blob: afc3982686638d9fcb45df7d0ecaf29d1976ed56 [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
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000031
32What's New in Python 3.0 release candidate 3?
33=============================================
Barry Warsawa7c37302008-11-07 03:46:33 +000034
Barry Warsaw43baef42008-11-21 01:18:21 +000035*Release date: 20-Nov-2008*
Barry Warsawa7c37302008-11-07 03:46:33 +000036
Benjamin Peterson6570d072008-11-07 03:51:42 +000037
Barry Warsawa7c37302008-11-07 03:46:33 +000038Core and Builtins
39-----------------
40
Benjamin Peterson4f39d222008-11-18 22:37:15 +000041- Issue #4349: sys.path included a non-existent platform directory because of a
42 faulty Makefile.
43
Martin v. Löwis276c3712008-11-17 16:22:11 +000044- Issue #3327: Don't overallocate in the modules_by_index list.
45
Raymond Hettinger7d99f092008-11-16 11:44:54 +000046- Issue #1721812: Binary set operations and copy() returned the input type
Brett Cannon58425d32008-11-21 00:17:53 +000047 instead of the appropriate base type. This was incorrect because set
Raymond Hettinger7d99f092008-11-16 11:44:54 +000048 subclasses would be created without their __init__() method being called.
49 The corrected behavior brings sets into line with lists and dicts.
50
Mark Dickinson4a1f5932008-11-12 23:23:36 +000051- Issue #4296: Fix PyObject_RichCompareBool so that "x in [x]" evaluates to
52 True, even when x doesn't compare equal to itself. This was a regression
53 from 2.6.
54
Amaury Forgeot d'Arc9a5499b2008-11-11 23:04:59 +000055- Issue #3705: Command-line arguments were not correctly decoded when the
56 terminal does not use UTF8.
57
Barry Warsawa7c37302008-11-07 03:46:33 +000058Library
59-------
60
Amaury Forgeot d'Arcb0c29162008-11-22 22:18:04 +000061- Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
62 the ctypes module is not present.
63
Benjamin Peterson44309e62008-11-22 00:41:45 +000064- FileIO's mode attribute now always includes ``"b"``.
65
Brett Cannon58425d32008-11-21 00:17:53 +000066- Issue #3799: Fix dbm.dumb to accept strings as well as bytes for keys. String
67 keys are now written out in UTF-8.
68
Amaury Forgeot d'Arc836b6702008-11-20 23:53:46 +000069- Issue #4338: Fix distutils upload command.
70
Martin v. Löwis2d1ca2d2008-11-20 16:21:55 +000071- Issue #4354: Fix distutils register command.
72
Martin v. Löwis22d297b2008-11-19 09:14:30 +000073- Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
74
Benjamin Peterson3d4ca742008-11-12 21:39:01 +000075- Issue #4307: The named tuple that ``inspect.getfullargspec()`` returns now
76 uses ``kwonlydefaults`` instead of ``kwdefaults``.
77
Amaury Forgeot d'Arc3e4e72f2008-11-11 20:05:06 +000078- Issue #4298: Fix a segfault when pickle.loads is passed a ill-formed input.
79
80- Issue #4283: Fix a left-over "iteritems" call in distutils.
Georg Brandlda066062008-11-08 15:15:57 +000081
Martin v. Löwisbfda5442008-11-07 18:54:51 +000082Build
83-----
84
Martin v. Löwisa632a752008-11-19 13:55:07 +000085- Issue #4289: Remove Cancel button from AdvancedDlg.
86
Martin v. Löwisbfda5442008-11-07 18:54:51 +000087- Issue #1656675: Register a drop handler for .py* files on Windows.
88
Benjamin Peterson06fd5f82008-11-08 17:24:34 +000089Tools/Demos
90-----------
91
92- Demos of the socketserver module now work with Python 3.
93
Barry Warsawa7c37302008-11-07 03:46:33 +000094
Barry Warsaw1f0e67e2008-11-06 03:29:32 +000095What's New in Python 3.0 release candidate 2
96============================================
Guido van Rossumf0af3e32008-10-02 18:55:37 +000097
Barry Warsaw1f0e67e2008-11-06 03:29:32 +000098*Release date: 05-Nov-2008*
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +000099
100Core and Builtins
101-----------------
102
Benjamin Petersond968e272008-11-05 22:48:33 +0000103- Issue #4211: The __path__ attribute of frozen packages is now a list instead
104 of a string as required by PEP 302.
105
Benjamin Peterson93ef79c2008-11-05 22:49:09 +0000106- Issue #3727: Fixed poplib.
Christian Heimesd3956292008-11-05 19:48:27 +0000107
Christian Heimes933238a2008-11-05 19:44:21 +0000108- Issue #3714: Fixed nntplib by using bytes where appropriate.
109
Christian Heimesfb5faf02008-11-05 19:39:50 +0000110- Issue #1210: Fixed imaplib and its documentation.
111
Christian Heimesecc42a22008-11-05 19:30:32 +0000112- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
113 method on file objects with closefd=False. The file descriptor is still
114 kept open but the file object behaves like a closed file. The ``FileIO``
115 object also got a new readonly attribute ``closefd``.
116
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000117- Issue #3626: On cygwin, starting python with a non-existent script name
118 would not display anything if the file name is only 1 character long.
119
Amaury Forgeot d'Arc424b4812008-10-30 22:25:31 +0000120- Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
121 method does not return iterators for the 4th and 5th items.
122
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000123- Issue #3723: Fixed initialization of subinterpreters.
Christian Heimes6a27efa2008-10-30 21:48:26 +0000124
Christian Heimes5833a2f2008-10-30 21:40:04 +0000125- Issue #4213: The file system encoding is now normalized by the
126 codec subsystem, for example UTF-8 is turned into utf-8.
127
Christian Heimes9c94ba42008-10-30 21:34:02 +0000128- Issue #4200: Changed the atexit module to store its state in its
129 PyModuleDef atexitmodule. This fixes a bug with multiple subinterpeters.
130
Christian Heimesfec925b2008-10-30 21:22:55 +0000131- Issue #4237: io.FileIO() was raising invalid warnings caused by
132 insufficient initialization of PyFileIOObject struct members.
133
Amaury Forgeot d'Arcf43ee812008-10-30 20:58:42 +0000134- Issue #4170: Pickling a collections.defaultdict object would crash the
135 interpreter.
136
Benjamin Peterson08a8f5f2008-10-19 14:15:00 +0000137- Issue #4146: Compilation on OpenBSD has been restored.
138
Brett Cannonda780432008-10-17 03:38:50 +0000139- Issue #3574: compile() incorrectly handled source code encoded as Latin-1.
140
Amaury Forgeot d'Arccf8016a2008-10-09 23:37:48 +0000141- Issues #2384 and #3975: Tracebacks were not correctly printed when the
142 source file contains a ``coding:`` header: the wrong line was displayed, and
143 the encoding was not respected.
144
Martin v. Löwis4e0630c2008-10-07 13:16:28 +0000145- Issue #3740: Null-initialize module state.
146
Benjamin Peterson60320cb2008-09-26 21:49:22 +0000147- Issue #3946: PyObject_CheckReadBuffer crashed on a memoryview object.
148
Amaury Forgeot d'Arcd0db98f2008-09-21 21:49:01 +0000149- Issue #1688: On Windows, the input() prompt was not correctly displayed if it
150 contains non-ascii characters.
151
Martin v. Löwis6fea2332008-09-25 04:15:27 +0000152- Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
153
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000154Library
155-------
156
Amaury Forgeot d'Arc87eee632008-10-17 20:15:53 +0000157- Issue #3664: The pickle module could segfault if a subclass of Pickler fails
158 to call the base __init__ method.
159
160- Issue #3725: telnetlib now works completely in bytes.
Benjamin Peterson3de7fb82008-10-15 20:54:24 +0000161
Martin v. Löwis33b64502008-10-15 05:58:17 +0000162- Issue #4072: Restore build_py_2to3.
163
Martin v. Löwisd8506df2008-10-06 15:19:21 +0000164- Issue #4014: Don't claim that Python has an Alpha release status, in addition
165 to claiming it is Mature.
166
Martin v. Löwis04dc25c2008-10-03 16:09:28 +0000167- Issue #3187: Add sys.setfilesystemencoding.
168
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000169- Issue #3187: Better support for "undecodable" filenames. Code by Victor
170 Stinner, with small tweaks by GvR.
171
Martin v. Löwis601149b2008-09-29 22:19:08 +0000172- Issue #3965: Allow repeated calls to turtle.Screen, by making it a
173 true singleton object.
174
Benjamin Peterson3a53fbb2008-09-27 22:04:16 +0000175- Issue #3911: ftplib.FTP.makeport() could give invalid port numbers.
176
Amaury Forgeot d'Arcb5cf3012008-09-25 22:27:43 +0000177- Issue #3929: When the database cannot be opened, dbm.open() would incorrectly
178 raise a TypeError: "'tuple' object is not callable" instead of the expected
179 dbm.error.
180
Martin v. Löwis60ebb8b2008-09-21 07:32:10 +0000181- Bug #3884: Make the turtle module toplevel again.
182
Thomas Heller1308c262008-09-24 19:01:29 +0000183- Issue #3547: Fixed ctypes structures bitfields of varying integer
184 sizes.
185
Gerhard Häring6117f422008-09-22 06:04:51 +0000186Extension Modules
187-----------------
188
189- Issue #3659: Subclasses of str didn't work as SQL parameters.
190
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000191Build
192-----
193
Martin v. Löwis900646e2008-11-06 17:30:03 +0000194- Issue #4120: Exclude manifest from extension modules in VS2008.
195
Martin v. Löwisc820eaf2008-10-17 13:47:20 +0000196- Issue #4091: Install pythonxy.dll in system32 again.
