blob: 87e471e7b6970d410084783432c1b3a3421147fd [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
Hirokazu Yamamoto8223c242009-05-17 04:21:53 +000015- Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
16
R. David Murraydd226ea2009-05-13 12:27:21 +000017- Issue #5994: the marshal module now has docstrings.
18
Mark Dickinsond1ec8b22009-05-11 15:45:15 +000019- Issue #5981: Fix three minor inf/nan issues in float.fromhex:
20 (1) inf and nan strings with trailing whitespace were incorrectly
21 rejected; (2) parsing of strings representing infinities and nans
22 was locale aware; and (3) the interpretation of fromhex('-nan')
23 didn't match that of float('-nan').
24
Benjamin Petersonaccdca52009-05-06 23:26:59 +000025Library
26-------
27
Antoine Pitrou6e610062009-05-15 17:04:50 +000028- Issue #2116: Weak references and weak dictionaries now support copy()ing and
29 deepcopy()ing.
30
Antoine Pitrouc1d09362009-05-15 12:15:51 +000031- Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
32
Antoine Pitrou37d1c182009-05-14 21:54:00 +000033- Issue #5918: Fix a crash in the parser module.
34
Antoine Pitrou2ca24f02009-05-14 21:30:46 +000035- Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
36
Antoine Pitroue4501852009-05-14 18:55:55 +000037- Issue #5006: Better handling of unicode byte-order marks (BOM) in the io
38 library. This means, for example, that opening an UTF-16 text file in
39 append mode doesn't add a BOM at the end of the file if the file isn't
40 empty.
41
R. David Murray74b89242009-05-13 17:33:03 +000042- Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
43 file is a binary. Patch by Brodie Rao, tests by Daniel Diniz. This fix
44 corrects a pydoc regression.
45
R. David Murray99352742009-05-07 18:24:38 +000046- Issue 5955: aifc's close method did not close the file it wrapped,
47 now it does. This also means getfp method now returns the real fp.
48
Benjamin Petersonaccdca52009-05-06 23:26:59 +000049
Brett Cannon1262e7c2009-05-11 01:47:11 +000050Tests
51-----
52
53- Issue 5442: Tests for importlib were not properly skipping case-sensitivity
54 tests on darwin even when the OS was installed on a case-sensitive
55 filesystem. Also fixed tests that should not be run when
56 sys.dont_write_bytecode is true.
57
58
Benjamin Petersonbd35b032009-04-04 23:16:41 +000059What's New in Python 3.1 beta 1?
60================================
61
Benjamin Peterson5c5f3de2009-05-06 20:43:28 +000062*Release date: 2009-05-06*
Benjamin Petersonbd35b032009-04-04 23:16:41 +000063
64Core and Builtins
65-----------------
66
Mark Dickinson865e01a2009-05-07 16:37:01 +000067- Issue #5914: Add new C API function PyOS_string_to_double, and
68 deprecate PyOS_ascii_strtod and PyOS_ascii_atof.
69
Eric Smith741191f2009-05-06 13:08:15 +000070- Issue #3382: float.__format__, complex.__format__, and %-formatting
71 no longer map 'F' to 'f'. Because of issue #5859 (below), this only
72 affects nan -> NAN and inf -> INF.
73
Mark Hammond5a607a32009-05-06 08:04:54 +000074- Issue #5799: ntpath (ie, os.path on Windows) fully supports UNC pathnames
75 in all operations, including splitdrive, split, etc. splitunc() now issues
76 a PendingDeprecation warning.
77
Eric Smith63376222009-05-05 14:04:18 +000078- Issue #5920: For float.__format__, change the behavior with the
79 empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
80 to be like 'g' but with at least one decimal point and with a
81 default precision of 12. Previously, the behavior the same but with
82 a default precision of 6. This more closely matches str(), and
83 reduces surprises when adding alignment flags to the empty
84 presentation type. This also affects the new complex.__format__ in
85 the same way.
86
Martin v. Löwis011e8422009-05-05 04:43:17 +000087- Implement PEP 383, Non-decodable Bytes in System Character Interfaces.
88
R. David Murrayb18500d2009-05-04 22:59:07 +000089- Issue #5890: in subclasses of 'property' the __doc__ attribute was
90 shadowed by classtype's, even if it was None. property now
91 inserts the __doc__ into the subclass instance __dict__.
92
Antoine Pitrou244651a2009-05-04 18:56:13 +000093- Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
94 sequences. Patch by Nick Barnes and Victor Stinner.
95
Martin v. Löwise0a2b722009-05-10 08:08:56 +000096- Issue #3672: Reject surrogates in utf-8 codec; add surrogatepass error handler.
Martin v. Löwisdb12d452009-05-02 18:52:14 +000097
Benjamin Petersond2e0c792009-05-01 20:40:59 +000098- Issue #5883: In the io module, the BufferedIOBase and TextIOBase ABCs have
99 received a new method, detach(). detach() disconnects the underlying stream
100 from the buffer or text IO and returns it.
101
Mark Dickinson33841c32009-05-01 15:37:04 +0000102- Issue #5859: Remove switch from '%f' to '%g'-style formatting for
103 floats with absolute value over 1e50. Also remove length
104 restrictions for float formatting: '%.67f' % 12.34 and '%.120e' %
105 12.34 no longer raise an exception.
Mark Dickinsonf489caf2009-05-01 11:42:00 +0000106
Eric Smith741191f2009-05-06 13:08:15 +0000107- Issue #1588: Add complex.__format__. For example,
Eric Smith58a42242009-04-30 01:00:33 +0000108 format(complex(1, 2./3), '.5') now produces a sensible result.
109
Mark Dickinsond3ca5572009-04-29 18:47:07 +0000110- Issue #5864: Fix empty format code formatting for floats so that it
111 never gives more than the requested number of significant digits.
112
Eric Smith6dc46f52009-04-27 20:39:49 +0000113- Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
114 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
115
Eric Smithcc32a112009-04-26 21:35:14 +0000116- Issue #5835: Deprecate PyOS_ascii_formatd.
117
Martin v. Löwis71efeb72009-04-26 01:02:07 +0000118- Issue #4971: Fix titlecase for characters that are their own
119 titlecase, but not their own uppercase.
120
Benjamin Peterson193152c2009-04-25 01:08:45 +0000121- Issue #5283: Setting __class__ in __del__ caused a segfault.
122
Mark Dickinsonad476da2009-04-23 19:14:16 +0000123- Issue #5816: complex(repr(z)) now recovers z exactly, even when
124 z involves nans, infs or negative zeros.
125
Mark Dickinson4a16e3a2009-04-23 19:15:48 +0000126- Issue #3166: Make int -> float conversions correctly rounded.
