under test can be written inline if more practical.
978
Georg Brandldb7b6b92009-01-01 15:53:14 +0000979- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
980 works as expected in the interactive environment.
981
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000982- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
983 Gabriel Genellina.
984
Antoine Pitrou180a3362008-12-14 16:36:46 +0000985- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
986 boundary.
987
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000988- Issue #4223: inspect.getsource() will now correctly display source code
989 for packages loaded via zipimport (or any other conformant PEP 302
990 loader). Original patch by Alexander Belopolsky.
991
992- Issue #4201: pdb can now access and display source code loaded via
993 zipimport (or any other conformant PEP 302 loader). Original patch by
994 Alexander Belopolsky.
995
996- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
997 302 conformant loader) will now work correctly in most cases (they
998 are still subject to the constraints that exist for all code running
999 from inside a module loaded via a PEP 302 loader and attempting to
1000 perform IO operations based on __file__). Original patch by
1001 Alexander Belopolsky.
1002
1003- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
1004 allows backporting to maintenance branches. Original patch by
1005 Alexander Belopolsky.
1006
Antoine Pitrou7c59bc62008-12-13 23:20:54 +00001007- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
1008 a non-ASCII letter.
1009
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +00001010- Issue #4616: TarFile.utime(): Restore directory times on Windows.
1011
Benjamin Peterson433f32c2008-12-12 01:25:05 +00001012- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
1013 codec cannot be found. This is for compatibility with the builtin behavior.
1014
Facundo Batista708d5812008-12-11 04:20:07 +00001015- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
1016 give correct results in the case where one argument is a quiet NaN
1017 and the other is a finite number that requires rounding.
1018
Skip Montanaroc1ce2862008-12-06 17:25:02 +00001019- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
1020 libs.
1021
Georg Brandlf9734072008-12-07 15:30:06 +00001022- Added the subprocess.check_call_output() convenience function to get output
1023 from a subprocess on success or raise an exception on error.
1024
1025- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1026 support unusual filenames (such as those containing semi-colons) in
1027 Content-Disposition headers.
1028
1029- Issue #4384: Added logging integration with warnings module using
1030 captureWarnings(). This change includes a NullHandler which does nothing;
1031 it will be of use to library developers who want to avoid the "No handlers
1032 could be found for logger XXX" message which can appear if the library user
1033 doesn't configure logging.
1034
1035- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
1036 exception.
1037
Georg Brandleee31162008-12-07 15:15:22 +00001038- Issue #4529: fix the parser module's validation of try-except-finally
1039 statements.
1040
1041- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
1042 not a malformed option.
1043
1044- Added the subprocess.check_output() convenience function to get output
1045 from a subprocess on success or raise an exception on error.
1046
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +00001047- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
1048 the corresponding tests now pass.
1049
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +00001050- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
1051 it was calling the wrong open() function.
1052
Fred Drake9a0a65b2008-12-04 19:24:50 +00001053- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1054 support unusual filenames (such as those containing semi-colons) in
1055 Content-Disposition headers.
1056
Matthias Klose2c7e3ee2009-01-10 17:08:25 +00001057- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
1058 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
1059
Benjamin Peterson5c6d7872009-02-06 02:40:07 +00001060- Issue #5104: The socket module now raises OverflowError when 16-bit port and
1061 protocol numbers are supplied outside the allowed 0-65536 range on bind()
1062 and getservbyport().
1063
Jeroen Ruigrok van der Werven0a866942009-05-08 14:18:00 +00001064- Windows locale mapping updated to Vista.
1065
Antoine Pitrou2a013ea2008-12-27 20:39:28 +00001066Tools/Demos
1067-----------
1068
Antoine Pitrou8a681222009-02-07 17:13:31 +00001069- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
1070 and make it 2.6-compatible.
1071
Guilherme Poloa7d27972009-01-28 16:06:51 +00001072- Ttk demos added in Demo/tkinter/ttk/
1073
Antoine Pitrou2a013ea2008-12-27 20:39:28 +00001074- Issue #4677: add two list comprehension tests to pybench.
1075
Georg Brandlb1441c72009-01-03 22:33:39 +00001076
1077Build
1078-----
1079
Martin v. Löwis8482ef92009-05-05 16:14:30 +00001080- Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
1081
Antoine Pitrou8966c992009-05-01 21:18:27 +00001082- Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
1083 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
1084
Matthias Klose55708cc2009-04-30 08:06:49 +00001085- Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
1086 the order that backends for the dbm extension are checked.
