blob: bc127e70a1a841092ede6c20760e480248366da6 [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
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000022Library
23-------
24
Brett Cannon2b5d6eb2008-11-24 21:09:58 +000025- Issue #4382: dbm.dumb did not specify the expected file encoding for opened
26 files.
27
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +000028- Issue #4383: When IDLE cannot make the connection to its subprocess, it would
29 fail to properly display the error message.
30
Brett Cannon7317c1e2008-11-25 19:19:17 +000031Docs
32----
33
34- Issue #3799: Document that dbm.gnu and dbm.ndbm will accept string arguments
35 for keys and values which will be converted to bytes before committal.
36
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000037
38What's New in Python 3.0 release candidate 3?
39=============================================
Barry Warsawa7c37302008-11-07 03:46:33 +000040
Barry Warsaw43baef42008-11-21 01:18:21 +000041*Release date: 20-Nov-2008*
Barry Warsawa7c37302008-11-07 03:46:33 +000042
Benjamin Peterson6570d072008-11-07 03:51:42 +000043
Barry Warsawa7c37302008-11-07 03:46:33 +000044Core and Builtins
45-----------------
46
Benjamin Peterson4f39d222008-11-18 22:37:15 +000047- Issue #4349: sys.path included a non-existent platform directory because of a
48 faulty Makefile.
49
Martin v. Löwis276c3712008-11-17 16:22:11 +000050- Issue #3327: Don't overallocate in the modules_by_index list.
51
Raymond Hettinger7d99f092008-11-16 11:44:54 +000052- Issue #1721812: Binary set operations and copy() returned the input type
Brett Cannon58425d32008-11-21 00:17:53 +000053 instead of the appropriate base type. This was incorrect because set
Raymond Hettinger7d99f092008-11-16 11:44:54 +000054 subclasses would be created without their __init__() method being called.
55 The corrected behavior brings sets into line with lists and dicts.
56
Mark Dickinson4a1f5932008-11-12 23:23:36 +000057- Issue #4296: Fix PyObject_RichCompareBool so that "x in [x]" evaluates to
58 True, even when x doesn't compare equal to itself. This was a regression
59 from 2.6.
60
Amaury Forgeot d'Arc9a5499b2008-11-11 23:04:59 +000061- Issue #3705: Command-line arguments were not correctly decoded when the
62 terminal does not use UTF8.
63
Barry Warsawa7c37302008-11-07 03:46:33 +000064Library
65-------
66
Amaury Forgeot d'Arcb0c29162008-11-22 22:18:04 +000067- Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
68 the ctypes module is not present.
69
Benjamin Peterson44309e62008-11-22 00:41:45 +000070- FileIO's mode attribute now always includes ``"b"``.
71
Brett Cannon58425d32008-11-21 00:17:53 +000072- Issue #3799: Fix dbm.dumb to accept strings as well as bytes for keys. String
73 keys are now written out in UTF-8.
74
Amaury Forgeot d'Arc836b6702008-11-20 23:53:46 +000075- Issue #4338: Fix distutils upload command.
76
Martin v. Löwis2d1ca2d2008-11-20 16:21:55 +000077- Issue #4354: Fix distutils register command.
78
Martin v. Löwis22d297b2008-11-19 09:14:30 +000079- Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
80
Benjamin Peterson3d4ca742008-11-12 21:39:01 +000081- Issue #4307: The named tuple that ``inspect.getfullargspec()`` returns now
82 uses ``kwonlydefaults`` instead of ``kwdefaults``.
83
Amaury Forgeot d'Arc3e4e72f2008-11-11 20:05:06 +000084- Issue #4298: Fix a segfault when pickle.loads is passed a ill-formed input.
85
86- Issue #4283: Fix a left-over "iteritems" call in distutils.
Georg Brandlda066062008-11-08 15:15:57 +000087
Martin v. Löwisbfda5442008-11-07 18:54:51 +000088Build
89-----
90
Martin v. Löwisa632a752008-11-19 13:55:07 +000091- Issue #4289: Remove Cancel button from AdvancedDlg.
92
Martin v. Löwisbfda5442008-11-07 18:54:51 +000093- Issue #1656675: Register a drop handler for .py* files on Windows.
94
Benjamin Peterson06fd5f82008-11-08 17:24:34 +000095Tools/Demos
96-----------
97
98- Demos of the socketserver module now work with Python 3.
99
Barry Warsawa7c37302008-11-07 03:46:33 +0000100
Barry Warsaw1f0e67e2008-11-06 03:29:32 +0000101What's New in Python 3.0 release candidate 2
102============================================
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000103
Barry Warsaw1f0e67e2008-11-06 03:29:32 +0000104*Release date: 05-Nov-2008*
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000105
106Core and Builtins
107-----------------
108
Benjamin Petersond968e272008-11-05 22:48:33 +0000109- Issue #4211: The __path__ attribute of frozen packages is now a list instead
110 of a string as required by PEP 302.
111
Benjamin Peterson93ef79c2008-11-05 22:49:09 +0000112- Issue #3727: Fixed poplib.
Christian Heimesd3956292008-11-05 19:48:27 +0000113
Christian Heimes933238a2008-11-05 19:44:21 +0000114- Issue #3714: Fixed nntplib by using bytes where appropriate.
115
Christian Heimesfb5faf02008-11-05 19:39:50 +0000116- Issue #1210: Fixed imaplib and its documentation.
117
Christian Heimesecc42a22008-11-05 19:30:32 +0000118- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
119 method on file objects with closefd=False. The file descriptor is still
120 kept open but the file object behaves like a closed file. The ``FileIO``
121 object also got a new readonly attribute ``closefd``.
122
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000123- Issue #3626: On cygwin, starting python with a non-existent script name
124 would not display anything if the file name is only 1 character long.
125
Amaury Forgeot d'Arc424b4812008-10-30 22:25:31 +0000126- Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
127 method does not return iterators for the 4th and 5th items.
128
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000129- Issue #3723: Fixed initialization of subinterpreters.
Christian Heimes6a27efa2008-10-30 21:48:26 +0000130
Christian Heimes5833a2f2008-10-30 21:40:04 +0000131- Issue #4213: The file system encoding is now normalized by the
132 codec subsystem, for example UTF-8 is turned into utf-8.
133
Christian Heimes9c94ba42008-10-30 21:34:02 +0000134- Issue #4200: Changed the atexit module to store its state in its
135 PyModuleDef atexitmodule. This fixes a bug with multiple subinterpeters.
136
Christian Heimesfec925b2008-10-30 21:22:55 +0000137- Issue #4237: io.FileIO() was raising invalid warnings caused by
138 insufficient initialization of PyFileIOObject struct members.
139
Amaury Forgeot d'Arcf43ee812008-10-30 20:58:42 +0000140- Issue #4170: Pickling a collections.defaultdict object would crash the
141 interpreter.
142
Benjamin Peterson08a8f5f2008-10-19 14:15:00 +0000143- Issue #4146: Compilation on OpenBSD has been restored.
144
Brett Cannonda780432008-10-17 03:38:50 +0000145- Issue #3574: compile() incorrectly handled source code encoded as Latin-1.
146
Amaury Forgeot d'Arccf8016a2008-10-09 23:37:48 +0000147- Issues #2384 and #3975: Tracebacks were not correctly printed when the
148 source file contains a ``coding:`` header: the wrong line was displayed, and
149 the encoding was not respected.
150
Martin v. Löwis4e0630c2008-10-07 13:16:28 +0000151- Issue #3740: Null-initialize module state.
152
Benjamin Peterson60320cb2008-09-26 21:49:22 +0000153- Issue #3946: PyObject_CheckReadBuffer crashed on a memoryview object.
154
Amaury Forgeot d'Arcd0db98f2008-09-21 21:49:01 +0000155- Issue #1688: On Windows, the input() prompt was not correctly displayed if it
156 contains non-ascii characters.
157
Martin v. Löwis6fea2332008-09-25 04:15:27 +0000158- Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
159
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000160Library
161-------
162
Amaury Forgeot d'Arc87eee632008-10-17 20:15:53 +0000163- Issue #3664: The pickle module could segfault if a subclass of Pickler fails
164 to call the base __init__ method.
165
166- Issue #3725: telnetlib now works completely in bytes.
Benjamin Peterson3de7fb82008-10-15 20:54:24 +0000167
Martin v. Löwis33b64502008-10-15 05:58:17 +0000168- Issue #4072: Restore build_py_2to3.
169
Martin v. Löwisd8506df2008-10-06 15:19:21 +0000170- Issue #4014: Don't claim that Python has an Alpha release status, in addition
171 to claiming it is Mature.
172
Martin v. Löwis04dc25c2008-10-03 16:09:28 +0000173- Issue #3187: Add sys.setfilesystemencoding.
174
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000175- Issue #3187: Better support for "undecodable" filenames. Code by Victor
176 Stinner, with small tweaks by GvR.
177
Martin v. Löwis601149b2008-09-29 22:19:08 +0000178- Issue #3965: Allow repeated calls to turtle.Screen, by making it a
179 true singleton object.
180
Benjamin Peterson3a53fbb2008-09-27 22:04:16 +0000181- Issue #3911: ftplib.FTP.makeport() could give invalid port numbers.
182
Amaury Forgeot d'Arcb5cf3012008-09-25 22:27:43 +0000183- Issue #3929: When the database cannot be opened, dbm.open() would incorrectly
184 raise a TypeError: "'tuple' object is not callable" instead of the expected
185 dbm.error.
186
Martin v. Löwis60ebb8b2008-09-21 07:32:10 +0000187- Bug #3884: Make the turtle module toplevel again.
188
Thomas Heller1308c262008-09-24 19:01:29 +0000189- Issue #3547: Fixed ctypes structures bitfields of varying integer
190 sizes.