Mark Dickinsonc6300392009-04-20 21:38:00 +0000127
Mark Dickinsone6a076d2009-04-18 11:48:33 +0000128- Issue #1869 (and many duplicates): make round(x, n) correctly
129 rounded for a float x, by using the decimal <-> binary conversions
130 from Python/dtoa.c. As a consequence, (e.g.) round(x, 2) now
131 consistently agrees with format(x, '.2f').
132
Benjamin Petersonae937c02009-04-18 20:54:08 +0000133- Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
134 some builtin types.
135
Eric Smith0923d1d2009-04-16 20:16:10 +0000136- Issue #5772: format(1e100, '<') produces '1e+100', not '1.0e+100'.
137
Eric Smith35e84722009-04-16 20:21:28 +0000138- Issue #5515: str.format() type 'n' combined with commas and leading
139 zeros no longer gives odd results with ints and floats.
Eric Smith0923d1d2009-04-16 20:16:10 +0000140
141- Implement PEP 378, Format Specifier for Thousands Separator, for
142 floats.
143
Mark Dickinson3370cce2009-04-17 22:40:53 +0000144- The str function switches to exponential notation at
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000145 1e11, not 1e12. This avoids printing 13 significant digits in
146 situations where only 12 of them are correct. Example problem
147 value: str(1e11 + 0.5). (This minor issue has existed in 2.x for a
148 long time.)
149
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000150- Issue #1580: On most platforms, use a 'short' float repr: for a
151 finite float x, repr(x) now outputs a string based on the shortest
152 sequence of decimal digits that rounds to x. Previous behaviour was
153 to output 17 significant digits and then strip trailing zeros.
Mark Dickinson3370cce2009-04-17 22:40:53 +0000154 Another minor difference is that the new repr switches to
155 exponential notation at 1e16 instead of the previous 1e17; this
156 avoids misleading output in some cases.
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000157
158 There's a new sys attribute sys.float_repr_style, which takes
159 the value 'short' to indicate that we're using short float repr,
160 and 'legacy' if the short float repr isn't available for one
161 reason or another.
162
163 The float repr change involves incorporating David Gay's 'perfect
164 rounding' code into the Python core (it's in Python/dtoa.c). As a
165 secondary consequence, all string-to-float and float-to-string
166 conversions (including all float formatting operations) will be
167 correctly rounded on these platforms.
168
169 See issue 1580 discussions for details of platforms for which
170 this change does not apply.
171
Benjamin Peterson2808d3c2009-04-15 21:34:27 +0000172- Issue #5759: float() didn't call __float__ on str subclasses.
173
Georg Brandlabc38772009-04-12 15:51:51 +0000174- The string.maketrans() function is deprecated; there is a new static method
175 maketrans() on the bytes and bytearray classes. This removes confusion about
176 the types string.maketrans() is supposed to work with, and mirrors the
177 methods available on the str class.
178
R. David Murraydc6da8a2009-04-09 22:16:43 +0000179- Issue #2170: refactored xml.dom.minidom.normalize, increasing both
180 its clarity and its speed.
181
Matthias Klose091c7b12009-04-07 13:24:27 +0000182- Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
183 to avoid compiler warnings.
184
Walter Dörwald8dc33d52009-05-06 14:41:26 +0000185- Issue #3739: The unicode-internal encoder now reports the number of characters
186 consumed like any other encoder (instead of the number of bytes).
187
Benjamin Peterson0b4915e2009-04-25 21:11:45 +0000188Installation
189------------
190
191- Issue #5756: Install idle and pydoc with a 3 suffix.
192
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000193Library
194-------
195
Tarek Ziadédd9f65f2009-05-06 07:26:24 +0000196- Issue #5940: distutils.command.build_clib.check_library_list was not doing
197 the right type checkings anymore.
198
Thomas Heller00cfc372009-05-05 19:04:40 +0000199- Issue #4875: On win32, ctypes.util.find_library does no longer
200 return directories.
201
Georg Brandl243ad662009-05-05 09:00:19 +0000202- Issue #5142: Add the ability to skip modules while stepping to pdb.
203
Georg Brandl991f9202009-05-05 08:31:54 +0000204- Issue #1309567: Fix linecache behavior of stripping subdirectories when
205 looking for files given by a relative filename.
206
Georg Brandleaa84ef2009-05-05 08:14:33 +0000207- Issue #5923: Update the ``turtle`` module to version 1.1, add two new
208 turtle demos in Demo/turtle.
209
Antoine Pitrou3c33e082009-05-04 21:21:36 +0000210- Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
211 extracting a file to the root directory.
212
Hirokazu Yamamotobbb9be72009-05-04 05:56:46 +0000213- Issue #5913: os.listdir() should fail for empty path on windows.
214
Antoine Pitroua9f48a02009-05-02 21:41:14 +0000215- Issue #5084: unpickling now interns the attribute names of pickled objects,
216 saving memory and avoiding growth in size of subsequent pickles. Proposal
217 and original patch by Jake McGuire.
218
Benjamin Petersonc6b607d2009-05-02 12:36:44 +0000219- The json module now works exclusively with str and not bytes.
220
Gregory P. Smithe54dff52009-05-01 22:13:48 +0000221- Issue #3959: The ipaddr module has been added to the standard library.
222 Contributed by Google.
223
Antoine Pitrou7fff0962009-05-01 21:09:44 +0000224- Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
225 error when a named pipe is encountered, rather than blocking infinitely.
226
Raymond Hettinger1f0db402009-04-29 00:38:08 +0000227- Issue #5857: tokenize.tokenize() now returns named tuples.
228
Thomas Hellerc1edc2d2009-04-28 19:55:58 +0000229- Issue #4305: ctypes should now build again on mipsel-linux-gnu
230
Antoine Pitrou7a0fedf2009-04-27 22:31:40 +0000231- Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
232 string is already in normalized form, by performing a quick check beforehand.
233 Original patch by Rauli Ruohonen.
234
Antoine Pitrou57f3d932009-04-27 21:04:19 +0000235- Issue #5853: calling a function of the mimetypes module from several threads
236 at once could hit the recursion limit if the mimetypes database hadn't been
237 initialized before.
238
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000239- Issue #5854: Updated __all__ to include some missing names and remove some
240 names which should not be exported.
241
Thomas Heller34596a92009-04-24 20:50:00 +0000242- Issue #3102: All global symbols that the _ctypes extension defines
243 are now prefixed with 'Py' or '_ctypes'.
244
245- Issue #5041: ctypes does now allow pickling wide character.
246
Mark Dickinsond4d95f82009-04-24 14:06:19 +0000247- Issue #5812: For the two-argument form of the Fraction constructor,
248 Fraction(m, n), m and n are permitted to be arbitrary Rational
249 instances.
