blob: 4e797b211d64d5628a26c1f0dabebacbf6624e6b [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
15Library
16-------
17
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +000018- Issue #4383: When IDLE cannot make the connection to its subprocess, it would
19 fail to properly display the error message.
20
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000021
22What's New in Python 3.0 release candidate 3?
23=============================================
Barry Warsawa7c37302008-11-07 03:46:33 +000024
Barry Warsaw43baef42008-11-21 01:18:21 +000025*Release date: 20-Nov-2008*
Barry Warsawa7c37302008-11-07 03:46:33 +000026
Benjamin Peterson6570d072008-11-07 03:51:42 +000027
Barry Warsawa7c37302008-11-07 03:46:33 +000028Core and Builtins
29-----------------
30
Benjamin Peterson4f39d222008-11-18 22:37:15 +000031- Issue #4349: sys.path included a non-existent platform directory because of a
32 faulty Makefile.
33
Martin v. Löwis276c3712008-11-17 16:22:11 +000034- Issue #3327: Don't overallocate in the modules_by_index list.
35
Raymond Hettinger7d99f092008-11-16 11:44:54 +000036- Issue #1721812: Binary set operations and copy() returned the input type
Brett Cannon58425d32008-11-21 00:17:53 +000037 instead of the appropriate base type. This was incorrect because set
Raymond Hettinger7d99f092008-11-16 11:44:54 +000038 subclasses would be created without their __init__() method being called.
39 The corrected behavior brings sets into line with lists and dicts.
40
Mark Dickinson4a1f5932008-11-12 23:23:36 +000041- Issue #4296: Fix PyObject_RichCompareBool so that "x in [x]" evaluates to
42 True, even when x doesn't compare equal to itself. This was a regression
43 from 2.6.
44
Amaury Forgeot d'Arc9a5499b2008-11-11 23:04:59 +000045- Issue #3705: Command-line arguments were not correctly decoded when the
46 terminal does not use UTF8.
47
Barry Warsawa7c37302008-11-07 03:46:33 +000048Library
49-------
50
Benjamin Peterson44309e62008-11-22 00:41:45 +000051- FileIO's mode attribute now always includes ``"b"``.
52
Brett Cannon58425d32008-11-21 00:17:53 +000053- Issue #3799: Fix dbm.dumb to accept strings as well as bytes for keys. String
54 keys are now written out in UTF-8.
55
Amaury Forgeot d'Arc836b6702008-11-20 23:53:46 +000056- Issue #4338: Fix distutils upload command.
57
Martin v. Löwis2d1ca2d2008-11-20 16:21:55 +000058- Issue #4354: Fix distutils register command.
59
Martin v. Löwis22d297b2008-11-19 09:14:30 +000060- Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
61
Benjamin Peterson3d4ca742008-11-12 21:39:01 +000062- Issue #4307: The named tuple that ``inspect.getfullargspec()`` returns now
63 uses ``kwonlydefaults`` instead of ``kwdefaults``.
64
Amaury Forgeot d'Arc3e4e72f2008-11-11 20:05:06 +000065- Issue #4298: Fix a segfault when pickle.loads is passed a ill-formed input.
66
67- Issue #4283: Fix a left-over "iteritems" call in distutils.
Georg Brandlda066062008-11-08 15:15:57 +000068
Martin v. Löwisbfda5442008-11-07 18:54:51 +000069Build
70-----
71
Martin v. Löwisa632a752008-11-19 13:55:07 +000072- Issue #4289: Remove Cancel button from AdvancedDlg.
73
Martin v. Löwisbfda5442008-11-07 18:54:51 +000074- Issue #1656675: Register a drop handler for .py* files on Windows.
75
Benjamin Peterson06fd5f82008-11-08 17:24:34 +000076Tools/Demos
77-----------
78
79- Demos of the socketserver module now work with Python 3.
80
Barry Warsawa7c37302008-11-07 03:46:33 +000081
Barry Warsaw1f0e67e2008-11-06 03:29:32 +000082What's New in Python 3.0 release candidate 2
83============================================
Guido van Rossumf0af3e32008-10-02 18:55:37 +000084
Barry Warsaw1f0e67e2008-11-06 03:29:32 +000085*Release date: 05-Nov-2008*
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +000086
87Core and Builtins
88-----------------
89
Benjamin Petersond968e272008-11-05 22:48:33 +000090- Issue #4211: The __path__ attribute of frozen packages is now a list instead
91 of a string as required by PEP 302.
92
Benjamin Peterson93ef79c2008-11-05 22:49:09 +000093- Issue #3727: Fixed poplib.
Christian Heimesd3956292008-11-05 19:48:27 +000094
Christian Heimes933238a2008-11-05 19:44:21 +000095- Issue #3714: Fixed nntplib by using bytes where appropriate.
96
Christian Heimesfb5faf02008-11-05 19:39:50 +000097- Issue #1210: Fixed imaplib and its documentation.
98
Christian Heimesecc42a22008-11-05 19:30:32 +000099- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
100 method on file objects with closefd=False. The file descriptor is still
101 kept open but the file object behaves like a closed file. The ``FileIO``
102 object also got a new readonly attribute ``closefd``.
103
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000104- Issue #3626: On cygwin, starting python with a non-existent script name
105 would not display anything if the file name is only 1 character long.
106
Amaury Forgeot d'Arc424b4812008-10-30 22:25:31 +0000107- Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
108 method does not return iterators for the 4th and 5th items.
109
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000110- Issue #3723: Fixed initialization of subinterpreters.
Christian Heimes6a27efa2008-10-30 21:48:26 +0000111
Christian Heimes5833a2f2008-10-30 21:40:04 +0000112- Issue #4213: The file system encoding is now normalized by the
113 codec subsystem, for example UTF-8 is turned into utf-8.
114
Christian Heimes9c94ba42008-10-30 21:34:02 +0000115- Issue #4200: Changed the atexit module to store its state in its
116 PyModuleDef atexitmodule. This fixes a bug with multiple subinterpeters.
117
Christian Heimesfec925b2008-10-30 21:22:55 +0000118- Issue #4237: io.FileIO() was raising invalid warnings caused by
119 insufficient initialization of PyFileIOObject struct members.
120
Amaury Forgeot d'Arcf43ee812008-10-30 20:58:42 +0000121- Issue #4170: Pickling a collections.defaultdict object would crash the
122 interpreter.
123
Benjamin Peterson08a8f5f2008-10-19 14:15:00 +0000124- Issue #4146: Compilation on OpenBSD has been restored.
125
Brett Cannonda780432008-10-17 03:38:50 +0000126- Issue #3574: compile() incorrectly handled source code encoded as Latin-1.
127
Amaury Forgeot d'Arccf8016a2008-10-09 23:37:48 +0000128- Issues #2384 and #3975: Tracebacks were not correctly printed when the
129 source file contains a ``coding:`` header: the wrong line was displayed, and
130 the encoding was not respected.
131
Martin v. Löwis4e0630c2008-10-07 13:16:28 +0000132- Issue #3740: Null-initialize module state.
133
Benjamin Peterson60320cb2008-09-26 21:49:22 +0000134- Issue #3946: PyObject_CheckReadBuffer crashed on a memoryview object.
135
Amaury Forgeot d'Arcd0db98f2008-09-21 21:49:01 +0000136- Issue #1688: On Windows, the input() prompt was not correctly displayed if it
137 contains non-ascii characters.
138
Martin v. Löwis6fea2332008-09-25 04:15:27 +0000139- Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
140
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000141Library
142-------
143
Amaury Forgeot d'Arc87eee632008-10-17 20:15:53 +0000144- Issue #3664: The pickle module could segfault if a subclass of Pickler fails
145 to call the base __init__ method.
146
147- Issue #3725: telnetlib now works completely in bytes.
Benjamin Peterson3de7fb82008-10-15 20:54:24 +0000148
Martin v. Löwis33b64502008-10-15 05:58:17 +0000149- Issue #4072: Restore build_py_2to3.
150
Martin v. Löwisd8506df2008-10-06 15:19:21 +0000151- Issue #4014: Don't claim that Python has an Alpha release status, in addition
152 to claiming it is Mature.
153
Martin v. Löwis04dc25c2008-10-03 16:09:28 +0000154- Issue #3187: Add sys.setfilesystemencoding.
155
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000156- Issue #3187: Better support for "undecodable" filenames. Code by Victor
157 Stinner, with small tweaks by GvR.
158
Martin v. Löwis601149b2008-09-29 22:19:08 +0000159- Issue #3965: Allow repeated calls to turtle.Screen, by making it a
160 true singleton object.
161
Benjamin Peterson3a53fbb2008-09-27 22:04:16 +0000162- Issue #3911: ftplib.FTP.makeport() could give invalid port numbers.
163
Amaury Forgeot d'Arcb5cf3012008-09-25 22:27:43 +0000164- Issue #3929: When the database cannot be opened, dbm.open() would incorrectly
165 raise a TypeError: "'tuple' object is not callable" instead of the expected
166 dbm.error.
167
Martin v. Löwis60ebb8b2008-09-21 07:32:10 +0000168- Bug #3884: Make the turtle module toplevel again.
169
Thomas Heller1308c262008-09-24 19:01:29 +0000170- Issue #3547: Fixed ctypes structures bitfields of varying integer
171 sizes.
172
Gerhard Häring6117f422008-09-22 06:04:51 +0000173Extension Modules
174-----------------
175
176- Issue #3659: Subclasses of str didn't work as SQL parameters.
177
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000178Build
179-----
180
Martin v. Löwis900646e2008-11-06 17:30:03 +0000181- Issue #4120: Exclude manifest from extension modules in VS2008.
182
Martin v. Löwisc820eaf2008-10-17 13:47:20 +0000183- Issue #4091: Install pythonxy.dll in system32 again.
