blob: 36cfe4163bf7418da1716f571237ec178ccaa468 [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
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +000025- Issue #4383: When IDLE cannot make the connection to its subprocess, it would
26 fail to properly display the error message.
27
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000028
29What's New in Python 3.0 release candidate 3?
30=============================================
Barry Warsawa7c37302008-11-07 03:46:33 +000031
Barry Warsaw43baef42008-11-21 01:18:21 +000032*Release date: 20-Nov-2008*
Barry Warsawa7c37302008-11-07 03:46:33 +000033
Benjamin Peterson6570d072008-11-07 03:51:42 +000034
Barry Warsawa7c37302008-11-07 03:46:33 +000035Core and Builtins
36-----------------
37
Benjamin Peterson4f39d222008-11-18 22:37:15 +000038- Issue #4349: sys.path included a non-existent platform directory because of a
39 faulty Makefile.
40
Martin v. Löwis276c3712008-11-17 16:22:11 +000041- Issue #3327: Don't overallocate in the modules_by_index list.
42
Raymond Hettinger7d99f092008-11-16 11:44:54 +000043- Issue #1721812: Binary set operations and copy() returned the input type
Brett Cannon58425d32008-11-21 00:17:53 +000044 instead of the appropriate base type. This was incorrect because set
Raymond Hettinger7d99f092008-11-16 11:44:54 +000045 subclasses would be created without their __init__() method being called.
46 The corrected behavior brings sets into line with lists and dicts.
47
Mark Dickinson4a1f5932008-11-12 23:23:36 +000048- Issue #4296: Fix PyObject_RichCompareBool so that "x in [x]" evaluates to
49 True, even when x doesn't compare equal to itself. This was a regression
50 from 2.6.
51
Amaury Forgeot d'Arc9a5499b2008-11-11 23:04:59 +000052- Issue #3705: Command-line arguments were not correctly decoded when the
53 terminal does not use UTF8.
54
Barry Warsawa7c37302008-11-07 03:46:33 +000055Library
56-------
57
Amaury Forgeot d'Arcb0c29162008-11-22 22:18:04 +000058- Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
59 the ctypes module is not present.
60
Benjamin Peterson44309e62008-11-22 00:41:45 +000061- FileIO's mode attribute now always includes ``"b"``.
62
Brett Cannon58425d32008-11-21 00:17:53 +000063- Issue #3799: Fix dbm.dumb to accept strings as well as bytes for keys. String
64 keys are now written out in UTF-8.
65
Amaury Forgeot d'Arc836b6702008-11-20 23:53:46 +000066- Issue #4338: Fix distutils upload command.
67
Martin v. Löwis2d1ca2d2008-11-20 16:21:55 +000068- Issue #4354: Fix distutils register command.
69
Martin v. Löwis22d297b2008-11-19 09:14:30 +000070- Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
71
Benjamin Peterson3d4ca742008-11-12 21:39:01 +000072- Issue #4307: The named tuple that ``inspect.getfullargspec()`` returns now
73 uses ``kwonlydefaults`` instead of ``kwdefaults``.
74
Amaury Forgeot d'Arc3e4e72f2008-11-11 20:05:06 +000075- Issue #4298: Fix a segfault when pickle.loads is passed a ill-formed input.
76
77- Issue #4283: Fix a left-over "iteritems" call in distutils.
Georg Brandlda066062008-11-08 15:15:57 +000078
Martin v. Löwisbfda5442008-11-07 18:54:51 +000079Build
80-----
81
Martin v. Löwisa632a752008-11-19 13:55:07 +000082- Issue #4289: Remove Cancel button from AdvancedDlg.
83
Martin v. Löwisbfda5442008-11-07 18:54:51 +000084- Issue #1656675: Register a drop handler for .py* files on Windows.
85
Benjamin Peterson06fd5f82008-11-08 17:24:34 +000086Tools/Demos
87-----------
88
89- Demos of the socketserver module now work with Python 3.
90
Barry Warsawa7c37302008-11-07 03:46:33 +000091
Barry Warsaw1f0e67e2008-11-06 03:29:32 +000092What's New in Python 3.0 release candidate 2
93============================================
Guido van Rossumf0af3e32008-10-02 18:55:37 +000094
Barry Warsaw1f0e67e2008-11-06 03:29:32 +000095*Release date: 05-Nov-2008*
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +000096
97Core and Builtins
98-----------------
99
Benjamin Petersond968e272008-11-05 22:48:33 +0000100- Issue #4211: The __path__ attribute of frozen packages is now a list instead
101 of a string as required by PEP 302.
102
Benjamin Peterson93ef79c2008-11-05 22:49:09 +0000103- Issue #3727: Fixed poplib.
Christian Heimesd3956292008-11-05 19:48:27 +0000104
Christian Heimes933238a2008-11-05 19:44:21 +0000105- Issue #3714: Fixed nntplib by using bytes where appropriate.
106
Christian Heimesfb5faf02008-11-05 19:39:50 +0000107- Issue #1210: Fixed imaplib and its documentation.
108
Christian Heimesecc42a22008-11-05 19:30:32 +0000109- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
110 method on file objects with closefd=False. The file descriptor is still
111 kept open but the file object behaves like a closed file. The ``FileIO``
112 object also got a new readonly attribute ``closefd``.
113
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000114- Issue #3626: On cygwin, starting python with a non-existent script name
115 would not display anything if the file name is only 1 character long.
116
Amaury Forgeot d'Arc424b4812008-10-30 22:25:31 +0000117- Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
118 method does not return iterators for the 4th and 5th items.
119
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000120- Issue #3723: Fixed initialization of subinterpreters.
Christian Heimes6a27efa2008-10-30 21:48:26 +0000121
Christian Heimes5833a2f2008-10-30 21:40:04 +0000122- Issue #4213: The file system encoding is now normalized by the
123 codec subsystem, for example UTF-8 is turned into utf-8.
124
Christian Heimes9c94ba42008-10-30 21:34:02 +0000125- Issue #4200: Changed the atexit module to store its state in its
126 PyModuleDef atexitmodule. This fixes a bug with multiple subinterpeters.
127
Christian Heimesfec925b2008-10-30 21:22:55 +0000128- Issue #4237: io.FileIO() was raising invalid warnings caused by
129 insufficient initialization of PyFileIOObject struct members.
130
Amaury Forgeot d'Arcf43ee812008-10-30 20:58:42 +0000131- Issue #4170: Pickling a collections.defaultdict object would crash the
132 interpreter.
133
Benjamin Peterson08a8f5f2008-10-19 14:15:00 +0000134- Issue #4146: Compilation on OpenBSD has been restored.
135
Brett Cannonda780432008-10-17 03:38:50 +0000136- Issue #3574: compile() incorrectly handled source code encoded as Latin-1.
137
Amaury Forgeot d'Arccf8016a2008-10-09 23:37:48 +0000138- Issues #2384 and #3975: Tracebacks were not correctly printed when the
139 source file contains a ``coding:`` header: the wrong line was displayed, and
140 the encoding was not respected.
141
Martin v. Löwis4e0630c2008-10-07 13:16:28 +0000142- Issue #3740: Null-initialize module state.
143
Benjamin Peterson60320cb2008-09-26 21:49:22 +0000144- Issue #3946: PyObject_CheckReadBuffer crashed on a memoryview object.
145
Amaury Forgeot d'Arcd0db98f2008-09-21 21:49:01 +0000146- Issue #1688: On Windows, the input() prompt was not correctly displayed if it
147 contains non-ascii characters.