197
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000198- Issue #4018: Disable "for me" installations on Vista.
199
Martin v. Löwisb37509b2008-11-04 20:45:29 +0000200- Issue #4204: Fixed module build errors on FreeBSD 4.
201
Martin v. Löwis33b64502008-10-15 05:58:17 +0000202Tools/Demos
203-----------
204
Martin v. Löwis869bad92008-10-17 15:54:44 +0000205- Issue #3717: Fix Demo/embed/demo.c.
206
Martin v. Löwis33b64502008-10-15 05:58:17 +0000207- Issue #4072: Add a distutils demo for build_py_2to3.
208
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000209
Barry Warsaw8509df72008-08-21 03:02:47 +0000210What's New in Python 3.0 release candidate 1
211============================================
212
Barry Warsawb8854802008-09-18 03:00:28 +0000213*Release date: 17-Sep-2008*
Barry Warsaw8509df72008-08-21 03:02:47 +0000214
215Core and Builtins
216-----------------
217
Benjamin Peterson5e19e442008-09-10 21:47:03 +0000218- Issue #3827: memoryview lost its size attribute in favor of using len(view).
219
Hirokazu Yamamoto167b12b2008-09-09 14:01:25 +0000220- Issue #3813: could not lanch python.exe via symbolic link on cygwin.
221
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000222- Issue #3705: fix crash when given a non-ascii value on the command line for
Amaury Forgeot d'Arc8530e852008-09-09 07:28:22 +0000223 the "-c" and "-m" parameters. Now the behaviour is as expected under Linux,
224 although under Windows it fails at a later point.
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000225
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000226- Issue #3279: Importing site at interpreter was failing silently because the
227 site module uses the open builtin which was not initialized at the time.
228
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000229- Issue #3660: Corrected a reference leak in str.encode() when the encoder
230 does not return a bytes object.
231
232- Issue #3774: Added a few more checks in PyTokenizer_FindEncoding to handle
Amaury Forgeot d'Arc1b933ed2008-09-04 22:34:09 +0000233 error conditions.
234
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000235- Issue #3594: Fix Parser/tokenizer.c:fp_setreadl() to open the file being
Brett Cannon8a9583e2008-09-04 05:04:25 +0000236 tokenized by either a file path or file pointer for the benefit of
237 PyTokenizer_FindEncoding().
238
Antoine Pitroufff95302008-09-03 18:58:51 +0000239- Issue #3696: Error parsing arguments on OpenBSD <= 4.4 and Cygwin. On
240 these systems, the mbstowcs() function is slightly buggy and must be
241 replaced with strlen() for the purpose of counting of number of wide
242 characters needed to represent the multi-byte character string.
243
Antoine Pitrou658fad82008-09-03 18:34:34 +0000244- Issue #3697: "Fatal Python error: Cannot recover from stack overflow"
245 could be easily encountered under Windows in debug mode when exercising
246 the recursion limit checking code, due to bogus handling of recursion
247 limit when USE_STACKCHEK was enabled.
248
Brett Cannon54bd41d2008-09-02 04:01:42 +0000249- Issue 3639: The _warnings module could segfault the interpreter when
250 unexpected types were passed in as arguments.
251
Antoine Pitrouc6b09eb2008-09-01 15:10:14 +0000252- Issue #3712: The memoryview object had a reference leak and didn't support
253 cyclic garbage collection.
254
Antoine Pitrouf71995782008-08-29 18:37:05 +0000255- Issue #3668: Fix a memory leak with the "s*" argument parser in
256 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
257 was correctly parsed but parsing of subsequent arguments failed.
258
Amaury Forgeot d'Arcdb26f7c2008-08-29 07:13:32 +0000259- Issue #3611: An exception __context__ could be cleared in a complex pattern
260 involving a __del__ method re-raising an exception.
261
Antoine Pitrouec569b72008-08-26 22:40:48 +0000262- Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
263 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
264 mechanism. In the process, fix a bug where isinstance() and issubclass(),
265 when given a tuple of classes as second argument, were looking up
266 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
267 type object.
268
Antoine Pitroue2dffc02008-08-26 22:02:58 +0000269- Issue #3663: Py_None was decref'd when printing SyntaxErrors.
270
Benjamin Peterson9edd2bd2008-08-27 00:31:37 +0000271- Issue #3651: Fix various memory leaks when using the buffer
272 interface, or when the "s#" code of PyArg_ParseTuple is given a
273 bytes object.
274
Neal Norwitz6ae2eb22008-08-24 23:50:08 +0000275- Issue #3657: Fix uninitialized memory read when pickling longs.
276 Found by valgrind.
277
Neal Norwitz3ce5d922008-08-24 07:08:55 +0000278- Apply security patches from Apple.
279
Neal Norwitz2f99b242008-08-24 05:48:10 +0000280- Fix crashes on memory allocation failure found with failmalloc.
281
282- Fix memory leaks found with valgrind and update suppressions file.
283
284- Fix compiler warnings in opt mode which would lead to invalid memory reads.
285
286- Fix problem using wrong name in decimal module reported by pychecker.
287
Amaury Forgeot d'Arc20443f32008-08-22 22:05:20 +0000288- Issue #3650: Fixed a reference leak in bytes.split('x').
289
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000290- bytes(o) now tries to use o.__bytes__() before using fallbacks.
291
Gregory P. Smith207f2112008-09-07 06:29:10 +0000292- Issue #1204: The configure script now tests for additional libraries
293 that may be required when linking against readline. This fixes issues
294 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
295
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000296C API
297-----
298
299- PyObject_Bytes and PyBytes_FromObject were added.
300
Barry Warsaw8509df72008-08-21 03:02:47 +0000301Library
302-------
303
Guido van Rossum698280d2008-09-10 17:44:35 +0000304- Issue #3756: make re.escape() handle bytes as well as str.
305
Georg Brandl7cd67cc2008-09-09 19:31:25 +0000306- Issue #3800: fix filter() related bug in formatter.py.
307
Antoine Pitrou5fe291f2008-09-06 23:00:03 +0000308- Issue #874900: fix behaviour of threading module after a fork.
309
Antoine Pitrou9e4fdf42008-09-05 23:43:02 +0000310- Issue #3535: zipfile couldn't read some zip files larger than 2GB.
311
312- Issue #3776: Deprecate the bsddb package for removal in 3.0.
313
314- Issue #3762: platform.architecture() fails if python is lanched via
315 its symbolic link.
316
Antoine Pitroud79dc622008-09-05 00:03:33 +0000317- Issue #3660: fix a memory leak in the C accelerator of the pickle module.
318
Antoine Pitrou1d6a16b2008-09-04 21:32:09 +0000319- Issue #3160: the "bdist_wininst" distutils command didn't work.
320
Guilherme Polob212b752008-09-04 11:21:31 +0000321- Issue #1658: tkinter changes dict size during iteration in both
322 tkinter.BaseWidget and tkinter.scrolledtext.ScrolledText.
323
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000324- The bsddb module (and therefore the dbm.bsd module) has been removed.
Gregory P. Smith451e99b2008-09-04 04:46:48 +0000325 It is now maintained outside of the standard library at
326 http://www.jcea.es/programacion/pybsddb.htm.
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000327
Facundo Batistac469d4c2008-09-03 22:49:01 +0000328- Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
329 to the urlparse one. Added a DeprecationWarning in the old module, it
330 will be deprecated in the future.
331
Marc-André Lemburg7b2b1f92008-09-02 12:10:46 +0000332- Issue #3719: platform.architecture() fails if there are spaces in the
333 path to the Python binary.
334
Brett Cannonec92e182008-09-02 02:46:59 +0000335- Issue 3602: As part of the merge of r66135, make the parameters on
336 warnings.catch_warnings() keyword-only. Also remove a DeprecationWarning.
337
Benjamin Petersonb3085c92008-09-01 23:09:31 +0000338- The deprecation warnings for the camelCase threading API names were removed.
339
Jesse Noller338f5782008-09-03 18:22:19 +0000340- Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
341 SEM_VALUE_MAX.
342
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000343Extension Modules
344-----------------
345
Antoine Pitrou9cadb1b2008-09-15 23:02:56 +0000346- Issue #3782: os.write() must not accept unicode strings.
347
Amaury Forgeot d'Arcd8976f12008-09-02 23:22:56 +0000348- Issue #2975: When compiling several extension modules with Visual Studio 2008
349 from the same python interpreter, some environment variables would grow
350 without limit.
351
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000352- Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
353 exploitation of poor argument checking.
354
Jesus Cea6ba33292008-08-31 14:12:11 +0000355- bsddb code updated to version 4.7.3pre2. This code is the same than
356 Python 2.6 one, since the intention is to keep an unified 2.x/3.x codebase.
357 The Python code is automatically translated using "2to3". Please, do not
358 update this code in Python 3.0 by hand. Update the 2.6 one and then
359 do "2to3".
360
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000361- The _bytesio and _stringio modules are now compiled into the python binary.
362
Gregory P. Smith693fc462008-09-06 20:13:06 +0000363- Issue #3492 and #3790: Fixed the zlib module and zipimport module uses of
364 mutable bytearray objects where they should have been using immutable bytes.
365
Gregory P. Smith0a608fd2008-09-06 21:34:51 +0000366- Issue #3797: Fixed the dbm, marshal, mmap, ossaudiodev, & winreg modules to
367 return bytes objects instead of bytearray objects.
368
Gregory P. Smith693fc462008-09-06 20:13:06 +0000369
Neal Norwitz8f2f22a2008-08-24 20:59:23 +0000370Tools/Demos
371-----------
372
373- Fix Misc/gdbinit so it works.