250
Mark Dickinsoncf63f2f2009-04-22 17:50:21 +0000251- Issue #5812: Fraction('1e6') is valid: more generally, any string
252 that's valid for float() is now valid for Fraction(), with the
253 exception of strings representing NaNs and infinities.
254
Antoine Pitroucf4c7492009-04-19 00:09:36 +0000255- Issue #5734: BufferedRWPair was poorly tested and had several glaring
256 bugs. Patch by Brian Quinlan.
257
R. David Murray9e94ddf2009-04-13 17:06:33 +0000258- Issue #1161031: fix readwrite select flag handling: POLLPRI now
259 results in a handle_expt_event call, not handle_read_event, and POLLERR
260 and POLLNVAL now call handle_close, not handle_expt_event. Also,
261 dispatcher now has an 'ignore_log_types' attribute for suppressing
262 log messages, which is set to 'warning' by default.
263
Matthias Klosea3d29e82009-04-07 13:13:10 +0000264- Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
265 new arguments introduced in 2.5.
266
Walter Dörwald1b08b302009-04-25 14:13:56 +0000267- Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
268 makeunicodedata.py and regenerated the Unicode database (This fixes
269 u'\u1d79'.lower() == '\x00').
270
Matthias Klose535336f2009-04-07 13:49:45 +0000271Extension Modules
272-----------------
273
Benjamin Petersone04b6272009-05-04 22:25:21 +0000274- Issue #5881: Remove old undocumented compatibility interfaces in hashlib and
275 pwd.
276
Mark Dickinsonea835e72009-04-19 20:40:33 +0000277- Issue #5463: In struct module, remove deprecated float coercion
278 for integer type codes: struct.pack('L', 0.3) should now raise
279 an error. The _PY_STRUCT_FLOAT_COERCE constant has been removed.
280 The version number has been bumped to 0.3.
281
Matthias Klose535336f2009-04-07 13:49:45 +0000282- Issue #5359: Readd the Berkley-DB detection code to allow _dbm be built
283 using Berkley-DB.
284
Nick Coghlan47384702009-04-22 16:13:36 +0000285Tests
286-----
287
288- Issue #5354: New test support function import_fresh_module() makes
289 it easy to import both normal and optimised versions of modules.
290 test_heapq and test_warnings have been adjusted to use it, tests for
291 other modules with both C and Python implementations in the stdlib
292 can be adjusted to use it over time.
293
Walter Dörwald4ba80132009-04-25 12:48:43 +0000294- Issue #5837: Certain sequences of calls to set() and unset() for
295 support.EnvironmentVarGuard objects restored the environment variables
296 incorrectly on __exit__.
297
Benjamin Petersonb173f782009-05-05 22:31:58 +0000298C-API
299-----
300
301- Issue #5630: A replacement PyCObject API, PyCapsule, has been added.
302
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000303
Benjamin Petersond1735892009-03-07 18:46:21 +0000304What's New in Python 3.1 alpha 2?
305=================================
306
Benjamin Peterson88f14352009-04-04 21:06:52 +0000307*Release date: 2009-4-4*
Benjamin Petersond1735892009-03-07 18:46:21 +0000308
309Core and Builtins
310-----------------
Benjamin Petersone099b372009-04-04 17:09:35 +0000311
Eric Smith1e1d7d22009-04-03 22:25:33 +0000312- Implement PEP 378, Format Specifier for Thousands Separator, for
313 integers.
Benjamin Petersond1735892009-03-07 18:46:21 +0000314
Benjamin Peterson8f76b492009-04-03 22:22:42 +0000315- Issue #5666: Py_BuildValue's 'c' code should create byte strings.
316
Benjamin Peterson7fe98532009-04-02 00:33:55 +0000317- Issue #5499: The 'c' code for argument parsing functions now only accepts a
318 byte, and the 'C' code only accepts a unicode character.
319
Georg Brandl406b3d82009-04-11 21:24:37 +0000320- Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
321 when hitting the recursion limit under certain circumstances.
322
Brett Cannon0759dd62009-04-01 18:13:07 +0000323- Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
324
Georg Brandlab6f2f62009-03-31 04:16:10 +0000325- Fix a segfault when running test_exceptions with coverage, caused by
326 insufficient checks in accessors of Exception.__context__.
327
Guido van Rossum0ad59d42009-03-30 22:01:35 +0000328- Issue #5604: non-ASCII characters in module name passed to
329 imp.find_module() were converted to UTF-8 while the path is
330 converted to the default filesystem encoding, causing nonsense.
331
Benjamin Peterson09832742009-03-26 17:15:46 +0000332- Issue #5126: str.isprintable() returned False for space characters.
333
Ronald Oussorenfa1fcd12009-03-30 23:16:10 +0000334- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
335 the end sys.path, for compatibility with the system install of Python.
336
Antoine Pitrou3a652b12009-03-23 18:52:06 +0000337- Issue #4688: Add a heuristic so that tuples and dicts containing only
338 untrackable objects are not tracked by the garbage collector. This can
339 reduce the size of collections and therefore the garbage collection overhead
340 on long-running programs, depending on their particular use of datatypes.
341
Mark Dickinson17e4fdd2009-03-23 18:44:57 +0000342- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
343 improve its performance. Long divisions and remainder operations
344 are now between 50% and 150% faster.
345
Mark Dickinsonbd792642009-03-18 20:06:12 +0000346- Issue #4258: Make it possible to use base 2**30 instead of base
347 2**15 for the internal representation of integers, for performance
348 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
349 --enable-big-digits option to configure, which overrides the
350 default. Add sys.int_info structseq to provide information about
351 the internal format.
352
Mark Dickinson081dfee2009-03-18 14:47:41 +0000353- Issue #4474: PyUnicode_FromWideChar now converts characters outside
354 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
355 and sizeof(Py_UNICODE) == 2.
356
Eric Smith8ec90442009-03-14 12:29:34 +0000357- Issue #5237: Allow auto-numbered fields in str.format(). For
358 example: '{} {}'.format(1, 2) == '1 2'.
359
Antoine Pitrou652e7072009-03-13 19:25:20 +0000360- Issue #5392: when a very low recursion limit was set, the interpreter would
361 abort with a fatal error after the recursion limit was hit twice.
362
Matthias Klose042f1332009-04-04 14:32:42 +0000363- Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
364 short file names.
365
Benjamin Petersond1735892009-03-07 18:46:21 +0000366Library
367-------
368
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000369- Issue #2625: added missing items() call to the for loop in
R. David Murray548ac412009-04-02 19:44:43 +0000370 mailbox.MH.get_message().
371
Hye-Shik Chang944820b2009-04-02 10:33:16 +0000372- Issue #5640: Fix _multibytecodec so that CJK codecs don't repeat
373 error substitutions from non-strict codec error callbacks in
374 incrementalencoder and StreamWriter.
