blob: 6c1a0f1cd5472dcc994e22ae9577fbfd88522627 [file] [log] [blame]
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001+++++++++++
2Python News
3+++++++++++
4
Anthony Baxterb0c66302004-11-04 05:23:17 +00005(editors: check NEWS.help for information about editing NEWS using ReST.)
6
Barry Warsawd8ccd1c2008-11-21 15:13:37 +00007What's New in Python 3.0 final
8==============================
9
10*Release date: XX-XXX-2008*
11
12Core and Builtins
13-----------------
14
Amaury Forgeot d'Arcb0c29162008-11-22 22:18:04 +000015- Issue #3996: On Windows, the PyOS_CheckStack function would cause the
16 interpreter to abort ("Fatal Python error: Could not reset the stack!")
17 instead of throwing a MemoryError.
18
19- Issue #4367: Python would segfault during compiling when the unicodedata
20 module couldn't be imported and \N escapes were present.
21
Matthias Klose7e1b8fa2008-11-26 17:22:04 +000022- Fix build failure of _cursesmodule.c building with -D_FORTIFY_SOURCE=2.
23
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000024Library
25-------
26
Christian Heimes94e07722008-11-28 11:05:17 +000027- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
28 exception.
29
Thomas Heller60e5f5e2008-11-26 18:40:58 +000030- Issue #4433: Fixed an access violation when garbage collecting
31 _ctypes.COMError instances.
32
Thomas Heller71fb5132008-11-26 08:45:36 +000033- Issue #4429: Fixed UnicodeDecodeError in ctypes.
34
Christian Heimes3e7e0692008-11-25 21:21:32 +000035- Issue #4373: Corrected a potential reference leak in the pickle module and
36 silenced a false positive ref leak in distutils.tests.test_build_ext.
Amaury Forgeot d'Arc5f952572008-11-25 21:11:54 +000037
Brett Cannon2b5d6eb2008-11-24 21:09:58 +000038- Issue #4382: dbm.dumb did not specify the expected file encoding for opened
39 files.
40
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +000041- Issue #4383: When IDLE cannot make the connection to its subprocess, it would
42 fail to properly display the error message.
43
Brett Cannon7317c1e2008-11-25 19:19:17 +000044Docs
45----
46
47- Issue #3799: Document that dbm.gnu and dbm.ndbm will accept string arguments
48 for keys and values which will be converted to bytes before committal.
49
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000050
51What's New in Python 3.0 release candidate 3?
52=============================================
Barry Warsawa7c37302008-11-07 03:46:33 +000053
Barry Warsaw43baef42008-11-21 01:18:21 +000054*Release date: 20-Nov-2008*
Barry Warsawa7c37302008-11-07 03:46:33 +000055
Benjamin Peterson6570d072008-11-07 03:51:42 +000056
Barry Warsawa7c37302008-11-07 03:46:33 +000057Core and Builtins
58-----------------
59
Benjamin Peterson4f39d222008-11-18 22:37:15 +000060- Issue #4349: sys.path included a non-existent platform directory because of a
61 faulty Makefile.
62
Martin v. Löwis276c3712008-11-17 16:22:11 +000063- Issue #3327: Don't overallocate in the modules_by_index list.
64
Raymond Hettinger7d99f092008-11-16 11:44:54 +000065- Issue #1721812: Binary set operations and copy() returned the input type
Brett Cannon58425d32008-11-21 00:17:53 +000066 instead of the appropriate base type. This was incorrect because set
Raymond Hettinger7d99f092008-11-16 11:44:54 +000067 subclasses would be created without their __init__() method being called.
68 The corrected behavior brings sets into line with lists and dicts.
69
Mark Dickinson4a1f5932008-11-12 23:23:36 +000070- Issue #4296: Fix PyObject_RichCompareBool so that "x in [x]" evaluates to
71 True, even when x doesn't compare equal to itself. This was a regression
72 from 2.6.
73
Amaury Forgeot d'Arc9a5499b2008-11-11 23:04:59 +000074- Issue #3705: Command-line arguments were not correctly decoded when the
75 terminal does not use UTF8.
76
Barry Warsawa7c37302008-11-07 03:46:33 +000077Library
78-------
79
Amaury Forgeot d'Arcb0c29162008-11-22 22:18:04 +000080- Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
81 the ctypes module is not present.
82
Benjamin Peterson44309e62008-11-22 00:41:45 +000083- FileIO's mode attribute now always includes ``"b"``.
84
Brett Cannon58425d32008-11-21 00:17:53 +000085- Issue #3799: Fix dbm.dumb to accept strings as well as bytes for keys. String
86 keys are now written out in UTF-8.
87
Amaury Forgeot d'Arc836b6702008-11-20 23:53:46 +000088- Issue #4338: Fix distutils upload command.
89
Martin v. Löwis2d1ca2d2008-11-20 16:21:55 +000090- Issue #4354: Fix distutils register command.
91
Martin v. Löwis22d297b2008-11-19 09:14:30 +000092- Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
93
Benjamin Peterson3d4ca742008-11-12 21:39:01 +000094- Issue #4307: The named tuple that ``inspect.getfullargspec()`` returns now
95 uses ``kwonlydefaults`` instead of ``kwdefaults``.
96
Amaury Forgeot d'Arc3e4e72f2008-11-11 20:05:06 +000097- Issue #4298: Fix a segfault when pickle.loads is passed a ill-formed input.
98
99- Issue #4283: Fix a left-over "iteritems" call in distutils.
Georg Brandlda066062008-11-08 15:15:57 +0000100
Martin v. Löwisbfda5442008-11-07 18:54:51 +0000101Build
102-----
103
Martin v. Löwisa632a752008-11-19 13:55:07 +0000104- Issue #4289: Remove Cancel button from AdvancedDlg.
105
Martin v. Löwisbfda5442008-11-07 18:54:51 +0000106- Issue #1656675: Register a drop handler for .py* files on Windows.
107
Benjamin Peterson06fd5f82008-11-08 17:24:34 +0000108Tools/Demos
109-----------
110
111- Demos of the socketserver module now work with Python 3.
112
Barry Warsawa7c37302008-11-07 03:46:33 +0000113
Barry Warsaw1f0e67e2008-11-06 03:29:32 +0000114What's New in Python 3.0 release candidate 2
115============================================
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000116
Barry Warsaw1f0e67e2008-11-06 03:29:32 +0000117*Release date: 05-Nov-2008*
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000118
119Core and Builtins
120-----------------
121
Benjamin Petersond968e272008-11-05 22:48:33 +0000122- Issue #4211: The __path__ attribute of frozen packages is now a list instead
123 of a string as required by PEP 302.
124
Benjamin Peterson93ef79c2008-11-05 22:49:09 +0000125- Issue #3727: Fixed poplib.
Christian Heimesd3956292008-11-05 19:48:27 +0000126
Christian Heimes933238a2008-11-05 19:44:21 +0000127- Issue #3714: Fixed nntplib by using bytes where appropriate.
128
Christian Heimesfb5faf02008-11-05 19:39:50 +0000129- Issue #1210: Fixed imaplib and its documentation.
130
Christian Heimesecc42a22008-11-05 19:30:32 +0000131- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
132 method on file objects with closefd=False. The file descriptor is still
133 kept open but the file object behaves like a closed file. The ``FileIO``
134 object also got a new readonly attribute ``closefd``.
135
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000136- Issue #3626: On cygwin, starting python with a non-existent script name
137 would not display anything if the file name is only 1 character long.
138
Amaury Forgeot d'Arc424b4812008-10-30 22:25:31 +0000139- Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
140 method does not return iterators for the 4th and 5th items.
141
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000142- Issue #3723: Fixed initialization of subinterpreters.
Christian Heimes6a27efa2008-10-30 21:48:26 +0000143
Christian Heimes5833a2f2008-10-30 21:40:04 +0000144- Issue #4213: The file system encoding is now normalized by the
145 codec subsystem, for example UTF-8 is turned into utf-8.
146
Christian Heimes9c94ba42008-10-30 21:34:02 +0000147- Issue #4200: Changed the atexit module to store its state in its
148 PyModuleDef atexitmodule. This fixes a bug with multiple subinterpeters.
149
Christian Heimesfec925b2008-10-30 21:22:55 +0000150- Issue #4237: io.FileIO() was raising invalid warnings caused by
151 insufficient initialization of PyFileIOObject struct members.
152
Amaury Forgeot d'Arcf43ee812008-10-30 20:58:42 +0000153- Issue #4170: Pickling a collections.defaultdict object would crash the
154 interpreter.
155
Benjamin Peterson08a8f5f2008-10-19 14:15:00 +0000156- Issue #4146: Compilation on OpenBSD has been restored.
157
Brett Cannonda780432008-10-17 03:38:50 +0000158- Issue #3574: compile() incorrectly handled source code encoded as Latin-1.
159
Amaury Forgeot d'Arccf8016a2008-10-09 23:37:48 +0000160- Issues #2384 and #3975: Tracebacks were not correctly printed when the
161 source file contains a ``coding:`` header: the wrong line was displayed, and
162 the encoding was not respected.
163
Martin v. Löwis4e0630c2008-10-07 13:16:28 +0000164- Issue #3740: Null-initialize module state.
165
Benjamin Peterson60320cb2008-09-26 21:49:22 +0000166- Issue #3946: PyObject_CheckReadBuffer crashed on a memoryview object.
167
Amaury Forgeot d'Arcd0db98f2008-09-21 21:49:01 +0000168- Issue #1688: On Windows, the input() prompt was not correctly displayed if it
169 contains non-ascii characters.
170
Martin v. Löwis6fea2332008-09-25 04:15:27 +0000171- Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
172
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000173Library
174-------
175
Amaury Forgeot d'Arc87eee632008-10-17 20:15:53 +0000176- Issue #3664: The pickle module could segfault if a subclass of Pickler fails
177 to call the base __init__ method.
178
179- Issue #3725: telnetlib now works completely in bytes.