148
Martin v. Löwis6fea2332008-09-25 04:15:27 +0000149- Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
150
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000151Library
152-------
153
Amaury Forgeot d'Arc87eee632008-10-17 20:15:53 +0000154- Issue #3664: The pickle module could segfault if a subclass of Pickler fails
155 to call the base __init__ method.
156
157- Issue #3725: telnetlib now works completely in bytes.
Benjamin Peterson3de7fb82008-10-15 20:54:24 +0000158
Martin v. Löwis33b64502008-10-15 05:58:17 +0000159- Issue #4072: Restore build_py_2to3.
160
Martin v. Löwisd8506df2008-10-06 15:19:21 +0000161- Issue #4014: Don't claim that Python has an Alpha release status, in addition
162 to claiming it is Mature.
163
Martin v. Löwis04dc25c2008-10-03 16:09:28 +0000164- Issue #3187: Add sys.setfilesystemencoding.
165
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000166- Issue #3187: Better support for "undecodable" filenames. Code by Victor
167 Stinner, with small tweaks by GvR.
168
Martin v. Löwis601149b2008-09-29 22:19:08 +0000169- Issue #3965: Allow repeated calls to turtle.Screen, by making it a
170 true singleton object.
171
Benjamin Peterson3a53fbb2008-09-27 22:04:16 +0000172- Issue #3911: ftplib.FTP.makeport() could give invalid port numbers.
173
Amaury Forgeot d'Arcb5cf3012008-09-25 22:27:43 +0000174- Issue #3929: When the database cannot be opened, dbm.open() would incorrectly
175 raise a TypeError: "'tuple' object is not callable" instead of the expected
176 dbm.error.
177
Martin v. Löwis60ebb8b2008-09-21 07:32:10 +0000178- Bug #3884: Make the turtle module toplevel again.
179
Thomas Heller1308c262008-09-24 19:01:29 +0000180- Issue #3547: Fixed ctypes structures bitfields of varying integer
181 sizes.
182
Gerhard Häring6117f422008-09-22 06:04:51 +0000183Extension Modules
184-----------------
185
186- Issue #3659: Subclasses of str didn't work as SQL parameters.
187
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000188Build
189-----
190
Martin v. Löwis900646e2008-11-06 17:30:03 +0000191- Issue #4120: Exclude manifest from extension modules in VS2008.
192
Martin v. Löwisc820eaf2008-10-17 13:47:20 +0000193- Issue #4091: Install pythonxy.dll in system32 again.
194
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000195- Issue #4018: Disable "for me" installations on Vista.
196
Martin v. Löwisb37509b2008-11-04 20:45:29 +0000197- Issue #4204: Fixed module build errors on FreeBSD 4.
198
Martin v. Löwis33b64502008-10-15 05:58:17 +0000199Tools/Demos
200-----------
201
Martin v. Löwis869bad92008-10-17 15:54:44 +0000202- Issue #3717: Fix Demo/embed/demo.c.
203
Martin v. Löwis33b64502008-10-15 05:58:17 +0000204- Issue #4072: Add a distutils demo for build_py_2to3.
205
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000206
Barry Warsaw8509df72008-08-21 03:02:47 +0000207What's New in Python 3.0 release candidate 1
208============================================
209
Barry Warsawb8854802008-09-18 03:00:28 +0000210*Release date: 17-Sep-2008*
Barry Warsaw8509df72008-08-21 03:02:47 +0000211
212Core and Builtins
213-----------------
214
Benjamin Peterson5e19e442008-09-10 21:47:03 +0000215- Issue #3827: memoryview lost its size attribute in favor of using len(view).
216
Hirokazu Yamamoto167b12b2008-09-09 14:01:25 +0000217- Issue #3813: could not lanch python.exe via symbolic link on cygwin.
218
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000219- Issue #3705: fix crash when given a non-ascii value on the command line for
Amaury Forgeot d'Arc8530e852008-09-09 07:28:22 +0000220 the "-c" and "-m" parameters. Now the behaviour is as expected under Linux,
221 although under Windows it fails at a later point.
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000222
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000223- Issue #3279: Importing site at interpreter was failing silently because the
224 site module uses the open builtin which was not initialized at the time.
225
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000226- Issue #3660: Corrected a reference leak in str.encode() when the encoder
227 does not return a bytes object.
228
229- Issue #3774: Added a few more checks in PyTokenizer_FindEncoding to handle
Amaury Forgeot d'Arc1b933ed2008-09-04 22:34:09 +0000230 error conditions.
231
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000232- Issue #3594: Fix Parser/tokenizer.c:fp_setreadl() to open the file being
Brett Cannon8a9583e2008-09-04 05:04:25 +0000233 tokenized by either a file path or file pointer for the benefit of
234 PyTokenizer_FindEncoding().
235
Antoine Pitroufff95302008-09-03 18:58:51 +0000236- Issue #3696: Error parsing arguments on OpenBSD <= 4.4 and Cygwin. On
237 these systems, the mbstowcs() function is slightly buggy and must be
238 replaced with strlen() for the purpose of counting of number of wide
239 characters needed to represent the multi-byte character string.
240
Antoine Pitrou658fad82008-09-03 18:34:34 +0000241- Issue #3697: "Fatal Python error: Cannot recover from stack overflow"
242 could be easily encountered under Windows in debug mode when exercising
243 the recursion limit checking code, due to bogus handling of recursion
244 limit when USE_STACKCHEK was enabled.
245
Brett Cannon54bd41d2008-09-02 04:01:42 +0000246- Issue 3639: The _warnings module could segfault the interpreter when
247 unexpected types were passed in as arguments.
248
Antoine Pitrouc6b09eb2008-09-01 15:10:14 +0000249- Issue #3712: The memoryview object had a reference leak and didn't support
250 cyclic garbage collection.
251
Antoine Pitrouf71995782008-08-29 18:37:05 +0000252- Issue #3668: Fix a memory leak with the "s*" argument parser in
253 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
254 was correctly parsed but parsing of subsequent arguments failed.
255
Amaury Forgeot d'Arcdb26f7c2008-08-29 07:13:32 +0000256- Issue #3611: An exception __context__ could be cleared in a complex pattern
257 involving a __del__ method re-raising an exception.
258
Antoine Pitrouec569b72008-08-26 22:40:48 +0000259- Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
260 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
261 mechanism. In the process, fix a bug where isinstance() and issubclass(),
262 when given a tuple of classes as second argument, were looking up
263 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
264 type object.
265
Antoine Pitroue2dffc02008-08-26 22:02:58 +0000266- Issue #3663: Py_None was decref'd when printing SyntaxErrors.
267
Benjamin Peterson9edd2bd2008-08-27 00:31:37 +0000268- Issue #3651: Fix various memory leaks when using the buffer
269 interface, or when the "s#" code of PyArg_ParseTuple is given a
270 bytes object.
271
Neal Norwitz6ae2eb22008-08-24 23:50:08 +0000272- Issue #3657: Fix uninitialized memory read when pickling longs.
273 Found by valgrind.
274
Neal Norwitz3ce5d922008-08-24 07:08:55 +0000275- Apply security patches from Apple.
276
Neal Norwitz2f99b242008-08-24 05:48:10 +0000277- Fix crashes on memory allocation failure found with failmalloc.
278
279- Fix memory leaks found with valgrind and update suppressions file.
280
281- Fix compiler warnings in opt mode which would lead to invalid memory reads.
282
283- Fix problem using wrong name in decimal module reported by pychecker.