375
Georg Brandl33c28812009-04-01 23:07:29 +0000376- Issue #5656: Fix the coverage reporting when running the test suite with
377 the -T argument.
378
Raymond Hettinger3f10a952009-04-01 19:05:50 +0000379- Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
380
Georg Brandl4ed72ac2009-04-01 04:28:33 +0000381- Issue #5624: Fix the _winreg module name still used in several modules.
382
Benjamin Petersona1b49012009-03-31 23:11:32 +0000383- Issue #5628: Fix io.TextIOWrapper.read() with a unreadable buffer.
384
Jesse Nollera9314042009-03-31 22:36:44 +0000385- Issue #5619: Multiprocessing children disobey the debug flag and causes
386 popups on windows buildbots. Patch applied to work around this issue.
387
Jesse Noller32d68c22009-03-31 18:48:42 +0000388- Issue #5400: Added patch for multiprocessing on netbsd compilation/support
389
Hirokazu Yamamoto16caab02009-03-31 13:44:06 +0000390- Issue #5387: Fixed mmap.move crash by integer overflow.
391
Jesse Nollerf8d00852009-03-31 03:25:07 +0000392- Issue #5261: Patch multiprocessing's semaphore.c to support context
393 manager use: "with multiprocessing.Lock()" works now.
394
Brett Cannon7f6b4f82009-03-30 21:30:26 +0000395- Issue #5236: Change time.strptime() to only take strings. Didn't work with
396 bytes already but the failure was non-obvious.
397
Jesse Noller7af4ef82009-03-30 16:47:15 +0000398- Issue #5177: Multiprocessing's SocketListener class now uses
399 socket.SO_REUSEADDR on all connections so that the user no longer needs
400 to wait 120 seconds for the socket to expire.
401
Benjamin Peterson48e24782009-03-29 13:02:52 +0000402- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
403
Antoine Pitrou66994e12009-03-29 00:45:26 +0000404- Issue #1174606: Calling read() without arguments of an unbounded file
405 (typically /dev/zero under Unix) could crash the interpreter.
406
Benjamin Peterson59406a92009-03-26 17:10:29 +0000407- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
408 io.BufferedRandom have been deprecated for removal in Python 3.2.
409
Lars Gustäbel42e00912009-03-22 20:34:29 +0000410- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
411 forever on incomplete input. That caused tarfile.open() to hang when used
412 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
413 partial bzip2 compressed data.
414
Mark Dickinson79f52032009-03-17 23:12:51 +0000415- Issue #2110: Add support for thousands separator and 'n' type
416 specifier to Decimal.__format__
417
Mark Dickinson9c59fe02009-03-17 18:15:08 +0000418- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
419 '>' alignment characters.
420
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +0000421- The error detection code in FileIO.close() could fail to reflect the `errno`
422 value, and report it as -1 instead.
423
Antoine Pitroua28fcfd2009-03-13 23:42:55 +0000424- Issue #5016: FileIO.seekable() could return False if the file position
425 was negative when truncated to a C int. Patch by Victor Stinner.
426
Mark Dickinsonae681df2009-03-21 10:26:31 +0000427Extension Modules
428-----------------
429
Benjamin Petersone099b372009-04-04 17:09:35 +0000430- Issue #5391: mmap now deals exclusively with bytes.
431
Mark Dickinsonae681df2009-03-21 10:26:31 +0000432- Issue #5463: In struct module, remove deprecated overflow wrapping
433 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +0000434 struct.error instead of returning b'\xff\xff\xff\xff'. The
435 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
436 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +0000437
Benjamin Petersond1735892009-03-07 18:46:21 +0000438
Benjamin Petersona58a6262009-03-07 16:34:40 +0000439What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +0000440================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000441
Benjamin Petersona58a6262009-03-07 16:34:40 +0000442*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000443
444Core and Builtins
445-----------------
446
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +0000447- The io module has been reimplemented in C for speed.
448
Raymond Hettingerb0d56af2009-03-03 10:52:49 +0000449- Give dict views an informative __repr__.
450
Eric Smith5e5c0db2009-02-20 14:25:03 +0000451- Issue #5247: Improve error message when unknown format codes are
452 used when using str.format() with str, int, and float arguments.
453
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000454- Issue #5249: time.strftime returned malformed string when format string
455 contained non ascii character on windows.
456
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000457- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
458 source has already been decoded into str.
459
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000460- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
461 rotating the object pointer by 4 bits to the right.
462
Mark Dickinson87ec0852009-02-09 17:15:59 +0000463- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
464 it now forces its argument to double before testing for infinity.
465
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000466- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
467 returns a non-number type.
468
Benjamin Peterson87618552009-02-08 15:00:52 +0000469- Issue #5182: Removed memoryview.__str__.
470
Mark Dickinsonc008a172009-02-01 13:59:22 +0000471- Issue #1717: Removed builtin cmp() function, dropped tp_compare
472 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000473 the type definition cmpfunc. The tp_compare slot has been renamed
474 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000475
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000476- Issue #1242657: the __len__() and __length_hint__() calls in several tools
Raymond Hettingere8364232009-02-02 22:55:09 +0000477 were suppressing all exceptions. These include list() and bytearray().
478
Mark Dickinson1124e712009-01-28 21:25:58 +0000479- Issue #4707: round(x, n) now returns an integer if x is an integer.
480 Previously it returned a float.
481
Antoine Pitroub52ec782009-01-25 16:34:23 +0000482- Issue #4753: By enabling a configure option named '--with-computed-gotos'
483 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
484 evaluation loop is compiled with a new dispatch mechanism which gives
485 speedups of up to 20%, depending on the system, on various benchmarks.
486
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000487- Issue #4874: Most builtin decoders now reject unicode input.
488
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000489- Issue #4842: Don't allow trailing 'L' when constructing an integer
490 from a string.
491
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000492- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
493
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000494- Issue #4838: When a module is deallocated, free the memory backing the
495 optional module state data.
496
Mark Dickinson8055afd2009-01-17 10:04:45 +0000497- Issue #4910: Rename nb_long slot to nb_reserved, and change its
498 type to (void *).
499
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000500- Issue #4935: The overflow checking code in the expandtabs() method common
501 to str, bytes and bytearray could be optimized away by the compiler, letting
502 the interpreter segfault instead of raising an error.
503
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000504- Issue #3720: Fix a crash when an iterator modifies its class and removes its
505 __next__ method.
506
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000507- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
508 function no longer attempt to call the __long__ slot to convert an object
509 to an integer. Only the __int__ and __trunc__ slots are examined.
510
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000511- Issue #4893: Use NT threading on CE.
512
Martin v. Löwisec59d042009-01-12 07:59:10 +0000513- Issue #4915: Port sysmodule to Windows CE.