Benjamin Peterson3de7fb82008-10-15 20:54:24 +0000180
Martin v. Löwis33b64502008-10-15 05:58:17 +0000181- Issue #4072: Restore build_py_2to3.
182
Martin v. Löwisd8506df2008-10-06 15:19:21 +0000183- Issue #4014: Don't claim that Python has an Alpha release status, in addition
184 to claiming it is Mature.
185
Martin v. Löwis04dc25c2008-10-03 16:09:28 +0000186- Issue #3187: Add sys.setfilesystemencoding.
187
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000188- Issue #3187: Better support for "undecodable" filenames. Code by Victor
189 Stinner, with small tweaks by GvR.
190
Martin v. Löwis601149b2008-09-29 22:19:08 +0000191- Issue #3965: Allow repeated calls to turtle.Screen, by making it a
192 true singleton object.
193
Benjamin Peterson3a53fbb2008-09-27 22:04:16 +0000194- Issue #3911: ftplib.FTP.makeport() could give invalid port numbers.
195
Amaury Forgeot d'Arcb5cf3012008-09-25 22:27:43 +0000196- Issue #3929: When the database cannot be opened, dbm.open() would incorrectly
197 raise a TypeError: "'tuple' object is not callable" instead of the expected
198 dbm.error.
199
Martin v. Löwis60ebb8b2008-09-21 07:32:10 +0000200- Bug #3884: Make the turtle module toplevel again.
201
Thomas Heller1308c262008-09-24 19:01:29 +0000202- Issue #3547: Fixed ctypes structures bitfields of varying integer
203 sizes.
204
Gerhard Häring6117f422008-09-22 06:04:51 +0000205Extension Modules
206-----------------
207
208- Issue #3659: Subclasses of str didn't work as SQL parameters.
209
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000210Build
211-----
212
Martin v. Löwis900646e2008-11-06 17:30:03 +0000213- Issue #4120: Exclude manifest from extension modules in VS2008.
214
Martin v. Löwisc820eaf2008-10-17 13:47:20 +0000215- Issue #4091: Install pythonxy.dll in system32 again.
216
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000217- Issue #4018: Disable "for me" installations on Vista.
218
Martin v. Löwisb37509b2008-11-04 20:45:29 +0000219- Issue #4204: Fixed module build errors on FreeBSD 4.
220
Martin v. Löwis33b64502008-10-15 05:58:17 +0000221Tools/Demos
222-----------
223
Martin v. Löwis869bad92008-10-17 15:54:44 +0000224- Issue #3717: Fix Demo/embed/demo.c.
225
Martin v. Löwis33b64502008-10-15 05:58:17 +0000226- Issue #4072: Add a distutils demo for build_py_2to3.
227
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000228
Barry Warsaw8509df72008-08-21 03:02:47 +0000229What's New in Python 3.0 release candidate 1
230============================================
231
Barry Warsawb8854802008-09-18 03:00:28 +0000232*Release date: 17-Sep-2008*
Barry Warsaw8509df72008-08-21 03:02:47 +0000233
234Core and Builtins
235-----------------
236
Benjamin Peterson5e19e442008-09-10 21:47:03 +0000237- Issue #3827: memoryview lost its size attribute in favor of using len(view).
238
Hirokazu Yamamoto167b12b2008-09-09 14:01:25 +0000239- Issue #3813: could not lanch python.exe via symbolic link on cygwin.
240
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000241- Issue #3705: fix crash when given a non-ascii value on the command line for
Amaury Forgeot d'Arc8530e852008-09-09 07:28:22 +0000242 the "-c" and "-m" parameters. Now the behaviour is as expected under Linux,
243 although under Windows it fails at a later point.
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000244
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000245- Issue #3279: Importing site at interpreter was failing silently because the
246 site module uses the open builtin which was not initialized at the time.
247
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000248- Issue #3660: Corrected a reference leak in str.encode() when the encoder
249 does not return a bytes object.
250
251- Issue #3774: Added a few more checks in PyTokenizer_FindEncoding to handle
Amaury Forgeot d'Arc1b933ed2008-09-04 22:34:09 +0000252 error conditions.
253
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000254- Issue #3594: Fix Parser/tokenizer.c:fp_setreadl() to open the file being
Brett Cannon8a9583e2008-09-04 05:04:25 +0000255 tokenized by either a file path or file pointer for the benefit of
256 PyTokenizer_FindEncoding().
257
Antoine Pitroufff95302008-09-03 18:58:51 +0000258- Issue #3696: Error parsing arguments on OpenBSD <= 4.4 and Cygwin. On
259 these systems, the mbstowcs() function is slightly buggy and must be
260 replaced with strlen() for the purpose of counting of number of wide
261 characters needed to represent the multi-byte character string.
262
Antoine Pitrou658fad82008-09-03 18:34:34 +0000263- Issue #3697: "Fatal Python error: Cannot recover from stack overflow"
264 could be easily encountered under Windows in debug mode when exercising
265 the recursion limit checking code, due to bogus handling of recursion
266 limit when USE_STACKCHEK was enabled.
267
Brett Cannon54bd41d2008-09-02 04:01:42 +0000268- Issue 3639: The _warnings module could segfault the interpreter when
269 unexpected types were passed in as arguments.
270
Antoine Pitrouc6b09eb2008-09-01 15:10:14 +0000271- Issue #3712: The memoryview object had a reference leak and didn't support
272 cyclic garbage collection.
273
Antoine Pitrouf71995782008-08-29 18:37:05 +0000274- Issue #3668: Fix a memory leak with the "s*" argument parser in
275 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
276 was correctly parsed but parsing of subsequent arguments failed.
277
Amaury Forgeot d'Arcdb26f7c2008-08-29 07:13:32 +0000278- Issue #3611: An exception __context__ could be cleared in a complex pattern
279 involving a __del__ method re-raising an exception.
280
Antoine Pitrouec569b72008-08-26 22:40:48 +0000281- Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
282 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
283 mechanism. In the process, fix a bug where isinstance() and issubclass(),
284 when given a tuple of classes as second argument, were looking up
285 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
286 type object.
287
Antoine Pitroue2dffc02008-08-26 22:02:58 +0000288- Issue #3663: Py_None was decref'd when printing SyntaxErrors.
289
Benjamin Peterson9edd2bd2008-08-27 00:31:37 +0000290- Issue #3651: Fix various memory leaks when using the buffer
291 interface, or when the "s#" code of PyArg_ParseTuple is given a
292 bytes object.
293
Neal Norwitz6ae2eb22008-08-24 23:50:08 +0000294- Issue #3657: Fix uninitialized memory read when pickling longs.
295 Found by valgrind.
296
Neal Norwitz3ce5d922008-08-24 07:08:55 +0000297- Apply security patches from Apple.
298
Neal Norwitz2f99b242008-08-24 05:48:10 +0000299- Fix crashes on memory allocation failure found with failmalloc.
300
301- Fix memory leaks found with valgrind and update suppressions file.
302
303- Fix compiler warnings in opt mode which would lead to invalid memory reads.
304
305- Fix problem using wrong name in decimal module reported by pychecker.
306
Amaury Forgeot d'Arc20443f32008-08-22 22:05:20 +0000307- Issue #3650: Fixed a reference leak in bytes.split('x').
308
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000309- bytes(o) now tries to use o.__bytes__() before using fallbacks.
310
Gregory P. Smith207f2112008-09-07 06:29:10 +0000311- Issue #1204: The configure script now tests for additional libraries
312 that may be required when linking against readline. This fixes issues
313 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
314
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000315C API
316-----
317
318- PyObject_Bytes and PyBytes_FromObject were added.
319
Barry Warsaw8509df72008-08-21 03:02:47 +0000320Library
321-------
322
Guido van Rossum698280d2008-09-10 17:44:35 +0000323- Issue #3756: make re.escape() handle bytes as well as str.
324
Georg Brandl7cd67cc2008-09-09 19:31:25 +0000325- Issue #3800: fix filter() related bug in formatter.py.
326
Antoine Pitrou5fe291f2008-09-06 23:00:03 +0000327- Issue #874900: fix behaviour of threading module after a fork.
328
Antoine Pitrou9e4fdf42008-09-05 23:43:02 +0000329- Issue #3535: zipfile couldn't read some zip files larger than 2GB.
330
331- Issue #3776: Deprecate the bsddb package for removal in 3.0.
332
333- Issue #3762: platform.architecture() fails if python is lanched via
334 its symbolic link.
335
Antoine Pitroud79dc622008-09-05 00:03:33 +0000336- Issue #3660: fix a memory leak in the C accelerator of the pickle module.
337
Antoine Pitrou1d6a16b2008-09-04 21:32:09 +0000338- Issue #3160: the "bdist_wininst" distutils command didn't work.
339
Guilherme Polob212b752008-09-04 11:21:31 +0000340- Issue #1658: tkinter changes dict size during iteration in both
341 tkinter.BaseWidget and tkinter.scrolledtext.ScrolledText.
342
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000343- The bsddb module (and therefore the dbm.bsd module) has been removed.
Gregory P. Smith451e99b2008-09-04 04:46:48 +0000344 It is now maintained outside of the standard library at
345 http://www.jcea.es/programacion/pybsddb.htm.
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000346
Facundo Batistac469d4c2008-09-03 22:49:01 +0000347- Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
348 to the urlparse one. Added a DeprecationWarning in the old module, it
349 will be deprecated in the future.
350
Marc-André Lemburg7b2b1f92008-09-02 12:10:46 +0000351- Issue #3719: platform.architecture() fails if there are spaces in the
352 path to the Python binary.
353
Brett Cannonec92e182008-09-02 02:46:59 +0000354- Issue 3602: As part of the merge of r66135, make the parameters on
355 warnings.catch_warnings() keyword-only. Also remove a DeprecationWarning.
356
Benjamin Petersonb3085c92008-09-01 23:09:31 +0000357- The deprecation warnings for the camelCase threading API names were removed.
358
Jesse Noller338f5782008-09-03 18:22:19 +0000359- Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
360 SEM_VALUE_MAX.
361
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000362Extension Modules
363-----------------
364
Antoine Pitrou9cadb1b2008-09-15 23:02:56 +0000365- Issue #3782: os.write() must not accept unicode strings.