191
Gerhard Häring6117f422008-09-22 06:04:51 +0000192Extension Modules
193-----------------
194
195- Issue #3659: Subclasses of str didn't work as SQL parameters.
196
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000197Build
198-----
199
Martin v. Löwis900646e2008-11-06 17:30:03 +0000200- Issue #4120: Exclude manifest from extension modules in VS2008.
201
Martin v. Löwisc820eaf2008-10-17 13:47:20 +0000202- Issue #4091: Install pythonxy.dll in system32 again.
203
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000204- Issue #4018: Disable "for me" installations on Vista.
205
Martin v. Löwisb37509b2008-11-04 20:45:29 +0000206- Issue #4204: Fixed module build errors on FreeBSD 4.
207
Martin v. Löwis33b64502008-10-15 05:58:17 +0000208Tools/Demos
209-----------
210
Martin v. Löwis869bad92008-10-17 15:54:44 +0000211- Issue #3717: Fix Demo/embed/demo.c.
212
Martin v. Löwis33b64502008-10-15 05:58:17 +0000213- Issue #4072: Add a distutils demo for build_py_2to3.
214
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000215
Barry Warsaw8509df72008-08-21 03:02:47 +0000216What's New in Python 3.0 release candidate 1
217============================================
218
Barry Warsawb8854802008-09-18 03:00:28 +0000219*Release date: 17-Sep-2008*
Barry Warsaw8509df72008-08-21 03:02:47 +0000220
221Core and Builtins
222-----------------
223
Benjamin Peterson5e19e442008-09-10 21:47:03 +0000224- Issue #3827: memoryview lost its size attribute in favor of using len(view).
225
Hirokazu Yamamoto167b12b2008-09-09 14:01:25 +0000226- Issue #3813: could not lanch python.exe via symbolic link on cygwin.
227
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000228- Issue #3705: fix crash when given a non-ascii value on the command line for
Amaury Forgeot d'Arc8530e852008-09-09 07:28:22 +0000229 the "-c" and "-m" parameters. Now the behaviour is as expected under Linux,
230 although under Windows it fails at a later point.
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000231
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000232- Issue #3279: Importing site at interpreter was failing silently because the
233 site module uses the open builtin which was not initialized at the time.
234
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000235- Issue #3660: Corrected a reference leak in str.encode() when the encoder
236 does not return a bytes object.
237
238- Issue #3774: Added a few more checks in PyTokenizer_FindEncoding to handle
Amaury Forgeot d'Arc1b933ed2008-09-04 22:34:09 +0000239 error conditions.
240
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000241- Issue #3594: Fix Parser/tokenizer.c:fp_setreadl() to open the file being
Brett Cannon8a9583e2008-09-04 05:04:25 +0000242 tokenized by either a file path or file pointer for the benefit of
243 PyTokenizer_FindEncoding().
244
Antoine Pitroufff95302008-09-03 18:58:51 +0000245- Issue #3696: Error parsing arguments on OpenBSD <= 4.4 and Cygwin. On
246 these systems, the mbstowcs() function is slightly buggy and must be
247 replaced with strlen() for the purpose of counting of number of wide
248 characters needed to represent the multi-byte character string.
249
Antoine Pitrou658fad82008-09-03 18:34:34 +0000250- Issue #3697: "Fatal Python error: Cannot recover from stack overflow"
251 could be easily encountered under Windows in debug mode when exercising
252 the recursion limit checking code, due to bogus handling of recursion
253 limit when USE_STACKCHEK was enabled.
254
Brett Cannon54bd41d2008-09-02 04:01:42 +0000255- Issue 3639: The _warnings module could segfault the interpreter when
256 unexpected types were passed in as arguments.
257
Antoine Pitrouc6b09eb2008-09-01 15:10:14 +0000258- Issue #3712: The memoryview object had a reference leak and didn't support
259 cyclic garbage collection.
260
Antoine Pitrouf71995782008-08-29 18:37:05 +0000261- Issue #3668: Fix a memory leak with the "s*" argument parser in
262 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
263 was correctly parsed but parsing of subsequent arguments failed.
264
Amaury Forgeot d'Arcdb26f7c2008-08-29 07:13:32 +0000265- Issue #3611: An exception __context__ could be cleared in a complex pattern
266 involving a __del__ method re-raising an exception.
267
Antoine Pitrouec569b72008-08-26 22:40:48 +0000268- Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
269 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
270 mechanism. In the process, fix a bug where isinstance() and issubclass(),
271 when given a tuple of classes as second argument, were looking up
272 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
273 type object.
274
Antoine Pitroue2dffc02008-08-26 22:02:58 +0000275- Issue #3663: Py_None was decref'd when printing SyntaxErrors.
276
Benjamin Peterson9edd2bd2008-08-27 00:31:37 +0000277- Issue #3651: Fix various memory leaks when using the buffer
278 interface, or when the "s#" code of PyArg_ParseTuple is given a
279 bytes object.
280
Neal Norwitz6ae2eb22008-08-24 23:50:08 +0000281- Issue #3657: Fix uninitialized memory read when pickling longs.
282 Found by valgrind.
283
Neal Norwitz3ce5d922008-08-24 07:08:55 +0000284- Apply security patches from Apple.
285
Neal Norwitz2f99b242008-08-24 05:48:10 +0000286- Fix crashes on memory allocation failure found with failmalloc.
287
288- Fix memory leaks found with valgrind and update suppressions file.
289
290- Fix compiler warnings in opt mode which would lead to invalid memory reads.
291
292- Fix problem using wrong name in decimal module reported by pychecker.
293
Amaury Forgeot d'Arc20443f32008-08-22 22:05:20 +0000294- Issue #3650: Fixed a reference leak in bytes.split('x').
295
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000296- bytes(o) now tries to use o.__bytes__() before using fallbacks.
297
Gregory P. Smith207f2112008-09-07 06:29:10 +0000298- Issue #1204: The configure script now tests for additional libraries
299 that may be required when linking against readline. This fixes issues
300 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
301
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000302C API
303-----
304
305- PyObject_Bytes and PyBytes_FromObject were added.
306
Barry Warsaw8509df72008-08-21 03:02:47 +0000307Library
308-------
309
Guido van Rossum698280d2008-09-10 17:44:35 +0000310- Issue #3756: make re.escape() handle bytes as well as str.
311
Georg Brandl7cd67cc2008-09-09 19:31:25 +0000312- Issue #3800: fix filter() related bug in formatter.py.
313
Antoine Pitrou5fe291f2008-09-06 23:00:03 +0000314- Issue #874900: fix behaviour of threading module after a fork.
315
Antoine Pitrou9e4fdf42008-09-05 23:43:02 +0000316- Issue #3535: zipfile couldn't read some zip files larger than 2GB.
317
318- Issue #3776: Deprecate the bsddb package for removal in 3.0.
319
320- Issue #3762: platform.architecture() fails if python is lanched via
321 its symbolic link.
322
Antoine Pitroud79dc622008-09-05 00:03:33 +0000323- Issue #3660: fix a memory leak in the C accelerator of the pickle module.
324
Antoine Pitrou1d6a16b2008-09-04 21:32:09 +0000325- Issue #3160: the "bdist_wininst" distutils command didn't work.
326
Guilherme Polob212b752008-09-04 11:21:31 +0000327- Issue #1658: tkinter changes dict size during iteration in both
328 tkinter.BaseWidget and tkinter.scrolledtext.ScrolledText.
329
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000330- The bsddb module (and therefore the dbm.bsd module) has been removed.
Gregory P. Smith451e99b2008-09-04 04:46:48 +0000331 It is now maintained outside of the standard library at
332 http://www.jcea.es/programacion/pybsddb.htm.
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000333
Facundo Batistac469d4c2008-09-03 22:49:01 +0000334- Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
335 to the urlparse one. Added a DeprecationWarning in the old module, it
336 will be deprecated in the future.
337
Marc-André Lemburg7b2b1f92008-09-02 12:10:46 +0000338- Issue #3719: platform.architecture() fails if there are spaces in the
339 path to the Python binary.
340
Brett Cannonec92e182008-09-02 02:46:59 +0000341- Issue 3602: As part of the merge of r66135, make the parameters on
342 warnings.catch_warnings() keyword-only. Also remove a DeprecationWarning.
343
Benjamin Petersonb3085c92008-09-01 23:09:31 +0000344- The deprecation warnings for the camelCase threading API names were removed.
345
Jesse Noller338f5782008-09-03 18:22:19 +0000346- Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
347 SEM_VALUE_MAX.
348
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000349Extension Modules
350-----------------
351
Antoine Pitrou9cadb1b2008-09-15 23:02:56 +0000352- Issue #3782: os.write() must not accept unicode strings.
353
Amaury Forgeot d'Arcd8976f12008-09-02 23:22:56 +0000354- Issue #2975: When compiling several extension modules with Visual Studio 2008
355 from the same python interpreter, some environment variables would grow
356 without limit.
357
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000358- Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
359 exploitation of poor argument checking.
360
Jesus Cea6ba33292008-08-31 14:12:11 +0000361- bsddb code updated to version 4.7.3pre2. This code is the same than
362 Python 2.6 one, since the intention is to keep an unified 2.x/3.x codebase.
363 The Python code is automatically translated using "2to3". Please, do not
364 update this code in Python 3.0 by hand. Update the 2.6 one and then
365 do "2to3".
366
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000367- The _bytesio and _stringio modules are now compiled into the python binary.
368
Gregory P. Smith693fc462008-09-06 20:13:06 +0000369- Issue #3492 and #3790: Fixed the zlib module and zipimport module uses of
370 mutable bytearray objects where they should have been using immutable bytes.
371
Gregory P. Smith0a608fd2008-09-06 21:34:51 +0000372- Issue #3797: Fixed the dbm, marshal, mmap, ossaudiodev, & winreg modules to
373 return bytes objects instead of bytearray objects.