514
Antoine Pitrouab868312009-01-10 15:40:25 +0000515- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
516 common cases are optimized thanks to a dedicated fast path and a moderate
517 amount of loop unrolling.
518
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000519- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
520 collecting the oldest generation) so that allocating lots of objects without
521 destroying them does not show quadratic performance. Based on a proposal by
522 Martin von Löwis at
523 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
524
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000525- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000526 having been closed (for instance, a read() call could return some
527 previously buffered data). Patch by Dmitry Vasiliev.
528
Antoine Pitrou05608432009-01-09 18:53:14 +0000529- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
530 flag to work properly. Furthermore, when specifying -u, the text stdout
531 and stderr streams have line-by-line buffering enabled (the default being
532 to buffer arbitrary chunks of data).
533
Raymond Hettinger35631532009-01-09 03:58:09 +0000534- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
535 instead of ints (reducing its size from 4 to 8 times thereby reducing
536 Python's overall memory).
537
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000538- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
539 an existing .py counterpart, override the co_filename attributes of all
540 code objects if the original filename is obsolete (which can happen if the
541 file has been renamed, moved, or if it is accessed through different paths).
542 Patch by Ziga Seilnacht and Jean-Paul Calderone.
543
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000544- Issue #4580: Fix slicing of memoryviews when the item size is greater than
545 one byte. Also fixes the meaning of len() so that it returns the number of
546 items, rather than the size in bytes.
547
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000548- Issue #4075: Use OutputDebugStringW in Py_FatalError.
549
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000550- Issue #4747: When the terminal does not use utf-8, executing a script with
551 non-ascii characters in its name could fail with a "SyntaxError: None" error.
552
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000553- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000554 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000555
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000556- Issue #3680: Reference cycles created through a dict, set or deque iterator
557 did not get collected.
558
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000559- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
560 where the tp_hash and tp_dict slots are both NULL.
561
Georg Brandlccc47b62008-12-28 11:44:14 +0000562- Issue #4759: None is now allowed as the first argument of
563 bytearray.translate(). It was always allowed for bytes.translate().
564
Skip Montanaro80072cb2008-12-23 03:51:14 +0000565- Added test case to ensure attempts to read from a file opened for writing
566 fail.
567
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000568- Issue #3106: Speedup some comparisons (str/str and int/int).
569
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000570- Issue #2183: Simplify and optimize bytecode for list, dict and set
571 comprehensions. Original patch for list comprehensions by Neal Norwitz.
572
Antoine Pitrou621601a2008-12-17 23:18:19 +0000573- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
574 print elapsed times, not only when some objects are uncollectable /
575 unreachable. Original patch by Neil Schemenauer.
576
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000577- Issue #3439: Add a bit_length method to int.
578
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000579- Issue #2173: When getting device encoding, check that return value of
580 nl_langinfo is not the empty string. This was causing silent build
581 failures on OS X.
582
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000583- Issue #4597: Fixed several opcodes that weren't always propagating
584 exceptions.
585
586- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000587 context manager returns a value that cannot be converted to a bool.
588
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000589- Issue #4445: Replace "sizeof(PyBytesObject)" with
590 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
591 bytes instances. On a typical machine this saves 3 bytes of memory
592 (on average) per allocation of a bytes instance.
593
Christian Heimesa872de52008-12-05 08:26:55 +0000594- Issue #4533: File read operation was dreadfully slow due to a slowly
595 growing read buffer. Fixed by using the same growth rate algorithm as
596 Python 2.x.
597
Antoine Pitrou5504e892008-12-06 21:27:53 +0000598- Issue #4509: Various issues surrounding resize of bytearray objects to
599 which there are buffer exports (e.g. memoryview instances).
600
Georg Brandlf9734072008-12-07 15:30:06 +0000601- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
602 method on file objects with closefd=False. The file descriptor is still
603 kept open but the file object behaves like a closed file. The ``FileIO``
604 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000605
Antoine Pitroubc420402008-12-07 20:14:49 +0000606- Issue #4569: Interpreter crash when mutating a memoryview with an item size
607 larger than 1.
608
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000609- Issue #4748: Lambda generators no longer return a value.
610
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000611- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
612
Walter Dörwaldc1651a02009-05-03 22:55:55 +0000613- Issue #5108: Handle %s like %S, %R and %A in PyUnicode_FromFormatV(): Call
614 PyUnicode_DecodeUTF8() once, remember the result and output it in a second
615 step. This avoids problems with counting UTF-8 bytes that ignores the effect
616 of using the replace error handler in PyUnicode_DecodeUTF8().
617
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000618Library
619-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000620
Tarek Ziadéd18a84e2009-05-18 08:07:46 +0000621- Issue #6046: Fixed the library extension when distutils build_ext is used
622 inplace. Initial patch by Roumen Petrov.
623
Tarek Ziadé5af55c62009-05-16 16:52:13 +0000624- Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
625 subcommand.
626
Tarek Ziadé4210c6e2009-05-14 20:20:47 +0000627- Issue #6022: a test file was created in the current working directory by
628 test_get_outputs in Distutils.
629
Tarek Ziadéff0e5002009-05-12 17:14:01 +0000630- Issue #5977: distutils build_ext.get_outputs was not taking into account the
631 inplace option. Initial patch by kxroberto.
632
Tarek Ziadé06fbee12009-05-10 10:34:01 +0000633- Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
634 for old-style extensions.
635
Tarek Ziadébe5b1b92009-05-09 10:09:11 +0000636- Issue #5976: Fixed Distutils test_check_environ.
637
Tarek Ziadé5662d3e2009-05-07 21:24:43 +0000638- Issue #5941: Distutils build_clib command was not working anymore because
639 of an incomplete costumization of the archiver command. Added ARFLAGS in the
640 Makefile besides AR and make Distutils use it. Original patch by David
641 Cournapeau.
642
R. David Murrayb507d2e2009-04-29 15:34:32 +0000643- Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
644
Tarek Ziadé81623822009-04-29 08:07:44 +0000645- Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
646 anymore.
647
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000648- Issue #5810: Fixed Distutils test_build_scripts so it uses
Tarek Ziadé939f9c82009-04-25 12:53:56 +0000649 sysconfig.get_config_vars.
650
Tarek Ziadé23336082009-04-25 12:39:56 +0000651- Issue #4951: Fixed failure in test_httpservers.
652
Thomas Hellerd3cfe992009-04-24 20:10:24 +0000653- Issue #5795: Fixed test_distutils failure on Debian ppc.
654
Tarek Ziadé822e1d42009-04-13 12:37:57 +0000655- Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
656
Georg Brandl1f9fa312009-04-27 16:42:58 +0000657- Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
658 a value in SafeConfigParser.
659
Tarek Ziadéf396ecf2009-04-11 15:00:43 +0000660- Issue #5732: added a new command in Distutils: check.