366
Amaury Forgeot d'Arcd8976f12008-09-02 23:22:56 +0000367- Issue #2975: When compiling several extension modules with Visual Studio 2008
368 from the same python interpreter, some environment variables would grow
369 without limit.
370
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000371- Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
372 exploitation of poor argument checking.
373
Jesus Cea6ba33292008-08-31 14:12:11 +0000374- bsddb code updated to version 4.7.3pre2. This code is the same than
375 Python 2.6 one, since the intention is to keep an unified 2.x/3.x codebase.
376 The Python code is automatically translated using "2to3". Please, do not
377 update this code in Python 3.0 by hand. Update the 2.6 one and then
378 do "2to3".
379
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000380- The _bytesio and _stringio modules are now compiled into the python binary.
381
Gregory P. Smith693fc462008-09-06 20:13:06 +0000382- Issue #3492 and #3790: Fixed the zlib module and zipimport module uses of
383 mutable bytearray objects where they should have been using immutable bytes.
384
Gregory P. Smith0a608fd2008-09-06 21:34:51 +0000385- Issue #3797: Fixed the dbm, marshal, mmap, ossaudiodev, & winreg modules to
386 return bytes objects instead of bytearray objects.
387
Gregory P. Smith693fc462008-09-06 20:13:06 +0000388
Neal Norwitz8f2f22a2008-08-24 20:59:23 +0000389Tools/Demos
390-----------
391
392- Fix Misc/gdbinit so it works.
393
Barry Warsaw8509df72008-08-21 03:02:47 +0000394
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000395Build
396-----
397
Hirokazu Yamamoto54a1cc62008-09-09 17:55:11 +0000398- Issue #3812: Failed to build python if configure --without-threads.
399
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000400- Issue #3791: Remove the bsddb module from the Windows installer, and the
401 core bsddb library from the Windows build files.
402
403
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000404What's new in Python 3.0b3?
405===========================
406
Barry Warsaw57c10582008-08-21 02:39:51 +0000407*Release date: 20-Aug-2008*
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000408
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000409Core and Builtins
410-----------------
411
Benjamin Petersonbc74e5b2008-08-23 20:19:17 +0000412- Issue #3653: Fix a segfault when sys.excepthook was called with invalid
413 arguments.
414
Antoine Pitrou616d2852008-08-19 22:09:34 +0000415- Issue #2394: implement more of the memoryview API, with the caveat that
416 only one-dimensional contiguous buffers are supported and exercised right
417 now. Slicing, slice assignment and comparison (equality and inequality)
418 have been added. Also, the tolist() method has been implemented, but only
419 for byte buffers. Endly, the API has been updated to return bytes objects
420 wherever it used to return bytearrays.
421
Antoine Pitrouee58fa42008-08-19 18:22:14 +0000422- Issue #3560: clean up the new C PyMemoryView API so that naming is
423 internally consistent; add macros PyMemoryView_GET_BASE() and
424 PyMemoryView_GET_BUFFER() to access useful properties of a memory views
425 without relying on a particular implementation; remove the ill-named
426 PyMemoryView() function (PyMemoryView_GET_BUFFER() can be used instead).
427
Thomas Hellerf5049fc2008-08-19 19:49:49 +0000428- ctypes function pointers that are COM methods have a boolean True
429 value again.
430
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000431- Issue #1819: function calls with several named parameters are now on
432 average 35% faster (as measured by pybench).
433
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000434- The undocumented C APIs PyUnicode_AsString() and
435 PyUnicode_AsStringAndSize() were made private to the interpreter, in
436 order to be able to refine their interfaces for Python 3.1.
437
438 If you need to access the UTF-8 representation of a Unicode object
439 as bytes string, please use PyUnicode_AsUTF8String() instead.
440
Antoine Pitrouaf14b792008-08-07 21:50:41 +0000441- Issue #3460: PyUnicode_Join() implementation is 10% to 80% faster thanks
442 to Python 3.0's stricter semantics which allow to avoid successive
443 reallocations of the result string (this also affects str.join()).
444
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000445
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000446Library
447-------
448
Hye-Shik Chang50d1f792008-08-23 08:03:03 +0000449- Issue #1276: Added temporary aliases for CJK Mac encodings to resolve
450 a build problem on MacOS with CJK locales. It adds four temporary
451 mappings to existing legacy codecs that are virtually compatible
452 with Mac encodings. They will be replaced by codecs correctly
453 implemented in 3.1.
454
Amaury Forgeot d'Arc41e36672008-08-20 21:35:50 +0000455- Issue #3614: Corrected a typo in xmlrpc.client, leading to a NameError
456 "global name 'header' is not defined".
457
Antoine Pitroufd036452008-08-19 17:56:33 +0000458- Issue #2834: update the regular expression library to match the unicode
459 standards of py3k. In other words, mixing bytes and unicode strings
460 (be it as pattern, search string or replacement string) raises a TypeError.
461 Moreover, the re.UNICODE flag is enabled automatically for unicode patterns,
462 and can be disabled by specifying a new re.ASCII flag; as for bytes
463 patterns, ASCII matching is the only option and trying to specify re.UNICODE
464 for such patterns raises a ValueError.
465
Guido van Rossum52dbbb92008-08-18 21:44:30 +0000466- Issue #3300: make urllib.parse.[un]quote() default to UTF-8.
467 Code contributed by Matt Giuca. quote() now encodes the input
468 before quoting, unquote() decodes after unquoting. There are
469 new arguments to change the encoding and errors settings.
470 There are also new APIs to skip the encode/decode steps.
471 [un]quote_plus() are also affected.
472
Nick Coghlan36f49522008-08-18 12:31:52 +0000473- Issue #2235: numbers.Number now blocks inheritance of the default id()
474 based hash because that hash mechanism is not correct for numeric types.
475 All concrete numeric types that inherit from Number (rather than just
476 registering with it) must explicitly provide a hash implementation in
477 order for their instances to be hashable.
478
Benjamin Peterson4cd6a952008-08-17 20:23:46 +0000479- Issue #2676: in the email package, content-type parsing was hanging on
480 pathological input because of quadratic or exponential behaviour of a
481 regular expression.
482
Antoine Pitrou87695762008-08-14 22:44:29 +0000483- Issue #3476: binary buffered reading through the new "io" library is now
484 thread-safe.
485
Robert Schuppenies3d1c7de2008-08-10 11:28:17 +0000486- Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
487 menu entries were not deleted.
488
Lars Gustäbel0c24e8b2008-08-02 11:43:24 +0000489- Remove the TarFileCompat class from tarfile.py.
490
Amaury Forgeot d'Arcbdbddf82008-08-01 00:06:49 +0000491- Issue #2491: os.fdopen is now almost an alias for the built-in open(), and
492 accepts the same parameters. It just checks that its first argument is an
493 integer.
494
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000495- Issue #3394: zipfile.writestr sets external attributes when passed a
496 file name rather than a ZipInfo instance, so files are extracted with
497 mode 0600 rather than 000 under Unix.
498
Antoine Pitrouc66f9092008-07-28 19:46:11 +0000499- Issue #2523: Fix quadratic behaviour when read()ing a binary file without
500 asking for a specific length.
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000501
Martin v. Löwis371bb502008-08-16 13:02:57 +0000502Extension Modules
503-----------------
504
505- Bug #3542: Support Unicode strings in _msi module.
506
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000507What's new in Python 3.0b2?
508===========================
509
Barry Warsaw4bd1cef2008-07-18 02:28:44 +0000510*Release date: 17-Jul-2008*
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000511
512Core and Builtins
513-----------------
514
Mark Dickinson65fe25e2008-07-16 11:30:51 +0000515- Issue #3008: the float type has a new instance method 'float.hex'
516 and a new class method 'float.fromhex' to convert floating-point
517 numbers to and from hexadecimal strings, respectively.
518
Eric Smithd68af8f2008-07-16 00:15:35 +0000519- Issue #3083: Add alternate (#) formatting for bin, oct, hex output
520 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
521
Amaury Forgeot d'Arca4db6862008-07-04 21:26:43 +0000522- Issue #3280: like chr(), the "%c" format now accepts unicode code points
523 beyond the Basic Multilingual Plane (above 0xffff) on all configurations. On
524 "narrow Unicode" builds, the result is a string of 2 code units, forming a
525 UTF-16 surrogate pair.
526
Georg Brandld52429f2008-07-04 15:55:02 +0000527- Issue #3282: str.isprintable() should return False for undefined
528 Unicode characters.
529
Martin v. Löwis029656f2008-06-30 04:06:08 +0000530- Issue #3236: Return small longs from PyLong_FromString.
531
Benjamin Petersone6528212008-07-15 15:32:09 +0000532- Exception tracebacks now support exception chaining.
533
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000534Library
535-------
536
Brett Cannonc2542e92008-07-25 18:19:20 +0000537- Removed the sunaudio module. Use sunau instead.
538
Thomas Heller47bc8092008-08-19 06:38:12 +0000539- Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
540 api functions without holding the GIL, which could lead to a fatal
541 error when they failed.
542
543- Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
544
Georg Brandl30704ea02008-07-23 15:07:12 +0000545- Removed "ast" function aliases from the parser module.
546
Thomas Heller15383a02008-07-15 19:46:52 +0000547- Issue #3313: Fixed a crash when a failed dlopen() call does not set
548 a valid dlerror() message.
549
Thomas Heller0261e1e2008-07-15 17:25:07 +0000550- Issue #3258: Fixed a crash when a ctypes POINTER type to an
551 incomplete structure was created.
552
Georg Brandl1abcbf82008-07-01 19:28:43 +0000553- Issue #2683: Fix inconsistency in subprocess.Popen.communicate(): the
554 argument now must be a bytes object in any case.
555
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000556- Issue #3145: help("modules whatever") failed when trying to load the source
557 code of every single module of the standard library, including invalid files
558 used in the test suite.