284
Amaury Forgeot d'Arc20443f32008-08-22 22:05:20 +0000285- Issue #3650: Fixed a reference leak in bytes.split('x').
286
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000287- bytes(o) now tries to use o.__bytes__() before using fallbacks.
288
Gregory P. Smith207f2112008-09-07 06:29:10 +0000289- Issue #1204: The configure script now tests for additional libraries
290 that may be required when linking against readline. This fixes issues
291 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
292
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000293C API
294-----
295
296- PyObject_Bytes and PyBytes_FromObject were added.
297
Barry Warsaw8509df72008-08-21 03:02:47 +0000298Library
299-------
300
Guido van Rossum698280d2008-09-10 17:44:35 +0000301- Issue #3756: make re.escape() handle bytes as well as str.
302
Georg Brandl7cd67cc2008-09-09 19:31:25 +0000303- Issue #3800: fix filter() related bug in formatter.py.
304
Antoine Pitrou5fe291f2008-09-06 23:00:03 +0000305- Issue #874900: fix behaviour of threading module after a fork.
306
Antoine Pitrou9e4fdf42008-09-05 23:43:02 +0000307- Issue #3535: zipfile couldn't read some zip files larger than 2GB.
308
309- Issue #3776: Deprecate the bsddb package for removal in 3.0.
310
311- Issue #3762: platform.architecture() fails if python is lanched via
312 its symbolic link.
313
Antoine Pitroud79dc622008-09-05 00:03:33 +0000314- Issue #3660: fix a memory leak in the C accelerator of the pickle module.
315
Antoine Pitrou1d6a16b2008-09-04 21:32:09 +0000316- Issue #3160: the "bdist_wininst" distutils command didn't work.
317
Guilherme Polob212b752008-09-04 11:21:31 +0000318- Issue #1658: tkinter changes dict size during iteration in both
319 tkinter.BaseWidget and tkinter.scrolledtext.ScrolledText.
320
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000321- The bsddb module (and therefore the dbm.bsd module) has been removed.
Gregory P. Smith451e99b2008-09-04 04:46:48 +0000322 It is now maintained outside of the standard library at
323 http://www.jcea.es/programacion/pybsddb.htm.
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000324
Facundo Batistac469d4c2008-09-03 22:49:01 +0000325- Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
326 to the urlparse one. Added a DeprecationWarning in the old module, it
327 will be deprecated in the future.
328
Marc-André Lemburg7b2b1f92008-09-02 12:10:46 +0000329- Issue #3719: platform.architecture() fails if there are spaces in the
330 path to the Python binary.
331
Brett Cannonec92e182008-09-02 02:46:59 +0000332- Issue 3602: As part of the merge of r66135, make the parameters on
333 warnings.catch_warnings() keyword-only. Also remove a DeprecationWarning.
334
Benjamin Petersonb3085c92008-09-01 23:09:31 +0000335- The deprecation warnings for the camelCase threading API names were removed.
336
Jesse Noller338f5782008-09-03 18:22:19 +0000337- Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
338 SEM_VALUE_MAX.
339
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000340Extension Modules
341-----------------
342
Antoine Pitrou9cadb1b2008-09-15 23:02:56 +0000343- Issue #3782: os.write() must not accept unicode strings.
344
Amaury Forgeot d'Arcd8976f12008-09-02 23:22:56 +0000345- Issue #2975: When compiling several extension modules with Visual Studio 2008
346 from the same python interpreter, some environment variables would grow
347 without limit.
348
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000349- Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
350 exploitation of poor argument checking.
351
Jesus Cea6ba33292008-08-31 14:12:11 +0000352- bsddb code updated to version 4.7.3pre2. This code is the same than
353 Python 2.6 one, since the intention is to keep an unified 2.x/3.x codebase.
354 The Python code is automatically translated using "2to3". Please, do not
355 update this code in Python 3.0 by hand. Update the 2.6 one and then
356 do "2to3".
357
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000358- The _bytesio and _stringio modules are now compiled into the python binary.
359
Gregory P. Smith693fc462008-09-06 20:13:06 +0000360- Issue #3492 and #3790: Fixed the zlib module and zipimport module uses of
361 mutable bytearray objects where they should have been using immutable bytes.
362
Gregory P. Smith0a608fd2008-09-06 21:34:51 +0000363- Issue #3797: Fixed the dbm, marshal, mmap, ossaudiodev, & winreg modules to
364 return bytes objects instead of bytearray objects.
365
Gregory P. Smith693fc462008-09-06 20:13:06 +0000366
Neal Norwitz8f2f22a2008-08-24 20:59:23 +0000367Tools/Demos
368-----------
369
370- Fix Misc/gdbinit so it works.
371
Barry Warsaw8509df72008-08-21 03:02:47 +0000372
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000373Build
374-----
375
Hirokazu Yamamoto54a1cc62008-09-09 17:55:11 +0000376- Issue #3812: Failed to build python if configure --without-threads.
377
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000378- Issue #3791: Remove the bsddb module from the Windows installer, and the
379 core bsddb library from the Windows build files.
380
381
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000382What's new in Python 3.0b3?
383===========================
384
Barry Warsaw57c10582008-08-21 02:39:51 +0000385*Release date: 20-Aug-2008*
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000386
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000387Core and Builtins
388-----------------
389
Benjamin Petersonbc74e5b2008-08-23 20:19:17 +0000390- Issue #3653: Fix a segfault when sys.excepthook was called with invalid
391 arguments.
392
Antoine Pitrou616d2852008-08-19 22:09:34 +0000393- Issue #2394: implement more of the memoryview API, with the caveat that
394 only one-dimensional contiguous buffers are supported and exercised right
395 now. Slicing, slice assignment and comparison (equality and inequality)
396 have been added. Also, the tolist() method has been implemented, but only
397 for byte buffers. Endly, the API has been updated to return bytes objects
398 wherever it used to return bytearrays.
399
Antoine Pitrouee58fa42008-08-19 18:22:14 +0000400- Issue #3560: clean up the new C PyMemoryView API so that naming is
401 internally consistent; add macros PyMemoryView_GET_BASE() and
402 PyMemoryView_GET_BUFFER() to access useful properties of a memory views
403 without relying on a particular implementation; remove the ill-named
404 PyMemoryView() function (PyMemoryView_GET_BUFFER() can be used instead).
405
Thomas Hellerf5049fc2008-08-19 19:49:49 +0000406- ctypes function pointers that are COM methods have a boolean True
407 value again.
408
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000409- Issue #1819: function calls with several named parameters are now on
410 average 35% faster (as measured by pybench).
411
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000412- The undocumented C APIs PyUnicode_AsString() and
413 PyUnicode_AsStringAndSize() were made private to the interpreter, in
414 order to be able to refine their interfaces for Python 3.1.
415
416 If you need to access the UTF-8 representation of a Unicode object
417 as bytes string, please use PyUnicode_AsUTF8String() instead.
418
Antoine Pitrouaf14b792008-08-07 21:50:41 +0000419- Issue #3460: PyUnicode_Join() implementation is 10% to 80% faster thanks
420 to Python 3.0's stricter semantics which allow to avoid successive
421 reallocations of the result string (this also affects str.join()).
422
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000423
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000424Library
425-------
426
Hye-Shik Chang50d1f792008-08-23 08:03:03 +0000427- Issue #1276: Added temporary aliases for CJK Mac encodings to resolve
428 a build problem on MacOS with CJK locales. It adds four temporary
429 mappings to existing legacy codecs that are virtually compatible
430 with Mac encodings. They will be replaced by codecs correctly
431 implemented in 3.1.