374
Barry Warsaw8509df72008-08-21 03:02:47 +0000375
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000376Build
377-----
378
Hirokazu Yamamoto54a1cc62008-09-09 17:55:11 +0000379- Issue #3812: Failed to build python if configure --without-threads.
380
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000381- Issue #3791: Remove the bsddb module from the Windows installer, and the
382 core bsddb library from the Windows build files.
383
384
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000385What's new in Python 3.0b3?
386===========================
387
Barry Warsaw57c10582008-08-21 02:39:51 +0000388*Release date: 20-Aug-2008*
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000389
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000390Core and Builtins
391-----------------
392
Benjamin Petersonbc74e5b2008-08-23 20:19:17 +0000393- Issue #3653: Fix a segfault when sys.excepthook was called with invalid
394 arguments.
395
Antoine Pitrou616d2852008-08-19 22:09:34 +0000396- Issue #2394: implement more of the memoryview API, with the caveat that
397 only one-dimensional contiguous buffers are supported and exercised right
398 now. Slicing, slice assignment and comparison (equality and inequality)
399 have been added. Also, the tolist() method has been implemented, but only
400 for byte buffers. Endly, the API has been updated to return bytes objects
401 wherever it used to return bytearrays.
402
Antoine Pitrouee58fa42008-08-19 18:22:14 +0000403- Issue #3560: clean up the new C PyMemoryView API so that naming is
404 internally consistent; add macros PyMemoryView_GET_BASE() and
405 PyMemoryView_GET_BUFFER() to access useful properties of a memory views
406 without relying on a particular implementation; remove the ill-named
407 PyMemoryView() function (PyMemoryView_GET_BUFFER() can be used instead).
408
Thomas Hellerf5049fc2008-08-19 19:49:49 +0000409- ctypes function pointers that are COM methods have a boolean True
410 value again.
411
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000412- Issue #1819: function calls with several named parameters are now on
413 average 35% faster (as measured by pybench).
414
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000415- The undocumented C APIs PyUnicode_AsString() and
416 PyUnicode_AsStringAndSize() were made private to the interpreter, in
417 order to be able to refine their interfaces for Python 3.1.
418
419 If you need to access the UTF-8 representation of a Unicode object
420 as bytes string, please use PyUnicode_AsUTF8String() instead.
421
Antoine Pitrouaf14b792008-08-07 21:50:41 +0000422- Issue #3460: PyUnicode_Join() implementation is 10% to 80% faster thanks
423 to Python 3.0's stricter semantics which allow to avoid successive
424 reallocations of the result string (this also affects str.join()).
425
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000426
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000427Library
428-------
429
Hye-Shik Chang50d1f792008-08-23 08:03:03 +0000430- Issue #1276: Added temporary aliases for CJK Mac encodings to resolve
431 a build problem on MacOS with CJK locales. It adds four temporary
432 mappings to existing legacy codecs that are virtually compatible
433 with Mac encodings. They will be replaced by codecs correctly
434 implemented in 3.1.
435
Amaury Forgeot d'Arc41e36672008-08-20 21:35:50 +0000436- Issue #3614: Corrected a typo in xmlrpc.client, leading to a NameError
437 "global name 'header' is not defined".
438
Antoine Pitroufd036452008-08-19 17:56:33 +0000439- Issue #2834: update the regular expression library to match the unicode
440 standards of py3k. In other words, mixing bytes and unicode strings
441 (be it as pattern, search string or replacement string) raises a TypeError.
442 Moreover, the re.UNICODE flag is enabled automatically for unicode patterns,
443 and can be disabled by specifying a new re.ASCII flag; as for bytes
444 patterns, ASCII matching is the only option and trying to specify re.UNICODE
445 for such patterns raises a ValueError.
446
Guido van Rossum52dbbb92008-08-18 21:44:30 +0000447- Issue #3300: make urllib.parse.[un]quote() default to UTF-8.
448 Code contributed by Matt Giuca. quote() now encodes the input
449 before quoting, unquote() decodes after unquoting. There are
450 new arguments to change the encoding and errors settings.
451 There are also new APIs to skip the encode/decode steps.
452 [un]quote_plus() are also affected.
453
Nick Coghlan36f49522008-08-18 12:31:52 +0000454- Issue #2235: numbers.Number now blocks inheritance of the default id()
455 based hash because that hash mechanism is not correct for numeric types.
456 All concrete numeric types that inherit from Number (rather than just
457 registering with it) must explicitly provide a hash implementation in
458 order for their instances to be hashable.
459
Benjamin Peterson4cd6a952008-08-17 20:23:46 +0000460- Issue #2676: in the email package, content-type parsing was hanging on
461 pathological input because of quadratic or exponential behaviour of a
462 regular expression.
463
Antoine Pitrou87695762008-08-14 22:44:29 +0000464- Issue #3476: binary buffered reading through the new "io" library is now
465 thread-safe.
466
Robert Schuppenies3d1c7de2008-08-10 11:28:17 +0000467- Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
468 menu entries were not deleted.
469
Lars Gustäbel0c24e8b2008-08-02 11:43:24 +0000470- Remove the TarFileCompat class from tarfile.py.
471
Amaury Forgeot d'Arcbdbddf82008-08-01 00:06:49 +0000472- Issue #2491: os.fdopen is now almost an alias for the built-in open(), and
473 accepts the same parameters. It just checks that its first argument is an
474 integer.
475
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000476- Issue #3394: zipfile.writestr sets external attributes when passed a
477 file name rather than a ZipInfo instance, so files are extracted with
478 mode 0600 rather than 000 under Unix.
479
Antoine Pitrouc66f9092008-07-28 19:46:11 +0000480- Issue #2523: Fix quadratic behaviour when read()ing a binary file without
481 asking for a specific length.
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000482
Martin v. Löwis371bb502008-08-16 13:02:57 +0000483Extension Modules
484-----------------
485
486- Bug #3542: Support Unicode strings in _msi module.
487
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000488What's new in Python 3.0b2?
489===========================
490
Barry Warsaw4bd1cef2008-07-18 02:28:44 +0000491*Release date: 17-Jul-2008*
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000492
493Core and Builtins
494-----------------
495
Mark Dickinson65fe25e2008-07-16 11:30:51 +0000496- Issue #3008: the float type has a new instance method 'float.hex'
497 and a new class method 'float.fromhex' to convert floating-point
498 numbers to and from hexadecimal strings, respectively.
499
Eric Smithd68af8f2008-07-16 00:15:35 +0000500- Issue #3083: Add alternate (#) formatting for bin, oct, hex output
501 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
502
Amaury Forgeot d'Arca4db6862008-07-04 21:26:43 +0000503- Issue #3280: like chr(), the "%c" format now accepts unicode code points
504 beyond the Basic Multilingual Plane (above 0xffff) on all configurations. On
505 "narrow Unicode" builds, the result is a string of 2 code units, forming a
506 UTF-16 surrogate pair.
507
Georg Brandld52429f2008-07-04 15:55:02 +0000508- Issue #3282: str.isprintable() should return False for undefined
509 Unicode characters.
510
Martin v. Löwis029656f2008-06-30 04:06:08 +0000511- Issue #3236: Return small longs from PyLong_FromString.
512
Benjamin Petersone6528212008-07-15 15:32:09 +0000513- Exception tracebacks now support exception chaining.
514
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000515Library
516-------
517
Brett Cannonc2542e92008-07-25 18:19:20 +0000518- Removed the sunaudio module. Use sunau instead.
519
Thomas Heller47bc8092008-08-19 06:38:12 +0000520- Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
521 api functions without holding the GIL, which could lead to a fatal
522 error when they failed.
523
524- Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
525
Georg Brandl30704ea02008-07-23 15:07:12 +0000526- Removed "ast" function aliases from the parser module.
527
Thomas Heller15383a02008-07-15 19:46:52 +0000528- Issue #3313: Fixed a crash when a failed dlopen() call does not set
529 a valid dlerror() message.
530
Thomas Heller0261e1e2008-07-15 17:25:07 +0000531- Issue #3258: Fixed a crash when a ctypes POINTER type to an
532 incomplete structure was created.
533
Georg Brandl1abcbf82008-07-01 19:28:43 +0000534- Issue #2683: Fix inconsistency in subprocess.Popen.communicate(): the
535 argument now must be a bytes object in any case.
536
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000537- Issue #3145: help("modules whatever") failed when trying to load the source
538 code of every single module of the standard library, including invalid files
539 used in the test suite.
540
Georg Brandlbded4d32008-07-17 18:15:35 +0000541- The gettext library now consistently uses Unicode strings for message ids
542 and message strings, and ``ugettext()`` and the like don't exist anymore.
Benjamin Peterson801844d2008-07-14 14:32:15 +0000543
Benjamin Petersone6528212008-07-15 15:32:09 +0000544- The traceback module has been expanded to handle chained exceptions.
545
Amaury Forgeot d'Arc612f61f2008-07-02 23:02:21 +0000546C API
547-----
548
549- Issue #3247: the function Py_FindMethod was removed. Modern types should
550 use the tp_methods slot instead.
551
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000552Tools/Demos
553-----------
554
Georg Brandl336341f2008-07-01 20:21:28 +0000555- The Mac/Demos directory has been removed.
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000556
Georg Brandl336341f2008-07-01 20:21:28 +0000557- All of the Mac scripts have been removed (including BuildApplet.py).
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000558
559
Brett Cannon0d71ee72008-05-08 18:13:40 +0000560What's new in Python 3.0b1?
561===========================
562
Barry Warsawc1e689e2008-06-19 00:35:43 +0000563*Release date: 18-Jun-2008*
Brett Cannon0d71ee72008-05-08 18:13:40 +0000564
565Core and Builtins
566-----------------
567
Brett Cannondb734912008-06-27 00:52:15 +0000568- Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
569 argument being anything other than a dict or None. Also fixed a bug in error
570 handling when 'message' and 'category' were both set to None, triggering a
571 bus error.