559
Georg Brandlbded4d32008-07-17 18:15:35 +0000560- The gettext library now consistently uses Unicode strings for message ids
561 and message strings, and ``ugettext()`` and the like don't exist anymore.
Benjamin Peterson801844d2008-07-14 14:32:15 +0000562
Benjamin Petersone6528212008-07-15 15:32:09 +0000563- The traceback module has been expanded to handle chained exceptions.
564
Amaury Forgeot d'Arc612f61f2008-07-02 23:02:21 +0000565C API
566-----
567
568- Issue #3247: the function Py_FindMethod was removed. Modern types should
569 use the tp_methods slot instead.
570
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000571Tools/Demos
572-----------
573
Georg Brandl336341f2008-07-01 20:21:28 +0000574- The Mac/Demos directory has been removed.
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000575
Georg Brandl336341f2008-07-01 20:21:28 +0000576- All of the Mac scripts have been removed (including BuildApplet.py).
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000577
578
Brett Cannon0d71ee72008-05-08 18:13:40 +0000579What's new in Python 3.0b1?
580===========================
581
Barry Warsawc1e689e2008-06-19 00:35:43 +0000582*Release date: 18-Jun-2008*
Brett Cannon0d71ee72008-05-08 18:13:40 +0000583
584Core and Builtins
585-----------------
586
Brett Cannondb734912008-06-27 00:52:15 +0000587- Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
588 argument being anything other than a dict or None. Also fixed a bug in error
589 handling when 'message' and 'category' were both set to None, triggering a
590 bus error.
591
Amaury Forgeot d'Arcc856c7a2008-06-16 19:50:09 +0000592- Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
593 holds the last (strong) reference to its referent.
594
Georg Brandl559e5d72008-06-11 18:37:52 +0000595- Issue #2630: implement PEP 3138. repr() now returns printable
596 Unicode characters unescaped, to get an ASCII-only representation
597 of an object use ascii().
598
Amaury Forgeot d'Arcf1ca0b12008-06-11 17:40:47 +0000599- Issue #1342: On windows, Python could not start when installed in a
600 directory with non-ascii characters.
601
Martin v. Löwis1a214512008-06-11 05:26:20 +0000602- Implement PEP 3121: new module initialization and finalization API.
603
Georg Brandle1b5ac62008-06-04 13:06:58 +0000604- Removed the already-defunct ``-t`` option.
605
Amaury Forgeot d'Arc74c71f52008-05-26 21:41:42 +0000606- Issue #2957: Corrected a ValueError "recursion limit exceeded", when
607 unmarshalling many code objects, which happens when importing a
608 large .pyc file (~1000 functions).
609
Georg Brandl52b92cc2008-05-25 09:43:03 +0000610- Issue #2963: fix merging oversight that disabled method cache for
611 all types.
Georg Brandl1bcf35a2008-05-25 09:32:09 +0000612
Georg Brandlc9b09532008-05-25 09:24:38 +0000613- Issue #2964: fix a missing INCREF in instancemethod_descr_get.
614
Georg Brandl52b92cc2008-05-25 09:43:03 +0000615- Issue #2895: Don't crash when given bytes objects as keyword names.
Georg Brandld8b690f2008-05-16 17:28:50 +0000616
Georg Brandl52b92cc2008-05-25 09:43:03 +0000617- Issue #2798: When parsing arguments with PyArg_ParseTuple, the "s"
618 code now allows any unicode string and returns a utf-8 encoded
619 buffer, just like the "s#" code already does. The "z" code was
620 corrected as well.
Amaury Forgeot d'Arc07404592008-05-12 13:19:07 +0000621
Georg Brandl52b92cc2008-05-25 09:43:03 +0000622- Issue #2863: generators now have a ``gen.__name__`` attribute that
623 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
624 ``func.func_code.co_name``. The repr() of a generator now also
625 contains this name.
Alexandre Vassalottie9f305f2008-05-16 04:39:54 +0000626
627- Issue #2831: enumerate() now has a ``start`` argument.
628
Georg Brandl52b92cc2008-05-25 09:43:03 +0000629- Issue #2801: fix bug in the float.is_integer method where a
630 ValueError was sometimes incorrectly raised.
Mark Dickinsonc4352b02008-05-09 13:55:01 +0000631
Georg Brandl52b92cc2008-05-25 09:43:03 +0000632- The ``--with-toolbox-glue`` option (and the associated
633 pymactoolbox.h) have been removed.
Benjamin Peterson79629ab2008-05-14 21:07:12 +0000634
Georg Brandl52b92cc2008-05-25 09:43:03 +0000635- Issue #2196: hasattr() now lets exceptions which do not inherit
636 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
637 ignoring them.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000638
Benjamin Petersoneec3d712008-06-11 15:59:43 +0000639- #3021 Exception reraising sematics have been significantly improved. However,
640 f_exc_type, f_exc_value, and f_exc_traceback cannot be accessed from Python
641 code anymore.
642
Benjamin Peterson4f92ca42008-06-11 20:21:57 +0000643- Three of PyNumberMethods' members, nb_coerce, nb_hex, and nb_oct, have been
644 removed.
645
Brett Cannon0d71ee72008-05-08 18:13:40 +0000646Extension Modules
647-----------------
648
Georg Brandl38feaf02008-05-25 07:45:51 +0000649- Renamed ``_winreg`` module to ``winreg``.
650
Georg Brandl52b92cc2008-05-25 09:43:03 +0000651- Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
652 platform.
Alexandre Vassalottibee32532008-05-16 18:15:12 +0000653
654- Support for Windows 9x has been removed from the winsound module.
655
Georg Brandl52b92cc2008-05-25 09:43:03 +0000656- Issue #2870: cmathmodule.c compile error.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000657
Brett Cannon0d71ee72008-05-08 18:13:40 +0000658Library
659-------
660
Benjamin Peterson87069fd2008-08-20 02:00:14 +0000661- The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
662 symtable.Symbol have been removed.
663
Amaury Forgeot d'Arccb0d2d72008-06-18 22:19:22 +0000664- Patch #3133: http.server.CGIHTTPRequestHandler did not work on windows.
665
Jeremy Hylton1afc1692008-06-18 20:49:58 +0000666- a new ``urllib`` package was created. It consists of code from
667 ``urllib``, ``urllib2``, ``urlparse``, and ``robotparser``. The old
668 modules have all been removed. The new package has five submodules:
669 ``urllib.parse``, ``urllib.request``, ``urllib.response``,
670 ``urllib.error``, and ``urllib.robotparser``. The
671 ``urllib.request.urlopen()`` function uses the url opener from
672 ``urllib2``. (Note that the unittests have not been renamed for the
673 beta, but they will be renamed in the future.)
674
Benjamin Petersona0c0a4a2008-06-12 22:15:50 +0000675- rfc822 has been removed in favor of the email package.
676
Benjamin Peterson425ea7f2008-06-12 14:11:35 +0000677- mimetools has been removed in favor of the email package.
Benjamin Peterson23c51a22008-06-12 14:06:57 +0000678
Barry Warsawf5019422008-06-12 02:42:00 +0000679- Patch #2849: Remove use of rfc822 module from standard library.
680
Alexandre Vassalotti794652d2008-06-11 22:58:36 +0000681- Added C optimized implementation of io.StringIO.
682
Alexandre Vassalottica2d6102008-06-12 18:26:05 +0000683- The ``pickle`` module is now automatically use an optimized C
684 implementation of Pickler and Unpickler when available. The
685 ``cPickle`` module is no longer needed.
686
Georg Brandl877b10a2008-06-01 21:25:55 +0000687- Removed the ``htmllib`` and ``sgmllib`` modules.
688
Georg Brandl61013952008-05-28 15:56:30 +0000689- The deprecated ``SmartCookie`` and ``SimpleCookie`` classes have
690 been removed from ``http.cookies``.
691
Brett Cannona23810f2008-05-26 19:04:21 +0000692- The ``commands`` module has been removed. Its getoutput() and
693 getstatusoutput() functions have been moved to the ``subprocess`` module.
694
Georg Brandl3d5c4252008-05-26 18:03:26 +0000695- The ``http`` package was created; it contains the old ``httplib``
696 as ``http.client``, ``Cookie`` as ``http.cookies``, ``cookielib``
697 as ``http.cookiejar``, and the content of the three ``HTTPServer``
698 modules as ``http.server``.
699
Georg Brandl38eceaa2008-05-26 11:14:17 +0000700- The ``xmlrpc`` package was created; it contains the old
701 ``xmlrpclib`` module as ``xmlrpc.client`` and the content of
702 the old ``SimpleXMLRPCServer`` and ``DocXMLRPCServer`` modules
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000703 as ``xmlrpc.server``.
Georg Brandl38eceaa2008-05-26 11:14:17 +0000704
705- The ``dbm`` package was created, containing the old modules
706 ``anydbm`` and ``whichdb`` in its ``__init__.py``, and having
707 ``dbm.gnu`` (was ``gdbm``), ``dbm.bsd`` (was ``dbhash``),
708 ``dbm.ndbm`` (was ``dbm``) and ``dbm.dumb`` (was ``dumbdbm``)
709 as submodules.
710
Georg Brandl52b92cc2008-05-25 09:43:03 +0000711- The ``repr`` module has been renamed to ``reprlib``.
Alexandre Vassalotti1f2ba4b2008-05-16 07:12:44 +0000712
Georg Brandl52b92cc2008-05-25 09:43:03 +0000713- The ``statvfs`` module has been removed.
Brett Cannonacbb7862008-05-16 00:42:57 +0000714
Georg Brandl52b92cc2008-05-25 09:43:03 +0000715- Issue #1713041: fix pprint's handling of maximum depth.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000716
Georg Brandl52b92cc2008-05-25 09:43:03 +0000717- Issue #2250: Exceptions raised during evaluation of names in
718 rlcompleter's ``Completer.complete()`` method are now caught and
719 ignored.