1087
Matthias Klose906785c2009-02-22 23:18:38 +00001088- Link the shared python library with $(MODLIBS).
1089
Martin v. Löwis11f72102009-02-10 13:13:30 +00001090- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
1091
Martin v. Löwisbc186a82009-02-02 15:32:22 +00001092- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
1093
Martin v. Löwise97637d2009-01-11 09:45:11 +00001094- Issue #4895: Use _strdup on Windows CE.
1095
Georg Brandlb1441c72009-01-03 22:33:39 +00001096- Issue #4472: "configure --enable-shared" now works on OSX
1097
1098- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
1099
1100- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
1101
1102- Issue #4289: Remove Cancel button from AdvancedDlg.
1103
1104- Issue #1656675: Register a drop handler for .py* files on Windows.
1105
1106- Issue #4120: Exclude manifest from extension modules in VS2008.
1107
1108- Issue #4091: Install pythonxy.dll in system32 again.
1109
1110- Issue #4018: Disable "for me" installations on Vista.
1111
1112- Issue #3758: Add ``patchcheck`` build target to .PHONY.
1113
1114- Issue #4204: Fixed module build errors on FreeBSD 4.
1115
1116
1117C-API
1118-----
1119
Mark Dickinson21776072009-02-10 16:13:25 +00001120- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
1121 for negative arguments. Previously, it raised TypeError.
1122
Georg Brandlb1441c72009-01-03 22:33:39 +00001123- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
1124
1125- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
1126 the GIL is released, or owned by another thread.
1127
1128- Issue #4122: On Windows, fix a compilation error when using the
1129 Py_UNICODE_ISSPACE macro in an extension module.
1130
1131
Mark Dickinsone675f082008-12-11 21:56:00 +00001132Extension Modules
1133-----------------
1134
Gregory P. Smith365a1862009-02-12 07:35:29 +00001135- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
1136 supporting objects as input no matter how it was compiled (built in
1137 implementations or external openssl library).
1138
Mark Dickinson29500f62009-01-15 15:36:10 +00001139- Issue #4397: Fix occasional test_socket failure on OS X.
1140
Martin v. Löwisa9b54c72009-01-11 09:30:50 +00001141- Issue #4279: Fix build of parsermodule under Cygwin.
1142
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +00001143- Issue #4751: hashlib now releases the GIL when hashing large buffers
1144 (with a hardwired threshold of 2048 bytes), allowing better parallelization
1145 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
1146
Martin v. Löwis5c88d812009-01-02 20:47:48 +00001147- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
1148
Antoine Pitrou31f30b12009-01-02 17:34:35 +00001149- Issue #4738: Each zlib object now has a separate lock, allowing to compress
1150 or decompress several streams at once on multi-CPU systems. Also, the GIL
1151 is now released when computing the CRC of a large buffer. Patch by ebfe.
1152
Georg Brandlb1441c72009-01-03 22:33:39 +00001153- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
1154
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +00001155- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
1156
Mark Dickinsone675f082008-12-11 21:56:00 +00001157- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
1158 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +00001159
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +00001160- Issue #4583: array.array would not always prohibit resizing when a buffer
1161 has been exported, resulting in an interpreter crash when accessing the
1162 buffer.
1163
Martin v. Löwis841edad2008-11-30 10:36:49 +00001164
Jack Diederiche0cbd692009-04-01 04:27:09 +00001165- Issue #5228: Make functools.partial objects can now be pickled.
1166
Guilherme Polo9de29af2009-01-28 20:40:48 +00001167Tests
1168-----
1169
R. David Murraya21e4ca2009-03-31 23:16:50 +00001170- regrtest no longer treats ImportError as equivalent to SkipTest. Imports
Vinay Sajipad5fa2f2009-04-27 13:55:05 +00001171 that should cause a test to be skipped are now done using import_module
R. David Murraya21e4ca2009-03-31 23:16:50 +00001172 from test support, which does the conversion.
1173
Guilherme Polo9de29af2009-01-28 20:40:48 +00001174- Issue #5083: New 'gui' resource for regrtest.
1175
1176
Brett Cannon7317c1e2008-11-25 19:19:17 +00001177Docs
1178----
1179
Georg Brandl52b92cc2008-05-25 09:43:03 +00001180
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001181**(For information about older versions, consult the HISTORY file.)**