572
Amaury Forgeot d'Arcc856c7a2008-06-16 19:50:09 +0000573- Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
574 holds the last (strong) reference to its referent.
575
Georg Brandl559e5d72008-06-11 18:37:52 +0000576- Issue #2630: implement PEP 3138. repr() now returns printable
577 Unicode characters unescaped, to get an ASCII-only representation
578 of an object use ascii().
579
Amaury Forgeot d'Arcf1ca0b12008-06-11 17:40:47 +0000580- Issue #1342: On windows, Python could not start when installed in a
581 directory with non-ascii characters.
582
Martin v. Löwis1a214512008-06-11 05:26:20 +0000583- Implement PEP 3121: new module initialization and finalization API.
584
Georg Brandle1b5ac62008-06-04 13:06:58 +0000585- Removed the already-defunct ``-t`` option.
586
Amaury Forgeot d'Arc74c71f52008-05-26 21:41:42 +0000587- Issue #2957: Corrected a ValueError "recursion limit exceeded", when
588 unmarshalling many code objects, which happens when importing a
589 large .pyc file (~1000 functions).
590
Georg Brandl52b92cc2008-05-25 09:43:03 +0000591- Issue #2963: fix merging oversight that disabled method cache for
592 all types.
Georg Brandl1bcf35a2008-05-25 09:32:09 +0000593
Georg Brandlc9b09532008-05-25 09:24:38 +0000594- Issue #2964: fix a missing INCREF in instancemethod_descr_get.
595
Georg Brandl52b92cc2008-05-25 09:43:03 +0000596- Issue #2895: Don't crash when given bytes objects as keyword names.
Georg Brandld8b690f2008-05-16 17:28:50 +0000597
Georg Brandl52b92cc2008-05-25 09:43:03 +0000598- Issue #2798: When parsing arguments with PyArg_ParseTuple, the "s"
599 code now allows any unicode string and returns a utf-8 encoded
600 buffer, just like the "s#" code already does. The "z" code was
601 corrected as well.
Amaury Forgeot d'Arc07404592008-05-12 13:19:07 +0000602
Georg Brandl52b92cc2008-05-25 09:43:03 +0000603- Issue #2863: generators now have a ``gen.__name__`` attribute that
604 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
605 ``func.func_code.co_name``. The repr() of a generator now also
606 contains this name.
Alexandre Vassalottie9f305f2008-05-16 04:39:54 +0000607
608- Issue #2831: enumerate() now has a ``start`` argument.
609
Georg Brandl52b92cc2008-05-25 09:43:03 +0000610- Issue #2801: fix bug in the float.is_integer method where a
611 ValueError was sometimes incorrectly raised.
Mark Dickinsonc4352b02008-05-09 13:55:01 +0000612
Georg Brandl52b92cc2008-05-25 09:43:03 +0000613- The ``--with-toolbox-glue`` option (and the associated
614 pymactoolbox.h) have been removed.
Benjamin Peterson79629ab2008-05-14 21:07:12 +0000615
Georg Brandl52b92cc2008-05-25 09:43:03 +0000616- Issue #2196: hasattr() now lets exceptions which do not inherit
617 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
618 ignoring them.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000619
Benjamin Petersoneec3d712008-06-11 15:59:43 +0000620- #3021 Exception reraising sematics have been significantly improved. However,
621 f_exc_type, f_exc_value, and f_exc_traceback cannot be accessed from Python
622 code anymore.
623
Benjamin Peterson4f92ca42008-06-11 20:21:57 +0000624- Three of PyNumberMethods' members, nb_coerce, nb_hex, and nb_oct, have been
625 removed.
626
Brett Cannon0d71ee72008-05-08 18:13:40 +0000627Extension Modules
628-----------------
629
Georg Brandl38feaf02008-05-25 07:45:51 +0000630- Renamed ``_winreg`` module to ``winreg``.
631
Georg Brandl52b92cc2008-05-25 09:43:03 +0000632- Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
633 platform.
Alexandre Vassalottibee32532008-05-16 18:15:12 +0000634
635- Support for Windows 9x has been removed from the winsound module.
636
Georg Brandl52b92cc2008-05-25 09:43:03 +0000637- Issue #2870: cmathmodule.c compile error.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000638
Brett Cannon0d71ee72008-05-08 18:13:40 +0000639Library
640-------
641
Benjamin Peterson87069fd2008-08-20 02:00:14 +0000642- The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
643 symtable.Symbol have been removed.
644
Amaury Forgeot d'Arccb0d2d72008-06-18 22:19:22 +0000645- Patch #3133: http.server.CGIHTTPRequestHandler did not work on windows.
646
Jeremy Hylton1afc1692008-06-18 20:49:58 +0000647- a new ``urllib`` package was created. It consists of code from
648 ``urllib``, ``urllib2``, ``urlparse``, and ``robotparser``. The old
649 modules have all been removed. The new package has five submodules:
650 ``urllib.parse``, ``urllib.request``, ``urllib.response``,
651 ``urllib.error``, and ``urllib.robotparser``. The
652 ``urllib.request.urlopen()`` function uses the url opener from
653 ``urllib2``. (Note that the unittests have not been renamed for the
654 beta, but they will be renamed in the future.)
655
Benjamin Petersona0c0a4a2008-06-12 22:15:50 +0000656- rfc822 has been removed in favor of the email package.
657
Benjamin Peterson425ea7f2008-06-12 14:11:35 +0000658- mimetools has been removed in favor of the email package.
Benjamin Peterson23c51a22008-06-12 14:06:57 +0000659
Barry Warsawf5019422008-06-12 02:42:00 +0000660- Patch #2849: Remove use of rfc822 module from standard library.
661
Alexandre Vassalotti794652d2008-06-11 22:58:36 +0000662- Added C optimized implementation of io.StringIO.
663
Alexandre Vassalottica2d6102008-06-12 18:26:05 +0000664- The ``pickle`` module is now automatically use an optimized C
665 implementation of Pickler and Unpickler when available. The
666 ``cPickle`` module is no longer needed.
667
Georg Brandl877b10a2008-06-01 21:25:55 +0000668- Removed the ``htmllib`` and ``sgmllib`` modules.
669
Georg Brandl61013952008-05-28 15:56:30 +0000670- The deprecated ``SmartCookie`` and ``SimpleCookie`` classes have
671 been removed from ``http.cookies``.
672
Brett Cannona23810f2008-05-26 19:04:21 +0000673- The ``commands`` module has been removed. Its getoutput() and
674 getstatusoutput() functions have been moved to the ``subprocess`` module.
675
Georg Brandl3d5c4252008-05-26 18:03:26 +0000676- The ``http`` package was created; it contains the old ``httplib``
677 as ``http.client``, ``Cookie`` as ``http.cookies``, ``cookielib``
678 as ``http.cookiejar``, and the content of the three ``HTTPServer``
679 modules as ``http.server``.
680
Georg Brandl38eceaa2008-05-26 11:14:17 +0000681- The ``xmlrpc`` package was created; it contains the old
682 ``xmlrpclib`` module as ``xmlrpc.client`` and the content of
683 the old ``SimpleXMLRPCServer`` and ``DocXMLRPCServer`` modules
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000684 as ``xmlrpc.server``.
Georg Brandl38eceaa2008-05-26 11:14:17 +0000685
686- The ``dbm`` package was created, containing the old modules
687 ``anydbm`` and ``whichdb`` in its ``__init__.py``, and having
688 ``dbm.gnu`` (was ``gdbm``), ``dbm.bsd`` (was ``dbhash``),
689 ``dbm.ndbm`` (was ``dbm``) and ``dbm.dumb`` (was ``dumbdbm``)
690 as submodules.
691
Georg Brandl52b92cc2008-05-25 09:43:03 +0000692- The ``repr`` module has been renamed to ``reprlib``.
Alexandre Vassalotti1f2ba4b2008-05-16 07:12:44 +0000693
Georg Brandl52b92cc2008-05-25 09:43:03 +0000694- The ``statvfs`` module has been removed.
Brett Cannonacbb7862008-05-16 00:42:57 +0000695
Georg Brandl52b92cc2008-05-25 09:43:03 +0000696- Issue #1713041: fix pprint's handling of maximum depth.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000697
Georg Brandl52b92cc2008-05-25 09:43:03 +0000698- Issue #2250: Exceptions raised during evaluation of names in
699 rlcompleter's ``Completer.complete()`` method are now caught and
700 ignored.
Alexandre Vassalotti8ae3e052008-05-16 00:41:41 +0000701
Georg Brandl52b92cc2008-05-25 09:43:03 +0000702- Patch #2659: Added ``break_on_hyphens`` option to textwrap's
703 ``TextWrapper`` class.
Alexandre Vassalotti1d1eaa42008-05-14 22:59:42 +0000704
Alexandre Vassalotti6461e102008-05-15 22:09:29 +0000705- Issue #2487: change the semantics of math.ldexp(x, n) when n is too
706 large to fit in a C long. ldexp(x, n) now returns a zero (with
707 suitable sign) if n is large and negative; previously, it raised
708 OverflowError.
709
Georg Brandl52b92cc2008-05-25 09:43:03 +0000710- The ``ConfigParser`` module has been renamed to ``configparser``.
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000711
Georg Brandl52b92cc2008-05-25 09:43:03 +0000712- Issue #2865: webbrowser.open() works again in a KDE environment.
Amaury Forgeot d'Arc2b2b44d2008-05-12 14:41:00 +0000713
Georg Brandl52b92cc2008-05-25 09:43:03 +0000714- The ``multifile`` module has been removed.