Alexandre Vassalotti8ae3e052008-05-16 00:41:41 +0000720
Georg Brandl52b92cc2008-05-25 09:43:03 +0000721- Patch #2659: Added ``break_on_hyphens`` option to textwrap's
722 ``TextWrapper`` class.
Alexandre Vassalotti1d1eaa42008-05-14 22:59:42 +0000723
Alexandre Vassalotti6461e102008-05-15 22:09:29 +0000724- Issue #2487: change the semantics of math.ldexp(x, n) when n is too
725 large to fit in a C long. ldexp(x, n) now returns a zero (with
726 suitable sign) if n is large and negative; previously, it raised
727 OverflowError.
728
Georg Brandl52b92cc2008-05-25 09:43:03 +0000729- The ``ConfigParser`` module has been renamed to ``configparser``.
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000730
Georg Brandl52b92cc2008-05-25 09:43:03 +0000731- Issue #2865: webbrowser.open() works again in a KDE environment.
Amaury Forgeot d'Arc2b2b44d2008-05-12 14:41:00 +0000732
Georg Brandl52b92cc2008-05-25 09:43:03 +0000733- The ``multifile`` module has been removed.
Brett Cannond3343cb2008-05-12 03:18:21 +0000734
Georg Brandl52b92cc2008-05-25 09:43:03 +0000735- The ``SocketServer`` module has been renamed to ``socketserver``.
Alexandre Vassalottice261952008-05-12 02:31:37 +0000736
Georg Brandl52b92cc2008-05-25 09:43:03 +0000737- Fixed the ``__all__`` setting on ``collections`` to include
738 ``UserList`` and ``UserString``.
Brett Cannon23a4a7b2008-05-12 00:56:28 +0000739
Brett Cannoncf3520c2008-05-11 22:47:58 +0000740- The sre module has been removed.
741
Alexandre Vassalottif260e442008-05-11 19:59:59 +0000742- The Queue module has been renamed to queue.
743
Alexandre Vassalottif7fa63d2008-05-11 08:55:36 +0000744- The copy_reg module has been renamed to copyreg.
745
Brett Cannond8b61ee2008-05-11 03:00:26 +0000746- The mhlib module has been removed.
747
Brett Cannonbd474422008-05-10 22:42:14 +0000748- The ihooks module has been removed.
749
Brett Cannonb59a2bd2008-05-10 22:03:16 +0000750- The fpformat module has been removed.
751
Brett Cannonf4fd9932008-05-10 21:11:46 +0000752- The dircache module has been removed.
753
Brett Cannond175b4c2008-05-10 03:19:54 +0000754- The Canvas module has been removed.
755
Mark Dickinsonb27406c2008-05-09 13:42:33 +0000756- The Decimal module gained the magic methods __round__, __ceil__,
757 __floor__ and __trunc__, to give support for round, math.ceil,
758 math.floor and math.trunc.
759
Brett Cannon900ee3a2008-05-08 20:31:11 +0000760- The user module has been removed.
761
Brett Cannon34afe872008-05-08 20:31:44 +0000762- The mutex module has been removed.
763
Brett Cannon0d71ee72008-05-08 18:13:40 +0000764- The imputil module has been removed.
765
Georg Brandl52b92cc2008-05-25 09:43:03 +0000766- os.path.walk has been removed in favor of os.walk.
Benjamin Petersond71ca412008-05-08 23:44:58 +0000767
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000768- pdb gained the "until" command.
769
Georg Brandl52b92cc2008-05-25 09:43:03 +0000770- The test.test_support module has been renamed to test.support.
Benjamin Petersonee8712c2008-05-20 21:35:26 +0000771
Georg Brandl32de7af2008-08-18 23:07:41 +0000772- The threading module API was renamed to be PEP 8 compliant. The
773 old names are still present, but will be removed in the near future.
Benjamin Peterson672b8032008-06-11 19:14:14 +0000774
Georg Brandl294d5a92008-06-01 19:25:32 +0000775Tools/Demos
776-----------
777
778- The bgen tool has been removed.
Benjamin Peterson630c8292008-06-01 18:50:38 +0000779
Brett Cannon0d71ee72008-05-08 18:13:40 +0000780Build
781-----
782
783
Barry Warsaw66079cd2008-04-04 01:36:36 +0000784What's New in Python 3.0a5?
785===========================
786
Barry Warsaw9eab8b02008-05-08 13:05:38 +0000787*Release date: 08-May-2008*
Barry Warsaw66079cd2008-04-04 01:36:36 +0000788
789Core and Builtins
790-----------------
791
Georg Brandl52b92cc2008-05-25 09:43:03 +0000792- Fixed misbehaviour of PyLong_FromSsize_t on systems where
793 sizeof(size_t) > sizeof(long).
Mark Dickinson7ab6be22008-04-15 21:42:42 +0000794
Georg Brandl52b92cc2008-05-25 09:43:03 +0000795- Issue #2221: Corrected a SystemError "error return without exception
796 set", when the code executed by exec() raises an exception, and
797 sys.stdout.flush() also raises an error.
Amaury Forgeot d'Arc7fedbe52008-04-10 21:03:09 +0000798
Georg Brandl52b92cc2008-05-25 09:43:03 +0000799- Bug #2565: The repr() of type objects now calls them 'class', not
800 'type' - whether they are builtin types or not.
Martin v. Löwis250ad612008-04-07 05:43:42 +0000801
Martin v. Löwis790465f2008-04-05 20:41:37 +0000802- The command line processing was converted to pass Unicode strings
803 through as unmodified as possible; as a consequence, the C API
804 related to command line arguments was changed to use wchar_t.
805
Georg Brandl52b92cc2008-05-25 09:43:03 +0000806- All backslashes in raw strings are interpreted literally. This
807 means that '\u' and '\U' escapes are not treated specially.
Benjamin Petersona2f837f2008-04-28 21:05:10 +0000808
Barry Warsaw66079cd2008-04-04 01:36:36 +0000809Extension Modules
810-----------------
811
812Library
813-------
814
Georg Brandl52b92cc2008-05-25 09:43:03 +0000815- ctypes objects now support the PEP3118 buffer interface.
Thomas Hellerb041fda2008-04-30 17:11:46 +0000816
Thomas Hellere106dc32008-04-24 18:39:36 +0000817- Issue #2682: ctypes callback functions now longer contain a cyclic
818 reference to themselves.
819
Georg Brandl52b92cc2008-05-25 09:43:03 +0000820- Issue #2058: Remove the buf attribute and add __slots__ to the
821 TarInfo class in order to reduce tarfile's memory usage.
Lars Gustäbelc2ea8c62008-04-14 10:05:48 +0000822
Martin v. Löwis8efc62c2008-04-10 19:02:25 +0000823- Bug #2606: Avoid calling .sort() on a dict_keys object.
824
Thomas Hellerbff533b2008-04-04 19:53:14 +0000825- The bundled libffi copy is now in sync with the recently released
826 libffi3.0.5 version, apart from some small changes to
827 Modules/_ctypes/libffi/configure.ac.
828
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000829Build
830-----
831
Mark Dickinsonb0e2b4c2008-04-26 20:48:56 +0000832- Issue #1496032: On alpha, use -mieee when gcc is the compiler.
833
Guido van Rossumdc21db32008-04-07 18:37:41 +0000834- "make install" is now an alias for "make altinstall", to prevent
Georg Brandl52b92cc2008-05-25 09:43:03 +0000835 accidentally overwriting a Python 2.x installation. Use "make
836 fullinstall" to force Python 3.0 to be installed as "python".
Guido van Rossumdc21db32008-04-07 18:37:41 +0000837
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000838- Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
839 gcc is used as compiler.
Barry Warsaw66079cd2008-04-04 01:36:36 +0000840
Georg Brandl52b92cc2008-05-25 09:43:03 +0000841
Barry Warsawa9d499d2008-03-01 18:38:07 +0000842What's New in Python 3.0a4?
843===========================
844
Barry Warsawbb5cd082008-04-02 23:33:27 +0000845*Release date: 02-Apr-2008*
Barry Warsawa9d499d2008-03-01 18:38:07 +0000846
Martin v. Löwis25931462008-03-17 20:43:42 +0000847Core and Builtins
848-----------------
849
850- Bug #2301: Don't try decoding the source code into the original
851 encoding for syntax errors.
852
Martin v. Löwis92fab752008-03-08 10:40:41 +0000853Extension Modules
854-----------------
855
Neal Norwitz6cf49cf2008-03-24 06:22:57 +0000856- The dl module was removed, use the ctypes module instead.
857
Martin v. Löwis92fab752008-03-08 10:40:41 +0000858- Use wchar_t functions in _locale module.
Barry Warsawa9d499d2008-03-01 18:38:07 +0000859
Martin v. Löwis071ef772008-03-08 11:24:24 +0000860Library
861-------
862
Georg Brandl52b92cc2008-05-25 09:43:03 +0000863- The class distutils.commands.build_py.build_py_2to3 can be used as a
864 build_py replacement to automatically run 2to3 on modules that are
865 going to be installed.
Martin v. Löwis73a22f02008-03-22 00:35:10 +0000866
Guido van Rossumf4169812008-03-17 22:56:06 +0000867- A new pickle protocol (protocol 3) is added with explicit support
868 for bytes. This is the default protocol. It intentionally cannot
869 be unpickled by Python 2.x.
870
871- When a pickle written by Python 2.x contains an (8-bit) str
872 instance, this is now decoded to a (Unicode) str instance. The
873 encoding used to do this defaults to ASCII, but can be overridden
874 via two new keyword arguments to the Unpickler class. Previously
875 this would create bytes instances, which is usually wrong: str
876 instances are often used to pickle attribute names etc., and text is
877 more common than binary data anyway.
878
Martin v. Löwis071ef772008-03-08 11:24:24 +0000879- Default to ASCII as the locale.getpreferredencoding, if the POSIX
Georg Brandl52b92cc2008-05-25 09:43:03 +0000880 system doesn't support CODESET and LANG isn't set or doesn't allow
881 deduction of an encoding.
Martin v. Löwis071ef772008-03-08 11:24:24 +0000882
Georg Brandl52b92cc2008-05-25 09:43:03 +0000883- Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned
884 value.