432
Amaury Forgeot d'Arc41e36672008-08-20 21:35:50 +0000433- Issue #3614: Corrected a typo in xmlrpc.client, leading to a NameError
434 "global name 'header' is not defined".
435
Antoine Pitroufd036452008-08-19 17:56:33 +0000436- Issue #2834: update the regular expression library to match the unicode
437 standards of py3k. In other words, mixing bytes and unicode strings
438 (be it as pattern, search string or replacement string) raises a TypeError.
439 Moreover, the re.UNICODE flag is enabled automatically for unicode patterns,
440 and can be disabled by specifying a new re.ASCII flag; as for bytes
441 patterns, ASCII matching is the only option and trying to specify re.UNICODE
442 for such patterns raises a ValueError.
443
Guido van Rossum52dbbb92008-08-18 21:44:30 +0000444- Issue #3300: make urllib.parse.[un]quote() default to UTF-8.
445 Code contributed by Matt Giuca. quote() now encodes the input
446 before quoting, unquote() decodes after unquoting. There are
447 new arguments to change the encoding and errors settings.
448 There are also new APIs to skip the encode/decode steps.
449 [un]quote_plus() are also affected.
450
Nick Coghlan36f49522008-08-18 12:31:52 +0000451- Issue #2235: numbers.Number now blocks inheritance of the default id()
452 based hash because that hash mechanism is not correct for numeric types.
453 All concrete numeric types that inherit from Number (rather than just
454 registering with it) must explicitly provide a hash implementation in
455 order for their instances to be hashable.
456
Benjamin Peterson4cd6a952008-08-17 20:23:46 +0000457- Issue #2676: in the email package, content-type parsing was hanging on
458 pathological input because of quadratic or exponential behaviour of a
459 regular expression.
460
Antoine Pitrou87695762008-08-14 22:44:29 +0000461- Issue #3476: binary buffered reading through the new "io" library is now
462 thread-safe.
463
Robert Schuppenies3d1c7de2008-08-10 11:28:17 +0000464- Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
465 menu entries were not deleted.
466
Lars Gustäbel0c24e8b2008-08-02 11:43:24 +0000467- Remove the TarFileCompat class from tarfile.py.
468
Amaury Forgeot d'Arcbdbddf82008-08-01 00:06:49 +0000469- Issue #2491: os.fdopen is now almost an alias for the built-in open(), and
470 accepts the same parameters. It just checks that its first argument is an
471 integer.
472
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000473- Issue #3394: zipfile.writestr sets external attributes when passed a
474 file name rather than a ZipInfo instance, so files are extracted with
475 mode 0600 rather than 000 under Unix.
476
Antoine Pitrouc66f9092008-07-28 19:46:11 +0000477- Issue #2523: Fix quadratic behaviour when read()ing a binary file without
478 asking for a specific length.
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000479
Martin v. Löwis371bb502008-08-16 13:02:57 +0000480Extension Modules
481-----------------
482
483- Bug #3542: Support Unicode strings in _msi module.
484
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000485What's new in Python 3.0b2?
486===========================
487
Barry Warsaw4bd1cef2008-07-18 02:28:44 +0000488*Release date: 17-Jul-2008*
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000489
490Core and Builtins
491-----------------
492
Mark Dickinson65fe25e2008-07-16 11:30:51 +0000493- Issue #3008: the float type has a new instance method 'float.hex'
494 and a new class method 'float.fromhex' to convert floating-point
495 numbers to and from hexadecimal strings, respectively.
496
Eric Smithd68af8f2008-07-16 00:15:35 +0000497- Issue #3083: Add alternate (#) formatting for bin, oct, hex output
498 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
499
Amaury Forgeot d'Arca4db6862008-07-04 21:26:43 +0000500- Issue #3280: like chr(), the "%c" format now accepts unicode code points
501 beyond the Basic Multilingual Plane (above 0xffff) on all configurations. On
502 "narrow Unicode" builds, the result is a string of 2 code units, forming a
503 UTF-16 surrogate pair.
504
Georg Brandld52429f2008-07-04 15:55:02 +0000505- Issue #3282: str.isprintable() should return False for undefined
506 Unicode characters.
507
Martin v. Löwis029656f2008-06-30 04:06:08 +0000508- Issue #3236: Return small longs from PyLong_FromString.
509
Benjamin Petersone6528212008-07-15 15:32:09 +0000510- Exception tracebacks now support exception chaining.
511
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000512Library
513-------
514
Brett Cannonc2542e92008-07-25 18:19:20 +0000515- Removed the sunaudio module. Use sunau instead.
516
Thomas Heller47bc8092008-08-19 06:38:12 +0000517- Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
518 api functions without holding the GIL, which could lead to a fatal
519 error when they failed.
520
521- Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
522
Georg Brandl30704ea02008-07-23 15:07:12 +0000523- Removed "ast" function aliases from the parser module.
524
Thomas Heller15383a02008-07-15 19:46:52 +0000525- Issue #3313: Fixed a crash when a failed dlopen() call does not set
526 a valid dlerror() message.
527
Thomas Heller0261e1e2008-07-15 17:25:07 +0000528- Issue #3258: Fixed a crash when a ctypes POINTER type to an
529 incomplete structure was created.
530
Georg Brandl1abcbf82008-07-01 19:28:43 +0000531- Issue #2683: Fix inconsistency in subprocess.Popen.communicate(): the
532 argument now must be a bytes object in any case.
533
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000534- Issue #3145: help("modules whatever") failed when trying to load the source
535 code of every single module of the standard library, including invalid files
536 used in the test suite.
537
Georg Brandlbded4d32008-07-17 18:15:35 +0000538- The gettext library now consistently uses Unicode strings for message ids
539 and message strings, and ``ugettext()`` and the like don't exist anymore.
Benjamin Peterson801844d2008-07-14 14:32:15 +0000540
Benjamin Petersone6528212008-07-15 15:32:09 +0000541- The traceback module has been expanded to handle chained exceptions.
542
Amaury Forgeot d'Arc612f61f2008-07-02 23:02:21 +0000543C API
544-----
545
546- Issue #3247: the function Py_FindMethod was removed. Modern types should
547 use the tp_methods slot instead.
548
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000549Tools/Demos
550-----------
551
Georg Brandl336341f2008-07-01 20:21:28 +0000552- The Mac/Demos directory has been removed.
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000553
Georg Brandl336341f2008-07-01 20:21:28 +0000554- All of the Mac scripts have been removed (including BuildApplet.py).
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000555
556
Brett Cannon0d71ee72008-05-08 18:13:40 +0000557What's new in Python 3.0b1?
558===========================
559
Barry Warsawc1e689e2008-06-19 00:35:43 +0000560*Release date: 18-Jun-2008*
Brett Cannon0d71ee72008-05-08 18:13:40 +0000561
562Core and Builtins
563-----------------
564
Brett Cannondb734912008-06-27 00:52:15 +0000565- Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
566 argument being anything other than a dict or None. Also fixed a bug in error
567 handling when 'message' and 'category' were both set to None, triggering a
568 bus error.
569
Amaury Forgeot d'Arcc856c7a2008-06-16 19:50:09 +0000570- Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
571 holds the last (strong) reference to its referent.
572
Georg Brandl559e5d72008-06-11 18:37:52 +0000573- Issue #2630: implement PEP 3138. repr() now returns printable
574 Unicode characters unescaped, to get an ASCII-only representation
575 of an object use ascii().