374
Gregory P. Smith693fc462008-09-06 20:13:06 +0000375
Neal Norwitz8f2f22a2008-08-24 20:59:23 +0000376Tools/Demos
377-----------
378
379- Fix Misc/gdbinit so it works.
380
Barry Warsaw8509df72008-08-21 03:02:47 +0000381
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000382Build
383-----
384
Hirokazu Yamamoto54a1cc62008-09-09 17:55:11 +0000385- Issue #3812: Failed to build python if configure --without-threads.
386
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000387- Issue #3791: Remove the bsddb module from the Windows installer, and the
388 core bsddb library from the Windows build files.
389
390
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000391What's new in Python 3.0b3?
392===========================
393
Barry Warsaw57c10582008-08-21 02:39:51 +0000394*Release date: 20-Aug-2008*
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000395
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000396Core and Builtins
397-----------------
398
Benjamin Petersonbc74e5b2008-08-23 20:19:17 +0000399- Issue #3653: Fix a segfault when sys.excepthook was called with invalid
400 arguments.
401
Antoine Pitrou616d2852008-08-19 22:09:34 +0000402- Issue #2394: implement more of the memoryview API, with the caveat that
403 only one-dimensional contiguous buffers are supported and exercised right
404 now. Slicing, slice assignment and comparison (equality and inequality)
405 have been added. Also, the tolist() method has been implemented, but only
406 for byte buffers. Endly, the API has been updated to return bytes objects
407 wherever it used to return bytearrays.
408
Antoine Pitrouee58fa42008-08-19 18:22:14 +0000409- Issue #3560: clean up the new C PyMemoryView API so that naming is
410 internally consistent; add macros PyMemoryView_GET_BASE() and
411 PyMemoryView_GET_BUFFER() to access useful properties of a memory views
412 without relying on a particular implementation; remove the ill-named
413 PyMemoryView() function (PyMemoryView_GET_BUFFER() can be used instead).
414
Thomas Hellerf5049fc2008-08-19 19:49:49 +0000415- ctypes function pointers that are COM methods have a boolean True
416 value again.
417
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000418- Issue #1819: function calls with several named parameters are now on
419 average 35% faster (as measured by pybench).
420
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000421- The undocumented C APIs PyUnicode_AsString() and
422 PyUnicode_AsStringAndSize() were made private to the interpreter, in
423 order to be able to refine their interfaces for Python 3.1.
424
425 If you need to access the UTF-8 representation of a Unicode object
426 as bytes string, please use PyUnicode_AsUTF8String() instead.
427
Antoine Pitrouaf14b792008-08-07 21:50:41 +0000428- Issue #3460: PyUnicode_Join() implementation is 10% to 80% faster thanks
429 to Python 3.0's stricter semantics which allow to avoid successive
430 reallocations of the result string (this also affects str.join()).
431
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000432
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000433Library
434-------
435
Hye-Shik Chang50d1f792008-08-23 08:03:03 +0000436- Issue #1276: Added temporary aliases for CJK Mac encodings to resolve
437 a build problem on MacOS with CJK locales. It adds four temporary
438 mappings to existing legacy codecs that are virtually compatible
439 with Mac encodings. They will be replaced by codecs correctly
440 implemented in 3.1.
441
Amaury Forgeot d'Arc41e36672008-08-20 21:35:50 +0000442- Issue #3614: Corrected a typo in xmlrpc.client, leading to a NameError
443 "global name 'header' is not defined".
444
Antoine Pitroufd036452008-08-19 17:56:33 +0000445- Issue #2834: update the regular expression library to match the unicode
446 standards of py3k. In other words, mixing bytes and unicode strings
447 (be it as pattern, search string or replacement string) raises a TypeError.
448 Moreover, the re.UNICODE flag is enabled automatically for unicode patterns,
449 and can be disabled by specifying a new re.ASCII flag; as for bytes
450 patterns, ASCII matching is the only option and trying to specify re.UNICODE
451 for such patterns raises a ValueError.
452
Guido van Rossum52dbbb92008-08-18 21:44:30 +0000453- Issue #3300: make urllib.parse.[un]quote() default to UTF-8.
454 Code contributed by Matt Giuca. quote() now encodes the input
455 before quoting, unquote() decodes after unquoting. There are
456 new arguments to change the encoding and errors settings.
457 There are also new APIs to skip the encode/decode steps.
458 [un]quote_plus() are also affected.
459
Nick Coghlan36f49522008-08-18 12:31:52 +0000460- Issue #2235: numbers.Number now blocks inheritance of the default id()
461 based hash because that hash mechanism is not correct for numeric types.
462 All concrete numeric types that inherit from Number (rather than just
463 registering with it) must explicitly provide a hash implementation in
464 order for their instances to be hashable.
465
Benjamin Peterson4cd6a952008-08-17 20:23:46 +0000466- Issue #2676: in the email package, content-type parsing was hanging on
467 pathological input because of quadratic or exponential behaviour of a
468 regular expression.
469
Antoine Pitrou87695762008-08-14 22:44:29 +0000470- Issue #3476: binary buffered reading through the new "io" library is now
471 thread-safe.
472
Robert Schuppenies3d1c7de2008-08-10 11:28:17 +0000473- Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
474 menu entries were not deleted.
475
Lars Gustäbel0c24e8b2008-08-02 11:43:24 +0000476- Remove the TarFileCompat class from tarfile.py.
477
Amaury Forgeot d'Arcbdbddf82008-08-01 00:06:49 +0000478- Issue #2491: os.fdopen is now almost an alias for the built-in open(), and
479 accepts the same parameters. It just checks that its first argument is an
480 integer.
481
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000482- Issue #3394: zipfile.writestr sets external attributes when passed a
483 file name rather than a ZipInfo instance, so files are extracted with
484 mode 0600 rather than 000 under Unix.
485
Antoine Pitrouc66f9092008-07-28 19:46:11 +0000486- Issue #2523: Fix quadratic behaviour when read()ing a binary file without
487 asking for a specific length.
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000488
Martin v. Löwis371bb502008-08-16 13:02:57 +0000489Extension Modules
490-----------------
491
492- Bug #3542: Support Unicode strings in _msi module.
493
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000494What's new in Python 3.0b2?
495===========================
496
Barry Warsaw4bd1cef2008-07-18 02:28:44 +0000497*Release date: 17-Jul-2008*
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000498
499Core and Builtins
500-----------------
501
Mark Dickinson65fe25e2008-07-16 11:30:51 +0000502- Issue #3008: the float type has a new instance method 'float.hex'
503 and a new class method 'float.fromhex' to convert floating-point
504 numbers to and from hexadecimal strings, respectively.
505
Eric Smithd68af8f2008-07-16 00:15:35 +0000506- Issue #3083: Add alternate (#) formatting for bin, oct, hex output
507 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
508
Amaury Forgeot d'Arca4db6862008-07-04 21:26:43 +0000509- Issue #3280: like chr(), the "%c" format now accepts unicode code points
510 beyond the Basic Multilingual Plane (above 0xffff) on all configurations. On
511 "narrow Unicode" builds, the result is a string of 2 code units, forming a
512 UTF-16 surrogate pair.
513
Georg Brandld52429f2008-07-04 15:55:02 +0000514- Issue #3282: str.isprintable() should return False for undefined
515 Unicode characters.
516
Martin v. Löwis029656f2008-06-30 04:06:08 +0000517- Issue #3236: Return small longs from PyLong_FromString.
518
Benjamin Petersone6528212008-07-15 15:32:09 +0000519- Exception tracebacks now support exception chaining.
520
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000521Library
522-------
523
Brett Cannonc2542e92008-07-25 18:19:20 +0000524- Removed the sunaudio module. Use sunau instead.
525
Thomas Heller47bc8092008-08-19 06:38:12 +0000526- Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
527 api functions without holding the GIL, which could lead to a fatal
528 error when they failed.
529
530- Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
531
Georg Brandl30704ea02008-07-23 15:07:12 +0000532- Removed "ast" function aliases from the parser module.
533
Thomas Heller15383a02008-07-15 19:46:52 +0000534- Issue #3313: Fixed a crash when a failed dlopen() call does not set
535 a valid dlerror() message.
536
Thomas Heller0261e1e2008-07-15 17:25:07 +0000537- Issue #3258: Fixed a crash when a ctypes POINTER type to an
538 incomplete structure was created.
539
Georg Brandl1abcbf82008-07-01 19:28:43 +0000540- Issue #2683: Fix inconsistency in subprocess.Popen.communicate(): the
541 argument now must be a bytes object in any case.
542
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000543- Issue #3145: help("modules whatever") failed when trying to load the source
544 code of every single module of the standard library, including invalid files
545 used in the test suite.
546
Georg Brandlbded4d32008-07-17 18:15:35 +0000547- The gettext library now consistently uses Unicode strings for message ids
548 and message strings, and ``ugettext()`` and the like don't exist anymore.
Benjamin Peterson801844d2008-07-14 14:32:15 +0000549
Benjamin Petersone6528212008-07-15 15:32:09 +0000550- The traceback module has been expanded to handle chained exceptions.
551
Amaury Forgeot d'Arc612f61f2008-07-02 23:02:21 +0000552C API
553-----
554
555- Issue #3247: the function Py_FindMethod was removed. Modern types should
556 use the tp_methods slot instead.
557
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000558Tools/Demos
559-----------
560
Georg Brandl336341f2008-07-01 20:21:28 +0000561- The Mac/Demos directory has been removed.
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000562
Georg Brandl336341f2008-07-01 20:21:28 +0000563- All of the Mac scripts have been removed (including BuildApplet.py).
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000564
565
Brett Cannon0d71ee72008-05-08 18:13:40 +0000566What's new in Python 3.0b1?