Brett Cannond3343cb2008-05-12 03:18:21 +0000715
Georg Brandl52b92cc2008-05-25 09:43:03 +0000716- The ``SocketServer`` module has been renamed to ``socketserver``.
Alexandre Vassalottice261952008-05-12 02:31:37 +0000717
Georg Brandl52b92cc2008-05-25 09:43:03 +0000718- Fixed the ``__all__`` setting on ``collections`` to include
719 ``UserList`` and ``UserString``.
Brett Cannon23a4a7b2008-05-12 00:56:28 +0000720
Brett Cannoncf3520c2008-05-11 22:47:58 +0000721- The sre module has been removed.
722
Alexandre Vassalottif260e442008-05-11 19:59:59 +0000723- The Queue module has been renamed to queue.
724
Alexandre Vassalottif7fa63d2008-05-11 08:55:36 +0000725- The copy_reg module has been renamed to copyreg.
726
Brett Cannond8b61ee2008-05-11 03:00:26 +0000727- The mhlib module has been removed.
728
Brett Cannonbd474422008-05-10 22:42:14 +0000729- The ihooks module has been removed.
730
Brett Cannonb59a2bd2008-05-10 22:03:16 +0000731- The fpformat module has been removed.
732
Brett Cannonf4fd9932008-05-10 21:11:46 +0000733- The dircache module has been removed.
734
Brett Cannond175b4c2008-05-10 03:19:54 +0000735- The Canvas module has been removed.
736
Mark Dickinsonb27406c2008-05-09 13:42:33 +0000737- The Decimal module gained the magic methods __round__, __ceil__,
738 __floor__ and __trunc__, to give support for round, math.ceil,
739 math.floor and math.trunc.
740
Brett Cannon900ee3a2008-05-08 20:31:11 +0000741- The user module has been removed.
742
Brett Cannon34afe872008-05-08 20:31:44 +0000743- The mutex module has been removed.
744
Brett Cannon0d71ee72008-05-08 18:13:40 +0000745- The imputil module has been removed.
746
Georg Brandl52b92cc2008-05-25 09:43:03 +0000747- os.path.walk has been removed in favor of os.walk.
Benjamin Petersond71ca412008-05-08 23:44:58 +0000748
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000749- pdb gained the "until" command.
750
Georg Brandl52b92cc2008-05-25 09:43:03 +0000751- The test.test_support module has been renamed to test.support.
Benjamin Petersonee8712c2008-05-20 21:35:26 +0000752
Georg Brandl32de7af2008-08-18 23:07:41 +0000753- The threading module API was renamed to be PEP 8 compliant. The
754 old names are still present, but will be removed in the near future.
Benjamin Peterson672b8032008-06-11 19:14:14 +0000755
Georg Brandl294d5a92008-06-01 19:25:32 +0000756Tools/Demos
757-----------
758
759- The bgen tool has been removed.
Benjamin Peterson630c8292008-06-01 18:50:38 +0000760
Brett Cannon0d71ee72008-05-08 18:13:40 +0000761Build
762-----
763
764
Barry Warsaw66079cd2008-04-04 01:36:36 +0000765What's New in Python 3.0a5?
766===========================
767
Barry Warsaw9eab8b02008-05-08 13:05:38 +0000768*Release date: 08-May-2008*
Barry Warsaw66079cd2008-04-04 01:36:36 +0000769
770Core and Builtins
771-----------------
772
Georg Brandl52b92cc2008-05-25 09:43:03 +0000773- Fixed misbehaviour of PyLong_FromSsize_t on systems where
774 sizeof(size_t) > sizeof(long).
Mark Dickinson7ab6be22008-04-15 21:42:42 +0000775
Georg Brandl52b92cc2008-05-25 09:43:03 +0000776- Issue #2221: Corrected a SystemError "error return without exception
777 set", when the code executed by exec() raises an exception, and
778 sys.stdout.flush() also raises an error.
Amaury Forgeot d'Arc7fedbe52008-04-10 21:03:09 +0000779
Georg Brandl52b92cc2008-05-25 09:43:03 +0000780- Bug #2565: The repr() of type objects now calls them 'class', not
781 'type' - whether they are builtin types or not.
Martin v. Löwis250ad612008-04-07 05:43:42 +0000782
Martin v. Löwis790465f2008-04-05 20:41:37 +0000783- The command line processing was converted to pass Unicode strings
784 through as unmodified as possible; as a consequence, the C API
785 related to command line arguments was changed to use wchar_t.
786
Georg Brandl52b92cc2008-05-25 09:43:03 +0000787- All backslashes in raw strings are interpreted literally. This
788 means that '\u' and '\U' escapes are not treated specially.
Benjamin Petersona2f837f2008-04-28 21:05:10 +0000789
Barry Warsaw66079cd2008-04-04 01:36:36 +0000790Extension Modules
791-----------------
792
793Library
794-------
795
Georg Brandl52b92cc2008-05-25 09:43:03 +0000796- ctypes objects now support the PEP3118 buffer interface.
Thomas Hellerb041fda2008-04-30 17:11:46 +0000797
Thomas Hellere106dc32008-04-24 18:39:36 +0000798- Issue #2682: ctypes callback functions now longer contain a cyclic
799 reference to themselves.
800
Georg Brandl52b92cc2008-05-25 09:43:03 +0000801- Issue #2058: Remove the buf attribute and add __slots__ to the
802 TarInfo class in order to reduce tarfile's memory usage.
Lars Gustäbelc2ea8c62008-04-14 10:05:48 +0000803
Martin v. Löwis8efc62c2008-04-10 19:02:25 +0000804- Bug #2606: Avoid calling .sort() on a dict_keys object.
805
Thomas Hellerbff533b2008-04-04 19:53:14 +0000806- The bundled libffi copy is now in sync with the recently released
807 libffi3.0.5 version, apart from some small changes to
808 Modules/_ctypes/libffi/configure.ac.
809
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000810Build
811-----
812
Mark Dickinsonb0e2b4c2008-04-26 20:48:56 +0000813- Issue #1496032: On alpha, use -mieee when gcc is the compiler.
814
Guido van Rossumdc21db32008-04-07 18:37:41 +0000815- "make install" is now an alias for "make altinstall", to prevent
Georg Brandl52b92cc2008-05-25 09:43:03 +0000816 accidentally overwriting a Python 2.x installation. Use "make
817 fullinstall" to force Python 3.0 to be installed as "python".
Guido van Rossumdc21db32008-04-07 18:37:41 +0000818
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000819- Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
820 gcc is used as compiler.
Barry Warsaw66079cd2008-04-04 01:36:36 +0000821
Georg Brandl52b92cc2008-05-25 09:43:03 +0000822
Barry Warsawa9d499d2008-03-01 18:38:07 +0000823What's New in Python 3.0a4?
824===========================
825
Barry Warsawbb5cd082008-04-02 23:33:27 +0000826*Release date: 02-Apr-2008*
Barry Warsawa9d499d2008-03-01 18:38:07 +0000827
Martin v. Löwis25931462008-03-17 20:43:42 +0000828Core and Builtins
829-----------------
830
831- Bug #2301: Don't try decoding the source code into the original
832 encoding for syntax errors.
833
Martin v. Löwis92fab752008-03-08 10:40:41 +0000834Extension Modules
835-----------------
836
Neal Norwitz6cf49cf2008-03-24 06:22:57 +0000837- The dl module was removed, use the ctypes module instead.
838
Martin v. Löwis92fab752008-03-08 10:40:41 +0000839- Use wchar_t functions in _locale module.
Barry Warsawa9d499d2008-03-01 18:38:07 +0000840
Martin v. Löwis071ef772008-03-08 11:24:24 +0000841Library
842-------
843
Georg Brandl52b92cc2008-05-25 09:43:03 +0000844- The class distutils.commands.build_py.build_py_2to3 can be used as a
845 build_py replacement to automatically run 2to3 on modules that are
846 going to be installed.
Martin v. Löwis73a22f02008-03-22 00:35:10 +0000847
Guido van Rossumf4169812008-03-17 22:56:06 +0000848- A new pickle protocol (protocol 3) is added with explicit support
849 for bytes. This is the default protocol. It intentionally cannot
850 be unpickled by Python 2.x.
851
852- When a pickle written by Python 2.x contains an (8-bit) str
853 instance, this is now decoded to a (Unicode) str instance. The
854 encoding used to do this defaults to ASCII, but can be overridden
855 via two new keyword arguments to the Unpickler class. Previously
856 this would create bytes instances, which is usually wrong: str
857 instances are often used to pickle attribute names etc., and text is
858 more common than binary data anyway.
859
Martin v. Löwis071ef772008-03-08 11:24:24 +0000860- Default to ASCII as the locale.getpreferredencoding, if the POSIX
Georg Brandl52b92cc2008-05-25 09:43:03 +0000861 system doesn't support CODESET and LANG isn't set or doesn't allow
862 deduction of an encoding.
Martin v. Löwis071ef772008-03-08 11:24:24 +0000863
Georg Brandl52b92cc2008-05-25 09:43:03 +0000864- Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned
865 value.
Gregory P. Smith425136b2008-03-17 20:45:21 +0000866
Georg Brandl52b92cc2008-05-25 09:43:03 +0000867- Issue #719888: Updated tokenize to use a bytes API. generate_tokens
868 has been renamed tokenize and now works with bytes rather than
869 strings. A new detect_encoding function has been added for
870 determining source file encoding according to PEP-0263. Token
871 sequences returned by tokenize always start with an ENCODING token
872 which specifies the encoding used to decode the file. This token is
873 used to encode the output of untokenize back to bytes.
874
Barry Warsawa9d499d2008-03-01 18:38:07 +0000875
Christian Heimesbc873412007-12-08 22:11:32 +0000876What's New in Python 3.0a3?