576
Amaury Forgeot d'Arcf1ca0b12008-06-11 17:40:47 +0000577- Issue #1342: On windows, Python could not start when installed in a
578 directory with non-ascii characters.
579
Martin v. Löwis1a214512008-06-11 05:26:20 +0000580- Implement PEP 3121: new module initialization and finalization API.
581
Georg Brandle1b5ac62008-06-04 13:06:58 +0000582- Removed the already-defunct ``-t`` option.
583
Amaury Forgeot d'Arc74c71f52008-05-26 21:41:42 +0000584- Issue #2957: Corrected a ValueError "recursion limit exceeded", when
585 unmarshalling many code objects, which happens when importing a
586 large .pyc file (~1000 functions).
587
Georg Brandl52b92cc2008-05-25 09:43:03 +0000588- Issue #2963: fix merging oversight that disabled method cache for
589 all types.
Georg Brandl1bcf35a2008-05-25 09:32:09 +0000590
Georg Brandlc9b09532008-05-25 09:24:38 +0000591- Issue #2964: fix a missing INCREF in instancemethod_descr_get.
592
Georg Brandl52b92cc2008-05-25 09:43:03 +0000593- Issue #2895: Don't crash when given bytes objects as keyword names.
Georg Brandld8b690f2008-05-16 17:28:50 +0000594
Georg Brandl52b92cc2008-05-25 09:43:03 +0000595- Issue #2798: When parsing arguments with PyArg_ParseTuple, the "s"
596 code now allows any unicode string and returns a utf-8 encoded
597 buffer, just like the "s#" code already does. The "z" code was
598 corrected as well.
Amaury Forgeot d'Arc07404592008-05-12 13:19:07 +0000599
Georg Brandl52b92cc2008-05-25 09:43:03 +0000600- Issue #2863: generators now have a ``gen.__name__`` attribute that
601 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
602 ``func.func_code.co_name``. The repr() of a generator now also
603 contains this name.
Alexandre Vassalottie9f305f2008-05-16 04:39:54 +0000604
605- Issue #2831: enumerate() now has a ``start`` argument.
606
Georg Brandl52b92cc2008-05-25 09:43:03 +0000607- Issue #2801: fix bug in the float.is_integer method where a
608 ValueError was sometimes incorrectly raised.
Mark Dickinsonc4352b02008-05-09 13:55:01 +0000609
Georg Brandl52b92cc2008-05-25 09:43:03 +0000610- The ``--with-toolbox-glue`` option (and the associated
611 pymactoolbox.h) have been removed.
Benjamin Peterson79629ab2008-05-14 21:07:12 +0000612
Georg Brandl52b92cc2008-05-25 09:43:03 +0000613- Issue #2196: hasattr() now lets exceptions which do not inherit
614 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
615 ignoring them.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000616
Benjamin Petersoneec3d712008-06-11 15:59:43 +0000617- #3021 Exception reraising sematics have been significantly improved. However,
618 f_exc_type, f_exc_value, and f_exc_traceback cannot be accessed from Python
619 code anymore.
620
Benjamin Peterson4f92ca42008-06-11 20:21:57 +0000621- Three of PyNumberMethods' members, nb_coerce, nb_hex, and nb_oct, have been
622 removed.
623
Brett Cannon0d71ee72008-05-08 18:13:40 +0000624Extension Modules
625-----------------
626
Georg Brandl38feaf02008-05-25 07:45:51 +0000627- Renamed ``_winreg`` module to ``winreg``.
628
Georg Brandl52b92cc2008-05-25 09:43:03 +0000629- Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
630 platform.
Alexandre Vassalottibee32532008-05-16 18:15:12 +0000631
632- Support for Windows 9x has been removed from the winsound module.
633
Georg Brandl52b92cc2008-05-25 09:43:03 +0000634- Issue #2870: cmathmodule.c compile error.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000635
Brett Cannon0d71ee72008-05-08 18:13:40 +0000636Library
637-------
638
Benjamin Peterson87069fd2008-08-20 02:00:14 +0000639- The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
640 symtable.Symbol have been removed.
641
Amaury Forgeot d'Arccb0d2d72008-06-18 22:19:22 +0000642- Patch #3133: http.server.CGIHTTPRequestHandler did not work on windows.
643
Jeremy Hylton1afc1692008-06-18 20:49:58 +0000644- a new ``urllib`` package was created. It consists of code from
645 ``urllib``, ``urllib2``, ``urlparse``, and ``robotparser``. The old
646 modules have all been removed. The new package has five submodules:
647 ``urllib.parse``, ``urllib.request``, ``urllib.response``,
648 ``urllib.error``, and ``urllib.robotparser``. The
649 ``urllib.request.urlopen()`` function uses the url opener from
650 ``urllib2``. (Note that the unittests have not been renamed for the
651 beta, but they will be renamed in the future.)
652
Benjamin Petersona0c0a4a2008-06-12 22:15:50 +0000653- rfc822 has been removed in favor of the email package.
654
Benjamin Peterson425ea7f2008-06-12 14:11:35 +0000655- mimetools has been removed in favor of the email package.
Benjamin Peterson23c51a22008-06-12 14:06:57 +0000656
Barry Warsawf5019422008-06-12 02:42:00 +0000657- Patch #2849: Remove use of rfc822 module from standard library.
658
Alexandre Vassalotti794652d2008-06-11 22:58:36 +0000659- Added C optimized implementation of io.StringIO.
660
Alexandre Vassalottica2d6102008-06-12 18:26:05 +0000661- The ``pickle`` module is now automatically use an optimized C
662 implementation of Pickler and Unpickler when available. The
663 ``cPickle`` module is no longer needed.
664
Georg Brandl877b10a2008-06-01 21:25:55 +0000665- Removed the ``htmllib`` and ``sgmllib`` modules.
666
Georg Brandl61013952008-05-28 15:56:30 +0000667- The deprecated ``SmartCookie`` and ``SimpleCookie`` classes have
668 been removed from ``http.cookies``.
669
Brett Cannona23810f2008-05-26 19:04:21 +0000670- The ``commands`` module has been removed. Its getoutput() and
671 getstatusoutput() functions have been moved to the ``subprocess`` module.
672
Georg Brandl3d5c4252008-05-26 18:03:26 +0000673- The ``http`` package was created; it contains the old ``httplib``
674 as ``http.client``, ``Cookie`` as ``http.cookies``, ``cookielib``
675 as ``http.cookiejar``, and the content of the three ``HTTPServer``
676 modules as ``http.server``.
677
Georg Brandl38eceaa2008-05-26 11:14:17 +0000678- The ``xmlrpc`` package was created; it contains the old
679 ``xmlrpclib`` module as ``xmlrpc.client`` and the content of
680 the old ``SimpleXMLRPCServer`` and ``DocXMLRPCServer`` modules
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000681 as ``xmlrpc.server``.
Georg Brandl38eceaa2008-05-26 11:14:17 +0000682
683- The ``dbm`` package was created, containing the old modules
684 ``anydbm`` and ``whichdb`` in its ``__init__.py``, and having
685 ``dbm.gnu`` (was ``gdbm``), ``dbm.bsd`` (was ``dbhash``),
686 ``dbm.ndbm`` (was ``dbm``) and ``dbm.dumb`` (was ``dumbdbm``)
687 as submodules.
688
Georg Brandl52b92cc2008-05-25 09:43:03 +0000689- The ``repr`` module has been renamed to ``reprlib``.