567===========================
568
Barry Warsawc1e689e2008-06-19 00:35:43 +0000569*Release date: 18-Jun-2008*
Brett Cannon0d71ee72008-05-08 18:13:40 +0000570
571Core and Builtins
572-----------------
573
Brett Cannondb734912008-06-27 00:52:15 +0000574- Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
575 argument being anything other than a dict or None. Also fixed a bug in error
576 handling when 'message' and 'category' were both set to None, triggering a
577 bus error.
578
Amaury Forgeot d'Arcc856c7a2008-06-16 19:50:09 +0000579- Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
580 holds the last (strong) reference to its referent.
581
Georg Brandl559e5d72008-06-11 18:37:52 +0000582- Issue #2630: implement PEP 3138. repr() now returns printable
583 Unicode characters unescaped, to get an ASCII-only representation
584 of an object use ascii().
585
Amaury Forgeot d'Arcf1ca0b12008-06-11 17:40:47 +0000586- Issue #1342: On windows, Python could not start when installed in a
587 directory with non-ascii characters.
588
Martin v. Löwis1a214512008-06-11 05:26:20 +0000589- Implement PEP 3121: new module initialization and finalization API.
590
Georg Brandle1b5ac62008-06-04 13:06:58 +0000591- Removed the already-defunct ``-t`` option.
592
Amaury Forgeot d'Arc74c71f52008-05-26 21:41:42 +0000593- Issue #2957: Corrected a ValueError "recursion limit exceeded", when
594 unmarshalling many code objects, which happens when importing a
595 large .pyc file (~1000 functions).
596
Georg Brandl52b92cc2008-05-25 09:43:03 +0000597- Issue #2963: fix merging oversight that disabled method cache for
598 all types.
Georg Brandl1bcf35a2008-05-25 09:32:09 +0000599
Georg Brandlc9b09532008-05-25 09:24:38 +0000600- Issue #2964: fix a missing INCREF in instancemethod_descr_get.
601
Georg Brandl52b92cc2008-05-25 09:43:03 +0000602- Issue #2895: Don't crash when given bytes objects as keyword names.
Georg Brandld8b690f2008-05-16 17:28:50 +0000603
Georg Brandl52b92cc2008-05-25 09:43:03 +0000604- Issue #2798: When parsing arguments with PyArg_ParseTuple, the "s"
605 code now allows any unicode string and returns a utf-8 encoded
606 buffer, just like the "s#" code already does. The "z" code was
607 corrected as well.
Amaury Forgeot d'Arc07404592008-05-12 13:19:07 +0000608
Georg Brandl52b92cc2008-05-25 09:43:03 +0000609- Issue #2863: generators now have a ``gen.__name__`` attribute that
610 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
611 ``func.func_code.co_name``. The repr() of a generator now also
612 contains this name.
Alexandre Vassalottie9f305f2008-05-16 04:39:54 +0000613
614- Issue #2831: enumerate() now has a ``start`` argument.
615
Georg Brandl52b92cc2008-05-25 09:43:03 +0000616- Issue #2801: fix bug in the float.is_integer method where a
617 ValueError was sometimes incorrectly raised.
Mark Dickinsonc4352b02008-05-09 13:55:01 +0000618
Georg Brandl52b92cc2008-05-25 09:43:03 +0000619- The ``--with-toolbox-glue`` option (and the associated
620 pymactoolbox.h) have been removed.
Benjamin Peterson79629ab2008-05-14 21:07:12 +0000621
Georg Brandl52b92cc2008-05-25 09:43:03 +0000622- Issue #2196: hasattr() now lets exceptions which do not inherit
623 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
624 ignoring them.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000625
Benjamin Petersoneec3d712008-06-11 15:59:43 +0000626- #3021 Exception reraising sematics have been significantly improved. However,
627 f_exc_type, f_exc_value, and f_exc_traceback cannot be accessed from Python
628 code anymore.
629
Benjamin Peterson4f92ca42008-06-11 20:21:57 +0000630- Three of PyNumberMethods' members, nb_coerce, nb_hex, and nb_oct, have been
631 removed.
632
Brett Cannon0d71ee72008-05-08 18:13:40 +0000633Extension Modules
634-----------------
635
Georg Brandl38feaf02008-05-25 07:45:51 +0000636- Renamed ``_winreg`` module to ``winreg``.
637
Georg Brandl52b92cc2008-05-25 09:43:03 +0000638- Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
639 platform.
Alexandre Vassalottibee32532008-05-16 18:15:12 +0000640
641- Support for Windows 9x has been removed from the winsound module.
642
Georg Brandl52b92cc2008-05-25 09:43:03 +0000643- Issue #2870: cmathmodule.c compile error.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000644
Brett Cannon0d71ee72008-05-08 18:13:40 +0000645Library
646-------
647
Benjamin Peterson87069fd2008-08-20 02:00:14 +0000648- The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
649 symtable.Symbol have been removed.
650
Amaury Forgeot d'Arccb0d2d72008-06-18 22:19:22 +0000651- Patch #3133: http.server.CGIHTTPRequestHandler did not work on windows.
652
Jeremy Hylton1afc1692008-06-18 20:49:58 +0000653- a new ``urllib`` package was created. It consists of code from
654 ``urllib``, ``urllib2``, ``urlparse``, and ``robotparser``. The old
655 modules have all been removed. The new package has five submodules:
656 ``urllib.parse``, ``urllib.request``, ``urllib.response``,
657 ``urllib.error``, and ``urllib.robotparser``. The
658 ``urllib.request.urlopen()`` function uses the url opener from
659 ``urllib2``. (Note that the unittests have not been renamed for the
660 beta, but they will be renamed in the future.)
661
Benjamin Petersona0c0a4a2008-06-12 22:15:50 +0000662- rfc822 has been removed in favor of the email package.
663
Benjamin Peterson425ea7f2008-06-12 14:11:35 +0000664- mimetools has been removed in favor of the email package.
Benjamin Peterson23c51a22008-06-12 14:06:57 +0000665
Barry Warsawf5019422008-06-12 02:42:00 +0000666- Patch #2849: Remove use of rfc822 module from standard library.
667
Alexandre Vassalotti794652d2008-06-11 22:58:36 +0000668- Added C optimized implementation of io.StringIO.
669
Alexandre Vassalottica2d6102008-06-12 18:26:05 +0000670- The ``pickle`` module is now automatically use an optimized C
671 implementation of Pickler and Unpickler when available. The
672 ``cPickle`` module is no longer needed.
673
Georg Brandl877b10a2008-06-01 21:25:55 +0000674- Removed the ``htmllib`` and ``sgmllib`` modules.
675
Georg Brandl61013952008-05-28 15:56:30 +0000676- The deprecated ``SmartCookie`` and ``SimpleCookie`` classes have
677 been removed from ``http.cookies``.
678
Brett Cannona23810f2008-05-26 19:04:21 +0000679- The ``commands`` module has been removed. Its getoutput() and
680 getstatusoutput() functions have been moved to the ``subprocess`` module.
681
Georg Brandl3d5c4252008-05-26 18:03:26 +0000682- The ``http`` package was created; it contains the old ``httplib``
683 as ``http.client``, ``Cookie`` as ``http.cookies``, ``cookielib``
684 as ``http.cookiejar``, and the content of the three ``HTTPServer``
685 modules as ``http.server``.
686
Georg Brandl38eceaa2008-05-26 11:14:17 +0000687- The ``xmlrpc`` package was created; it contains the old
688 ``xmlrpclib`` module as ``xmlrpc.client`` and the content of
689 the old ``SimpleXMLRPCServer`` and ``DocXMLRPCServer`` modules
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000690 as ``xmlrpc.server``.
Georg Brandl38eceaa2008-05-26 11:14:17 +0000691
692- The ``dbm`` package was created, containing the old modules
693 ``anydbm`` and ``whichdb`` in its ``__init__.py``, and having
694 ``dbm.gnu`` (was ``gdbm``), ``dbm.bsd`` (was ``dbhash``),
695 ``dbm.ndbm`` (was ``dbm``) and ``dbm.dumb`` (was ``dumbdbm``)
696 as submodules.
697
Georg Brandl52b92cc2008-05-25 09:43:03 +0000698- The ``repr`` module has been renamed to ``reprlib``.
Alexandre Vassalotti1f2ba4b2008-05-16 07:12:44 +0000699
Georg Brandl52b92cc2008-05-25 09:43:03 +0000700- The ``statvfs`` module has been removed.
Brett Cannonacbb7862008-05-16 00:42:57 +0000701
Georg Brandl52b92cc2008-05-25 09:43:03 +0000702- Issue #1713041: fix pprint's handling of maximum depth.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000703
Georg Brandl52b92cc2008-05-25 09:43:03 +0000704- Issue #2250: Exceptions raised during evaluation of names in
705 rlcompleter's ``Completer.complete()`` method are now caught and
706 ignored.
Alexandre Vassalotti8ae3e052008-05-16 00:41:41 +0000707
Georg Brandl52b92cc2008-05-25 09:43:03 +0000708- Patch #2659: Added ``break_on_hyphens`` option to textwrap's
709 ``TextWrapper`` class.
Alexandre Vassalotti1d1eaa42008-05-14 22:59:42 +0000710
Alexandre Vassalotti6461e102008-05-15 22:09:29 +0000711- Issue #2487: change the semantics of math.ldexp(x, n) when n is too
712 large to fit in a C long. ldexp(x, n) now returns a zero (with
713 suitable sign) if n is large and negative; previously, it raised
714 OverflowError.
715
Georg Brandl52b92cc2008-05-25 09:43:03 +0000716- The ``ConfigParser`` module has been renamed to ``configparser``.
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000717
Georg Brandl52b92cc2008-05-25 09:43:03 +0000718- Issue #2865: webbrowser.open() works again in a KDE environment.