877===========================
878
Barry Warsaw659fc422008-03-01 17:45:23 +0000879*Release date: 29-Feb-2008*
Christian Heimesbc873412007-12-08 22:11:32 +0000880
881Core and Builtins
882-----------------
883
Georg Brandl52b92cc2008-05-25 09:43:03 +0000884- Issue #2282: io.TextIOWrapper was not overriding seekable() from
885 io.IOBase.
Ka-Ping Yeeddaa7062008-03-17 20:35:15 +0000886
Georg Brandl52b92cc2008-05-25 09:43:03 +0000887- Issue #2115: Important speedup in setting __slot__ attributes. Also
888 prevent a possible crash: an Abstract Base Class would try to access
889 a slot on a registered virtual subclass.
Christian Heimesa156e092008-02-16 07:38:31 +0000890
Georg Brandl52b92cc2008-05-25 09:43:03 +0000891- Fixed repr() and str() of complex numbers with infinity or nan as
892 real or imaginary part.
Christian Heimesa156e092008-02-16 07:38:31 +0000893
Georg Brandl52b92cc2008-05-25 09:43:03 +0000894- Clear all free list during a gc.collect() of the highest generation
895 in order to allow pymalloc to free more arenas. Python may give back
896 memory to the OS earlier.
Christian Heimesa156e092008-02-16 07:38:31 +0000897
Georg Brandl52b92cc2008-05-25 09:43:03 +0000898- Issue #2045: Fix an infinite recursion triggered when printing a
899 subclass of collections.defaultdict, if its default_factory is set
900 to a bound method.
Christian Heimesa156e092008-02-16 07:38:31 +0000901
902- Fixed a minor memory leak in dictobject.c. The content of the free
903 list was not freed on interpreter shutdown.
904
Georg Brandl52b92cc2008-05-25 09:43:03 +0000905- Limit free list of method and builtin function objects to 256
906 entries each.
Christian Heimesa156e092008-02-16 07:38:31 +0000907
Georg Brandl52b92cc2008-05-25 09:43:03 +0000908- Patch #1953: Added ``sys._compact_freelists()`` and the C API
909 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
Christian Heimesa156e092008-02-16 07:38:31 +0000910 to compact the internal free lists of pre-allocted ints and floats.
911
912- Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls.
Georg Brandl52b92cc2008-05-25 09:43:03 +0000913 Python expected the return type int but the fork familie returns
914 pi_t.
Christian Heimesa156e092008-02-16 07:38:31 +0000915
Georg Brandl52b92cc2008-05-25 09:43:03 +0000916- Issue #1678380: Fix a bug that identifies 0j and -0j when they
917 appear in the same code unit.
Christian Heimesa156e092008-02-16 07:38:31 +0000918
Georg Brandl52b92cc2008-05-25 09:43:03 +0000919- Issue #2025: Added tuple.count() and tuple.index() methods to comply
920 with the collections.Sequence API.
Raymond Hettinger65baa342008-02-07 00:41:02 +0000921
Georg Brandl52b92cc2008-05-25 09:43:03 +0000922- Fixed multiple reinitialization of the Python interpreter. The small
923 int list in longobject.c has caused a seg fault during the third
924 finalization.
Christian Heimesdfc12ed2008-01-31 15:16:38 +0000925
Georg Brandl52b92cc2008-05-25 09:43:03 +0000926- Issue #1973: bytes.fromhex('') raised SystemError.
Christian Heimesc04dac02008-01-30 11:27:57 +0000927
Georg Brandl52b92cc2008-05-25 09:43:03 +0000928- Issue #1771: remove cmp parameter from sorted() and list.sort().
Raymond Hettinger70b64fc2008-01-30 20:15:17 +0000929
Georg Brandl52b92cc2008-05-25 09:43:03 +0000930- Issue #1969: split and rsplit in bytearray are inconsistent.
Christian Heimes7b876152008-01-30 09:51:48 +0000931
Georg Brandl52b92cc2008-05-25 09:43:03 +0000932- map() no longer accepts None for the first argument. Use zip()
933 instead.
Raymond Hettinger1dfde1d2008-01-22 23:25:35 +0000934
Facundo Batista2336bdd2008-01-19 19:12:01 +0000935- Issue #1769: Now int("- 1") is not allowed any more.
936
Georg Brandl52b92cc2008-05-25 09:43:03 +0000937- Object/longobject.c: long(float('nan')) raises an OverflowError
938 instead of returning 0.
Christian Heimes386cd1e2008-01-15 02:01:20 +0000939
Georg Brandl52b92cc2008-05-25 09:43:03 +0000940- Issue #1762972: __file__ points to the source file instead of the
941 pyc/pyo file if the py file exists.
Christian Heimes3b06e532008-01-07 20:12:44 +0000942
Guido van Rossumab078dd2008-01-06 00:09:11 +0000943- Issue #1393: object_richcompare() returns NotImplemented instead of
944 False if the objects aren't equal, to give the other side a chance.
945
Guido van Rossume239b002008-01-06 00:44:20 +0000946- Issue #1692: Interpreter was not displaying location of SyntaxError.
Kurt B. Kaiser43b15092008-01-05 04:32:22 +0000947
Georg Brandl52b92cc2008-05-25 09:43:03 +0000948- Improve some exception messages when Windows fails to load an
949 extension module. Now we get for example '%1 is not a valid Win32
950 application' instead of 'error code 193'. Also use Unicode strings
951 to deal with non-English locales.
Amaury Forgeot d'Arcbccd63c2008-01-04 01:21:27 +0000952
Georg Brandl52b92cc2008-05-25 09:43:03 +0000953- Issue #1587: Added instancemethod wrapper for PyCFunctions. The
954 Python C API has gained a new type *PyInstanceMethod_Type* and the
955 functions *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)*
956 and *PyInstanceMethod_Function(im)*.
Christian Heimesa3534a62007-12-11 19:56:40 +0000957
Georg Brandl52b92cc2008-05-25 09:43:03 +0000958- Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed
959 from the gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE
960 are now enough to print the corresponding list of objects considered
961 by the garbage collector.
Amaury Forgeot d'Arcad8dcd52007-12-10 23:58:35 +0000962
Georg Brandl52b92cc2008-05-25 09:43:03 +0000963- Issue #1573: Improper use of the keyword-only syntax makes the
964 parser crash.
Christian Heimesbc873412007-12-08 22:11:32 +0000965
Georg Brandl52b92cc2008-05-25 09:43:03 +0000966- Issue #1564: The set implementation should special-case PyUnicode
967 instead of PyString.
Christian Heimes0ded5b52007-12-10 15:50:56 +0000968
Guido van Rossumea6775b2008-02-21 20:16:31 +0000969- Patch #1031213: Decode source line in SyntaxErrors back to its
970 original source encoding.
Christian Heimes7131fd92008-02-19 14:21:46 +0000971
Christian Heimes09aaa882008-02-23 15:01:06 +0000972- inspect.getsource() includes the decorators again.
973
Guido van Rossumea6775b2008-02-21 20:16:31 +0000974- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a
975 mountpoint.
Christian Heimes7131fd92008-02-19 14:21:46 +0000976
Georg Brandl52b92cc2008-05-25 09:43:03 +0000977- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
978 the first chunk fed to the decoder started with a BOM, but was
979 longer than 3 bytes.
Christian Heimes7131fd92008-02-19 14:21:46 +0000980
Christian Heimesbc873412007-12-08 22:11:32 +0000981Extension Modules
982-----------------
983
Georg Brandl52b92cc2008-05-25 09:43:03 +0000984- Code for itertools ifilter(), imap(), and izip() moved to bultins
985 and renamed to filter(), map(), and zip(). Also, renamed
986 izip_longest() to zip_longest() and ifilterfalse() to filterfalse().
Raymond Hettinger736c0ab2008-03-13 02:09:15 +0000987
Georg Brandl52b92cc2008-05-25 09:43:03 +0000988- Issue #1762972: Readded the reload() function as imp.reload().
Guido van Rossumea6775b2008-02-21 20:16:31 +0000989
Georg Brandl52b92cc2008-05-25 09:43:03 +0000990- Bug #2111: mmap segfaults when trying to write a block opened with
991 PROT_READ.
Christian Heimesa156e092008-02-16 07:38:31 +0000992
Georg Brandl52b92cc2008-05-25 09:43:03 +0000993- Issue #2063: correct order of utime and stime in os.times() result
994 on Windows.
Christian Heimes7131fd92008-02-19 14:21:46 +0000995
Christian Heimesbc873412007-12-08 22:11:32 +0000996Library
997-------
998
Raymond Hettinger48b8b662008-02-05 01:53:00 +0000999- Weakref dictionaries now inherit from MutableMapping.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001000
Georg Brandl52b92cc2008-05-25 09:43:03 +00001001- Created new UserDict class in collections module. This one inherits
1002 from and complies with the MutableMapping ABC. Also, moved
1003 UserString and UserList to the collections module. The
1004 MutableUserString class was removed.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001005
Guido van Rossumea6775b2008-02-21 20:16:31 +00001006- Removed UserDict.DictMixin. Replaced all its uses with
1007 collections.MutableMapping.
Raymond Hettingeredf3b732008-02-04 22:07:15 +00001008
Guido van Rossume239b002008-01-06 00:44:20 +00001009- Issue #1703: getpass() should flush after writing prompt.
Christian Heimesfc5aa9d2007-12-11 09:00:01 +00001010
Guido van Rossume239b002008-01-06 00:44:20 +00001011- Issue #1585: IDLE uses non-existent xrange() function.
1012
1013- Issue #1578: Problems in win_getpass.
1014
Georg Brandl52d168a2008-01-07 18:10:24 +00001015Build
1016-----
1017
Georg Brandl52b92cc2008-05-25 09:43:03 +00001018- Renamed --enable-unicode configure flag to --with-wide-unicode,
1019 since Unicode strings can't be disabled anymore.