Alexandre Vassalotti1f2ba4b2008-05-16 07:12:44 +0000690
Georg Brandl52b92cc2008-05-25 09:43:03 +0000691- The ``statvfs`` module has been removed.
Brett Cannonacbb7862008-05-16 00:42:57 +0000692
Georg Brandl52b92cc2008-05-25 09:43:03 +0000693- Issue #1713041: fix pprint's handling of maximum depth.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000694
Georg Brandl52b92cc2008-05-25 09:43:03 +0000695- Issue #2250: Exceptions raised during evaluation of names in
696 rlcompleter's ``Completer.complete()`` method are now caught and
697 ignored.
Alexandre Vassalotti8ae3e052008-05-16 00:41:41 +0000698
Georg Brandl52b92cc2008-05-25 09:43:03 +0000699- Patch #2659: Added ``break_on_hyphens`` option to textwrap's
700 ``TextWrapper`` class.
Alexandre Vassalotti1d1eaa42008-05-14 22:59:42 +0000701
Alexandre Vassalotti6461e102008-05-15 22:09:29 +0000702- Issue #2487: change the semantics of math.ldexp(x, n) when n is too
703 large to fit in a C long. ldexp(x, n) now returns a zero (with
704 suitable sign) if n is large and negative; previously, it raised
705 OverflowError.
706
Georg Brandl52b92cc2008-05-25 09:43:03 +0000707- The ``ConfigParser`` module has been renamed to ``configparser``.
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000708
Georg Brandl52b92cc2008-05-25 09:43:03 +0000709- Issue #2865: webbrowser.open() works again in a KDE environment.
Amaury Forgeot d'Arc2b2b44d2008-05-12 14:41:00 +0000710
Georg Brandl52b92cc2008-05-25 09:43:03 +0000711- The ``multifile`` module has been removed.
Brett Cannond3343cb2008-05-12 03:18:21 +0000712
Georg Brandl52b92cc2008-05-25 09:43:03 +0000713- The ``SocketServer`` module has been renamed to ``socketserver``.
Alexandre Vassalottice261952008-05-12 02:31:37 +0000714
Georg Brandl52b92cc2008-05-25 09:43:03 +0000715- Fixed the ``__all__`` setting on ``collections`` to include
716 ``UserList`` and ``UserString``.
Brett Cannon23a4a7b2008-05-12 00:56:28 +0000717
Brett Cannoncf3520c2008-05-11 22:47:58 +0000718- The sre module has been removed.
719
Alexandre Vassalottif260e442008-05-11 19:59:59 +0000720- The Queue module has been renamed to queue.
721
Alexandre Vassalottif7fa63d2008-05-11 08:55:36 +0000722- The copy_reg module has been renamed to copyreg.
723
Brett Cannond8b61ee2008-05-11 03:00:26 +0000724- The mhlib module has been removed.
725
Brett Cannonbd474422008-05-10 22:42:14 +0000726- The ihooks module has been removed.
727
Brett Cannonb59a2bd2008-05-10 22:03:16 +0000728- The fpformat module has been removed.
729
Brett Cannonf4fd9932008-05-10 21:11:46 +0000730- The dircache module has been removed.
731
Brett Cannond175b4c2008-05-10 03:19:54 +0000732- The Canvas module has been removed.
733
Mark Dickinsonb27406c2008-05-09 13:42:33 +0000734- The Decimal module gained the magic methods __round__, __ceil__,
735 __floor__ and __trunc__, to give support for round, math.ceil,
736 math.floor and math.trunc.
737
Brett Cannon900ee3a2008-05-08 20:31:11 +0000738- The user module has been removed.
739
Brett Cannon34afe872008-05-08 20:31:44 +0000740- The mutex module has been removed.
741
Brett Cannon0d71ee72008-05-08 18:13:40 +0000742- The imputil module has been removed.
743
Georg Brandl52b92cc2008-05-25 09:43:03 +0000744- os.path.walk has been removed in favor of os.walk.
Benjamin Petersond71ca412008-05-08 23:44:58 +0000745
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000746- pdb gained the "until" command.
747
Georg Brandl52b92cc2008-05-25 09:43:03 +0000748- The test.test_support module has been renamed to test.support.
Benjamin Petersonee8712c2008-05-20 21:35:26 +0000749
Georg Brandl32de7af2008-08-18 23:07:41 +0000750- The threading module API was renamed to be PEP 8 compliant. The
751 old names are still present, but will be removed in the near future.
Benjamin Peterson672b8032008-06-11 19:14:14 +0000752
Georg Brandl294d5a92008-06-01 19:25:32 +0000753Tools/Demos
754-----------
755
756- The bgen tool has been removed.
Benjamin Peterson630c8292008-06-01 18:50:38 +0000757
Brett Cannon0d71ee72008-05-08 18:13:40 +0000758Build
759-----
760
761
Barry Warsaw66079cd2008-04-04 01:36:36 +0000762What's New in Python 3.0a5?
763===========================
764
Barry Warsaw9eab8b02008-05-08 13:05:38 +0000765*Release date: 08-May-2008*
Barry Warsaw66079cd2008-04-04 01:36:36 +0000766
767Core and Builtins
768-----------------
769
Georg Brandl52b92cc2008-05-25 09:43:03 +0000770- Fixed misbehaviour of PyLong_FromSsize_t on systems where
771 sizeof(size_t) > sizeof(long).
Mark Dickinson7ab6be22008-04-15 21:42:42 +0000772
Georg Brandl52b92cc2008-05-25 09:43:03 +0000773- Issue #2221: Corrected a SystemError "error return without exception
774 set", when the code executed by exec() raises an exception, and
775 sys.stdout.flush() also raises an error.
Amaury Forgeot d'Arc7fedbe52008-04-10 21:03:09 +0000776
Georg Brandl52b92cc2008-05-25 09:43:03 +0000777- Bug #2565: The repr() of type objects now calls them 'class', not
778 'type' - whether they are builtin types or not.
Martin v. Löwis250ad612008-04-07 05:43:42 +0000779
Martin v. Löwis790465f2008-04-05 20:41:37 +0000780- The command line processing was converted to pass Unicode strings
781 through as unmodified as possible; as a consequence, the C API
782 related to command line arguments was changed to use wchar_t.
783
Georg Brandl52b92cc2008-05-25 09:43:03 +0000784- All backslashes in raw strings are interpreted literally. This
785 means that '\u' and '\U' escapes are not treated specially.
Benjamin Petersona2f837f2008-04-28 21:05:10 +0000786
Barry Warsaw66079cd2008-04-04 01:36:36 +0000787Extension Modules
788-----------------
789
790Library
791-------
792
Georg Brandl52b92cc2008-05-25 09:43:03 +0000793- ctypes objects now support the PEP3118 buffer interface.
Thomas Hellerb041fda2008-04-30 17:11:46 +0000794
Thomas Hellere106dc32008-04-24 18:39:36 +0000795- Issue #2682: ctypes callback functions now longer contain a cyclic
796 reference to themselves.
797
Georg Brandl52b92cc2008-05-25 09:43:03 +0000798- Issue #2058: Remove the buf attribute and add __slots__ to the
799 TarInfo class in order to reduce tarfile's memory usage.
Lars Gustäbelc2ea8c62008-04-14 10:05:48 +0000800
Martin v. Löwis8efc62c2008-04-10 19:02:25 +0000801- Bug #2606: Avoid calling .sort() on a dict_keys object.