661
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000662- Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
Tarek Ziadéa6191802009-04-09 22:02:39 +0000663 platforms. Initial patch by Paul Moore.
664
Tarek Ziadéf6370502009-04-05 22:57:21 +0000665- Issue #5095: Added bdist_msi to the list of bdist supported formats.
666 Initial fix by Steven Bethard.
667
Tarek Ziadé889b0aa2009-04-05 21:49:36 +0000668- Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
669 Initial fix by Wayne Davison.
670
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000671- Issue #5694: removed spurious test output in Distutils (test_clean).
Tarek Ziadéea261632009-04-05 18:33:34 +0000672
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000673- Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
Georg Brandl236f7972009-04-05 14:28:42 +0000674
Brett Cannonf47e84c2009-04-01 16:06:01 +0000675- Issue #1665206 (partially): Move imports in cgitb to the top of the module
676 instead of performing them in functions. Helps prevent import deadlocking in
677 threads.
678
R. David Murraye59482e2009-04-01 03:42:00 +0000679- Issue #2522: locale.format now checks its first argument to ensure it has
680 been passed only one pattern, avoiding mysterious errors where it appeared
681 that it was failing to do localization.
682
Tarek Ziadéb2e36f12009-03-31 22:37:55 +0000683- Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
684 Brandl.
685
Antoine Pitrou350370c2009-03-14 00:13:13 +0000686- Issue #1222: locale.format() bug when the thousands separator is a space
687 character.
688
Tarek Ziadé516db942009-03-11 12:52:00 +0000689- Issue #5472: Fixed distutils.test_util tear down. Original patch by
690 Tim Golden.
691
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000692- collections.deque() objects now have a read-only attribute called maxlen.
693
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000694- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
695 it is has been populated and properly configured in order to prevent
696 window flashing.
697
Guilherme Polo56f5be52009-03-07 01:54:57 +0000698- Issue #4792: Prevent a segfault in _tkinter by using the
699 guaranteed to be safe interp argument given to the PythonCmd in place of
700 the Tcl interpreter taken from a PythonCmd_ClientData.
701
702- Issue #5193: Guarantee that tkinter.Text.search returns a string.
703
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000704- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
705 Original patch by Akira Kitada.
706
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000707- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
708
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000709- Issue #5385: Fixed mmap crash after resize failure on windows.
710
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000711- Issue #5179: Fixed subprocess handle leak on failure on windows.
712
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000713- PEP 372: Added collections.OrderedDict().
714
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000715- The _asdict() for method for namedtuples now returns an OrderedDict().
716
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000717- configparser now defaults to using an ordered dictionary.
718
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000719- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
720 import guess_extension`` was used.
721
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000722- Issue #1733986: Fixed mmap crash in accessing elements of second map object
723 with same tagname but larger size than first map. (Windows)
724
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000725- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
726 overrun.
727
Tarek Ziadéf0721222009-02-28 10:16:43 +0000728- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
729 bdist_rpm command.
730
731- Issue #5378: added --quiet option to Distutils bdist_rpm command.
732
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000733- Issue #5052: make Distutils compatible with 2.3 again.
734
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000735- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
736 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000737
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000738- Issue #5287: Add exception handling around findCaller() call to help out
739 IronPython.
740
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000741- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
742 The file was resized to wrong size.
743
744- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
745
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000746- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000747 from the package_data and the data_files metadata.
748
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000749- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000750 support.TempdirManager, to avoid writing in the tests directory.
751
Tarek Ziadé68c50952009-02-13 23:04:17 +0000752- Issue #4524: distutils build_script command failed with --with-suffix=3.
753 Initial patch by Amaury Forgeot d'Arc.
754
Tarek Ziadé811d6242009-02-13 22:26:15 +0000755- Issue #2461: added tests for distutils.util
756
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000757- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
758 which inherited from numbers.py which did not have __slots__ defined. The
759 numbers hierarchy now has its own __slots__ declarations.
760
Antoine Pitroub353c122009-02-11 00:39:14 +0000761- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
762 encoding.
763
Thomas Heller465c8022009-02-10 18:59:04 +0000764- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
765 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
766
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000767- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
768 under NT and OS2. Patch by Philip Jenvey.
769
Brett Cannonbefb14f2009-02-10 02:10:16 +0000770- Issue #5128: Make compileall properly inspect bytecode to determine if needs
771 to be recreated. This avoids a timing hole thanks to the old reliance on the
772 ctime of the files involved.
773
Guilherme Polob681df42009-02-09 22:33:59 +0000774- Issue #5122: Synchronize tk load failure check to prevent a potential
775 deadlock.
776
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000777- Issue #1818: collections.namedtuple() now supports a keyword argument
778 'rename' which lets invalid fieldnames be automatically converted to
779 positional names in the form, _1, _2, ...
780
Guilherme Poloae098992009-02-09 16:44:24 +0000781- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
782
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000783- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
784 public documented method ``ZipImporter.get_filename()``.
785
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000786- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
787 the execution of packages by looking for and executing a ``__main__``
788 submodule when a package name is supplied. Initial patch by Andi
789 Vajda.
790
Guilherme Polo491aee22009-02-06 23:16:11 +0000791- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
792 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
793 Tkapp_Call when calling from a thread different than the one that created
794 the Tcl interpreter. Patch by Robert Hancock.
795
Eric Smith0e5b5622009-02-06 01:32:42 +0000796- Issue #4285: Change sys.version_info to be a named tuple. Patch by
797 Ross Light.
798
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000799- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000800 environment/Makefile. Patch by Douglas Greiman.
801
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000802- Issue #1276768: The verbose option was not used in the code of
803 distutils.file_util and distutils.dir_util.
804
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000805- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000806 --enabled-shared activated. Initial patch by Dave Peterson.
807
Guilherme Polo7f423952009-02-02 21:17:09 +0000808- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
809
Raymond Hettinger85602262009-02-03 04:19:10 +0000810- The shelve module now defaults to pickle protocol 3.
811
Brett Cannone61426e2009-01-30 01:31:34 +0000812- Fix a bug in the trace module where a bytes object from co_lnotab had its
813 items being passed through ord().
814
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000815- Issue #2047: shutil.move() could believe that its destination path was
816 inside its source path if it began with the same letters (e.g. "src" vs.
817 "src.new").
818
Guilherme Polo5f238482009-01-28 14:41:10 +0000819- Added the ttk module. See issue #2983: Ttk support for Tkinter.
820
Raymond Hettinger89e12962009-01-26 02:09:03 +0000821- Removed isSequenceType(), isMappingType, and isNumberType() from the
822 operator module; use the abstract base classes instead. Also removed
823 the repeat() function; use mul() instead.
824
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000825- Issue #5021: doctest.testfile() did not create __name__ and
Raymond Hettinger0f055172009-01-27 10:06:09 +0000826 collections.namedtuple() relied on __name__ being defined.