184
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000185- Issue #4018: Disable "for me" installations on Vista.
186
Martin v. Löwisb37509b2008-11-04 20:45:29 +0000187- Issue #4204: Fixed module build errors on FreeBSD 4.
188
Martin v. Löwis33b64502008-10-15 05:58:17 +0000189Tools/Demos
190-----------
191
Martin v. Löwis869bad92008-10-17 15:54:44 +0000192- Issue #3717: Fix Demo/embed/demo.c.
193
Martin v. Löwis33b64502008-10-15 05:58:17 +0000194- Issue #4072: Add a distutils demo for build_py_2to3.
195
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000196
Barry Warsaw8509df72008-08-21 03:02:47 +0000197What's New in Python 3.0 release candidate 1
198============================================
199
Barry Warsawb8854802008-09-18 03:00:28 +0000200*Release date: 17-Sep-2008*
Barry Warsaw8509df72008-08-21 03:02:47 +0000201
202Core and Builtins
203-----------------
204
Benjamin Peterson5e19e442008-09-10 21:47:03 +0000205- Issue #3827: memoryview lost its size attribute in favor of using len(view).
206
Hirokazu Yamamoto167b12b2008-09-09 14:01:25 +0000207- Issue #3813: could not lanch python.exe via symbolic link on cygwin.
208
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000209- Issue #3705: fix crash when given a non-ascii value on the command line for
Amaury Forgeot d'Arc8530e852008-09-09 07:28:22 +0000210 the "-c" and "-m" parameters. Now the behaviour is as expected under Linux,
211 although under Windows it fails at a later point.
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000212
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000213- Issue #3279: Importing site at interpreter was failing silently because the
214 site module uses the open builtin which was not initialized at the time.
215
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000216- Issue #3660: Corrected a reference leak in str.encode() when the encoder
217 does not return a bytes object.
218
219- Issue #3774: Added a few more checks in PyTokenizer_FindEncoding to handle
Amaury Forgeot d'Arc1b933ed2008-09-04 22:34:09 +0000220 error conditions.
221
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000222- Issue #3594: Fix Parser/tokenizer.c:fp_setreadl() to open the file being
Brett Cannon8a9583e2008-09-04 05:04:25 +0000223 tokenized by either a file path or file pointer for the benefit of
224 PyTokenizer_FindEncoding().
225
Antoine Pitroufff95302008-09-03 18:58:51 +0000226- Issue #3696: Error parsing arguments on OpenBSD <= 4.4 and Cygwin. On
227 these systems, the mbstowcs() function is slightly buggy and must be
228 replaced with strlen() for the purpose of counting of number of wide
229 characters needed to represent the multi-byte character string.
230
Antoine Pitrou658fad82008-09-03 18:34:34 +0000231- Issue #3697: "Fatal Python error: Cannot recover from stack overflow"
232 could be easily encountered under Windows in debug mode when exercising
233 the recursion limit checking code, due to bogus handling of recursion
234 limit when USE_STACKCHEK was enabled.
235
Brett Cannon54bd41d2008-09-02 04:01:42 +0000236- Issue 3639: The _warnings module could segfault the interpreter when
237 unexpected types were passed in as arguments.
238
Antoine Pitrouc6b09eb2008-09-01 15:10:14 +0000239- Issue #3712: The memoryview object had a reference leak and didn't support
240 cyclic garbage collection.
241
Antoine Pitrouf71995782008-08-29 18:37:05 +0000242- Issue #3668: Fix a memory leak with the "s*" argument parser in
243 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
244 was correctly parsed but parsing of subsequent arguments failed.
245
Amaury Forgeot d'Arcdb26f7c2008-08-29 07:13:32 +0000246- Issue #3611: An exception __context__ could be cleared in a complex pattern
247 involving a __del__ method re-raising an exception.
248
Antoine Pitrouec569b72008-08-26 22:40:48 +0000249- Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
250 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
251 mechanism. In the process, fix a bug where isinstance() and issubclass(),
252 when given a tuple of classes as second argument, were looking up
253 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
254 type object.
255
Antoine Pitroue2dffc02008-08-26 22:02:58 +0000256- Issue #3663: Py_None was decref'd when printing SyntaxErrors.
257
Benjamin Peterson9edd2bd2008-08-27 00:31:37 +0000258- Issue #3651: Fix various memory leaks when using the buffer
259 interface, or when the "s#" code of PyArg_ParseTuple is given a
260 bytes object.
261
Neal Norwitz6ae2eb22008-08-24 23:50:08 +0000262- Issue #3657: Fix uninitialized memory read when pickling longs.
263 Found by valgrind.
264
Neal Norwitz3ce5d922008-08-24 07:08:55 +0000265- Apply security patches from Apple.
266
Neal Norwitz2f99b242008-08-24 05:48:10 +0000267- Fix crashes on memory allocation failure found with failmalloc.
268
269- Fix memory leaks found with valgrind and update suppressions file.
270
271- Fix compiler warnings in opt mode which would lead to invalid memory reads.
272
273- Fix problem using wrong name in decimal module reported by pychecker.
274
Amaury Forgeot d'Arc20443f32008-08-22 22:05:20 +0000275- Issue #3650: Fixed a reference leak in bytes.split('x').
276
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000277- bytes(o) now tries to use o.__bytes__() before using fallbacks.
278
Gregory P. Smith207f2112008-09-07 06:29:10 +0000279- Issue #1204: The configure script now tests for additional libraries
280 that may be required when linking against readline. This fixes issues
281 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
282
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000283C API
284-----
285
286- PyObject_Bytes and PyBytes_FromObject were added.
287
Barry Warsaw8509df72008-08-21 03:02:47 +0000288Library
289-------
290
Guido van Rossum698280d2008-09-10 17:44:35 +0000291- Issue #3756: make re.escape() handle bytes as well as str.
292
Georg Brandl7cd67cc2008-09-09 19:31:25 +0000293- Issue #3800: fix filter() related bug in formatter.py.
294
Antoine Pitrou5fe291f2008-09-06 23:00:03 +0000295- Issue #874900: fix behaviour of threading module after a fork.
296
Antoine Pitrou9e4fdf42008-09-05 23:43:02 +0000297- Issue #3535: zipfile couldn't read some zip files larger than 2GB.
298
299- Issue #3776: Deprecate the bsddb package for removal in 3.0.
300
301- Issue #3762: platform.architecture() fails if python is lanched via
302 its symbolic link.
303
Antoine Pitroud79dc622008-09-05 00:03:33 +0000304- Issue #3660: fix a memory leak in the C accelerator of the pickle module.
305
Antoine Pitrou1d6a16b2008-09-04 21:32:09 +0000306- Issue #3160: the "bdist_wininst" distutils command didn't work.
307
Guilherme Polob212b752008-09-04 11:21:31 +0000308- Issue #1658: tkinter changes dict size during iteration in both
309 tkinter.BaseWidget and tkinter.scrolledtext.ScrolledText.
310
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000311- The bsddb module (and therefore the dbm.bsd module) has been removed.
Gregory P. Smith451e99b2008-09-04 04:46:48 +0000312 It is now maintained outside of the standard library at
313 http://www.jcea.es/programacion/pybsddb.htm.
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000314
Facundo Batistac469d4c2008-09-03 22:49:01 +0000315- Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
316 to the urlparse one. Added a DeprecationWarning in the old module, it
317 will be deprecated in the future.
318
Marc-André Lemburg7b2b1f92008-09-02 12:10:46 +0000319- Issue #3719: platform.architecture() fails if there are spaces in the
320 path to the Python binary.
321
Brett Cannonec92e182008-09-02 02:46:59 +0000322- Issue 3602: As part of the merge of r66135, make the parameters on
323 warnings.catch_warnings() keyword-only. Also remove a DeprecationWarning.
324
Benjamin Petersonb3085c92008-09-01 23:09:31 +0000325- The deprecation warnings for the camelCase threading API names were removed.
326
Jesse Noller338f5782008-09-03 18:22:19 +0000327- Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
328 SEM_VALUE_MAX.
329
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000330Extension Modules
331-----------------
332
Antoine Pitrou9cadb1b2008-09-15 23:02:56 +0000333- Issue #3782: os.write() must not accept unicode strings.
334
Amaury Forgeot d'Arcd8976f12008-09-02 23:22:56 +0000335- Issue #2975: When compiling several extension modules with Visual Studio 2008
336 from the same python interpreter, some environment variables would grow
337 without limit.
338
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000339- Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
340 exploitation of poor argument checking.
341
Jesus Cea6ba33292008-08-31 14:12:11 +0000342- bsddb code updated to version 4.7.3pre2. This code is the same than
343 Python 2.6 one, since the intention is to keep an unified 2.x/3.x codebase.
344 The Python code is automatically translated using "2to3". Please, do not
345 update this code in Python 3.0 by hand. Update the 2.6 one and then
346 do "2to3".
347
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000348- The _bytesio and _stringio modules are now compiled into the python binary.
349
Gregory P. Smith693fc462008-09-06 20:13:06 +0000350- Issue #3492 and #3790: Fixed the zlib module and zipimport module uses of
351 mutable bytearray objects where they should have been using immutable bytes.
352
Gregory P. Smith0a608fd2008-09-06 21:34:51 +0000353- Issue #3797: Fixed the dbm, marshal, mmap, ossaudiodev, & winreg modules to
354 return bytes objects instead of bytearray objects.
355
Gregory P. Smith693fc462008-09-06 20:13:06 +0000356
Neal Norwitz8f2f22a2008-08-24 20:59:23 +0000357Tools/Demos
358-----------
359
360- Fix Misc/gdbinit so it works.
361
Barry Warsaw8509df72008-08-21 03:02:47 +0000362
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000363Build
364-----
365
Hirokazu Yamamoto54a1cc62008-09-09 17:55:11 +0000366- Issue #3812: Failed to build python if configure --without-threads.