Gregory P. Smith425136b2008-03-17 20:45:21 +0000885
Georg Brandl52b92cc2008-05-25 09:43:03 +0000886- Issue #719888: Updated tokenize to use a bytes API. generate_tokens
887 has been renamed tokenize and now works with bytes rather than
888 strings. A new detect_encoding function has been added for
889 determining source file encoding according to PEP-0263. Token
890 sequences returned by tokenize always start with an ENCODING token
891 which specifies the encoding used to decode the file. This token is
892 used to encode the output of untokenize back to bytes.
893
Barry Warsawa9d499d2008-03-01 18:38:07 +0000894
Christian Heimesbc873412007-12-08 22:11:32 +0000895What's New in Python 3.0a3?
896===========================
897
Barry Warsaw659fc422008-03-01 17:45:23 +0000898*Release date: 29-Feb-2008*
Christian Heimesbc873412007-12-08 22:11:32 +0000899
900Core and Builtins
901-----------------
902
Georg Brandl52b92cc2008-05-25 09:43:03 +0000903- Issue #2282: io.TextIOWrapper was not overriding seekable() from
904 io.IOBase.
Ka-Ping Yeeddaa7062008-03-17 20:35:15 +0000905
Georg Brandl52b92cc2008-05-25 09:43:03 +0000906- Issue #2115: Important speedup in setting __slot__ attributes. Also
907 prevent a possible crash: an Abstract Base Class would try to access
908 a slot on a registered virtual subclass.
Christian Heimesa156e092008-02-16 07:38:31 +0000909
Georg Brandl52b92cc2008-05-25 09:43:03 +0000910- Fixed repr() and str() of complex numbers with infinity or nan as
911 real or imaginary part.
Christian Heimesa156e092008-02-16 07:38:31 +0000912
Georg Brandl52b92cc2008-05-25 09:43:03 +0000913- Clear all free list during a gc.collect() of the highest generation
914 in order to allow pymalloc to free more arenas. Python may give back
915 memory to the OS earlier.
Christian Heimesa156e092008-02-16 07:38:31 +0000916
Georg Brandl52b92cc2008-05-25 09:43:03 +0000917- Issue #2045: Fix an infinite recursion triggered when printing a
918 subclass of collections.defaultdict, if its default_factory is set
919 to a bound method.
Christian Heimesa156e092008-02-16 07:38:31 +0000920
921- Fixed a minor memory leak in dictobject.c. The content of the free
922 list was not freed on interpreter shutdown.
923
Georg Brandl52b92cc2008-05-25 09:43:03 +0000924- Limit free list of method and builtin function objects to 256
925 entries each.
Christian Heimesa156e092008-02-16 07:38:31 +0000926
Georg Brandl52b92cc2008-05-25 09:43:03 +0000927- Patch #1953: Added ``sys._compact_freelists()`` and the C API
928 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
Christian Heimesa156e092008-02-16 07:38:31 +0000929 to compact the internal free lists of pre-allocted ints and floats.
930
931- Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls.
Georg Brandl52b92cc2008-05-25 09:43:03 +0000932 Python expected the return type int but the fork familie returns
933 pi_t.
Christian Heimesa156e092008-02-16 07:38:31 +0000934
Georg Brandl52b92cc2008-05-25 09:43:03 +0000935- Issue #1678380: Fix a bug that identifies 0j and -0j when they
936 appear in the same code unit.
Christian Heimesa156e092008-02-16 07:38:31 +0000937
Georg Brandl52b92cc2008-05-25 09:43:03 +0000938- Issue #2025: Added tuple.count() and tuple.index() methods to comply
939 with the collections.Sequence API.
Raymond Hettinger65baa342008-02-07 00:41:02 +0000940
Georg Brandl52b92cc2008-05-25 09:43:03 +0000941- Fixed multiple reinitialization of the Python interpreter. The small
942 int list in longobject.c has caused a seg fault during the third
943 finalization.
Christian Heimesdfc12ed2008-01-31 15:16:38 +0000944
Georg Brandl52b92cc2008-05-25 09:43:03 +0000945- Issue #1973: bytes.fromhex('') raised SystemError.
Christian Heimesc04dac02008-01-30 11:27:57 +0000946
Georg Brandl52b92cc2008-05-25 09:43:03 +0000947- Issue #1771: remove cmp parameter from sorted() and list.sort().
Raymond Hettinger70b64fc2008-01-30 20:15:17 +0000948
Georg Brandl52b92cc2008-05-25 09:43:03 +0000949- Issue #1969: split and rsplit in bytearray are inconsistent.
Christian Heimes7b876152008-01-30 09:51:48 +0000950
Georg Brandl52b92cc2008-05-25 09:43:03 +0000951- map() no longer accepts None for the first argument. Use zip()
952 instead.
Raymond Hettinger1dfde1d2008-01-22 23:25:35 +0000953
Facundo Batista2336bdd2008-01-19 19:12:01 +0000954- Issue #1769: Now int("- 1") is not allowed any more.
955
Georg Brandl52b92cc2008-05-25 09:43:03 +0000956- Object/longobject.c: long(float('nan')) raises an OverflowError
957 instead of returning 0.
Christian Heimes386cd1e2008-01-15 02:01:20 +0000958
Georg Brandl52b92cc2008-05-25 09:43:03 +0000959- Issue #1762972: __file__ points to the source file instead of the
960 pyc/pyo file if the py file exists.
Christian Heimes3b06e532008-01-07 20:12:44 +0000961
Guido van Rossumab078dd2008-01-06 00:09:11 +0000962- Issue #1393: object_richcompare() returns NotImplemented instead of
963 False if the objects aren't equal, to give the other side a chance.
964
Guido van Rossume239b002008-01-06 00:44:20 +0000965- Issue #1692: Interpreter was not displaying location of SyntaxError.
Kurt B. Kaiser43b15092008-01-05 04:32:22 +0000966
Georg Brandl52b92cc2008-05-25 09:43:03 +0000967- Improve some exception messages when Windows fails to load an
968 extension module. Now we get for example '%1 is not a valid Win32
969 application' instead of 'error code 193'. Also use Unicode strings
970 to deal with non-English locales.
Amaury Forgeot d'Arcbccd63c2008-01-04 01:21:27 +0000971
Georg Brandl52b92cc2008-05-25 09:43:03 +0000972- Issue #1587: Added instancemethod wrapper for PyCFunctions. The
973 Python C API has gained a new type *PyInstanceMethod_Type* and the
974 functions *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)*
975 and *PyInstanceMethod_Function(im)*.
Christian Heimesa3534a62007-12-11 19:56:40 +0000976
Georg Brandl52b92cc2008-05-25 09:43:03 +0000977- Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed
978 from the gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE
979 are now enough to print the corresponding list of objects considered
980 by the garbage collector.
Amaury Forgeot d'Arcad8dcd52007-12-10 23:58:35 +0000981
Georg Brandl52b92cc2008-05-25 09:43:03 +0000982- Issue #1573: Improper use of the keyword-only syntax makes the
983 parser crash.
Christian Heimesbc873412007-12-08 22:11:32 +0000984
Georg Brandl52b92cc2008-05-25 09:43:03 +0000985- Issue #1564: The set implementation should special-case PyUnicode
986 instead of PyString.
Christian Heimes0ded5b52007-12-10 15:50:56 +0000987
Guido van Rossumea6775b2008-02-21 20:16:31 +0000988- Patch #1031213: Decode source line in SyntaxErrors back to its
989 original source encoding.
Christian Heimes7131fd92008-02-19 14:21:46 +0000990
Christian Heimes09aaa882008-02-23 15:01:06 +0000991- inspect.getsource() includes the decorators again.
992
Guido van Rossumea6775b2008-02-21 20:16:31 +0000993- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a
994 mountpoint.
Christian Heimes7131fd92008-02-19 14:21:46 +0000995
Georg Brandl52b92cc2008-05-25 09:43:03 +0000996- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
997 the first chunk fed to the decoder started with a BOM, but was
998 longer than 3 bytes.
Christian Heimes7131fd92008-02-19 14:21:46 +0000999
Christian Heimesbc873412007-12-08 22:11:32 +00001000Extension Modules
1001-----------------
1002
Georg Brandl52b92cc2008-05-25 09:43:03 +00001003- Code for itertools ifilter(), imap(), and izip() moved to bultins
1004 and renamed to filter(), map(), and zip(). Also, renamed
1005 izip_longest() to zip_longest() and ifilterfalse() to filterfalse().
Raymond Hettinger736c0ab2008-03-13 02:09:15 +00001006
Georg Brandl52b92cc2008-05-25 09:43:03 +00001007- Issue #1762972: Readded the reload() function as imp.reload().
Guido van Rossumea6775b2008-02-21 20:16:31 +00001008
Georg Brandl52b92cc2008-05-25 09:43:03 +00001009- Bug #2111: mmap segfaults when trying to write a block opened with
1010 PROT_READ.
Christian Heimesa156e092008-02-16 07:38:31 +00001011
Georg Brandl52b92cc2008-05-25 09:43:03 +00001012- Issue #2063: correct order of utime and stime in os.times() result
1013 on Windows.
Christian Heimes7131fd92008-02-19 14:21:46 +00001014
Christian Heimesbc873412007-12-08 22:11:32 +00001015Library
1016-------
1017
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001018- Weakref dictionaries now inherit from MutableMapping.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001019
Georg Brandl52b92cc2008-05-25 09:43:03 +00001020- Created new UserDict class in collections module. This one inherits
1021 from and complies with the MutableMapping ABC. Also, moved
1022 UserString and UserList to the collections module. The
1023 MutableUserString class was removed.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001024
Guido van Rossumea6775b2008-02-21 20:16:31 +00001025- Removed UserDict.DictMixin. Replaced all its uses with
1026 collections.MutableMapping.
Raymond Hettingeredf3b732008-02-04 22:07:15 +00001027
Guido van Rossume239b002008-01-06 00:44:20 +00001028- Issue #1703: getpass() should flush after writing prompt.