827
828- Backport importlib from Python 3.1. Only the import_module() function has
829 been backported to help facilitate transitions from 2.7 to 3.1.
830
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000831- Issue #1885: distutils. When running sdist with --formats=tar,gztar
832 the tar file was overriden by the gztar one.
833
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000834- Issue #4863: distutils.mwerkscompiler has been removed.
835
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000836- Added a new itertools functions: combinations_with_replacement()
837 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000838
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000839- Issue #5032: added a step argument to itertools.count() and
Raymond Hettinger30729212009-02-12 06:28:27 +0000840 allowed non-integer arguments.
841
Jesse Noller41faa542009-01-25 03:45:53 +0000842- Fix and properly document the multiprocessing module's logging
843 support, expose the internal levels and provide proper usage
844 examples.
845
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000846- Issue #1672332: fix unpickling of subnormal floats, which was
847 producing a ValueError on some platforms.
848
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000849- Issue #3881: Help Tcl to load even when started through the
850 unreadable local symlink to "Program Files" on Vista.
851
Martin v. Löwis59e47792009-01-24 14:10:07 +0000852- Issue #4710: Extract directories properly in the zipfile module;
853 allow adding directories to a zipfile.
854
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000855- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000856 --without-threads argument. When this occurs, _multiprocessing will
857 be disabled, and not compiled.
858
Antoine Pitrou08838b62009-01-21 00:55:13 +0000859- Issue #5008: When a file is opened in append mode with the new IO library,
860 do an explicit seek to the end of file (so that e.g. tell() returns the
861 file size rather than 0). This is consistent with the behaviour of the
862 traditional 2.x file object.
863
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000864- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
865 parameter was set.
866
Mark Dickinson8dd05142009-01-20 20:43:58 +0000867- Issue #4842: Always append a trailing 'L' when pickling longs using
868 pickle protocol 0. When reading, the 'L' is optional.
869
Brett Cannonafccd632009-01-20 02:21:27 +0000870- Add the importlib package.
871
Jesse Noller9a0fc972009-01-18 21:12:58 +0000872- Issue #4301: Patch the logging module to add processName support, remove
873 _check_logger_class from multiprocessing.
874
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000875- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000876 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000877
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000878- Issue #4959: inspect.formatargspec now works for keyword only arguments
879 without defaults.
880
Jesse Noller6214edd2009-01-19 16:23:53 +0000881- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
882 for *nix machines for negative handles and large int handles. Without this check
883 it is possible to segfault the interpreter.
884
Jesse Nollerb0516a62009-01-18 03:11:38 +0000885- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
886 in sharedctypes.py.
887
888- Issue #1225107: inspect.isclass() returned True for instances with a custom
889 __getattr__.
890
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000891- Issue #3826 and #4791: The socket module now closes the underlying socket
892 appropriately when it is being used via socket.makefile() objects
893 rather than delaying the close by waiting for garbage collection to do it.
894
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000895- Issue #1696199: Add collections.Counter() for rapid and convenient
896 counting.
897
Antoine Pitrou308705e2009-01-10 16:22:51 +0000898- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
899
Thomas Heller5e4e4272009-01-08 09:34:20 +0000900- Issue #4867: Fixed a crash in ctypes when passing a string to a
901 function without defining argtypes.
902
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000903- Issue #4272: Add an optional argument to the GzipFile constructor to override
904 the timestamp in the gzip stream. The default value remains the current time.
905 The information can be used by e.g. gunzip when decompressing. Patch by
906 Jacques Frechet.
907
Mark Dickinson315a20a2009-01-04 21:34:18 +0000908- Restore Python 2.3 compatibility for decimal.py.
909
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000910- Issue #3638: Remove functions from _tkinter module level that depend on
911 TkappObject to work with multiple threads.
912
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000913- Issue #4718: Adapt the wsgiref package so that it actually works with
914 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000915 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
916
Raymond Hettinger771ed762009-01-03 19:20:32 +0000917- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
918 to the decimal module.
919
Georg Brandl3a9b0622009-01-03 22:07:57 +0000920- Fractions.from_float() no longer loses precision for integers too big to
921 cast as floats.
922
Mark Dickinsonf9236412009-01-02 23:23:21 +0000923- Issue #4812: add missing underscore prefix to some internal-use-only
924 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
925
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000926- Issue #4790: The nsmallest() and nlargest() functions in the heapq module
Georg Brandl3a9b0622009-01-03 22:07:57 +0000927 did unnecessary work in the common case where no key function was specified.
928
Georg Brandlb1441c72009-01-03 22:33:39 +0000929- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
930 the function is not a generator.
931
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000932- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
933 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000934
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000935- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000936 function. Original patch by Thomas Heller.
937
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000938- Issue #3767: Convert Tk object to string in tkColorChooser.
939
Martin v. Löwise354d782008-12-29 16:03:04 +0000940- Issue #3248: Allow placing ScrolledText in a PanedWindow.
941
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000942- Issue #4444: Allow assertRaises() to be used as a context handler, so that
943 the code under test can be written inline if more practical.
944
Georg Brandldb7b6b92009-01-01 15:53:14 +0000945- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
946 works as expected in the interactive environment.
947
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000948- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
949 Gabriel Genellina.
950
Antoine Pitrou180a3362008-12-14 16:36:46 +0000951- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
952 boundary.
953
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000954- Issue #4223: inspect.getsource() will now correctly display source code
955 for packages loaded via zipimport (or any other conformant PEP 302
956 loader). Original patch by Alexander Belopolsky.
957
958- Issue #4201: pdb can now access and display source code loaded via
959 zipimport (or any other conformant PEP 302 loader). Original patch by
960 Alexander Belopolsky.
961
962- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
963 302 conformant loader) will now work correctly in most cases (they
964 are still subject to the constraints that exist for all code running
965 from inside a module loaded via a PEP 302 loader and attempting to
966 perform IO operations based on __file__). Original patch by
967 Alexander Belopolsky.
968
969- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
970 allows backporting to maintenance branches. Original patch by
971 Alexander Belopolsky.
972
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000973- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
974 a non-ASCII letter.
975
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000976- Issue #4616: TarFile.utime(): Restore directory times on Windows.
977
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000978- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
979 codec cannot be found. This is for compatibility with the builtin behavior.
980
Facundo Batista708d5812008-12-11 04:20:07 +0000981- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
982 give correct results in the case where one argument is a quiet NaN
983 and the other is a finite number that requires rounding.
984
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000985- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
986 libs.
987
Georg Brandlf9734072008-12-07 15:30:06 +0000988- Added the subprocess.check_call_output() convenience function to get output
989 from a subprocess on success or raise an exception on error.