367
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000368- Issue #3791: Remove the bsddb module from the Windows installer, and the
369 core bsddb library from the Windows build files.
370
371
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000372What's new in Python 3.0b3?
373===========================
374
Barry Warsaw57c10582008-08-21 02:39:51 +0000375*Release date: 20-Aug-2008*
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000376
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000377Core and Builtins
378-----------------
379
Benjamin Petersonbc74e5b2008-08-23 20:19:17 +0000380- Issue #3653: Fix a segfault when sys.excepthook was called with invalid
381 arguments.
382
Antoine Pitrou616d2852008-08-19 22:09:34 +0000383- Issue #2394: implement more of the memoryview API, with the caveat that
384 only one-dimensional contiguous buffers are supported and exercised right
385 now. Slicing, slice assignment and comparison (equality and inequality)
386 have been added. Also, the tolist() method has been implemented, but only
387 for byte buffers. Endly, the API has been updated to return bytes objects
388 wherever it used to return bytearrays.
389
Antoine Pitrouee58fa42008-08-19 18:22:14 +0000390- Issue #3560: clean up the new C PyMemoryView API so that naming is
391 internally consistent; add macros PyMemoryView_GET_BASE() and
392 PyMemoryView_GET_BUFFER() to access useful properties of a memory views
393 without relying on a particular implementation; remove the ill-named
394 PyMemoryView() function (PyMemoryView_GET_BUFFER() can be used instead).
395
Thomas Hellerf5049fc2008-08-19 19:49:49 +0000396- ctypes function pointers that are COM methods have a boolean True
397 value again.
398
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000399- Issue #1819: function calls with several named parameters are now on
400 average 35% faster (as measured by pybench).
401
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000402- The undocumented C APIs PyUnicode_AsString() and
403 PyUnicode_AsStringAndSize() were made private to the interpreter, in
404 order to be able to refine their interfaces for Python 3.1.
405
406 If you need to access the UTF-8 representation of a Unicode object
407 as bytes string, please use PyUnicode_AsUTF8String() instead.
408
Antoine Pitrouaf14b792008-08-07 21:50:41 +0000409- Issue #3460: PyUnicode_Join() implementation is 10% to 80% faster thanks
410 to Python 3.0's stricter semantics which allow to avoid successive
411 reallocations of the result string (this also affects str.join()).
412
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000413
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000414Library
415-------
416
Hye-Shik Chang50d1f792008-08-23 08:03:03 +0000417- Issue #1276: Added temporary aliases for CJK Mac encodings to resolve
418 a build problem on MacOS with CJK locales. It adds four temporary
419 mappings to existing legacy codecs that are virtually compatible
420 with Mac encodings. They will be replaced by codecs correctly
421 implemented in 3.1.
422
Amaury Forgeot d'Arc41e36672008-08-20 21:35:50 +0000423- Issue #3614: Corrected a typo in xmlrpc.client, leading to a NameError
424 "global name 'header' is not defined".
425
Antoine Pitroufd036452008-08-19 17:56:33 +0000426- Issue #2834: update the regular expression library to match the unicode
427 standards of py3k. In other words, mixing bytes and unicode strings
428 (be it as pattern, search string or replacement string) raises a TypeError.
429 Moreover, the re.UNICODE flag is enabled automatically for unicode patterns,
430 and can be disabled by specifying a new re.ASCII flag; as for bytes
431 patterns, ASCII matching is the only option and trying to specify re.UNICODE
432 for such patterns raises a ValueError.
433
Guido van Rossum52dbbb92008-08-18 21:44:30 +0000434- Issue #3300: make urllib.parse.[un]quote() default to UTF-8.
435 Code contributed by Matt Giuca. quote() now encodes the input
436 before quoting, unquote() decodes after unquoting. There are
437 new arguments to change the encoding and errors settings.
438 There are also new APIs to skip the encode/decode steps.
439 [un]quote_plus() are also affected.
440
Nick Coghlan36f49522008-08-18 12:31:52 +0000441- Issue #2235: numbers.Number now blocks inheritance of the default id()
442 based hash because that hash mechanism is not correct for numeric types.
443 All concrete numeric types that inherit from Number (rather than just
444 registering with it) must explicitly provide a hash implementation in
445 order for their instances to be hashable.
446
Benjamin Peterson4cd6a952008-08-17 20:23:46 +0000447- Issue #2676: in the email package, content-type parsing was hanging on
448 pathological input because of quadratic or exponential behaviour of a
449 regular expression.
450
Antoine Pitrou87695762008-08-14 22:44:29 +0000451- Issue #3476: binary buffered reading through the new "io" library is now
452 thread-safe.
453
Robert Schuppenies3d1c7de2008-08-10 11:28:17 +0000454- Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
455 menu entries were not deleted.
456
Lars Gustäbel0c24e8b2008-08-02 11:43:24 +0000457- Remove the TarFileCompat class from tarfile.py.
458
Amaury Forgeot d'Arcbdbddf82008-08-01 00:06:49 +0000459- Issue #2491: os.fdopen is now almost an alias for the built-in open(), and
460 accepts the same parameters. It just checks that its first argument is an
461 integer.
462
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000463- Issue #3394: zipfile.writestr sets external attributes when passed a
464 file name rather than a ZipInfo instance, so files are extracted with
465 mode 0600 rather than 000 under Unix.
466
Antoine Pitrouc66f9092008-07-28 19:46:11 +0000467- Issue #2523: Fix quadratic behaviour when read()ing a binary file without
468 asking for a specific length.
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000469
Martin v. Löwis371bb502008-08-16 13:02:57 +0000470Extension Modules
471-----------------
472
473- Bug #3542: Support Unicode strings in _msi module.
474
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000475What's new in Python 3.0b2?
476===========================
477
Barry Warsaw4bd1cef2008-07-18 02:28:44 +0000478*Release date: 17-Jul-2008*
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000479
480Core and Builtins
481-----------------
482
Mark Dickinson65fe25e2008-07-16 11:30:51 +0000483- Issue #3008: the float type has a new instance method 'float.hex'
484 and a new class method 'float.fromhex' to convert floating-point
485 numbers to and from hexadecimal strings, respectively.
486
Eric Smithd68af8f2008-07-16 00:15:35 +0000487- Issue #3083: Add alternate (#) formatting for bin, oct, hex output
488 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
489
Amaury Forgeot d'Arca4db6862008-07-04 21:26:43 +0000490- Issue #3280: like chr(), the "%c" format now accepts unicode code points
491 beyond the Basic Multilingual Plane (above 0xffff) on all configurations. On
492 "narrow Unicode" builds, the result is a string of 2 code units, forming a
493 UTF-16 surrogate pair.
494
Georg Brandld52429f2008-07-04 15:55:02 +0000495- Issue #3282: str.isprintable() should return False for undefined
496 Unicode characters.
497
Martin v. Löwis029656f2008-06-30 04:06:08 +0000498- Issue #3236: Return small longs from PyLong_FromString.
499
Benjamin Petersone6528212008-07-15 15:32:09 +0000500- Exception tracebacks now support exception chaining.
501
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000502Library
503-------
504
Brett Cannonc2542e92008-07-25 18:19:20 +0000505- Removed the sunaudio module. Use sunau instead.
506
Thomas Heller47bc8092008-08-19 06:38:12 +0000507- Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
508 api functions without holding the GIL, which could lead to a fatal
509 error when they failed.
510
511- Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
512
Georg Brandl30704ea02008-07-23 15:07:12 +0000513- Removed "ast" function aliases from the parser module.
514
Thomas Heller15383a02008-07-15 19:46:52 +0000515- Issue #3313: Fixed a crash when a failed dlopen() call does not set
516 a valid dlerror() message.
517
Thomas Heller0261e1e2008-07-15 17:25:07 +0000518- Issue #3258: Fixed a crash when a ctypes POINTER type to an
519 incomplete structure was created.
520
Georg Brandl1abcbf82008-07-01 19:28:43 +0000521- Issue #2683: Fix inconsistency in subprocess.Popen.communicate(): the
522 argument now must be a bytes object in any case.
523
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000524- Issue #3145: help("modules whatever") failed when trying to load the source
525 code of every single module of the standard library, including invalid files
526 used in the test suite.
527
Georg Brandlbded4d32008-07-17 18:15:35 +0000528- The gettext library now consistently uses Unicode strings for message ids
529 and message strings, and ``ugettext()`` and the like don't exist anymore.
Benjamin Peterson801844d2008-07-14 14:32:15 +0000530
Benjamin Petersone6528212008-07-15 15:32:09 +0000531- The traceback module has been expanded to handle chained exceptions.
532
Amaury Forgeot d'Arc612f61f2008-07-02 23:02:21 +0000533C API
534-----
535
536- Issue #3247: the function Py_FindMethod was removed. Modern types should
537 use the tp_methods slot instead.
538
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000539Tools/Demos
540-----------
541
Georg Brandl336341f2008-07-01 20:21:28 +0000542- The Mac/Demos directory has been removed.
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000543
Georg Brandl336341f2008-07-01 20:21:28 +0000544- All of the Mac scripts have been removed (including BuildApplet.py).
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000545
546
Brett Cannon0d71ee72008-05-08 18:13:40 +0000547What's new in Python 3.0b1?
548===========================
549
Barry Warsawc1e689e2008-06-19 00:35:43 +0000550*Release date: 18-Jun-2008*
Brett Cannon0d71ee72008-05-08 18:13:40 +0000551
552Core and Builtins
553-----------------
554
Brett Cannondb734912008-06-27 00:52:15 +0000555- Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
556 argument being anything other than a dict or None. Also fixed a bug in error
557 handling when 'message' and 'category' were both set to None, triggering a
558 bus error.