Christian Heimesfc5aa9d2007-12-11 09:00:01 +00001029
Guido van Rossume239b002008-01-06 00:44:20 +00001030- Issue #1585: IDLE uses non-existent xrange() function.
1031
1032- Issue #1578: Problems in win_getpass.
1033
Georg Brandl52d168a2008-01-07 18:10:24 +00001034Build
1035-----
1036
Georg Brandl52b92cc2008-05-25 09:43:03 +00001037- Renamed --enable-unicode configure flag to --with-wide-unicode,
1038 since Unicode strings can't be disabled anymore.
Georg Brandl52d168a2008-01-07 18:10:24 +00001039
Guido van Rossume239b002008-01-06 00:44:20 +00001040C API
1041-----
1042
1043- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
1044 Py_TYPE and Py_REFCNT.
1045
Georg Brandl52b92cc2008-05-25 09:43:03 +00001046- New API PyImport_ImportModuleNoBlock(), works like
1047 PyImport_ImportModule() but won't block on the import lock
1048 (returning an error instead).
Christian Heimes0ec88b32007-12-10 17:02:00 +00001049
Christian Heimesbc873412007-12-08 22:11:32 +00001050
Fred Drake0e474a82007-10-11 18:01:43 +00001051What's New in Python 3.0a2?
Christian Heimesbc873412007-12-08 22:11:32 +00001052===========================
Fred Drake0e474a82007-10-11 18:01:43 +00001053
Guido van Rossum99533a92007-12-06 05:07:41 +00001054*Release date: 07-Dec-2007*
1055
1056(Note: this list is incomplete.)
Fred Drake0e474a82007-10-11 18:01:43 +00001057
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001058Core and Builtins
1059-----------------
1060
Brett Cannon37f7e6e2007-10-26 05:42:09 +00001061- str8 now has the same construction signature as bytes.
1062
Georg Brandl52b92cc2008-05-25 09:43:03 +00001063- Comparisons between str and str8 now return False/True for ==/!=.
1064 sqlite3 returns str8 when recreating on object from it's __conform__
1065 value. The struct module returns str8 for all string-related
1066 formats. This was true before this change, but becomes more
1067 apparent thanks to string comparisons always being False.
Brett Cannon40430012007-10-22 20:24:51 +00001068
Georg Brandl52b92cc2008-05-25 09:43:03 +00001069- Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode,
1070 buffer, encoding, newline)`.
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001071
1072- Fixed `imp.find_module()` to obey the -*- coding: -*- header.
1073
1074- Changed `__file__` and `co_filename` to unicode. The path names are decoded
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +00001075 with `Py_FileSystemDefaultEncoding` and a new API method
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001076 `PyUnicode_DecodeFSDefault(char*)` was added.
1077
Georg Brandl52b92cc2008-05-25 09:43:03 +00001078- io.open() and _fileio.FileIO have grown a new argument closefd. A
1079 false value disables the closing of the file descriptor.
Guido van Rossum2dced8b2007-10-30 17:27:30 +00001080
Georg Brandl52b92cc2008-05-25 09:43:03 +00001081- Added a new option -b to issues warnings (-bb for errors) about
1082 certain operations between bytes/buffer and str like str(b'') and
1083 comparison.
Guido van Rossum98297ee2007-11-06 21:34:58 +00001084
Georg Brandl52b92cc2008-05-25 09:43:03 +00001085- The standards streams sys.stdin, stdout and stderr may be None when
1086 the when the C runtime library returns an invalid file descriptor
1087 for the streams (fileno(stdin) < 0). For now this happens only for
1088 Windows GUI apps and scripts started with `pythonw.exe`.
Christian Heimes58cb1b82007-11-13 02:19:40 +00001089
Christian Heimesbce52be2007-11-17 19:08:41 +00001090- Added PCbuild9 directory for VS 2008.
1091
Georg Brandl52b92cc2008-05-25 09:43:03 +00001092- Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to
1093 work around a name clash with VS 2008 on Windows.
Christian Heimesbce52be2007-11-17 19:08:41 +00001094
Georg Brandl52b92cc2008-05-25 09:43:03 +00001095- Unbound methods are gone for good. ClassObject.method returns an
1096 ordinary function object, instance.method still returns a bound
1097 method object. The API of bound methods is cleaned up, too. The
1098 im_class attribute is removed and im_func + im_self are renamed to
1099 __func__ and __self__. The factory PyMethod_New takes only func and
1100 instance as argument.
Christian Heimesff737952007-11-27 10:40:20 +00001101
Georg Brandl52b92cc2008-05-25 09:43:03 +00001102- intobject.h is no longer included by Python.h. The remains were
1103 moved to longobject.h. It still exists to define several aliases
1104 from PyInt_ to PyLong_ functions.
Christian Heimesf78b1c62007-12-02 16:52:32 +00001105
Christian Heimesa37d4c62007-12-04 23:02:19 +00001106- Removed sys.maxint, use sys.maxsize instead.
1107
Fred Drake0e474a82007-10-11 18:01:43 +00001108Extension Modules
1109-----------------
1110
1111- The `hotshot` profiler has been removed; use `cProfile` instead.
1112
Brett Cannone9fd2312007-10-12 19:18:19 +00001113Library
1114-------
1115
Georg Brandl52b92cc2008-05-25 09:43:03 +00001116- When loading an external file using testfile(), the passed-in
1117 encoding argument was being ignored if __loader__ is defined and
1118 forcing the source to be UTF-8.
Brett Cannone9fd2312007-10-12 19:18:19 +00001119
Georg Brandl52b92cc2008-05-25 09:43:03 +00001120- The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have
1121 been removed in favor of the tempfile module.
Guido van Rossum687b9c02007-10-25 23:18:51 +00001122
Christian Heimesc9543e42007-11-28 08:28:28 +00001123- Removed the 'new' module.
1124
Georg Brandl52b92cc2008-05-25 09:43:03 +00001125- Removed all types from the 'types' module that are easily accessable
1126 through builtins.
Brett Cannone9fd2312007-10-12 19:18:19 +00001127
Georg Brandl52d168a2008-01-07 18:10:24 +00001128
Guido van Rossum4405cf32007-08-30 17:16:55 +00001129What's New in Python 3.0a1?
Guido van Rossum45aecf42006-03-15 04:58:47 +00001130==========================
Thomas Wouters4d70c3d2006-06-08 14:42:34 +00001131
Guido van Rossum4405cf32007-08-30 17:16:55 +00001132*Release date: 31-Aug-2007*
Neal Norwitz4886cc32006-08-21 17:06:07 +00001133
1134Core and Builtins
1135-----------------
1136
Martin v. Löwis47383402007-08-15 07:32:56 +00001137- PEP 3131: Support non-ASCII identifiers.
1138
Martin v. Löwis447d33e2007-07-29 18:10:01 +00001139- PEP 3120: Change default encoding to UTF-8.
1140
Martin v. Löwis9f2e3462007-07-21 17:22:18 +00001141- PEP 3123: Use proper C inheritance for PyObject.
1142
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001143- Removed the __oct__ and __hex__ special methods and added a bin()
1144 builtin function.
1145
Georg Brandl52b92cc2008-05-25 09:43:03 +00001146- PEP 3127: octal literals now start with "0o". Old-style octal
1147 literals are invalid. There are binary literals with a prefix of
1148 "0b". This also affects int(x, 0).
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001149
Guido van Rossume7ba4952007-06-06 23:52:48 +00001150- None, True, False are now keywords.
1151
Guido van Rossum29478ef2007-05-29 00:39:44 +00001152- PEP 3119: isinstance() and issubclass() can be overridden.
1153
Guido van Rossumebe3e162007-05-17 18:20:34 +00001154- Remove BaseException.message.
1155
Guido van Rossum1bc535d2007-05-15 18:46:22 +00001156- Remove tuple parameter unpacking (PEP 3113).
1157
Georg Brandl52b92cc2008-05-25 09:43:03 +00001158- Remove the f_restricted attribute from frames. This naturally leads
1159 to the removal of PyEval_GetRestricted() and PyFrame_IsRestricted().
Guido van Rossuma8add0e2007-05-14 22:03:55 +00001160
Georg Brandl52b92cc2008-05-25 09:43:03 +00001161- PEP 3132 was accepted. That means that you can do ``a, *b =
1162 range(5)`` to assign 0 to a and [1, 2, 3, 4] to b.
Guido van Rossum0368b722007-05-11 16:50:42 +00001163
Georg Brandl52b92cc2008-05-25 09:43:03 +00001164- range() now returns an iterator rather than a list. Floats are not
1165 allowed. xrange() is no longer defined.
Guido van Rossum805365e2007-05-07 22:24:25 +00001166
Nick Coghlan650f0d02007-04-15 12:05:43 +00001167- Patch #1660500: hide iteration variable in list comps, add set comps
Georg Brandl52b92cc2008-05-25 09:43:03 +00001168 and use common code to handle compilation of iterative expressions.
Nick Coghlan650f0d02007-04-15 12:05:43 +00001169
Guido van Rossume27dc722007-03-27 22:37:34 +00001170- By default, != returns the opposite of ==, unless the latter returns
1171 NotImplemented.
1172
Georg Brandl52b92cc2008-05-25 09:43:03 +00001173- Patch #1680961: sys.exitfunc has been removed and replaced with a
1174 private C-level API.
Collin Winter670e6922007-03-21 02:57:17 +00001175
Georg Brandl801dd732007-03-18 20:18:31 +00001176- PEP 3115: new metaclasses: the metaclass is now specified as a
Georg Brandl52b92cc2008-05-25 09:43:03 +00001177 keyword arg in the class statement, which can now use the full
1178 syntax of a parameter list. Also, the metaclass can implement a
1179 __prepare__ function which will be called to create the dictionary
1180 for the new class namespace.
Georg Brandl801dd732007-03-18 20:18:31 +00001181
Georg Brandl428f0642007-03-18 18:35:15 +00001182- The long-deprecated argument "pend" of PyFloat_FromString() has been
1183 removed.