Amaury Forgeot d'Arc2b2b44d2008-05-12 14:41:00 +0000719
Georg Brandl52b92cc2008-05-25 09:43:03 +0000720- The ``multifile`` module has been removed.
Brett Cannond3343cb2008-05-12 03:18:21 +0000721
Georg Brandl52b92cc2008-05-25 09:43:03 +0000722- The ``SocketServer`` module has been renamed to ``socketserver``.
Alexandre Vassalottice261952008-05-12 02:31:37 +0000723
Georg Brandl52b92cc2008-05-25 09:43:03 +0000724- Fixed the ``__all__`` setting on ``collections`` to include
725 ``UserList`` and ``UserString``.
Brett Cannon23a4a7b2008-05-12 00:56:28 +0000726
Brett Cannoncf3520c2008-05-11 22:47:58 +0000727- The sre module has been removed.
728
Alexandre Vassalottif260e442008-05-11 19:59:59 +0000729- The Queue module has been renamed to queue.
730
Alexandre Vassalottif7fa63d2008-05-11 08:55:36 +0000731- The copy_reg module has been renamed to copyreg.
732
Brett Cannond8b61ee2008-05-11 03:00:26 +0000733- The mhlib module has been removed.
734
Brett Cannonbd474422008-05-10 22:42:14 +0000735- The ihooks module has been removed.
736
Brett Cannonb59a2bd2008-05-10 22:03:16 +0000737- The fpformat module has been removed.
738
Brett Cannonf4fd9932008-05-10 21:11:46 +0000739- The dircache module has been removed.
740
Brett Cannond175b4c2008-05-10 03:19:54 +0000741- The Canvas module has been removed.
742
Mark Dickinsonb27406c2008-05-09 13:42:33 +0000743- The Decimal module gained the magic methods __round__, __ceil__,
744 __floor__ and __trunc__, to give support for round, math.ceil,
745 math.floor and math.trunc.
746
Brett Cannon900ee3a2008-05-08 20:31:11 +0000747- The user module has been removed.
748
Brett Cannon34afe872008-05-08 20:31:44 +0000749- The mutex module has been removed.
750
Brett Cannon0d71ee72008-05-08 18:13:40 +0000751- The imputil module has been removed.
752
Georg Brandl52b92cc2008-05-25 09:43:03 +0000753- os.path.walk has been removed in favor of os.walk.
Benjamin Petersond71ca412008-05-08 23:44:58 +0000754
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000755- pdb gained the "until" command.
756
Georg Brandl52b92cc2008-05-25 09:43:03 +0000757- The test.test_support module has been renamed to test.support.
Benjamin Petersonee8712c2008-05-20 21:35:26 +0000758
Georg Brandl32de7af2008-08-18 23:07:41 +0000759- The threading module API was renamed to be PEP 8 compliant. The
760 old names are still present, but will be removed in the near future.
Benjamin Peterson672b8032008-06-11 19:14:14 +0000761
Georg Brandl294d5a92008-06-01 19:25:32 +0000762Tools/Demos
763-----------
764
765- The bgen tool has been removed.
Benjamin Peterson630c8292008-06-01 18:50:38 +0000766
Brett Cannon0d71ee72008-05-08 18:13:40 +0000767Build
768-----
769
770
Barry Warsaw66079cd2008-04-04 01:36:36 +0000771What's New in Python 3.0a5?
772===========================
773
Barry Warsaw9eab8b02008-05-08 13:05:38 +0000774*Release date: 08-May-2008*
Barry Warsaw66079cd2008-04-04 01:36:36 +0000775
776Core and Builtins
777-----------------
778
Georg Brandl52b92cc2008-05-25 09:43:03 +0000779- Fixed misbehaviour of PyLong_FromSsize_t on systems where
780 sizeof(size_t) > sizeof(long).
Mark Dickinson7ab6be22008-04-15 21:42:42 +0000781
Georg Brandl52b92cc2008-05-25 09:43:03 +0000782- Issue #2221: Corrected a SystemError "error return without exception
783 set", when the code executed by exec() raises an exception, and
784 sys.stdout.flush() also raises an error.
Amaury Forgeot d'Arc7fedbe52008-04-10 21:03:09 +0000785
Georg Brandl52b92cc2008-05-25 09:43:03 +0000786- Bug #2565: The repr() of type objects now calls them 'class', not
787 'type' - whether they are builtin types or not.
Martin v. Löwis250ad612008-04-07 05:43:42 +0000788
Martin v. Löwis790465f2008-04-05 20:41:37 +0000789- The command line processing was converted to pass Unicode strings
790 through as unmodified as possible; as a consequence, the C API
791 related to command line arguments was changed to use wchar_t.
792
Georg Brandl52b92cc2008-05-25 09:43:03 +0000793- All backslashes in raw strings are interpreted literally. This
794 means that '\u' and '\U' escapes are not treated specially.
Benjamin Petersona2f837f2008-04-28 21:05:10 +0000795
Barry Warsaw66079cd2008-04-04 01:36:36 +0000796Extension Modules
797-----------------
798
799Library
800-------
801
Georg Brandl52b92cc2008-05-25 09:43:03 +0000802- ctypes objects now support the PEP3118 buffer interface.
Thomas Hellerb041fda2008-04-30 17:11:46 +0000803
Thomas Hellere106dc32008-04-24 18:39:36 +0000804- Issue #2682: ctypes callback functions now longer contain a cyclic
805 reference to themselves.
806
Georg Brandl52b92cc2008-05-25 09:43:03 +0000807- Issue #2058: Remove the buf attribute and add __slots__ to the
808 TarInfo class in order to reduce tarfile's memory usage.
Lars Gustäbelc2ea8c62008-04-14 10:05:48 +0000809
Martin v. Löwis8efc62c2008-04-10 19:02:25 +0000810- Bug #2606: Avoid calling .sort() on a dict_keys object.
811
Thomas Hellerbff533b2008-04-04 19:53:14 +0000812- The bundled libffi copy is now in sync with the recently released
813 libffi3.0.5 version, apart from some small changes to
814 Modules/_ctypes/libffi/configure.ac.
815
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000816Build
817-----
818
Mark Dickinsonb0e2b4c2008-04-26 20:48:56 +0000819- Issue #1496032: On alpha, use -mieee when gcc is the compiler.
820
Guido van Rossumdc21db32008-04-07 18:37:41 +0000821- "make install" is now an alias for "make altinstall", to prevent
Georg Brandl52b92cc2008-05-25 09:43:03 +0000822 accidentally overwriting a Python 2.x installation. Use "make
823 fullinstall" to force Python 3.0 to be installed as "python".
Guido van Rossumdc21db32008-04-07 18:37:41 +0000824
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000825- Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
826 gcc is used as compiler.
Barry Warsaw66079cd2008-04-04 01:36:36 +0000827
Georg Brandl52b92cc2008-05-25 09:43:03 +0000828
Barry Warsawa9d499d2008-03-01 18:38:07 +0000829What's New in Python 3.0a4?
830===========================
831
Barry Warsawbb5cd082008-04-02 23:33:27 +0000832*Release date: 02-Apr-2008*
Barry Warsawa9d499d2008-03-01 18:38:07 +0000833
Martin v. Löwis25931462008-03-17 20:43:42 +0000834Core and Builtins
835-----------------
836
837- Bug #2301: Don't try decoding the source code into the original
838 encoding for syntax errors.
839
Martin v. Löwis92fab752008-03-08 10:40:41 +0000840Extension Modules
841-----------------
842
Neal Norwitz6cf49cf2008-03-24 06:22:57 +0000843- The dl module was removed, use the ctypes module instead.
844
Martin v. Löwis92fab752008-03-08 10:40:41 +0000845- Use wchar_t functions in _locale module.
Barry Warsawa9d499d2008-03-01 18:38:07 +0000846
Martin v. Löwis071ef772008-03-08 11:24:24 +0000847Library
848-------
849
Georg Brandl52b92cc2008-05-25 09:43:03 +0000850- The class distutils.commands.build_py.build_py_2to3 can be used as a
851 build_py replacement to automatically run 2to3 on modules that are
852 going to be installed.
Martin v. Löwis73a22f02008-03-22 00:35:10 +0000853
Guido van Rossumf4169812008-03-17 22:56:06 +0000854- A new pickle protocol (protocol 3) is added with explicit support
855 for bytes. This is the default protocol. It intentionally cannot
856 be unpickled by Python 2.x.
857
858- When a pickle written by Python 2.x contains an (8-bit) str
859 instance, this is now decoded to a (Unicode) str instance. The
860 encoding used to do this defaults to ASCII, but can be overridden
861 via two new keyword arguments to the Unpickler class. Previously
862 this would create bytes instances, which is usually wrong: str
863 instances are often used to pickle attribute names etc., and text is
864 more common than binary data anyway.
865
Martin v. Löwis071ef772008-03-08 11:24:24 +0000866- Default to ASCII as the locale.getpreferredencoding, if the POSIX
Georg Brandl52b92cc2008-05-25 09:43:03 +0000867 system doesn't support CODESET and LANG isn't set or doesn't allow
868 deduction of an encoding.
Martin v. Löwis071ef772008-03-08 11:24:24 +0000869
Georg Brandl52b92cc2008-05-25 09:43:03 +0000870- Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned
871 value.
Gregory P. Smith425136b2008-03-17 20:45:21 +0000872
Georg Brandl52b92cc2008-05-25 09:43:03 +0000873- Issue #719888: Updated tokenize to use a bytes API. generate_tokens
874 has been renamed tokenize and now works with bytes rather than
875 strings. A new detect_encoding function has been added for
876 determining source file encoding according to PEP-0263. Token
877 sequences returned by tokenize always start with an ENCODING token
878 which specifies the encoding used to decode the file. This token is
879 used to encode the output of untokenize back to bytes.