559
Amaury Forgeot d'Arcc856c7a2008-06-16 19:50:09 +0000560- Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
561 holds the last (strong) reference to its referent.
562
Georg Brandl559e5d72008-06-11 18:37:52 +0000563- Issue #2630: implement PEP 3138. repr() now returns printable
564 Unicode characters unescaped, to get an ASCII-only representation
565 of an object use ascii().
566
Amaury Forgeot d'Arcf1ca0b12008-06-11 17:40:47 +0000567- Issue #1342: On windows, Python could not start when installed in a
568 directory with non-ascii characters.
569
Martin v. Löwis1a214512008-06-11 05:26:20 +0000570- Implement PEP 3121: new module initialization and finalization API.
571
Georg Brandle1b5ac62008-06-04 13:06:58 +0000572- Removed the already-defunct ``-t`` option.
573
Amaury Forgeot d'Arc74c71f52008-05-26 21:41:42 +0000574- Issue #2957: Corrected a ValueError "recursion limit exceeded", when
575 unmarshalling many code objects, which happens when importing a
576 large .pyc file (~1000 functions).
577
Georg Brandl52b92cc2008-05-25 09:43:03 +0000578- Issue #2963: fix merging oversight that disabled method cache for
579 all types.
Georg Brandl1bcf35a2008-05-25 09:32:09 +0000580
Georg Brandlc9b09532008-05-25 09:24:38 +0000581- Issue #2964: fix a missing INCREF in instancemethod_descr_get.
582
Georg Brandl52b92cc2008-05-25 09:43:03 +0000583- Issue #2895: Don't crash when given bytes objects as keyword names.
Georg Brandld8b690f2008-05-16 17:28:50 +0000584
Georg Brandl52b92cc2008-05-25 09:43:03 +0000585- Issue #2798: When parsing arguments with PyArg_ParseTuple, the "s"
586 code now allows any unicode string and returns a utf-8 encoded
587 buffer, just like the "s#" code already does. The "z" code was
588 corrected as well.
Amaury Forgeot d'Arc07404592008-05-12 13:19:07 +0000589
Georg Brandl52b92cc2008-05-25 09:43:03 +0000590- Issue #2863: generators now have a ``gen.__name__`` attribute that
591 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
592 ``func.func_code.co_name``. The repr() of a generator now also
593 contains this name.
Alexandre Vassalottie9f305f2008-05-16 04:39:54 +0000594
595- Issue #2831: enumerate() now has a ``start`` argument.
596
Georg Brandl52b92cc2008-05-25 09:43:03 +0000597- Issue #2801: fix bug in the float.is_integer method where a
598 ValueError was sometimes incorrectly raised.
Mark Dickinsonc4352b02008-05-09 13:55:01 +0000599
Georg Brandl52b92cc2008-05-25 09:43:03 +0000600- The ``--with-toolbox-glue`` option (and the associated
601 pymactoolbox.h) have been removed.
Benjamin Peterson79629ab2008-05-14 21:07:12 +0000602
Georg Brandl52b92cc2008-05-25 09:43:03 +0000603- Issue #2196: hasattr() now lets exceptions which do not inherit
604 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
605 ignoring them.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000606
Benjamin Petersoneec3d712008-06-11 15:59:43 +0000607- #3021 Exception reraising sematics have been significantly improved. However,
608 f_exc_type, f_exc_value, and f_exc_traceback cannot be accessed from Python
609 code anymore.
610
Benjamin Peterson4f92ca42008-06-11 20:21:57 +0000611- Three of PyNumberMethods' members, nb_coerce, nb_hex, and nb_oct, have been
612 removed.
613
Brett Cannon0d71ee72008-05-08 18:13:40 +0000614Extension Modules
615-----------------
616
Georg Brandl38feaf02008-05-25 07:45:51 +0000617- Renamed ``_winreg`` module to ``winreg``.
618
Georg Brandl52b92cc2008-05-25 09:43:03 +0000619- Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
620 platform.
Alexandre Vassalottibee32532008-05-16 18:15:12 +0000621
622- Support for Windows 9x has been removed from the winsound module.
623
Georg Brandl52b92cc2008-05-25 09:43:03 +0000624- Issue #2870: cmathmodule.c compile error.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000625
Brett Cannon0d71ee72008-05-08 18:13:40 +0000626Library
627-------
628
Benjamin Peterson87069fd2008-08-20 02:00:14 +0000629- The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
630 symtable.Symbol have been removed.
631
Amaury Forgeot d'Arccb0d2d72008-06-18 22:19:22 +0000632- Patch #3133: http.server.CGIHTTPRequestHandler did not work on windows.
633
Jeremy Hylton1afc1692008-06-18 20:49:58 +0000634- a new ``urllib`` package was created. It consists of code from
635 ``urllib``, ``urllib2``, ``urlparse``, and ``robotparser``. The old
636 modules have all been removed. The new package has five submodules:
637 ``urllib.parse``, ``urllib.request``, ``urllib.response``,
638 ``urllib.error``, and ``urllib.robotparser``. The
639 ``urllib.request.urlopen()`` function uses the url opener from
640 ``urllib2``. (Note that the unittests have not been renamed for the
641 beta, but they will be renamed in the future.)
642
Benjamin Petersona0c0a4a2008-06-12 22:15:50 +0000643- rfc822 has been removed in favor of the email package.
644
Benjamin Peterson425ea7f2008-06-12 14:11:35 +0000645- mimetools has been removed in favor of the email package.
Benjamin Peterson23c51a22008-06-12 14:06:57 +0000646
Barry Warsawf5019422008-06-12 02:42:00 +0000647- Patch #2849: Remove use of rfc822 module from standard library.
648
Alexandre Vassalotti794652d2008-06-11 22:58:36 +0000649- Added C optimized implementation of io.StringIO.
650
Alexandre Vassalottica2d6102008-06-12 18:26:05 +0000651- The ``pickle`` module is now automatically use an optimized C
652 implementation of Pickler and Unpickler when available. The
653 ``cPickle`` module is no longer needed.
654
Georg Brandl877b10a2008-06-01 21:25:55 +0000655- Removed the ``htmllib`` and ``sgmllib`` modules.
656
Georg Brandl61013952008-05-28 15:56:30 +0000657- The deprecated ``SmartCookie`` and ``SimpleCookie`` classes have
658 been removed from ``http.cookies``.
659
Brett Cannona23810f2008-05-26 19:04:21 +0000660- The ``commands`` module has been removed. Its getoutput() and
661 getstatusoutput() functions have been moved to the ``subprocess`` module.
662
Georg Brandl3d5c4252008-05-26 18:03:26 +0000663- The ``http`` package was created; it contains the old ``httplib``
664 as ``http.client``, ``Cookie`` as ``http.cookies``, ``cookielib``
665 as ``http.cookiejar``, and the content of the three ``HTTPServer``
666 modules as ``http.server``.
667
Georg Brandl38eceaa2008-05-26 11:14:17 +0000668- The ``xmlrpc`` package was created; it contains the old
669 ``xmlrpclib`` module as ``xmlrpc.client`` and the content of
670 the old ``SimpleXMLRPCServer`` and ``DocXMLRPCServer`` modules
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000671 as ``xmlrpc.server``.
Georg Brandl38eceaa2008-05-26 11:14:17 +0000672
673- The ``dbm`` package was created, containing the old modules
674 ``anydbm`` and ``whichdb`` in its ``__init__.py``, and having
675 ``dbm.gnu`` (was ``gdbm``), ``dbm.bsd`` (was ``dbhash``),
676 ``dbm.ndbm`` (was ``dbm``) and ``dbm.dumb`` (was ``dumbdbm``)
677 as submodules.
678
Georg Brandl52b92cc2008-05-25 09:43:03 +0000679- The ``repr`` module has been renamed to ``reprlib``.
Alexandre Vassalotti1f2ba4b2008-05-16 07:12:44 +0000680
Georg Brandl52b92cc2008-05-25 09:43:03 +0000681- The ``statvfs`` module has been removed.
Brett Cannonacbb7862008-05-16 00:42:57 +0000682
Georg Brandl52b92cc2008-05-25 09:43:03 +0000683- Issue #1713041: fix pprint's handling of maximum depth.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000684
Georg Brandl52b92cc2008-05-25 09:43:03 +0000685- Issue #2250: Exceptions raised during evaluation of names in
686 rlcompleter's ``Completer.complete()`` method are now caught and
687 ignored.
Alexandre Vassalotti8ae3e052008-05-16 00:41:41 +0000688
Georg Brandl52b92cc2008-05-25 09:43:03 +0000689- Patch #2659: Added ``break_on_hyphens`` option to textwrap's
690 ``TextWrapper`` class.
Alexandre Vassalotti1d1eaa42008-05-14 22:59:42 +0000691
Alexandre Vassalotti6461e102008-05-15 22:09:29 +0000692- Issue #2487: change the semantics of math.ldexp(x, n) when n is too
693 large to fit in a C long. ldexp(x, n) now returns a zero (with
694 suitable sign) if n is large and negative; previously, it raised
695 OverflowError.
696
Georg Brandl52b92cc2008-05-25 09:43:03 +0000697- The ``ConfigParser`` module has been renamed to ``configparser``.
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000698
Georg Brandl52b92cc2008-05-25 09:43:03 +0000699- Issue #2865: webbrowser.open() works again in a KDE environment.
Amaury Forgeot d'Arc2b2b44d2008-05-12 14:41:00 +0000700
Georg Brandl52b92cc2008-05-25 09:43:03 +0000701- The ``multifile`` module has been removed.
Brett Cannond3343cb2008-05-12 03:18:21 +0000702
Georg Brandl52b92cc2008-05-25 09:43:03 +0000703- The ``SocketServer`` module has been renamed to ``socketserver``.