802
Thomas Hellerbff533b2008-04-04 19:53:14 +0000803- The bundled libffi copy is now in sync with the recently released
804 libffi3.0.5 version, apart from some small changes to
805 Modules/_ctypes/libffi/configure.ac.
806
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000807Build
808-----
809
Mark Dickinsonb0e2b4c2008-04-26 20:48:56 +0000810- Issue #1496032: On alpha, use -mieee when gcc is the compiler.
811
Guido van Rossumdc21db32008-04-07 18:37:41 +0000812- "make install" is now an alias for "make altinstall", to prevent
Georg Brandl52b92cc2008-05-25 09:43:03 +0000813 accidentally overwriting a Python 2.x installation. Use "make
814 fullinstall" to force Python 3.0 to be installed as "python".
Guido van Rossumdc21db32008-04-07 18:37:41 +0000815
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000816- Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
817 gcc is used as compiler.
Barry Warsaw66079cd2008-04-04 01:36:36 +0000818
Georg Brandl52b92cc2008-05-25 09:43:03 +0000819
Barry Warsawa9d499d2008-03-01 18:38:07 +0000820What's New in Python 3.0a4?
821===========================
822
Barry Warsawbb5cd082008-04-02 23:33:27 +0000823*Release date: 02-Apr-2008*
Barry Warsawa9d499d2008-03-01 18:38:07 +0000824
Martin v. Löwis25931462008-03-17 20:43:42 +0000825Core and Builtins
826-----------------
827
828- Bug #2301: Don't try decoding the source code into the original
829 encoding for syntax errors.
830
Martin v. Löwis92fab752008-03-08 10:40:41 +0000831Extension Modules
832-----------------
833
Neal Norwitz6cf49cf2008-03-24 06:22:57 +0000834- The dl module was removed, use the ctypes module instead.
835
Martin v. Löwis92fab752008-03-08 10:40:41 +0000836- Use wchar_t functions in _locale module.
Barry Warsawa9d499d2008-03-01 18:38:07 +0000837
Martin v. Löwis071ef772008-03-08 11:24:24 +0000838Library
839-------
840
Georg Brandl52b92cc2008-05-25 09:43:03 +0000841- The class distutils.commands.build_py.build_py_2to3 can be used as a
842 build_py replacement to automatically run 2to3 on modules that are
843 going to be installed.
Martin v. Löwis73a22f02008-03-22 00:35:10 +0000844
Guido van Rossumf4169812008-03-17 22:56:06 +0000845- A new pickle protocol (protocol 3) is added with explicit support
846 for bytes. This is the default protocol. It intentionally cannot
847 be unpickled by Python 2.x.
848
849- When a pickle written by Python 2.x contains an (8-bit) str
850 instance, this is now decoded to a (Unicode) str instance. The
851 encoding used to do this defaults to ASCII, but can be overridden
852 via two new keyword arguments to the Unpickler class. Previously
853 this would create bytes instances, which is usually wrong: str
854 instances are often used to pickle attribute names etc., and text is
855 more common than binary data anyway.
856
Martin v. Löwis071ef772008-03-08 11:24:24 +0000857- Default to ASCII as the locale.getpreferredencoding, if the POSIX
Georg Brandl52b92cc2008-05-25 09:43:03 +0000858 system doesn't support CODESET and LANG isn't set or doesn't allow
859 deduction of an encoding.
Martin v. Löwis071ef772008-03-08 11:24:24 +0000860
Georg Brandl52b92cc2008-05-25 09:43:03 +0000861- Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned
862 value.
Gregory P. Smith425136b2008-03-17 20:45:21 +0000863
Georg Brandl52b92cc2008-05-25 09:43:03 +0000864- Issue #719888: Updated tokenize to use a bytes API. generate_tokens
865 has been renamed tokenize and now works with bytes rather than
866 strings. A new detect_encoding function has been added for
867 determining source file encoding according to PEP-0263. Token
868 sequences returned by tokenize always start with an ENCODING token
869 which specifies the encoding used to decode the file. This token is
870 used to encode the output of untokenize back to bytes.
871
Barry Warsawa9d499d2008-03-01 18:38:07 +0000872
Christian Heimesbc873412007-12-08 22:11:32 +0000873What's New in Python 3.0a3?
874===========================
875
Barry Warsaw659fc422008-03-01 17:45:23 +0000876*Release date: 29-Feb-2008*
Christian Heimesbc873412007-12-08 22:11:32 +0000877
878Core and Builtins
879-----------------
880
Georg Brandl52b92cc2008-05-25 09:43:03 +0000881- Issue #2282: io.TextIOWrapper was not overriding seekable() from
882 io.IOBase.
Ka-Ping Yeeddaa7062008-03-17 20:35:15 +0000883
Georg Brandl52b92cc2008-05-25 09:43:03 +0000884- Issue #2115: Important speedup in setting __slot__ attributes. Also
885 prevent a possible crash: an Abstract Base Class would try to access
886 a slot on a registered virtual subclass.
Christian Heimesa156e092008-02-16 07:38:31 +0000887
Georg Brandl52b92cc2008-05-25 09:43:03 +0000888- Fixed repr() and str() of complex numbers with infinity or nan as
889 real or imaginary part.
Christian Heimesa156e092008-02-16 07:38:31 +0000890
Georg Brandl52b92cc2008-05-25 09:43:03 +0000891- Clear all free list during a gc.collect() of the highest generation
892 in order to allow pymalloc to free more arenas. Python may give back
893 memory to the OS earlier.
Christian Heimesa156e092008-02-16 07:38:31 +0000894
Georg Brandl52b92cc2008-05-25 09:43:03 +0000895- Issue #2045: Fix an infinite recursion triggered when printing a
896 subclass of collections.defaultdict, if its default_factory is set
897 to a bound method.
Christian Heimesa156e092008-02-16 07:38:31 +0000898
899- Fixed a minor memory leak in dictobject.c. The content of the free
900 list was not freed on interpreter shutdown.
901
Georg Brandl52b92cc2008-05-25 09:43:03 +0000902- Limit free list of method and builtin function objects to 256
903 entries each.
Christian Heimesa156e092008-02-16 07:38:31 +0000904
Georg Brandl52b92cc2008-05-25 09:43:03 +0000905- Patch #1953: Added ``sys._compact_freelists()`` and the C API
906 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
Christian Heimesa156e092008-02-16 07:38:31 +0000907 to compact the internal free lists of pre-allocted ints and floats.
908
909- Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls.
Georg Brandl52b92cc2008-05-25 09:43:03 +0000910 Python expected the return type int but the fork familie returns
911 pi_t.
Christian Heimesa156e092008-02-16 07:38:31 +0000912
Georg Brandl52b92cc2008-05-25 09:43:03 +0000913- Issue #1678380: Fix a bug that identifies 0j and -0j when they
914 appear in the same code unit.
Christian Heimesa156e092008-02-16 07:38:31 +0000915
Georg Brandl52b92cc2008-05-25 09:43:03 +0000916- Issue #2025: Added tuple.count() and tuple.index() methods to comply
917 with the collections.Sequence API.
Raymond Hettinger65baa342008-02-07 00:41:02 +0000918
Georg Brandl52b92cc2008-05-25 09:43:03 +0000919- Fixed multiple reinitialization of the Python interpreter. The small
920 int list in longobject.c has caused a seg fault during the third
921 finalization.
Christian Heimesdfc12ed2008-01-31 15:16:38 +0000922
Georg Brandl52b92cc2008-05-25 09:43:03 +0000923- Issue #1973: bytes.fromhex('') raised SystemError.