Georg Brandl52d168a2008-01-07 18:10:24 +00001020
Guido van Rossume239b002008-01-06 00:44:20 +00001021C API
1022-----
1023
1024- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
1025 Py_TYPE and Py_REFCNT.
1026
Georg Brandl52b92cc2008-05-25 09:43:03 +00001027- New API PyImport_ImportModuleNoBlock(), works like
1028 PyImport_ImportModule() but won't block on the import lock
1029 (returning an error instead).
Christian Heimes0ec88b32007-12-10 17:02:00 +00001030
Christian Heimesbc873412007-12-08 22:11:32 +00001031
Fred Drake0e474a82007-10-11 18:01:43 +00001032What's New in Python 3.0a2?
Christian Heimesbc873412007-12-08 22:11:32 +00001033===========================
Fred Drake0e474a82007-10-11 18:01:43 +00001034
Guido van Rossum99533a92007-12-06 05:07:41 +00001035*Release date: 07-Dec-2007*
1036
1037(Note: this list is incomplete.)
Fred Drake0e474a82007-10-11 18:01:43 +00001038
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001039Core and Builtins
1040-----------------
1041
Brett Cannon37f7e6e2007-10-26 05:42:09 +00001042- str8 now has the same construction signature as bytes.
1043
Georg Brandl52b92cc2008-05-25 09:43:03 +00001044- Comparisons between str and str8 now return False/True for ==/!=.
1045 sqlite3 returns str8 when recreating on object from it's __conform__
1046 value. The struct module returns str8 for all string-related
1047 formats. This was true before this change, but becomes more
1048 apparent thanks to string comparisons always being False.
Brett Cannon40430012007-10-22 20:24:51 +00001049
Georg Brandl52b92cc2008-05-25 09:43:03 +00001050- Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode,
1051 buffer, encoding, newline)`.
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001052
1053- Fixed `imp.find_module()` to obey the -*- coding: -*- header.
1054
1055- Changed `__file__` and `co_filename` to unicode. The path names are decoded
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +00001056 with `Py_FileSystemDefaultEncoding` and a new API method
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001057 `PyUnicode_DecodeFSDefault(char*)` was added.
1058
Georg Brandl52b92cc2008-05-25 09:43:03 +00001059- io.open() and _fileio.FileIO have grown a new argument closefd. A
1060 false value disables the closing of the file descriptor.
Guido van Rossum2dced8b2007-10-30 17:27:30 +00001061
Georg Brandl52b92cc2008-05-25 09:43:03 +00001062- Added a new option -b to issues warnings (-bb for errors) about
1063 certain operations between bytes/buffer and str like str(b'') and
1064 comparison.
Guido van Rossum98297ee2007-11-06 21:34:58 +00001065
Georg Brandl52b92cc2008-05-25 09:43:03 +00001066- The standards streams sys.stdin, stdout and stderr may be None when
1067 the when the C runtime library returns an invalid file descriptor
1068 for the streams (fileno(stdin) < 0). For now this happens only for
1069 Windows GUI apps and scripts started with `pythonw.exe`.
Christian Heimes58cb1b82007-11-13 02:19:40 +00001070
Christian Heimesbce52be2007-11-17 19:08:41 +00001071- Added PCbuild9 directory for VS 2008.
1072
Georg Brandl52b92cc2008-05-25 09:43:03 +00001073- Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to
1074 work around a name clash with VS 2008 on Windows.
Christian Heimesbce52be2007-11-17 19:08:41 +00001075
Georg Brandl52b92cc2008-05-25 09:43:03 +00001076- Unbound methods are gone for good. ClassObject.method returns an
1077 ordinary function object, instance.method still returns a bound
1078 method object. The API of bound methods is cleaned up, too. The
1079 im_class attribute is removed and im_func + im_self are renamed to
1080 __func__ and __self__. The factory PyMethod_New takes only func and
1081 instance as argument.
Christian Heimesff737952007-11-27 10:40:20 +00001082
Georg Brandl52b92cc2008-05-25 09:43:03 +00001083- intobject.h is no longer included by Python.h. The remains were
1084 moved to longobject.h. It still exists to define several aliases
1085 from PyInt_ to PyLong_ functions.
Christian Heimesf78b1c62007-12-02 16:52:32 +00001086
Christian Heimesa37d4c62007-12-04 23:02:19 +00001087- Removed sys.maxint, use sys.maxsize instead.
1088
Fred Drake0e474a82007-10-11 18:01:43 +00001089Extension Modules
1090-----------------
1091
1092- The `hotshot` profiler has been removed; use `cProfile` instead.
1093
Brett Cannone9fd2312007-10-12 19:18:19 +00001094Library
1095-------
1096
Georg Brandl52b92cc2008-05-25 09:43:03 +00001097- When loading an external file using testfile(), the passed-in
1098 encoding argument was being ignored if __loader__ is defined and
1099 forcing the source to be UTF-8.
Brett Cannone9fd2312007-10-12 19:18:19 +00001100
Georg Brandl52b92cc2008-05-25 09:43:03 +00001101- The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have
1102 been removed in favor of the tempfile module.
Guido van Rossum687b9c02007-10-25 23:18:51 +00001103
Christian Heimesc9543e42007-11-28 08:28:28 +00001104- Removed the 'new' module.
1105
Georg Brandl52b92cc2008-05-25 09:43:03 +00001106- Removed all types from the 'types' module that are easily accessable
1107 through builtins.
Brett Cannone9fd2312007-10-12 19:18:19 +00001108
Georg Brandl52d168a2008-01-07 18:10:24 +00001109
Guido van Rossum4405cf32007-08-30 17:16:55 +00001110What's New in Python 3.0a1?
Guido van Rossum45aecf42006-03-15 04:58:47 +00001111==========================
Thomas Wouters4d70c3d2006-06-08 14:42:34 +00001112
Guido van Rossum4405cf32007-08-30 17:16:55 +00001113*Release date: 31-Aug-2007*
Neal Norwitz4886cc32006-08-21 17:06:07 +00001114
1115Core and Builtins
1116-----------------
1117
Martin v. Löwis47383402007-08-15 07:32:56 +00001118- PEP 3131: Support non-ASCII identifiers.
1119
Martin v. Löwis447d33e2007-07-29 18:10:01 +00001120- PEP 3120: Change default encoding to UTF-8.
1121
Martin v. Löwis9f2e3462007-07-21 17:22:18 +00001122- PEP 3123: Use proper C inheritance for PyObject.
1123
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001124- Removed the __oct__ and __hex__ special methods and added a bin()
1125 builtin function.
1126
Georg Brandl52b92cc2008-05-25 09:43:03 +00001127- PEP 3127: octal literals now start with "0o". Old-style octal
1128 literals are invalid. There are binary literals with a prefix of
1129 "0b". This also affects int(x, 0).
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001130
Guido van Rossume7ba4952007-06-06 23:52:48 +00001131- None, True, False are now keywords.
1132
Guido van Rossum29478ef2007-05-29 00:39:44 +00001133- PEP 3119: isinstance() and issubclass() can be overridden.
1134
Guido van Rossumebe3e162007-05-17 18:20:34 +00001135- Remove BaseException.message.
1136
Guido van Rossum1bc535d2007-05-15 18:46:22 +00001137- Remove tuple parameter unpacking (PEP 3113).
1138
Georg Brandl52b92cc2008-05-25 09:43:03 +00001139- Remove the f_restricted attribute from frames. This naturally leads
1140 to the removal of PyEval_GetRestricted() and PyFrame_IsRestricted().
Guido van Rossuma8add0e2007-05-14 22:03:55 +00001141
Georg Brandl52b92cc2008-05-25 09:43:03 +00001142- PEP 3132 was accepted. That means that you can do ``a, *b =
1143 range(5)`` to assign 0 to a and [1, 2, 3, 4] to b.
Guido van Rossum0368b722007-05-11 16:50:42 +00001144
Georg Brandl52b92cc2008-05-25 09:43:03 +00001145- range() now returns an iterator rather than a list. Floats are not
1146 allowed. xrange() is no longer defined.
Guido van Rossum805365e2007-05-07 22:24:25 +00001147
Nick Coghlan650f0d02007-04-15 12:05:43 +00001148- Patch #1660500: hide iteration variable in list comps, add set comps
Georg Brandl52b92cc2008-05-25 09:43:03 +00001149 and use common code to handle compilation of iterative expressions.
Nick Coghlan650f0d02007-04-15 12:05:43 +00001150
Guido van Rossume27dc722007-03-27 22:37:34 +00001151- By default, != returns the opposite of ==, unless the latter returns
1152 NotImplemented.
1153
Georg Brandl52b92cc2008-05-25 09:43:03 +00001154- Patch #1680961: sys.exitfunc has been removed and replaced with a
1155 private C-level API.
Collin Winter670e6922007-03-21 02:57:17 +00001156
Georg Brandl801dd732007-03-18 20:18:31 +00001157- PEP 3115: new metaclasses: the metaclass is now specified as a
Georg Brandl52b92cc2008-05-25 09:43:03 +00001158 keyword arg in the class statement, which can now use the full
1159 syntax of a parameter list. Also, the metaclass can implement a
1160 __prepare__ function which will be called to create the dictionary
1161 for the new class namespace.
Georg Brandl801dd732007-03-18 20:18:31 +00001162
Georg Brandl428f0642007-03-18 18:35:15 +00001163- The long-deprecated argument "pend" of PyFloat_FromString() has been
1164 removed.
1165
Georg Brandle32b4222007-03-10 22:13:27 +00001166- The dir() function has been extended to call the __dir__() method on
Georg Brandl52b92cc2008-05-25 09:43:03 +00001167 its argument, if it exists. If not, it will work like before. This
1168 allows customizing the output of dir() in the presence of a
1169 __getattr__().