Alexandre Vassalottice261952008-05-12 02:31:37 +0000704
Georg Brandl52b92cc2008-05-25 09:43:03 +0000705- Fixed the ``__all__`` setting on ``collections`` to include
706 ``UserList`` and ``UserString``.
Brett Cannon23a4a7b2008-05-12 00:56:28 +0000707
Brett Cannoncf3520c2008-05-11 22:47:58 +0000708- The sre module has been removed.
709
Alexandre Vassalottif260e442008-05-11 19:59:59 +0000710- The Queue module has been renamed to queue.
711
Alexandre Vassalottif7fa63d2008-05-11 08:55:36 +0000712- The copy_reg module has been renamed to copyreg.
713
Brett Cannond8b61ee2008-05-11 03:00:26 +0000714- The mhlib module has been removed.
715
Brett Cannonbd474422008-05-10 22:42:14 +0000716- The ihooks module has been removed.
717
Brett Cannonb59a2bd2008-05-10 22:03:16 +0000718- The fpformat module has been removed.
719
Brett Cannonf4fd9932008-05-10 21:11:46 +0000720- The dircache module has been removed.
721
Brett Cannond175b4c2008-05-10 03:19:54 +0000722- The Canvas module has been removed.
723
Mark Dickinsonb27406c2008-05-09 13:42:33 +0000724- The Decimal module gained the magic methods __round__, __ceil__,
725 __floor__ and __trunc__, to give support for round, math.ceil,
726 math.floor and math.trunc.
727
Brett Cannon900ee3a2008-05-08 20:31:11 +0000728- The user module has been removed.
729
Brett Cannon34afe872008-05-08 20:31:44 +0000730- The mutex module has been removed.
731
Brett Cannon0d71ee72008-05-08 18:13:40 +0000732- The imputil module has been removed.
733
Georg Brandl52b92cc2008-05-25 09:43:03 +0000734- os.path.walk has been removed in favor of os.walk.
Benjamin Petersond71ca412008-05-08 23:44:58 +0000735
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000736- pdb gained the "until" command.
737
Georg Brandl52b92cc2008-05-25 09:43:03 +0000738- The test.test_support module has been renamed to test.support.
Benjamin Petersonee8712c2008-05-20 21:35:26 +0000739
Georg Brandl32de7af2008-08-18 23:07:41 +0000740- The threading module API was renamed to be PEP 8 compliant. The
741 old names are still present, but will be removed in the near future.
Benjamin Peterson672b8032008-06-11 19:14:14 +0000742
Georg Brandl294d5a92008-06-01 19:25:32 +0000743Tools/Demos
744-----------
745
746- The bgen tool has been removed.
Benjamin Peterson630c8292008-06-01 18:50:38 +0000747
Brett Cannon0d71ee72008-05-08 18:13:40 +0000748Build
749-----
750
751
Barry Warsaw66079cd2008-04-04 01:36:36 +0000752What's New in Python 3.0a5?
753===========================
754
Barry Warsaw9eab8b02008-05-08 13:05:38 +0000755*Release date: 08-May-2008*
Barry Warsaw66079cd2008-04-04 01:36:36 +0000756
757Core and Builtins
758-----------------
759
Georg Brandl52b92cc2008-05-25 09:43:03 +0000760- Fixed misbehaviour of PyLong_FromSsize_t on systems where
761 sizeof(size_t) > sizeof(long).
Mark Dickinson7ab6be22008-04-15 21:42:42 +0000762
Georg Brandl52b92cc2008-05-25 09:43:03 +0000763- Issue #2221: Corrected a SystemError "error return without exception
764 set", when the code executed by exec() raises an exception, and
765 sys.stdout.flush() also raises an error.
Amaury Forgeot d'Arc7fedbe52008-04-10 21:03:09 +0000766
Georg Brandl52b92cc2008-05-25 09:43:03 +0000767- Bug #2565: The repr() of type objects now calls them 'class', not
768 'type' - whether they are builtin types or not.
Martin v. Löwis250ad612008-04-07 05:43:42 +0000769
Martin v. Löwis790465f2008-04-05 20:41:37 +0000770- The command line processing was converted to pass Unicode strings
771 through as unmodified as possible; as a consequence, the C API
772 related to command line arguments was changed to use wchar_t.
773
Georg Brandl52b92cc2008-05-25 09:43:03 +0000774- All backslashes in raw strings are interpreted literally. This
775 means that '\u' and '\U' escapes are not treated specially.
Benjamin Petersona2f837f2008-04-28 21:05:10 +0000776
Barry Warsaw66079cd2008-04-04 01:36:36 +0000777Extension Modules
778-----------------
779
780Library
781-------
782
Georg Brandl52b92cc2008-05-25 09:43:03 +0000783- ctypes objects now support the PEP3118 buffer interface.
Thomas Hellerb041fda2008-04-30 17:11:46 +0000784
Thomas Hellere106dc32008-04-24 18:39:36 +0000785- Issue #2682: ctypes callback functions now longer contain a cyclic
786 reference to themselves.
787
Georg Brandl52b92cc2008-05-25 09:43:03 +0000788- Issue #2058: Remove the buf attribute and add __slots__ to the
789 TarInfo class in order to reduce tarfile's memory usage.
Lars Gustäbelc2ea8c62008-04-14 10:05:48 +0000790
Martin v. Löwis8efc62c2008-04-10 19:02:25 +0000791- Bug #2606: Avoid calling .sort() on a dict_keys object.
792
Thomas Hellerbff533b2008-04-04 19:53:14 +0000793- The bundled libffi copy is now in sync with the recently released
794 libffi3.0.5 version, apart from some small changes to
795 Modules/_ctypes/libffi/configure.ac.
796
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000797Build
798-----
799
Mark Dickinsonb0e2b4c2008-04-26 20:48:56 +0000800- Issue #1496032: On alpha, use -mieee when gcc is the compiler.
801
Guido van Rossumdc21db32008-04-07 18:37:41 +0000802- "make install" is now an alias for "make altinstall", to prevent
Georg Brandl52b92cc2008-05-25 09:43:03 +0000803 accidentally overwriting a Python 2.x installation. Use "make
804 fullinstall" to force Python 3.0 to be installed as "python".
Guido van Rossumdc21db32008-04-07 18:37:41 +0000805
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000806- Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
807 gcc is used as compiler.
Barry Warsaw66079cd2008-04-04 01:36:36 +0000808
Georg Brandl52b92cc2008-05-25 09:43:03 +0000809
Barry Warsawa9d499d2008-03-01 18:38:07 +0000810What's New in Python 3.0a4?
811===========================
812
Barry Warsawbb5cd082008-04-02 23:33:27 +0000813*Release date: 02-Apr-2008*
Barry Warsawa9d499d2008-03-01 18:38:07 +0000814
Martin v. Löwis25931462008-03-17 20:43:42 +0000815Core and Builtins
816-----------------
817
818- Bug #2301: Don't try decoding the source code into the original
819 encoding for syntax errors.
820
Martin v. Löwis92fab752008-03-08 10:40:41 +0000821Extension Modules
822-----------------
823
Neal Norwitz6cf49cf2008-03-24 06:22:57 +0000824- The dl module was removed, use the ctypes module instead.
825
Martin v. Löwis92fab752008-03-08 10:40:41 +0000826- Use wchar_t functions in _locale module.
Barry Warsawa9d499d2008-03-01 18:38:07 +0000827
Martin v. Löwis071ef772008-03-08 11:24:24 +0000828Library
829-------
830
Georg Brandl52b92cc2008-05-25 09:43:03 +0000831- The class distutils.commands.build_py.build_py_2to3 can be used as a
832 build_py replacement to automatically run 2to3 on modules that are
833 going to be installed.
Martin v. Löwis73a22f02008-03-22 00:35:10 +0000834
Guido van Rossumf4169812008-03-17 22:56:06 +0000835- A new pickle protocol (protocol 3) is added with explicit support
836 for bytes. This is the default protocol. It intentionally cannot
837 be unpickled by Python 2.x.
838
839- When a pickle written by Python 2.x contains an (8-bit) str
840 instance, this is now decoded to a (Unicode) str instance. The
841 encoding used to do this defaults to ASCII, but can be overridden
842 via two new keyword arguments to the Unpickler class. Previously
843 this would create bytes instances, which is usually wrong: str
844 instances are often used to pickle attribute names etc., and text is
845 more common than binary data anyway.
846
Martin v. Löwis071ef772008-03-08 11:24:24 +0000847- Default to ASCII as the locale.getpreferredencoding, if the POSIX
Georg Brandl52b92cc2008-05-25 09:43:03 +0000848 system doesn't support CODESET and LANG isn't set or doesn't allow
849 deduction of an encoding.
Martin v. Löwis071ef772008-03-08 11:24:24 +0000850
Georg Brandl52b92cc2008-05-25 09:43:03 +0000851- Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned
852 value.
Gregory P. Smith425136b2008-03-17 20:45:21 +0000853
Georg Brandl52b92cc2008-05-25 09:43:03 +0000854- Issue #719888: Updated tokenize to use a bytes API. generate_tokens
855 has been renamed tokenize and now works with bytes rather than
856 strings. A new detect_encoding function has been added for
857 determining source file encoding according to PEP-0263. Token
858 sequences returned by tokenize always start with an ENCODING token
859 which specifies the encoding used to decode the file. This token is
860 used to encode the output of untokenize back to bytes.
861
Barry Warsawa9d499d2008-03-01 18:38:07 +0000862
Christian Heimesbc873412007-12-08 22:11:32 +0000863What's New in Python 3.0a3?