1184
Georg Brandle32b4222007-03-10 22:13:27 +00001185- The dir() function has been extended to call the __dir__() method on
Georg Brandl52b92cc2008-05-25 09:43:03 +00001186 its argument, if it exists. If not, it will work like before. This
1187 allows customizing the output of dir() in the presence of a
1188 __getattr__().
Brett Cannonba7bf492007-02-27 00:15:55 +00001189
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001190- Removed support for __members__ and __methods__.
1191
Georg Brandle32b4222007-03-10 22:13:27 +00001192- Removed indexing/slicing on BaseException.
Neal Norwitz2633c692007-02-26 22:22:47 +00001193
Georg Brandle32b4222007-03-10 22:13:27 +00001194- input() became raw_input(): the name input() now implements the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001195 functionality formerly known as raw_input(); the name raw_input() is
1196 no longer defined.
Guido van Rossum0240b922007-02-26 21:23:50 +00001197
Georg Brandl52b92cc2008-05-25 09:43:03 +00001198- Classes listed in an 'except' clause must inherit from
1199 BaseException.
Brett Cannonf74225d2007-02-26 21:10:16 +00001200
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001201- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
Guido van Rossumcf1be882007-08-30 22:07:17 +00001202 and .keys(), .items(), .values() return dict views, which behave
1203 like sets.
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001204
Guido van Rossum8b545362007-02-09 23:52:14 +00001205- PEP 3105: print is now a function. Also (not in the PEP) the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001206 'softspace' attribute of files is now gone (since print() doesn't
1207 use it). A side effect of this change is that you can get
1208 incomplete output lines in interactive sessions:
Guido van Rossum8b545362007-02-09 23:52:14 +00001209
1210 >>> print(42, end="")
Kurt B. Kaiser2c7f3142007-08-30 21:52:19 +00001211 42>>>
Guido van Rossum8b545362007-02-09 23:52:14 +00001212
1213 We may be able to fix this after the I/O library rewrite.
Guido van Rossum4502c802007-02-09 05:42:38 +00001214
Brett Cannon398db8b2007-01-29 23:44:37 +00001215- PEP 3102: keyword-only arguments.
1216
Georg Brandl52b92cc2008-05-25 09:43:03 +00001217- Int/Long unification is complete. The 'long' built-in type and
1218 literals with trailing 'L' or 'l' have been removed. Performance
1219 may be sub-optimal (haven't really benchmarked).
Guido van Rossumab186842007-01-14 03:42:30 +00001220
1221- 'except E, V' must now be spelled as 'except E as V' and deletes V
1222 at the end of the except clause; V must be a simple name.
1223
Neal Norwitzc1505362006-12-28 06:47:50 +00001224- Added function annotations per PEP 3107.
1225
Georg Brandl52b92cc2008-05-25 09:43:03 +00001226- Added nonlocal declaration from PEP 3104:
Jeremy Hyltona4f9fc62007-02-27 15:53:28 +00001227
1228 >>> def f(x):
1229 ... def inc():
1230 ... nonlocal x
1231 ... x += 1
1232 ... return x
1233 ... return inc
1234 ...
1235 >>> inc = f(0)
1236 >>> inc()
1237 1
1238 >>> inc()
1239 2
1240
Georg Brandl66a796e2006-12-19 20:50:34 +00001241- Moved intern() to sys.intern().
1242
1243- exec is now a function.
1244
1245- Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__.
Jack Diederich4dafcc42006-11-28 19:15:13 +00001246
Neal Norwitz4886cc32006-08-21 17:06:07 +00001247- Classic classes are a thing of the past. All classes are new style.
1248
1249- Exceptions *must* derive from BaseException.
1250
1251- Integer division always returns a float. The -Q option is no more.
1252 All the following are gone:
1253 * PyNumber_Divide and PyNumber_InPlaceDivide
1254 * __div__, __rdiv__, and __idiv__
1255 * nb_divide, nb_inplace_divide
1256 * operator.div, operator.idiv, operator.__div__, operator.__idiv__
1257 (Only __truediv__ and __floordiv__ remain, not sure how to handle them
1258 if we want to re-use __div__ and friends. If we do, it will make
1259 it harder to write code for both 2.x and 3.x.)
1260
1261- 'as' and 'with' are keywords.
1262
1263- Absolute import is the default behavior for 'import foo' etc.
1264
Georg Brandl52b92cc2008-05-25 09:43:03 +00001265- Removed support for syntax: backticks (ie, `x`), <>.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001266
Georg Brandl52b92cc2008-05-25 09:43:03 +00001267- Removed these Python builtins: apply(), callable(), coerce(),
1268 execfile(), file(), reduce(), reload().
Neal Norwitz4886cc32006-08-21 17:06:07 +00001269
Georg Brandl52b92cc2008-05-25 09:43:03 +00001270- Removed these Python methods: {}.has_key.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001271
Georg Brandl52b92cc2008-05-25 09:43:03 +00001272- Removed these opcodes: BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001273
1274- Remove C API support for restricted execution.
1275
Guido van Rossumcf1be882007-08-30 22:07:17 +00001276- zip(), map() and filter() now return iterators, behaving like their
Georg Brandl52b92cc2008-05-25 09:43:03 +00001277 itertools counterparts. This also affect map()'s behavior on
Guido van Rossumcf1be882007-08-30 22:07:17 +00001278 sequences of unequal length -- it now stops after the shortest one
1279 is exhausted.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001280
Georg Brandl52b92cc2008-05-25 09:43:03 +00001281- Additions: set literals, set comprehensions, ellipsis literal.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001282
1283- Added class decorators per PEP 3129.
1284
1285
1286Extension Modules
1287-----------------
1288
Georg Brandl52b92cc2008-05-25 09:43:03 +00001289- Removed the imageop module. Obsolete long with its unit tests
1290 becoming useless from the removal of rgbimg and imgfile.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001291
Georg Brandl52b92cc2008-05-25 09:43:03 +00001292- Removed these attributes from the operator module: div, idiv,
1293 __div__, __idiv__, isCallable, sequenceIncludes.
1294
1295- Removed these attributes from the sys module: exc_clear(), exc_type,
1296 exc_value, exc_traceback.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001297
1298
1299Library
1300-------
1301
Georg Brandl52b92cc2008-05-25 09:43:03 +00001302- Removed the compiler package. Use of the _ast module and (an
1303 eventual) AST -> bytecode mechanism.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001304
Georg Brandl52b92cc2008-05-25 09:43:03 +00001305- Removed these modules: audiodev, Bastion, bsddb185, exceptions,
1306 linuxaudiodev, md5, MimeWriter, mimify, popen2, rexec, sets, sha,
1307 stringold, strop, sunaudiodev, timing, xmllib.
Guido van Rossum33d26892007-08-05 15:29:28 +00001308
Georg Brandl52b92cc2008-05-25 09:43:03 +00001309- Moved the toaiff module to Tools/Demos.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001310
Georg Brandl52b92cc2008-05-25 09:43:03 +00001311- Removed obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL,
1312 DEVICE, ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile,
1313 IOCTL, jpeg, panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001314
Georg Brandl52b92cc2008-05-25 09:43:03 +00001315- Removed obsolete functions: commands.getstatus(), os.popen*().
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001316
Georg Brandl52b92cc2008-05-25 09:43:03 +00001317- Removed functions in the string module that are also string methods;
Martin v. Löwis967f1e32007-08-14 09:23:10 +00001318 Remove string.{letters, lowercase, uppercase}.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001319
Georg Brandl52b92cc2008-05-25 09:43:03 +00001320- Removed support for long obsolete platforms: plat-aix3, plat-irix5.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001321
Georg Brandl52b92cc2008-05-25 09:43:03 +00001322- Removed xmlrpclib.SlowParser. It was based on xmllib.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001323
1324- Patch #1680961: atexit has been reimplemented in C.
1325
Walter Dörwald41980ca2007-08-16 21:55:45 +00001326- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
1327
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001328Build
1329-----
1330
1331C API
1332-----
1333
Georg Brandl52b92cc2008-05-25 09:43:03 +00001334- Removed these Python slots: __coerce__, __div__, __idiv__, __rdiv__.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001335
Georg Brandl52b92cc2008-05-25 09:43:03 +00001336- Removed these C APIs: PyNumber_Coerce(), PyNumber_CoerceEx(),
1337 PyMember_Get, PyMember_Set.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001338
Georg Brandl52b92cc2008-05-25 09:43:03 +00001339- Removed these C slots/fields: nb_divide, nb_inplace_divide.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001340
Georg Brandl52b92cc2008-05-25 09:43:03 +00001341- Removed these macros: staticforward, statichere, PyArg_GetInt,
1342 PyArg_NoArgs, _PyObject_Del.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001343
Georg Brandl52b92cc2008-05-25 09:43:03 +00001344- Removed these typedefs: intargfunc, intintargfunc, intobjargproc,
1345 intintobjargproc, getreadbufferproc, getwritebufferproc,
1346 getsegcountproc, getcharbufferproc, memberlist.
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001347
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001348Tests
1349-----
1350
Brett Cannone7a30f72008-03-03 03:36:27 +00001351- Removed test.testall as test.regrtest replaces it.
1352
Brett Cannonced04e02005-02-13 22:53:22 +00001353Documentation
1354-------------
1355
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001356Mac
1357---
1358
Georg Brandl52b92cc2008-05-25 09:43:03 +00001359- The cfmfile module was removed.
Guido van Rossume7ba4952007-06-06 23:52:48 +00001360
Guido van Rossum845702c2007-08-30 18:44:53 +00001361Platforms
1362---------
1363
1364- Support for BeOS and AtheOS was removed (according to PEP 11).
1365
1366- Support for RiscOS, Irix, Tru64 was removed (alledgedly).
1367
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001368Tools/Demos
1369-----------
1370
Georg Brandl52b92cc2008-05-25 09:43:03 +00001371
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001372**(For information about older versions, consult the HISTORY file.)**