Brett Cannonba7bf492007-02-27 00:15:55 +00001170
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001171- Removed support for __members__ and __methods__.
1172
Georg Brandle32b4222007-03-10 22:13:27 +00001173- Removed indexing/slicing on BaseException.
Neal Norwitz2633c692007-02-26 22:22:47 +00001174
Georg Brandle32b4222007-03-10 22:13:27 +00001175- input() became raw_input(): the name input() now implements the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001176 functionality formerly known as raw_input(); the name raw_input() is
1177 no longer defined.
Guido van Rossum0240b922007-02-26 21:23:50 +00001178
Georg Brandl52b92cc2008-05-25 09:43:03 +00001179- Classes listed in an 'except' clause must inherit from
1180 BaseException.
Brett Cannonf74225d2007-02-26 21:10:16 +00001181
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001182- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
Guido van Rossumcf1be882007-08-30 22:07:17 +00001183 and .keys(), .items(), .values() return dict views, which behave
1184 like sets.
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001185
Guido van Rossum8b545362007-02-09 23:52:14 +00001186- PEP 3105: print is now a function. Also (not in the PEP) the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001187 'softspace' attribute of files is now gone (since print() doesn't
1188 use it). A side effect of this change is that you can get
1189 incomplete output lines in interactive sessions:
Guido van Rossum8b545362007-02-09 23:52:14 +00001190
1191 >>> print(42, end="")
Kurt B. Kaiser2c7f3142007-08-30 21:52:19 +00001192 42>>>
Guido van Rossum8b545362007-02-09 23:52:14 +00001193
1194 We may be able to fix this after the I/O library rewrite.
Guido van Rossum4502c802007-02-09 05:42:38 +00001195
Brett Cannon398db8b2007-01-29 23:44:37 +00001196- PEP 3102: keyword-only arguments.
1197
Georg Brandl52b92cc2008-05-25 09:43:03 +00001198- Int/Long unification is complete. The 'long' built-in type and
1199 literals with trailing 'L' or 'l' have been removed. Performance
1200 may be sub-optimal (haven't really benchmarked).
Guido van Rossumab186842007-01-14 03:42:30 +00001201
1202- 'except E, V' must now be spelled as 'except E as V' and deletes V
1203 at the end of the except clause; V must be a simple name.
1204
Neal Norwitzc1505362006-12-28 06:47:50 +00001205- Added function annotations per PEP 3107.
1206
Georg Brandl52b92cc2008-05-25 09:43:03 +00001207- Added nonlocal declaration from PEP 3104:
Jeremy Hyltona4f9fc62007-02-27 15:53:28 +00001208
1209 >>> def f(x):
1210 ... def inc():
1211 ... nonlocal x
1212 ... x += 1
1213 ... return x
1214 ... return inc
1215 ...
1216 >>> inc = f(0)
1217 >>> inc()
1218 1
1219 >>> inc()
1220 2
1221
Georg Brandl66a796e2006-12-19 20:50:34 +00001222- Moved intern() to sys.intern().
1223
1224- exec is now a function.
1225
1226- Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__.
Jack Diederich4dafcc42006-11-28 19:15:13 +00001227
Neal Norwitz4886cc32006-08-21 17:06:07 +00001228- Classic classes are a thing of the past. All classes are new style.
1229
1230- Exceptions *must* derive from BaseException.
1231
1232- Integer division always returns a float. The -Q option is no more.
1233 All the following are gone:
1234 * PyNumber_Divide and PyNumber_InPlaceDivide
1235 * __div__, __rdiv__, and __idiv__
1236 * nb_divide, nb_inplace_divide
1237 * operator.div, operator.idiv, operator.__div__, operator.__idiv__
1238 (Only __truediv__ and __floordiv__ remain, not sure how to handle them
1239 if we want to re-use __div__ and friends. If we do, it will make
1240 it harder to write code for both 2.x and 3.x.)
1241
1242- 'as' and 'with' are keywords.
1243
1244- Absolute import is the default behavior for 'import foo' etc.
1245
Georg Brandl52b92cc2008-05-25 09:43:03 +00001246- Removed support for syntax: backticks (ie, `x`), <>.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001247
Georg Brandl52b92cc2008-05-25 09:43:03 +00001248- Removed these Python builtins: apply(), callable(), coerce(),
1249 execfile(), file(), reduce(), reload().
Neal Norwitz4886cc32006-08-21 17:06:07 +00001250
Georg Brandl52b92cc2008-05-25 09:43:03 +00001251- Removed these Python methods: {}.has_key.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001252
Georg Brandl52b92cc2008-05-25 09:43:03 +00001253- Removed these opcodes: BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001254
1255- Remove C API support for restricted execution.
1256
Guido van Rossumcf1be882007-08-30 22:07:17 +00001257- zip(), map() and filter() now return iterators, behaving like their
Georg Brandl52b92cc2008-05-25 09:43:03 +00001258 itertools counterparts. This also affect map()'s behavior on
Guido van Rossumcf1be882007-08-30 22:07:17 +00001259 sequences of unequal length -- it now stops after the shortest one
1260 is exhausted.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001261
Georg Brandl52b92cc2008-05-25 09:43:03 +00001262- Additions: set literals, set comprehensions, ellipsis literal.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001263
1264- Added class decorators per PEP 3129.
1265
1266
1267Extension Modules
1268-----------------
1269
Georg Brandl52b92cc2008-05-25 09:43:03 +00001270- Removed the imageop module. Obsolete long with its unit tests
1271 becoming useless from the removal of rgbimg and imgfile.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001272
Georg Brandl52b92cc2008-05-25 09:43:03 +00001273- Removed these attributes from the operator module: div, idiv,
1274 __div__, __idiv__, isCallable, sequenceIncludes.
1275
1276- Removed these attributes from the sys module: exc_clear(), exc_type,
1277 exc_value, exc_traceback.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001278
1279
1280Library
1281-------
1282
Georg Brandl52b92cc2008-05-25 09:43:03 +00001283- Removed the compiler package. Use of the _ast module and (an
1284 eventual) AST -> bytecode mechanism.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001285
Georg Brandl52b92cc2008-05-25 09:43:03 +00001286- Removed these modules: audiodev, Bastion, bsddb185, exceptions,
1287 linuxaudiodev, md5, MimeWriter, mimify, popen2, rexec, sets, sha,
1288 stringold, strop, sunaudiodev, timing, xmllib.
Guido van Rossum33d26892007-08-05 15:29:28 +00001289
Georg Brandl52b92cc2008-05-25 09:43:03 +00001290- Moved the toaiff module to Tools/Demos.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001291
Georg Brandl52b92cc2008-05-25 09:43:03 +00001292- Removed obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL,
1293 DEVICE, ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile,
1294 IOCTL, jpeg, panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001295
Georg Brandl52b92cc2008-05-25 09:43:03 +00001296- Removed obsolete functions: commands.getstatus(), os.popen*().
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001297
Georg Brandl52b92cc2008-05-25 09:43:03 +00001298- Removed functions in the string module that are also string methods;
Martin v. Löwis967f1e32007-08-14 09:23:10 +00001299 Remove string.{letters, lowercase, uppercase}.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001300
Georg Brandl52b92cc2008-05-25 09:43:03 +00001301- Removed support for long obsolete platforms: plat-aix3, plat-irix5.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001302
Georg Brandl52b92cc2008-05-25 09:43:03 +00001303- Removed xmlrpclib.SlowParser. It was based on xmllib.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001304
1305- Patch #1680961: atexit has been reimplemented in C.
1306
Walter Dörwald41980ca2007-08-16 21:55:45 +00001307- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
1308
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001309Build
1310-----
1311
1312C API
1313-----
1314
Georg Brandl52b92cc2008-05-25 09:43:03 +00001315- Removed these Python slots: __coerce__, __div__, __idiv__, __rdiv__.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001316
Georg Brandl52b92cc2008-05-25 09:43:03 +00001317- Removed these C APIs: PyNumber_Coerce(), PyNumber_CoerceEx(),
1318 PyMember_Get, PyMember_Set.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001319
Georg Brandl52b92cc2008-05-25 09:43:03 +00001320- Removed these C slots/fields: nb_divide, nb_inplace_divide.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001321
Georg Brandl52b92cc2008-05-25 09:43:03 +00001322- Removed these macros: staticforward, statichere, PyArg_GetInt,
1323 PyArg_NoArgs, _PyObject_Del.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001324
Georg Brandl52b92cc2008-05-25 09:43:03 +00001325- Removed these typedefs: intargfunc, intintargfunc, intobjargproc,
1326 intintobjargproc, getreadbufferproc, getwritebufferproc,
1327 getsegcountproc, getcharbufferproc, memberlist.
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001328
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001329Tests
1330-----
1331
Brett Cannone7a30f72008-03-03 03:36:27 +00001332- Removed test.testall as test.regrtest replaces it.
1333
Brett Cannonced04e02005-02-13 22:53:22 +00001334Documentation
1335-------------
1336
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001337Mac
1338---
1339
Georg Brandl52b92cc2008-05-25 09:43:03 +00001340- The cfmfile module was removed.
Guido van Rossume7ba4952007-06-06 23:52:48 +00001341
Guido van Rossum845702c2007-08-30 18:44:53 +00001342Platforms
1343---------
1344
1345- Support for BeOS and AtheOS was removed (according to PEP 11).
1346
1347- Support for RiscOS, Irix, Tru64 was removed (alledgedly).
1348
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001349Tools/Demos
1350-----------
1351
Georg Brandl52b92cc2008-05-25 09:43:03 +00001352
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001353**(For information about older versions, consult the HISTORY file.)**