864===========================
865
Barry Warsaw659fc422008-03-01 17:45:23 +0000866*Release date: 29-Feb-2008*
Christian Heimesbc873412007-12-08 22:11:32 +0000867
868Core and Builtins
869-----------------
870
Georg Brandl52b92cc2008-05-25 09:43:03 +0000871- Issue #2282: io.TextIOWrapper was not overriding seekable() from
872 io.IOBase.
Ka-Ping Yeeddaa7062008-03-17 20:35:15 +0000873
Georg Brandl52b92cc2008-05-25 09:43:03 +0000874- Issue #2115: Important speedup in setting __slot__ attributes. Also
875 prevent a possible crash: an Abstract Base Class would try to access
876 a slot on a registered virtual subclass.
Christian Heimesa156e092008-02-16 07:38:31 +0000877
Georg Brandl52b92cc2008-05-25 09:43:03 +0000878- Fixed repr() and str() of complex numbers with infinity or nan as
879 real or imaginary part.
Christian Heimesa156e092008-02-16 07:38:31 +0000880
Georg Brandl52b92cc2008-05-25 09:43:03 +0000881- Clear all free list during a gc.collect() of the highest generation
882 in order to allow pymalloc to free more arenas. Python may give back
883 memory to the OS earlier.
Christian Heimesa156e092008-02-16 07:38:31 +0000884
Georg Brandl52b92cc2008-05-25 09:43:03 +0000885- Issue #2045: Fix an infinite recursion triggered when printing a
886 subclass of collections.defaultdict, if its default_factory is set
887 to a bound method.
Christian Heimesa156e092008-02-16 07:38:31 +0000888
889- Fixed a minor memory leak in dictobject.c. The content of the free
890 list was not freed on interpreter shutdown.
891
Georg Brandl52b92cc2008-05-25 09:43:03 +0000892- Limit free list of method and builtin function objects to 256
893 entries each.
Christian Heimesa156e092008-02-16 07:38:31 +0000894
Georg Brandl52b92cc2008-05-25 09:43:03 +0000895- Patch #1953: Added ``sys._compact_freelists()`` and the C API
896 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
Christian Heimesa156e092008-02-16 07:38:31 +0000897 to compact the internal free lists of pre-allocted ints and floats.
898
899- Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls.
Georg Brandl52b92cc2008-05-25 09:43:03 +0000900 Python expected the return type int but the fork familie returns
901 pi_t.
Christian Heimesa156e092008-02-16 07:38:31 +0000902
Georg Brandl52b92cc2008-05-25 09:43:03 +0000903- Issue #1678380: Fix a bug that identifies 0j and -0j when they
904 appear in the same code unit.
Christian Heimesa156e092008-02-16 07:38:31 +0000905
Georg Brandl52b92cc2008-05-25 09:43:03 +0000906- Issue #2025: Added tuple.count() and tuple.index() methods to comply
907 with the collections.Sequence API.
Raymond Hettinger65baa342008-02-07 00:41:02 +0000908
Georg Brandl52b92cc2008-05-25 09:43:03 +0000909- Fixed multiple reinitialization of the Python interpreter. The small
910 int list in longobject.c has caused a seg fault during the third
911 finalization.
Christian Heimesdfc12ed2008-01-31 15:16:38 +0000912
Georg Brandl52b92cc2008-05-25 09:43:03 +0000913- Issue #1973: bytes.fromhex('') raised SystemError.
Christian Heimesc04dac02008-01-30 11:27:57 +0000914
Georg Brandl52b92cc2008-05-25 09:43:03 +0000915- Issue #1771: remove cmp parameter from sorted() and list.sort().
Raymond Hettinger70b64fc2008-01-30 20:15:17 +0000916
Georg Brandl52b92cc2008-05-25 09:43:03 +0000917- Issue #1969: split and rsplit in bytearray are inconsistent.
Christian Heimes7b876152008-01-30 09:51:48 +0000918
Georg Brandl52b92cc2008-05-25 09:43:03 +0000919- map() no longer accepts None for the first argument. Use zip()
920 instead.
Raymond Hettinger1dfde1d2008-01-22 23:25:35 +0000921
Facundo Batista2336bdd2008-01-19 19:12:01 +0000922- Issue #1769: Now int("- 1") is not allowed any more.
923
Georg Brandl52b92cc2008-05-25 09:43:03 +0000924- Object/longobject.c: long(float('nan')) raises an OverflowError
925 instead of returning 0.
Christian Heimes386cd1e2008-01-15 02:01:20 +0000926
Georg Brandl52b92cc2008-05-25 09:43:03 +0000927- Issue #1762972: __file__ points to the source file instead of the
928 pyc/pyo file if the py file exists.
Christian Heimes3b06e532008-01-07 20:12:44 +0000929
Guido van Rossumab078dd2008-01-06 00:09:11 +0000930- Issue #1393: object_richcompare() returns NotImplemented instead of
931 False if the objects aren't equal, to give the other side a chance.
932
Guido van Rossume239b002008-01-06 00:44:20 +0000933- Issue #1692: Interpreter was not displaying location of SyntaxError.
Kurt B. Kaiser43b15092008-01-05 04:32:22 +0000934
Georg Brandl52b92cc2008-05-25 09:43:03 +0000935- Improve some exception messages when Windows fails to load an
936 extension module. Now we get for example '%1 is not a valid Win32
937 application' instead of 'error code 193'. Also use Unicode strings
938 to deal with non-English locales.
Amaury Forgeot d'Arcbccd63c2008-01-04 01:21:27 +0000939
Georg Brandl52b92cc2008-05-25 09:43:03 +0000940- Issue #1587: Added instancemethod wrapper for PyCFunctions. The
941 Python C API has gained a new type *PyInstanceMethod_Type* and the
942 functions *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)*
943 and *PyInstanceMethod_Function(im)*.
Christian Heimesa3534a62007-12-11 19:56:40 +0000944
Georg Brandl52b92cc2008-05-25 09:43:03 +0000945- Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed
946 from the gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE
947 are now enough to print the corresponding list of objects considered
948 by the garbage collector.
Amaury Forgeot d'Arcad8dcd52007-12-10 23:58:35 +0000949
Georg Brandl52b92cc2008-05-25 09:43:03 +0000950- Issue #1573: Improper use of the keyword-only syntax makes the
951 parser crash.
Christian Heimesbc873412007-12-08 22:11:32 +0000952
Georg Brandl52b92cc2008-05-25 09:43:03 +0000953- Issue #1564: The set implementation should special-case PyUnicode
954 instead of PyString.
Christian Heimes0ded5b52007-12-10 15:50:56 +0000955
Guido van Rossumea6775b2008-02-21 20:16:31 +0000956- Patch #1031213: Decode source line in SyntaxErrors back to its
957 original source encoding.
Christian Heimes7131fd92008-02-19 14:21:46 +0000958
Christian Heimes09aaa882008-02-23 15:01:06 +0000959- inspect.getsource() includes the decorators again.
960
Guido van Rossumea6775b2008-02-21 20:16:31 +0000961- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a
962 mountpoint.
Christian Heimes7131fd92008-02-19 14:21:46 +0000963
Georg Brandl52b92cc2008-05-25 09:43:03 +0000964- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
965 the first chunk fed to the decoder started with a BOM, but was
966 longer than 3 bytes.
Christian Heimes7131fd92008-02-19 14:21:46 +0000967
Christian Heimesbc873412007-12-08 22:11:32 +0000968Extension Modules
969-----------------
970
Georg Brandl52b92cc2008-05-25 09:43:03 +0000971- Code for itertools ifilter(), imap(), and izip() moved to bultins
972 and renamed to filter(), map(), and zip(). Also, renamed
973 izip_longest() to zip_longest() and ifilterfalse() to filterfalse().
Raymond Hettinger736c0ab2008-03-13 02:09:15 +0000974
Georg Brandl52b92cc2008-05-25 09:43:03 +0000975- Issue #1762972: Readded the reload() function as imp.reload().
Guido van Rossumea6775b2008-02-21 20:16:31 +0000976
Georg Brandl52b92cc2008-05-25 09:43:03 +0000977- Bug #2111: mmap segfaults when trying to write a block opened with
978 PROT_READ.
Christian Heimesa156e092008-02-16 07:38:31 +0000979
Georg Brandl52b92cc2008-05-25 09:43:03 +0000980- Issue #2063: correct order of utime and stime in os.times() result
981 on Windows.
Christian Heimes7131fd92008-02-19 14:21:46 +0000982
Christian Heimesbc873412007-12-08 22:11:32 +0000983Library
984-------
985
Raymond Hettinger48b8b662008-02-05 01:53:00 +0000986- Weakref dictionaries now inherit from MutableMapping.
Raymond Hettinger48b8b662008-02-05 01:53:00 +0000987
Georg Brandl52b92cc2008-05-25 09:43:03 +0000988- Created new UserDict class in collections module. This one inherits
989 from and complies with the MutableMapping ABC. Also, moved
990 UserString and UserList to the collections module. The
991 MutableUserString class was removed.
Raymond Hettinger48b8b662008-02-05 01:53:00 +0000992
Guido van Rossumea6775b2008-02-21 20:16:31 +0000993- Removed UserDict.DictMixin. Replaced all its uses with
994 collections.MutableMapping.
Raymond Hettingeredf3b732008-02-04 22:07:15 +0000995
Guido van Rossume239b002008-01-06 00:44:20 +0000996- Issue #1703: getpass() should flush after writing prompt.
Christian Heimesfc5aa9d2007-12-11 09:00:01 +0000997
Guido van Rossume239b002008-01-06 00:44:20 +0000998- Issue #1585: IDLE uses non-existent xrange() function.
999
1000- Issue #1578: Problems in win_getpass.
1001
Georg Brandl52d168a2008-01-07 18:10:24 +00001002Build
1003-----
1004
Georg Brandl52b92cc2008-05-25 09:43:03 +00001005- Renamed --enable-unicode configure flag to --with-wide-unicode,
1006 since Unicode strings can't be disabled anymore.