880
Barry Warsawa9d499d2008-03-01 18:38:07 +0000881
Christian Heimesbc873412007-12-08 22:11:32 +0000882What's New in Python 3.0a3?
883===========================
884
Barry Warsaw659fc422008-03-01 17:45:23 +0000885*Release date: 29-Feb-2008*
Christian Heimesbc873412007-12-08 22:11:32 +0000886
887Core and Builtins
888-----------------
889
Georg Brandl52b92cc2008-05-25 09:43:03 +0000890- Issue #2282: io.TextIOWrapper was not overriding seekable() from
891 io.IOBase.
Ka-Ping Yeeddaa7062008-03-17 20:35:15 +0000892
Georg Brandl52b92cc2008-05-25 09:43:03 +0000893- Issue #2115: Important speedup in setting __slot__ attributes. Also
894 prevent a possible crash: an Abstract Base Class would try to access
895 a slot on a registered virtual subclass.
Christian Heimesa156e092008-02-16 07:38:31 +0000896
Georg Brandl52b92cc2008-05-25 09:43:03 +0000897- Fixed repr() and str() of complex numbers with infinity or nan as
898 real or imaginary part.
Christian Heimesa156e092008-02-16 07:38:31 +0000899
Georg Brandl52b92cc2008-05-25 09:43:03 +0000900- Clear all free list during a gc.collect() of the highest generation
901 in order to allow pymalloc to free more arenas. Python may give back
902 memory to the OS earlier.
Christian Heimesa156e092008-02-16 07:38:31 +0000903
Georg Brandl52b92cc2008-05-25 09:43:03 +0000904- Issue #2045: Fix an infinite recursion triggered when printing a
905 subclass of collections.defaultdict, if its default_factory is set
906 to a bound method.
Christian Heimesa156e092008-02-16 07:38:31 +0000907
908- Fixed a minor memory leak in dictobject.c. The content of the free
909 list was not freed on interpreter shutdown.
910
Georg Brandl52b92cc2008-05-25 09:43:03 +0000911- Limit free list of method and builtin function objects to 256
912 entries each.
Christian Heimesa156e092008-02-16 07:38:31 +0000913
Georg Brandl52b92cc2008-05-25 09:43:03 +0000914- Patch #1953: Added ``sys._compact_freelists()`` and the C API
915 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
Christian Heimesa156e092008-02-16 07:38:31 +0000916 to compact the internal free lists of pre-allocted ints and floats.
917
918- Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls.
Georg Brandl52b92cc2008-05-25 09:43:03 +0000919 Python expected the return type int but the fork familie returns
920 pi_t.
Christian Heimesa156e092008-02-16 07:38:31 +0000921
Georg Brandl52b92cc2008-05-25 09:43:03 +0000922- Issue #1678380: Fix a bug that identifies 0j and -0j when they
923 appear in the same code unit.
Christian Heimesa156e092008-02-16 07:38:31 +0000924
Georg Brandl52b92cc2008-05-25 09:43:03 +0000925- Issue #2025: Added tuple.count() and tuple.index() methods to comply
926 with the collections.Sequence API.
Raymond Hettinger65baa342008-02-07 00:41:02 +0000927
Georg Brandl52b92cc2008-05-25 09:43:03 +0000928- Fixed multiple reinitialization of the Python interpreter. The small
929 int list in longobject.c has caused a seg fault during the third
930 finalization.
Christian Heimesdfc12ed2008-01-31 15:16:38 +0000931
Georg Brandl52b92cc2008-05-25 09:43:03 +0000932- Issue #1973: bytes.fromhex('') raised SystemError.
Christian Heimesc04dac02008-01-30 11:27:57 +0000933
Georg Brandl52b92cc2008-05-25 09:43:03 +0000934- Issue #1771: remove cmp parameter from sorted() and list.sort().
Raymond Hettinger70b64fc2008-01-30 20:15:17 +0000935
Georg Brandl52b92cc2008-05-25 09:43:03 +0000936- Issue #1969: split and rsplit in bytearray are inconsistent.
Christian Heimes7b876152008-01-30 09:51:48 +0000937
Georg Brandl52b92cc2008-05-25 09:43:03 +0000938- map() no longer accepts None for the first argument. Use zip()
939 instead.
Raymond Hettinger1dfde1d2008-01-22 23:25:35 +0000940
Facundo Batista2336bdd2008-01-19 19:12:01 +0000941- Issue #1769: Now int("- 1") is not allowed any more.
942
Georg Brandl52b92cc2008-05-25 09:43:03 +0000943- Object/longobject.c: long(float('nan')) raises an OverflowError
944 instead of returning 0.
Christian Heimes386cd1e2008-01-15 02:01:20 +0000945
Georg Brandl52b92cc2008-05-25 09:43:03 +0000946- Issue #1762972: __file__ points to the source file instead of the
947 pyc/pyo file if the py file exists.
Christian Heimes3b06e532008-01-07 20:12:44 +0000948
Guido van Rossumab078dd2008-01-06 00:09:11 +0000949- Issue #1393: object_richcompare() returns NotImplemented instead of
950 False if the objects aren't equal, to give the other side a chance.
951
Guido van Rossume239b002008-01-06 00:44:20 +0000952- Issue #1692: Interpreter was not displaying location of SyntaxError.
Kurt B. Kaiser43b15092008-01-05 04:32:22 +0000953
Georg Brandl52b92cc2008-05-25 09:43:03 +0000954- Improve some exception messages when Windows fails to load an
955 extension module. Now we get for example '%1 is not a valid Win32
956 application' instead of 'error code 193'. Also use Unicode strings
957 to deal with non-English locales.
Amaury Forgeot d'Arcbccd63c2008-01-04 01:21:27 +0000958
Georg Brandl52b92cc2008-05-25 09:43:03 +0000959- Issue #1587: Added instancemethod wrapper for PyCFunctions. The
960 Python C API has gained a new type *PyInstanceMethod_Type* and the
961 functions *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)*
962 and *PyInstanceMethod_Function(im)*.
Christian Heimesa3534a62007-12-11 19:56:40 +0000963
Georg Brandl52b92cc2008-05-25 09:43:03 +0000964- Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed
965 from the gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE
966 are now enough to print the corresponding list of objects considered
967 by the garbage collector.
Amaury Forgeot d'Arcad8dcd52007-12-10 23:58:35 +0000968
Georg Brandl52b92cc2008-05-25 09:43:03 +0000969- Issue #1573: Improper use of the keyword-only syntax makes the
970 parser crash.
Christian Heimesbc873412007-12-08 22:11:32 +0000971
Georg Brandl52b92cc2008-05-25 09:43:03 +0000972- Issue #1564: The set implementation should special-case PyUnicode
973 instead of PyString.
Christian Heimes0ded5b52007-12-10 15:50:56 +0000974
Guido van Rossumea6775b2008-02-21 20:16:31 +0000975- Patch #1031213: Decode source line in SyntaxErrors back to its
976 original source encoding.
Christian Heimes7131fd92008-02-19 14:21:46 +0000977
Christian Heimes09aaa882008-02-23 15:01:06 +0000978- inspect.getsource() includes the decorators again.
979
Guido van Rossumea6775b2008-02-21 20:16:31 +0000980- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a
981 mountpoint.
Christian Heimes7131fd92008-02-19 14:21:46 +0000982
Georg Brandl52b92cc2008-05-25 09:43:03 +0000983- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
984 the first chunk fed to the decoder started with a BOM, but was
985 longer than 3 bytes.
Christian Heimes7131fd92008-02-19 14:21:46 +0000986
Christian Heimesbc873412007-12-08 22:11:32 +0000987Extension Modules
988-----------------
989
Georg Brandl52b92cc2008-05-25 09:43:03 +0000990- Code for itertools ifilter(), imap(), and izip() moved to bultins
991 and renamed to filter(), map(), and zip(). Also, renamed
992 izip_longest() to zip_longest() and ifilterfalse() to filterfalse().
Raymond Hettinger736c0ab2008-03-13 02:09:15 +0000993
Georg Brandl52b92cc2008-05-25 09:43:03 +0000994- Issue #1762972: Readded the reload() function as imp.reload().
Guido van Rossumea6775b2008-02-21 20:16:31 +0000995
Georg Brandl52b92cc2008-05-25 09:43:03 +0000996- Bug #2111: mmap segfaults when trying to write a block opened with
997 PROT_READ.
Christian Heimesa156e092008-02-16 07:38:31 +0000998
Georg Brandl52b92cc2008-05-25 09:43:03 +0000999- Issue #2063: correct order of utime and stime in os.times() result
1000 on Windows.
Christian Heimes7131fd92008-02-19 14:21:46 +00001001
Christian Heimesbc873412007-12-08 22:11:32 +00001002Library
1003-------
1004
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001005- Weakref dictionaries now inherit from MutableMapping.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001006
Georg Brandl52b92cc2008-05-25 09:43:03 +00001007- Created new UserDict class in collections module. This one inherits
1008 from and complies with the MutableMapping ABC. Also, moved
1009 UserString and UserList to the collections module. The
1010 MutableUserString class was removed.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001011
Guido van Rossumea6775b2008-02-21 20:16:31 +00001012- Removed UserDict.DictMixin. Replaced all its uses with
1013 collections.MutableMapping.
Raymond Hettingeredf3b732008-02-04 22:07:15 +00001014
Guido van Rossume239b002008-01-06 00:44:20 +00001015- Issue #1703: getpass() should flush after writing prompt.
Christian Heimesfc5aa9d2007-12-11 09:00:01 +00001016
Guido van Rossume239b002008-01-06 00:44:20 +00001017- Issue #1585: IDLE uses non-existent xrange() function.
1018
1019- Issue #1578: Problems in win_getpass.