990
991- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
992 support unusual filenames (such as those containing semi-colons) in
993 Content-Disposition headers.
994
995- Issue #4384: Added logging integration with warnings module using
996 captureWarnings(). This change includes a NullHandler which does nothing;
997 it will be of use to library developers who want to avoid the "No handlers
998 could be found for logger XXX" message which can appear if the library user
999 doesn't configure logging.
1000
1001- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
1002 exception.
1003
Georg Brandleee31162008-12-07 15:15:22 +00001004- Issue #4529: fix the parser module's validation of try-except-finally
1005 statements.
1006
1007- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
1008 not a malformed option.
1009
1010- Added the subprocess.check_output() convenience function to get output
1011 from a subprocess on success or raise an exception on error.
1012
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +00001013- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
1014 the corresponding tests now pass.
1015
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +00001016- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
1017 it was calling the wrong open() function.
1018
Fred Drake9a0a65b2008-12-04 19:24:50 +00001019- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1020 support unusual filenames (such as those containing semi-colons) in
1021 Content-Disposition headers.
1022
Matthias Klose2c7e3ee2009-01-10 17:08:25 +00001023- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
1024 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
1025
Benjamin Peterson5c6d7872009-02-06 02:40:07 +00001026- Issue #5104: The socket module now raises OverflowError when 16-bit port and
1027 protocol numbers are supplied outside the allowed 0-65536 range on bind()
1028 and getservbyport().
1029
Jeroen Ruigrok van der Werven0a866942009-05-08 14:18:00 +00001030- Windows locale mapping updated to Vista.
1031
Antoine Pitrou2a013ea2008-12-27 20:39:28 +00001032Tools/Demos
1033-----------
1034
Antoine Pitrou8a681222009-02-07 17:13:31 +00001035- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
1036 and make it 2.6-compatible.
1037
Guilherme Poloa7d27972009-01-28 16:06:51 +00001038- Ttk demos added in Demo/tkinter/ttk/
1039
Antoine Pitrou2a013ea2008-12-27 20:39:28 +00001040- Issue #4677: add two list comprehension tests to pybench.
1041
Georg Brandlb1441c72009-01-03 22:33:39 +00001042
1043Build
1044-----
1045
Martin v. Löwis8482ef92009-05-05 16:14:30 +00001046- Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
1047
Antoine Pitrou8966c992009-05-01 21:18:27 +00001048- Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
1049 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
1050
Matthias Klose55708cc2009-04-30 08:06:49 +00001051- Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
1052 the order that backends for the dbm extension are checked.
1053
Matthias Klose906785c2009-02-22 23:18:38 +00001054- Link the shared python library with $(MODLIBS).
1055
Martin v. Löwis11f72102009-02-10 13:13:30 +00001056- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
1057
Martin v. Löwisbc186a82009-02-02 15:32:22 +00001058- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
1059
Martin v. Löwise97637d2009-01-11 09:45:11 +00001060- Issue #4895: Use _strdup on Windows CE.
1061
Georg Brandlb1441c72009-01-03 22:33:39 +00001062- Issue #4472: "configure --enable-shared" now works on OSX
1063
1064- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
1065
1066- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
1067
1068- Issue #4289: Remove Cancel button from AdvancedDlg.
1069
1070- Issue #1656675: Register a drop handler for .py* files on Windows.
1071
1072- Issue #4120: Exclude manifest from extension modules in VS2008.
1073
1074- Issue #4091: Install pythonxy.dll in system32 again.
1075
1076- Issue #4018: Disable "for me" installations on Vista.
1077
1078- Issue #3758: Add ``patchcheck`` build target to .PHONY.
1079
1080- Issue #4204: Fixed module build errors on FreeBSD 4.
1081
1082
1083C-API
1084-----
1085
Mark Dickinson21776072009-02-10 16:13:25 +00001086- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
1087 for negative arguments. Previously, it raised TypeError.
1088
Georg Brandlb1441c72009-01-03 22:33:39 +00001089- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
1090
1091- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
1092 the GIL is released, or owned by another thread.
1093
1094- Issue #4122: On Windows, fix a compilation error when using the
1095 Py_UNICODE_ISSPACE macro in an extension module.
1096
1097
Mark Dickinsone675f082008-12-11 21:56:00 +00001098Extension Modules
1099-----------------
1100
Gregory P. Smith365a1862009-02-12 07:35:29 +00001101- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
1102 supporting objects as input no matter how it was compiled (built in
1103 implementations or external openssl library).
1104
Mark Dickinson29500f62009-01-15 15:36:10 +00001105- Issue #4397: Fix occasional test_socket failure on OS X.
1106
Martin v. Löwisa9b54c72009-01-11 09:30:50 +00001107- Issue #4279: Fix build of parsermodule under Cygwin.
1108
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +00001109- Issue #4751: hashlib now releases the GIL when hashing large buffers
1110 (with a hardwired threshold of 2048 bytes), allowing better parallelization
1111 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
1112
Martin v. Löwis5c88d812009-01-02 20:47:48 +00001113- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
1114
Antoine Pitrou31f30b12009-01-02 17:34:35 +00001115- Issue #4738: Each zlib object now has a separate lock, allowing to compress
1116 or decompress several streams at once on multi-CPU systems. Also, the GIL
1117 is now released when computing the CRC of a large buffer. Patch by ebfe.
1118
Georg Brandlb1441c72009-01-03 22:33:39 +00001119- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
1120
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +00001121- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
1122
Mark Dickinsone675f082008-12-11 21:56:00 +00001123- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
1124 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +00001125
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +00001126- Issue #4583: array.array would not always prohibit resizing when a buffer
1127 has been exported, resulting in an interpreter crash when accessing the
1128 buffer.
1129
Martin v. Löwis841edad2008-11-30 10:36:49 +00001130
Jack Diederiche0cbd692009-04-01 04:27:09 +00001131- Issue #5228: Make functools.partial objects can now be pickled.
1132
Guilherme Polo9de29af2009-01-28 20:40:48 +00001133Tests
1134-----
1135
R. David Murraya21e4ca2009-03-31 23:16:50 +00001136- regrtest no longer treats ImportError as equivalent to SkipTest. Imports
Vinay Sajipad5fa2f2009-04-27 13:55:05 +00001137 that should cause a test to be skipped are now done using import_module
R. David Murraya21e4ca2009-03-31 23:16:50 +00001138 from test support, which does the conversion.
1139
Guilherme Polo9de29af2009-01-28 20:40:48 +00001140- Issue #5083: New 'gui' resource for regrtest.
1141
1142
Brett Cannon7317c1e2008-11-25 19:19:17 +00001143Docs
1144----
1145
Georg Brandl52b92cc2008-05-25 09:43:03 +00001146
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001147**(For information about older versions, consult the HISTORY file.)**