Georg Brandl52d168a2008-01-07 18:10:24 +00001007
Guido van Rossume239b002008-01-06 00:44:20 +00001008C API
1009-----
1010
1011- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
1012 Py_TYPE and Py_REFCNT.
1013
Georg Brandl52b92cc2008-05-25 09:43:03 +00001014- New API PyImport_ImportModuleNoBlock(), works like
1015 PyImport_ImportModule() but won't block on the import lock
1016 (returning an error instead).
Christian Heimes0ec88b32007-12-10 17:02:00 +00001017
Christian Heimesbc873412007-12-08 22:11:32 +00001018
Fred Drake0e474a82007-10-11 18:01:43 +00001019What's New in Python 3.0a2?
Christian Heimesbc873412007-12-08 22:11:32 +00001020===========================
Fred Drake0e474a82007-10-11 18:01:43 +00001021
Guido van Rossum99533a92007-12-06 05:07:41 +00001022*Release date: 07-Dec-2007*
1023
1024(Note: this list is incomplete.)
Fred Drake0e474a82007-10-11 18:01:43 +00001025
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001026Core and Builtins
1027-----------------
1028
Brett Cannon37f7e6e2007-10-26 05:42:09 +00001029- str8 now has the same construction signature as bytes.
1030
Georg Brandl52b92cc2008-05-25 09:43:03 +00001031- Comparisons between str and str8 now return False/True for ==/!=.
1032 sqlite3 returns str8 when recreating on object from it's __conform__
1033 value. The struct module returns str8 for all string-related
1034 formats. This was true before this change, but becomes more
1035 apparent thanks to string comparisons always being False.
Brett Cannon40430012007-10-22 20:24:51 +00001036
Georg Brandl52b92cc2008-05-25 09:43:03 +00001037- Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode,
1038 buffer, encoding, newline)`.
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001039
1040- Fixed `imp.find_module()` to obey the -*- coding: -*- header.
1041
1042- Changed `__file__` and `co_filename` to unicode. The path names are decoded
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +00001043 with `Py_FileSystemDefaultEncoding` and a new API method
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001044 `PyUnicode_DecodeFSDefault(char*)` was added.
1045
Georg Brandl52b92cc2008-05-25 09:43:03 +00001046- io.open() and _fileio.FileIO have grown a new argument closefd. A
1047 false value disables the closing of the file descriptor.
Guido van Rossum2dced8b2007-10-30 17:27:30 +00001048
Georg Brandl52b92cc2008-05-25 09:43:03 +00001049- Added a new option -b to issues warnings (-bb for errors) about
1050 certain operations between bytes/buffer and str like str(b'') and
1051 comparison.
Guido van Rossum98297ee2007-11-06 21:34:58 +00001052
Georg Brandl52b92cc2008-05-25 09:43:03 +00001053- The standards streams sys.stdin, stdout and stderr may be None when
1054 the when the C runtime library returns an invalid file descriptor
1055 for the streams (fileno(stdin) < 0). For now this happens only for
1056 Windows GUI apps and scripts started with `pythonw.exe`.
Christian Heimes58cb1b82007-11-13 02:19:40 +00001057
Christian Heimesbce52be2007-11-17 19:08:41 +00001058- Added PCbuild9 directory for VS 2008.
1059
Georg Brandl52b92cc2008-05-25 09:43:03 +00001060- Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to
1061 work around a name clash with VS 2008 on Windows.
Christian Heimesbce52be2007-11-17 19:08:41 +00001062
Georg Brandl52b92cc2008-05-25 09:43:03 +00001063- Unbound methods are gone for good. ClassObject.method returns an
1064 ordinary function object, instance.method still returns a bound
1065 method object. The API of bound methods is cleaned up, too. The
1066 im_class attribute is removed and im_func + im_self are renamed to
1067 __func__ and __self__. The factory PyMethod_New takes only func and
1068 instance as argument.
Christian Heimesff737952007-11-27 10:40:20 +00001069
Georg Brandl52b92cc2008-05-25 09:43:03 +00001070- intobject.h is no longer included by Python.h. The remains were
1071 moved to longobject.h. It still exists to define several aliases
1072 from PyInt_ to PyLong_ functions.
Christian Heimesf78b1c62007-12-02 16:52:32 +00001073
Christian Heimesa37d4c62007-12-04 23:02:19 +00001074- Removed sys.maxint, use sys.maxsize instead.
1075
Fred Drake0e474a82007-10-11 18:01:43 +00001076Extension Modules
1077-----------------
1078
1079- The `hotshot` profiler has been removed; use `cProfile` instead.
1080
Brett Cannone9fd2312007-10-12 19:18:19 +00001081Library
1082-------
1083
Georg Brandl52b92cc2008-05-25 09:43:03 +00001084- When loading an external file using testfile(), the passed-in
1085 encoding argument was being ignored if __loader__ is defined and
1086 forcing the source to be UTF-8.
Brett Cannone9fd2312007-10-12 19:18:19 +00001087
Georg Brandl52b92cc2008-05-25 09:43:03 +00001088- The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have
1089 been removed in favor of the tempfile module.
Guido van Rossum687b9c02007-10-25 23:18:51 +00001090
Christian Heimesc9543e42007-11-28 08:28:28 +00001091- Removed the 'new' module.
1092
Georg Brandl52b92cc2008-05-25 09:43:03 +00001093- Removed all types from the 'types' module that are easily accessable
1094 through builtins.
Brett Cannone9fd2312007-10-12 19:18:19 +00001095
Georg Brandl52d168a2008-01-07 18:10:24 +00001096
Guido van Rossum4405cf32007-08-30 17:16:55 +00001097What's New in Python 3.0a1?
Guido van Rossum45aecf42006-03-15 04:58:47 +00001098==========================
Thomas Wouters4d70c3d2006-06-08 14:42:34 +00001099
Guido van Rossum4405cf32007-08-30 17:16:55 +00001100*Release date: 31-Aug-2007*
Neal Norwitz4886cc32006-08-21 17:06:07 +00001101
1102Core and Builtins
1103-----------------
1104
Martin v. Löwis47383402007-08-15 07:32:56 +00001105- PEP 3131: Support non-ASCII identifiers.
1106
Martin v. Löwis447d33e2007-07-29 18:10:01 +00001107- PEP 3120: Change default encoding to UTF-8.
1108
Martin v. Löwis9f2e3462007-07-21 17:22:18 +00001109- PEP 3123: Use proper C inheritance for PyObject.
1110
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001111- Removed the __oct__ and __hex__ special methods and added a bin()
1112 builtin function.
1113
Georg Brandl52b92cc2008-05-25 09:43:03 +00001114- PEP 3127: octal literals now start with "0o". Old-style octal
1115 literals are invalid. There are binary literals with a prefix of
1116 "0b". This also affects int(x, 0).
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001117
Guido van Rossume7ba4952007-06-06 23:52:48 +00001118- None, True, False are now keywords.
1119
Guido van Rossum29478ef2007-05-29 00:39:44 +00001120- PEP 3119: isinstance() and issubclass() can be overridden.
1121
Guido van Rossumebe3e162007-05-17 18:20:34 +00001122- Remove BaseException.message.
1123
Guido van Rossum1bc535d2007-05-15 18:46:22 +00001124- Remove tuple parameter unpacking (PEP 3113).
1125
Georg Brandl52b92cc2008-05-25 09:43:03 +00001126- Remove the f_restricted attribute from frames. This naturally leads
1127 to the removal of PyEval_GetRestricted() and PyFrame_IsRestricted().
Guido van Rossuma8add0e2007-05-14 22:03:55 +00001128
Georg Brandl52b92cc2008-05-25 09:43:03 +00001129- PEP 3132 was accepted. That means that you can do ``a, *b =
1130 range(5)`` to assign 0 to a and [1, 2, 3, 4] to b.
Guido van Rossum0368b722007-05-11 16:50:42 +00001131
Georg Brandl52b92cc2008-05-25 09:43:03 +00001132- range() now returns an iterator rather than a list. Floats are not
1133 allowed. xrange() is no longer defined.
Guido van Rossum805365e2007-05-07 22:24:25 +00001134
Nick Coghlan650f0d02007-04-15 12:05:43 +00001135- Patch #1660500: hide iteration variable in list comps, add set comps
Georg Brandl52b92cc2008-05-25 09:43:03 +00001136 and use common code to handle compilation of iterative expressions.
Nick Coghlan650f0d02007-04-15 12:05:43 +00001137
Guido van Rossume27dc722007-03-27 22:37:34 +00001138- By default, != returns the opposite of ==, unless the latter returns
1139 NotImplemented.
1140
Georg Brandl52b92cc2008-05-25 09:43:03 +00001141- Patch #1680961: sys.exitfunc has been removed and replaced with a
1142 private C-level API.
Collin Winter670e6922007-03-21 02:57:17 +00001143
Georg Brandl801dd732007-03-18 20:18:31 +00001144- PEP 3115: new metaclasses: the metaclass is now specified as a
Georg Brandl52b92cc2008-05-25 09:43:03 +00001145 keyword arg in the class statement, which can now use the full
1146 syntax of a parameter list. Also, the metaclass can implement a
1147 __prepare__ function which will be called to create the dictionary
1148 for the new class namespace.
Georg Brandl801dd732007-03-18 20:18:31 +00001149
Georg Brandl428f0642007-03-18 18:35:15 +00001150- The long-deprecated argument "pend" of PyFloat_FromString() has been
1151 removed.
1152
Georg Brandle32b4222007-03-10 22:13:27 +00001153- The dir() function has been extended to call the __dir__() method on
Georg Brandl52b92cc2008-05-25 09:43:03 +00001154 its argument, if it exists. If not, it will work like before. This
1155 allows customizing the output of dir() in the presence of a
1156 __getattr__().