1020
Georg Brandl52d168a2008-01-07 18:10:24 +00001021Build
1022-----
1023
Georg Brandl52b92cc2008-05-25 09:43:03 +00001024- Renamed --enable-unicode configure flag to --with-wide-unicode,
1025 since Unicode strings can't be disabled anymore.
Georg Brandl52d168a2008-01-07 18:10:24 +00001026
Guido van Rossume239b002008-01-06 00:44:20 +00001027C API
1028-----
1029
1030- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
1031 Py_TYPE and Py_REFCNT.
1032
Georg Brandl52b92cc2008-05-25 09:43:03 +00001033- New API PyImport_ImportModuleNoBlock(), works like
1034 PyImport_ImportModule() but won't block on the import lock
1035 (returning an error instead).
Christian Heimes0ec88b32007-12-10 17:02:00 +00001036
Christian Heimesbc873412007-12-08 22:11:32 +00001037
Fred Drake0e474a82007-10-11 18:01:43 +00001038What's New in Python 3.0a2?
Christian Heimesbc873412007-12-08 22:11:32 +00001039===========================
Fred Drake0e474a82007-10-11 18:01:43 +00001040
Guido van Rossum99533a92007-12-06 05:07:41 +00001041*Release date: 07-Dec-2007*
1042
1043(Note: this list is incomplete.)
Fred Drake0e474a82007-10-11 18:01:43 +00001044
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001045Core and Builtins
1046-----------------
1047
Brett Cannon37f7e6e2007-10-26 05:42:09 +00001048- str8 now has the same construction signature as bytes.
1049
Georg Brandl52b92cc2008-05-25 09:43:03 +00001050- Comparisons between str and str8 now return False/True for ==/!=.
1051 sqlite3 returns str8 when recreating on object from it's __conform__
1052 value. The struct module returns str8 for all string-related
1053 formats. This was true before this change, but becomes more
1054 apparent thanks to string comparisons always being False.
Brett Cannon40430012007-10-22 20:24:51 +00001055
Georg Brandl52b92cc2008-05-25 09:43:03 +00001056- Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode,
1057 buffer, encoding, newline)`.
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001058
1059- Fixed `imp.find_module()` to obey the -*- coding: -*- header.
1060
1061- Changed `__file__` and `co_filename` to unicode. The path names are decoded
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +00001062 with `Py_FileSystemDefaultEncoding` and a new API method
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001063 `PyUnicode_DecodeFSDefault(char*)` was added.
1064
Georg Brandl52b92cc2008-05-25 09:43:03 +00001065- io.open() and _fileio.FileIO have grown a new argument closefd. A
1066 false value disables the closing of the file descriptor.
Guido van Rossum2dced8b2007-10-30 17:27:30 +00001067
Georg Brandl52b92cc2008-05-25 09:43:03 +00001068- Added a new option -b to issues warnings (-bb for errors) about
1069 certain operations between bytes/buffer and str like str(b'') and
1070 comparison.
Guido van Rossum98297ee2007-11-06 21:34:58 +00001071
Georg Brandl52b92cc2008-05-25 09:43:03 +00001072- The standards streams sys.stdin, stdout and stderr may be None when
1073 the when the C runtime library returns an invalid file descriptor
1074 for the streams (fileno(stdin) < 0). For now this happens only for
1075 Windows GUI apps and scripts started with `pythonw.exe`.
Christian Heimes58cb1b82007-11-13 02:19:40 +00001076
Christian Heimesbce52be2007-11-17 19:08:41 +00001077- Added PCbuild9 directory for VS 2008.
1078
Georg Brandl52b92cc2008-05-25 09:43:03 +00001079- Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to
1080 work around a name clash with VS 2008 on Windows.
Christian Heimesbce52be2007-11-17 19:08:41 +00001081
Georg Brandl52b92cc2008-05-25 09:43:03 +00001082- Unbound methods are gone for good. ClassObject.method returns an
1083 ordinary function object, instance.method still returns a bound
1084 method object. The API of bound methods is cleaned up, too. The
1085 im_class attribute is removed and im_func + im_self are renamed to
1086 __func__ and __self__. The factory PyMethod_New takes only func and
1087 instance as argument.
Christian Heimesff737952007-11-27 10:40:20 +00001088
Georg Brandl52b92cc2008-05-25 09:43:03 +00001089- intobject.h is no longer included by Python.h. The remains were
1090 moved to longobject.h. It still exists to define several aliases
1091 from PyInt_ to PyLong_ functions.
Christian Heimesf78b1c62007-12-02 16:52:32 +00001092
Christian Heimesa37d4c62007-12-04 23:02:19 +00001093- Removed sys.maxint, use sys.maxsize instead.
1094
Fred Drake0e474a82007-10-11 18:01:43 +00001095Extension Modules
1096-----------------
1097
1098- The `hotshot` profiler has been removed; use `cProfile` instead.
1099
Brett Cannone9fd2312007-10-12 19:18:19 +00001100Library
1101-------
1102
Georg Brandl52b92cc2008-05-25 09:43:03 +00001103- When loading an external file using testfile(), the passed-in
1104 encoding argument was being ignored if __loader__ is defined and
1105 forcing the source to be UTF-8.
Brett Cannone9fd2312007-10-12 19:18:19 +00001106
Georg Brandl52b92cc2008-05-25 09:43:03 +00001107- The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have
1108 been removed in favor of the tempfile module.
Guido van Rossum687b9c02007-10-25 23:18:51 +00001109
Christian Heimesc9543e42007-11-28 08:28:28 +00001110- Removed the 'new' module.
1111
Georg Brandl52b92cc2008-05-25 09:43:03 +00001112- Removed all types from the 'types' module that are easily accessable
1113 through builtins.
Brett Cannone9fd2312007-10-12 19:18:19 +00001114
Georg Brandl52d168a2008-01-07 18:10:24 +00001115
Guido van Rossum4405cf32007-08-30 17:16:55 +00001116What's New in Python 3.0a1?
Guido van Rossum45aecf42006-03-15 04:58:47 +00001117==========================
Thomas Wouters4d70c3d2006-06-08 14:42:34 +00001118
Guido van Rossum4405cf32007-08-30 17:16:55 +00001119*Release date: 31-Aug-2007*
Neal Norwitz4886cc32006-08-21 17:06:07 +00001120
1121Core and Builtins
1122-----------------
1123
Martin v. Löwis47383402007-08-15 07:32:56 +00001124- PEP 3131: Support non-ASCII identifiers.
1125
Martin v. Löwis447d33e2007-07-29 18:10:01 +00001126- PEP 3120: Change default encoding to UTF-8.
1127
Martin v. Löwis9f2e3462007-07-21 17:22:18 +00001128- PEP 3123: Use proper C inheritance for PyObject.
1129
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001130- Removed the __oct__ and __hex__ special methods and added a bin()
1131 builtin function.
1132
Georg Brandl52b92cc2008-05-25 09:43:03 +00001133- PEP 3127: octal literals now start with "0o". Old-style octal
1134 literals are invalid. There are binary literals with a prefix of
1135 "0b". This also affects int(x, 0).
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001136
Guido van Rossume7ba4952007-06-06 23:52:48 +00001137- None, True, False are now keywords.
1138
Guido van Rossum29478ef2007-05-29 00:39:44 +00001139- PEP 3119: isinstance() and issubclass() can be overridden.
1140
Guido van Rossumebe3e162007-05-17 18:20:34 +00001141- Remove BaseException.message.
1142
Guido van Rossum1bc535d2007-05-15 18:46:22 +00001143- Remove tuple parameter unpacking (PEP 3113).
1144
Georg Brandl52b92cc2008-05-25 09:43:03 +00001145- Remove the f_restricted attribute from frames. This naturally leads
1146 to the removal of PyEval_GetRestricted() and PyFrame_IsRestricted().
Guido van Rossuma8add0e2007-05-14 22:03:55 +00001147
Georg Brandl52b92cc2008-05-25 09:43:03 +00001148- PEP 3132 was accepted. That means that you can do ``a, *b =
1149 range(5)`` to assign 0 to a and [1, 2, 3, 4] to b.
Guido van Rossum0368b722007-05-11 16:50:42 +00001150
Georg Brandl52b92cc2008-05-25 09:43:03 +00001151- range() now returns an iterator rather than a list. Floats are not
1152 allowed. xrange() is no longer defined.
Guido van Rossum805365e2007-05-07 22:24:25 +00001153
Nick Coghlan650f0d02007-04-15 12:05:43 +00001154- Patch #1660500: hide iteration variable in list comps, add set comps
Georg Brandl52b92cc2008-05-25 09:43:03 +00001155 and use common code to handle compilation of iterative expressions.
Nick Coghlan650f0d02007-04-15 12:05:43 +00001156
Guido van Rossume27dc722007-03-27 22:37:34 +00001157- By default, != returns the opposite of ==, unless the latter returns
1158 NotImplemented.
1159
Georg Brandl52b92cc2008-05-25 09:43:03 +00001160- Patch #1680961: sys.exitfunc has been removed and replaced with a
1161 private C-level API.
Collin Winter670e6922007-03-21 02:57:17 +00001162
Georg Brandl801dd732007-03-18 20:18:31 +00001163- PEP 3115: new metaclasses: the metaclass is now specified as a
Georg Brandl52b92cc2008-05-25 09:43:03 +00001164 keyword arg in the class statement, which can now use the full
1165 syntax of a parameter list. Also, the metaclass can implement a
1166 __prepare__ function which will be called to create the dictionary
1167 for the new class namespace.
Georg Brandl801dd732007-03-18 20:18:31 +00001168
Georg Brandl428f0642007-03-18 18:35:15 +00001169- The long-deprecated argument "pend" of PyFloat_FromString() has been
1170 removed.