Brett Cannonba7bf492007-02-27 00:15:55 +00001157
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001158- Removed support for __members__ and __methods__.
1159
Georg Brandle32b4222007-03-10 22:13:27 +00001160- Removed indexing/slicing on BaseException.
Neal Norwitz2633c692007-02-26 22:22:47 +00001161
Georg Brandle32b4222007-03-10 22:13:27 +00001162- input() became raw_input(): the name input() now implements the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001163 functionality formerly known as raw_input(); the name raw_input() is
1164 no longer defined.
Guido van Rossum0240b922007-02-26 21:23:50 +00001165
Georg Brandl52b92cc2008-05-25 09:43:03 +00001166- Classes listed in an 'except' clause must inherit from
1167 BaseException.
Brett Cannonf74225d2007-02-26 21:10:16 +00001168
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001169- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
Guido van Rossumcf1be882007-08-30 22:07:17 +00001170 and .keys(), .items(), .values() return dict views, which behave
1171 like sets.
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001172
Guido van Rossum8b545362007-02-09 23:52:14 +00001173- PEP 3105: print is now a function. Also (not in the PEP) the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001174 'softspace' attribute of files is now gone (since print() doesn't
1175 use it). A side effect of this change is that you can get
1176 incomplete output lines in interactive sessions:
Guido van Rossum8b545362007-02-09 23:52:14 +00001177
1178 >>> print(42, end="")
Kurt B. Kaiser2c7f3142007-08-30 21:52:19 +00001179 42>>>
Guido van Rossum8b545362007-02-09 23:52:14 +00001180
1181 We may be able to fix this after the I/O library rewrite.
Guido van Rossum4502c802007-02-09 05:42:38 +00001182
Brett Cannon398db8b2007-01-29 23:44:37 +00001183- PEP 3102: keyword-only arguments.
1184
Georg Brandl52b92cc2008-05-25 09:43:03 +00001185- Int/Long unification is complete. The 'long' built-in type and
1186 literals with trailing 'L' or 'l' have been removed. Performance
1187 may be sub-optimal (haven't really benchmarked).
Guido van Rossumab186842007-01-14 03:42:30 +00001188
1189- 'except E, V' must now be spelled as 'except E as V' and deletes V
1190 at the end of the except clause; V must be a simple name.
1191
Neal Norwitzc1505362006-12-28 06:47:50 +00001192- Added function annotations per PEP 3107.
1193
Georg Brandl52b92cc2008-05-25 09:43:03 +00001194- Added nonlocal declaration from PEP 3104:
Jeremy Hyltona4f9fc62007-02-27 15:53:28 +00001195
1196 >>> def f(x):
1197 ... def inc():
1198 ... nonlocal x
1199 ... x += 1
1200 ... return x
1201 ... return inc
1202 ...
1203 >>> inc = f(0)
1204 >>> inc()
1205 1
1206 >>> inc()
1207 2
1208
Georg Brandl66a796e2006-12-19 20:50:34 +00001209- Moved intern() to sys.intern().
1210
1211- exec is now a function.
1212
1213- Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__.
Jack Diederich4dafcc42006-11-28 19:15:13 +00001214
Neal Norwitz4886cc32006-08-21 17:06:07 +00001215- Classic classes are a thing of the past. All classes are new style.
1216
1217- Exceptions *must* derive from BaseException.
1218
1219- Integer division always returns a float. The -Q option is no more.
1220 All the following are gone:
1221 * PyNumber_Divide and PyNumber_InPlaceDivide
1222 * __div__, __rdiv__, and __idiv__
1223 * nb_divide, nb_inplace_divide
1224 * operator.div, operator.idiv, operator.__div__, operator.__idiv__
1225 (Only __truediv__ and __floordiv__ remain, not sure how to handle them
1226 if we want to re-use __div__ and friends. If we do, it will make
1227 it harder to write code for both 2.x and 3.x.)
1228
1229- 'as' and 'with' are keywords.
1230
1231- Absolute import is the default behavior for 'import foo' etc.
1232
Georg Brandl52b92cc2008-05-25 09:43:03 +00001233- Removed support for syntax: backticks (ie, `x`), <>.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001234
Georg Brandl52b92cc2008-05-25 09:43:03 +00001235- Removed these Python builtins: apply(), callable(), coerce(),
1236 execfile(), file(), reduce(), reload().
Neal Norwitz4886cc32006-08-21 17:06:07 +00001237
Georg Brandl52b92cc2008-05-25 09:43:03 +00001238- Removed these Python methods: {}.has_key.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001239
Georg Brandl52b92cc2008-05-25 09:43:03 +00001240- Removed these opcodes: BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001241
1242- Remove C API support for restricted execution.
1243
Guido van Rossumcf1be882007-08-30 22:07:17 +00001244- zip(), map() and filter() now return iterators, behaving like their
Georg Brandl52b92cc2008-05-25 09:43:03 +00001245 itertools counterparts. This also affect map()'s behavior on
Guido van Rossumcf1be882007-08-30 22:07:17 +00001246 sequences of unequal length -- it now stops after the shortest one
1247 is exhausted.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001248
Georg Brandl52b92cc2008-05-25 09:43:03 +00001249- Additions: set literals, set comprehensions, ellipsis literal.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001250
1251- Added class decorators per PEP 3129.
1252
1253
1254Extension Modules
1255-----------------
1256
Georg Brandl52b92cc2008-05-25 09:43:03 +00001257- Removed the imageop module. Obsolete long with its unit tests
1258 becoming useless from the removal of rgbimg and imgfile.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001259
Georg Brandl52b92cc2008-05-25 09:43:03 +00001260- Removed these attributes from the operator module: div, idiv,
1261 __div__, __idiv__, isCallable, sequenceIncludes.
1262
1263- Removed these attributes from the sys module: exc_clear(), exc_type,
1264 exc_value, exc_traceback.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001265
1266
1267Library
1268-------
1269
Georg Brandl52b92cc2008-05-25 09:43:03 +00001270- Removed the compiler package. Use of the _ast module and (an
1271 eventual) AST -> bytecode mechanism.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001272
Georg Brandl52b92cc2008-05-25 09:43:03 +00001273- Removed these modules: audiodev, Bastion, bsddb185, exceptions,
1274 linuxaudiodev, md5, MimeWriter, mimify, popen2, rexec, sets, sha,
1275 stringold, strop, sunaudiodev, timing, xmllib.
Guido van Rossum33d26892007-08-05 15:29:28 +00001276
Georg Brandl52b92cc2008-05-25 09:43:03 +00001277- Moved the toaiff module to Tools/Demos.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001278
Georg Brandl52b92cc2008-05-25 09:43:03 +00001279- Removed obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL,
1280 DEVICE, ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile,
1281 IOCTL, jpeg, panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001282
Georg Brandl52b92cc2008-05-25 09:43:03 +00001283- Removed obsolete functions: commands.getstatus(), os.popen*().
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001284
Georg Brandl52b92cc2008-05-25 09:43:03 +00001285- Removed functions in the string module that are also string methods;
Martin v. Löwis967f1e32007-08-14 09:23:10 +00001286 Remove string.{letters, lowercase, uppercase}.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001287
Georg Brandl52b92cc2008-05-25 09:43:03 +00001288- Removed support for long obsolete platforms: plat-aix3, plat-irix5.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001289
Georg Brandl52b92cc2008-05-25 09:43:03 +00001290- Removed xmlrpclib.SlowParser. It was based on xmllib.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001291
1292- Patch #1680961: atexit has been reimplemented in C.
1293
Walter Dörwald41980ca2007-08-16 21:55:45 +00001294- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
1295
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001296Build
1297-----
1298
1299C API
1300-----
1301
Georg Brandl52b92cc2008-05-25 09:43:03 +00001302- Removed these Python slots: __coerce__, __div__, __idiv__, __rdiv__.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001303
Georg Brandl52b92cc2008-05-25 09:43:03 +00001304- Removed these C APIs: PyNumber_Coerce(), PyNumber_CoerceEx(),
1305 PyMember_Get, PyMember_Set.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001306
Georg Brandl52b92cc2008-05-25 09:43:03 +00001307- Removed these C slots/fields: nb_divide, nb_inplace_divide.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001308
Georg Brandl52b92cc2008-05-25 09:43:03 +00001309- Removed these macros: staticforward, statichere, PyArg_GetInt,
1310 PyArg_NoArgs, _PyObject_Del.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001311
Georg Brandl52b92cc2008-05-25 09:43:03 +00001312- Removed these typedefs: intargfunc, intintargfunc, intobjargproc,
1313 intintobjargproc, getreadbufferproc, getwritebufferproc,
1314 getsegcountproc, getcharbufferproc, memberlist.
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001315
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001316Tests
1317-----
1318
Brett Cannone7a30f72008-03-03 03:36:27 +00001319- Removed test.testall as test.regrtest replaces it.
1320
Brett Cannonced04e02005-02-13 22:53:22 +00001321Documentation
1322-------------
1323
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001324Mac
1325---
1326
Georg Brandl52b92cc2008-05-25 09:43:03 +00001327- The cfmfile module was removed.
Guido van Rossume7ba4952007-06-06 23:52:48 +00001328
Guido van Rossum845702c2007-08-30 18:44:53 +00001329Platforms
1330---------
1331
1332- Support for BeOS and AtheOS was removed (according to PEP 11).
1333
1334- Support for RiscOS, Irix, Tru64 was removed (alledgedly).
1335
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001336Tools/Demos
1337-----------
1338
Georg Brandl52b92cc2008-05-25 09:43:03 +00001339
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001340**(For information about older versions, consult the HISTORY file.)**