1171
Georg Brandle32b4222007-03-10 22:13:27 +00001172- The dir() function has been extended to call the __dir__() method on
Georg Brandl52b92cc2008-05-25 09:43:03 +00001173 its argument, if it exists. If not, it will work like before. This
1174 allows customizing the output of dir() in the presence of a
1175 __getattr__().
Brett Cannonba7bf492007-02-27 00:15:55 +00001176
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001177- Removed support for __members__ and __methods__.
1178
Georg Brandle32b4222007-03-10 22:13:27 +00001179- Removed indexing/slicing on BaseException.
Neal Norwitz2633c692007-02-26 22:22:47 +00001180
Georg Brandle32b4222007-03-10 22:13:27 +00001181- input() became raw_input(): the name input() now implements the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001182 functionality formerly known as raw_input(); the name raw_input() is
1183 no longer defined.
Guido van Rossum0240b922007-02-26 21:23:50 +00001184
Georg Brandl52b92cc2008-05-25 09:43:03 +00001185- Classes listed in an 'except' clause must inherit from
1186 BaseException.
Brett Cannonf74225d2007-02-26 21:10:16 +00001187
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001188- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
Guido van Rossumcf1be882007-08-30 22:07:17 +00001189 and .keys(), .items(), .values() return dict views, which behave
1190 like sets.
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001191
Guido van Rossum8b545362007-02-09 23:52:14 +00001192- PEP 3105: print is now a function. Also (not in the PEP) the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001193 'softspace' attribute of files is now gone (since print() doesn't
1194 use it). A side effect of this change is that you can get
1195 incomplete output lines in interactive sessions:
Guido van Rossum8b545362007-02-09 23:52:14 +00001196
1197 >>> print(42, end="")
Kurt B. Kaiser2c7f3142007-08-30 21:52:19 +00001198 42>>>
Guido van Rossum8b545362007-02-09 23:52:14 +00001199
1200 We may be able to fix this after the I/O library rewrite.
Guido van Rossum4502c802007-02-09 05:42:38 +00001201
Brett Cannon398db8b2007-01-29 23:44:37 +00001202- PEP 3102: keyword-only arguments.
1203
Georg Brandl52b92cc2008-05-25 09:43:03 +00001204- Int/Long unification is complete. The 'long' built-in type and
1205 literals with trailing 'L' or 'l' have been removed. Performance
1206 may be sub-optimal (haven't really benchmarked).
Guido van Rossumab186842007-01-14 03:42:30 +00001207
1208- 'except E, V' must now be spelled as 'except E as V' and deletes V
1209 at the end of the except clause; V must be a simple name.
1210
Neal Norwitzc1505362006-12-28 06:47:50 +00001211- Added function annotations per PEP 3107.
1212
Georg Brandl52b92cc2008-05-25 09:43:03 +00001213- Added nonlocal declaration from PEP 3104:
Jeremy Hyltona4f9fc62007-02-27 15:53:28 +00001214
1215 >>> def f(x):
1216 ... def inc():
1217 ... nonlocal x
1218 ... x += 1
1219 ... return x
1220 ... return inc
1221 ...
1222 >>> inc = f(0)
1223 >>> inc()
1224 1
1225 >>> inc()
1226 2
1227
Georg Brandl66a796e2006-12-19 20:50:34 +00001228- Moved intern() to sys.intern().
1229
1230- exec is now a function.
1231
1232- Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__.
Jack Diederich4dafcc42006-11-28 19:15:13 +00001233
Neal Norwitz4886cc32006-08-21 17:06:07 +00001234- Classic classes are a thing of the past. All classes are new style.
1235
1236- Exceptions *must* derive from BaseException.
1237
1238- Integer division always returns a float. The -Q option is no more.
1239 All the following are gone:
1240 * PyNumber_Divide and PyNumber_InPlaceDivide
1241 * __div__, __rdiv__, and __idiv__
1242 * nb_divide, nb_inplace_divide
1243 * operator.div, operator.idiv, operator.__div__, operator.__idiv__
1244 (Only __truediv__ and __floordiv__ remain, not sure how to handle them
1245 if we want to re-use __div__ and friends. If we do, it will make
1246 it harder to write code for both 2.x and 3.x.)
1247
1248- 'as' and 'with' are keywords.
1249
1250- Absolute import is the default behavior for 'import foo' etc.
1251
Georg Brandl52b92cc2008-05-25 09:43:03 +00001252- Removed support for syntax: backticks (ie, `x`), <>.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001253
Georg Brandl52b92cc2008-05-25 09:43:03 +00001254- Removed these Python builtins: apply(), callable(), coerce(),
1255 execfile(), file(), reduce(), reload().
Neal Norwitz4886cc32006-08-21 17:06:07 +00001256
Georg Brandl52b92cc2008-05-25 09:43:03 +00001257- Removed these Python methods: {}.has_key.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001258
Georg Brandl52b92cc2008-05-25 09:43:03 +00001259- Removed these opcodes: BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001260
1261- Remove C API support for restricted execution.
1262
Guido van Rossumcf1be882007-08-30 22:07:17 +00001263- zip(), map() and filter() now return iterators, behaving like their
Georg Brandl52b92cc2008-05-25 09:43:03 +00001264 itertools counterparts. This also affect map()'s behavior on
Guido van Rossumcf1be882007-08-30 22:07:17 +00001265 sequences of unequal length -- it now stops after the shortest one
1266 is exhausted.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001267
Georg Brandl52b92cc2008-05-25 09:43:03 +00001268- Additions: set literals, set comprehensions, ellipsis literal.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001269
1270- Added class decorators per PEP 3129.
1271
1272
1273Extension Modules
1274-----------------
1275
Georg Brandl52b92cc2008-05-25 09:43:03 +00001276- Removed the imageop module. Obsolete long with its unit tests
1277 becoming useless from the removal of rgbimg and imgfile.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001278
Georg Brandl52b92cc2008-05-25 09:43:03 +00001279- Removed these attributes from the operator module: div, idiv,
1280 __div__, __idiv__, isCallable, sequenceIncludes.
1281
1282- Removed these attributes from the sys module: exc_clear(), exc_type,
1283 exc_value, exc_traceback.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001284
1285
1286Library
1287-------
1288
Georg Brandl52b92cc2008-05-25 09:43:03 +00001289- Removed the compiler package. Use of the _ast module and (an
1290 eventual) AST -> bytecode mechanism.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001291
Georg Brandl52b92cc2008-05-25 09:43:03 +00001292- Removed these modules: audiodev, Bastion, bsddb185, exceptions,
1293 linuxaudiodev, md5, MimeWriter, mimify, popen2, rexec, sets, sha,
1294 stringold, strop, sunaudiodev, timing, xmllib.
Guido van Rossum33d26892007-08-05 15:29:28 +00001295
Georg Brandl52b92cc2008-05-25 09:43:03 +00001296- Moved the toaiff module to Tools/Demos.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001297
Georg Brandl52b92cc2008-05-25 09:43:03 +00001298- Removed obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL,
1299 DEVICE, ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile,
1300 IOCTL, jpeg, panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001301
Georg Brandl52b92cc2008-05-25 09:43:03 +00001302- Removed obsolete functions: commands.getstatus(), os.popen*().
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001303
Georg Brandl52b92cc2008-05-25 09:43:03 +00001304- Removed functions in the string module that are also string methods;
Martin v. Löwis967f1e32007-08-14 09:23:10 +00001305 Remove string.{letters, lowercase, uppercase}.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001306
Georg Brandl52b92cc2008-05-25 09:43:03 +00001307- Removed support for long obsolete platforms: plat-aix3, plat-irix5.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001308
Georg Brandl52b92cc2008-05-25 09:43:03 +00001309- Removed xmlrpclib.SlowParser. It was based on xmllib.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001310
1311- Patch #1680961: atexit has been reimplemented in C.
1312
Walter Dörwald41980ca2007-08-16 21:55:45 +00001313- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
1314
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001315Build
1316-----
1317
1318C API
1319-----
1320
Georg Brandl52b92cc2008-05-25 09:43:03 +00001321- Removed these Python slots: __coerce__, __div__, __idiv__, __rdiv__.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001322
Georg Brandl52b92cc2008-05-25 09:43:03 +00001323- Removed these C APIs: PyNumber_Coerce(), PyNumber_CoerceEx(),
1324 PyMember_Get, PyMember_Set.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001325
Georg Brandl52b92cc2008-05-25 09:43:03 +00001326- Removed these C slots/fields: nb_divide, nb_inplace_divide.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001327
Georg Brandl52b92cc2008-05-25 09:43:03 +00001328- Removed these macros: staticforward, statichere, PyArg_GetInt,
1329 PyArg_NoArgs, _PyObject_Del.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001330
Georg Brandl52b92cc2008-05-25 09:43:03 +00001331- Removed these typedefs: intargfunc, intintargfunc, intobjargproc,
1332 intintobjargproc, getreadbufferproc, getwritebufferproc,
1333 getsegcountproc, getcharbufferproc, memberlist.
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001334
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001335Tests
1336-----
1337
Brett Cannone7a30f72008-03-03 03:36:27 +00001338- Removed test.testall as test.regrtest replaces it.
1339
Brett Cannonced04e02005-02-13 22:53:22 +00001340Documentation
1341-------------
1342
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001343Mac
1344---
1345
Georg Brandl52b92cc2008-05-25 09:43:03 +00001346- The cfmfile module was removed.
Guido van Rossume7ba4952007-06-06 23:52:48 +00001347
Guido van Rossum845702c2007-08-30 18:44:53 +00001348Platforms
1349---------
1350
1351- Support for BeOS and AtheOS was removed (according to PEP 11).
1352
1353- Support for RiscOS, Irix, Tru64 was removed (alledgedly).
1354
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001355Tools/Demos
1356-----------
1357
Georg Brandl52b92cc2008-05-25 09:43:03 +00001358
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001359**(For information about older versions, consult the HISTORY file.)**