Christian Heimesc04dac02008-01-30 11:27:57 +0000924
Georg Brandl52b92cc2008-05-25 09:43:03 +0000925- Issue #1771: remove cmp parameter from sorted() and list.sort().
Raymond Hettinger70b64fc2008-01-30 20:15:17 +0000926
Georg Brandl52b92cc2008-05-25 09:43:03 +0000927- Issue #1969: split and rsplit in bytearray are inconsistent.
Christian Heimes7b876152008-01-30 09:51:48 +0000928
Georg Brandl52b92cc2008-05-25 09:43:03 +0000929- map() no longer accepts None for the first argument. Use zip()
930 instead.
Raymond Hettinger1dfde1d2008-01-22 23:25:35 +0000931
Facundo Batista2336bdd2008-01-19 19:12:01 +0000932- Issue #1769: Now int("- 1") is not allowed any more.
933
Georg Brandl52b92cc2008-05-25 09:43:03 +0000934- Object/longobject.c: long(float('nan')) raises an OverflowError
935 instead of returning 0.
Christian Heimes386cd1e2008-01-15 02:01:20 +0000936
Georg Brandl52b92cc2008-05-25 09:43:03 +0000937- Issue #1762972: __file__ points to the source file instead of the
938 pyc/pyo file if the py file exists.
Christian Heimes3b06e532008-01-07 20:12:44 +0000939
Guido van Rossumab078dd2008-01-06 00:09:11 +0000940- Issue #1393: object_richcompare() returns NotImplemented instead of
941 False if the objects aren't equal, to give the other side a chance.
942
Guido van Rossume239b002008-01-06 00:44:20 +0000943- Issue #1692: Interpreter was not displaying location of SyntaxError.
Kurt B. Kaiser43b15092008-01-05 04:32:22 +0000944
Georg Brandl52b92cc2008-05-25 09:43:03 +0000945- Improve some exception messages when Windows fails to load an
946 extension module. Now we get for example '%1 is not a valid Win32
947 application' instead of 'error code 193'. Also use Unicode strings
948 to deal with non-English locales.
Amaury Forgeot d'Arcbccd63c2008-01-04 01:21:27 +0000949
Georg Brandl52b92cc2008-05-25 09:43:03 +0000950- Issue #1587: Added instancemethod wrapper for PyCFunctions. The
951 Python C API has gained a new type *PyInstanceMethod_Type* and the
952 functions *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)*
953 and *PyInstanceMethod_Function(im)*.
Christian Heimesa3534a62007-12-11 19:56:40 +0000954
Georg Brandl52b92cc2008-05-25 09:43:03 +0000955- Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed
956 from the gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE
957 are now enough to print the corresponding list of objects considered
958 by the garbage collector.
Amaury Forgeot d'Arcad8dcd52007-12-10 23:58:35 +0000959
Georg Brandl52b92cc2008-05-25 09:43:03 +0000960- Issue #1573: Improper use of the keyword-only syntax makes the
961 parser crash.
Christian Heimesbc873412007-12-08 22:11:32 +0000962
Georg Brandl52b92cc2008-05-25 09:43:03 +0000963- Issue #1564: The set implementation should special-case PyUnicode
964 instead of PyString.
Christian Heimes0ded5b52007-12-10 15:50:56 +0000965
Guido van Rossumea6775b2008-02-21 20:16:31 +0000966- Patch #1031213: Decode source line in SyntaxErrors back to its
967 original source encoding.
Christian Heimes7131fd92008-02-19 14:21:46 +0000968
Christian Heimes09aaa882008-02-23 15:01:06 +0000969- inspect.getsource() includes the decorators again.
970
Guido van Rossumea6775b2008-02-21 20:16:31 +0000971- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a
972 mountpoint.
Christian Heimes7131fd92008-02-19 14:21:46 +0000973
Georg Brandl52b92cc2008-05-25 09:43:03 +0000974- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
975 the first chunk fed to the decoder started with a BOM, but was
976 longer than 3 bytes.
Christian Heimes7131fd92008-02-19 14:21:46 +0000977
Christian Heimesbc873412007-12-08 22:11:32 +0000978Extension Modules
979-----------------
980
Georg Brandl52b92cc2008-05-25 09:43:03 +0000981- Code for itertools ifilter(), imap(), and izip() moved to bultins
982 and renamed to filter(), map(), and zip(). Also, renamed
983 izip_longest() to zip_longest() and ifilterfalse() to filterfalse().
Raymond Hettinger736c0ab2008-03-13 02:09:15 +0000984
Georg Brandl52b92cc2008-05-25 09:43:03 +0000985- Issue #1762972: Readded the reload() function as imp.reload().
Guido van Rossumea6775b2008-02-21 20:16:31 +0000986
Georg Brandl52b92cc2008-05-25 09:43:03 +0000987- Bug #2111: mmap segfaults when trying to write a block opened with
988 PROT_READ.
Christian Heimesa156e092008-02-16 07:38:31 +0000989
Georg Brandl52b92cc2008-05-25 09:43:03 +0000990- Issue #2063: correct order of utime and stime in os.times() result
991 on Windows.
Christian Heimes7131fd92008-02-19 14:21:46 +0000992
Christian Heimesbc873412007-12-08 22:11:32 +0000993Library
994-------
995
Raymond Hettinger48b8b662008-02-05 01:53:00 +0000996- Weakref dictionaries now inherit from MutableMapping.
Raymond Hettinger48b8b662008-02-05 01:53:00 +0000997
Georg Brandl52b92cc2008-05-25 09:43:03 +0000998- Created new UserDict class in collections module. This one inherits
999 from and complies with the MutableMapping ABC. Also, moved
1000 UserString and UserList to the collections module. The
1001 MutableUserString class was removed.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001002
Guido van Rossumea6775b2008-02-21 20:16:31 +00001003- Removed UserDict.DictMixin. Replaced all its uses with
1004 collections.MutableMapping.
Raymond Hettingeredf3b732008-02-04 22:07:15 +00001005
Guido van Rossume239b002008-01-06 00:44:20 +00001006- Issue #1703: getpass() should flush after writing prompt.
Christian Heimesfc5aa9d2007-12-11 09:00:01 +00001007
Guido van Rossume239b002008-01-06 00:44:20 +00001008- Issue #1585: IDLE uses non-existent xrange() function.
1009
1010- Issue #1578: Problems in win_getpass.
1011
Georg Brandl52d168a2008-01-07 18:10:24 +00001012Build
1013-----
1014
Georg Brandl52b92cc2008-05-25 09:43:03 +00001015- Renamed --enable-unicode configure flag to --with-wide-unicode,
1016 since Unicode strings can't be disabled anymore.
Georg Brandl52d168a2008-01-07 18:10:24 +00001017
Guido van Rossume239b002008-01-06 00:44:20 +00001018C API
1019-----
1020
1021- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
1022 Py_TYPE and Py_REFCNT.
1023
Georg Brandl52b92cc2008-05-25 09:43:03 +00001024- New API PyImport_ImportModuleNoBlock(), works like
1025 PyImport_ImportModule() but won't block on the import lock
1026 (returning an error instead).
Christian Heimes0ec88b32007-12-10 17:02:00 +00001027
Christian Heimesbc873412007-12-08 22:11:32 +00001028
Fred Drake0e474a82007-10-11 18:01:43 +00001029What's New in Python 3.0a2?
Christian Heimesbc873412007-12-08 22:11:32 +00001030===========================
Fred Drake0e474a82007-10-11 18:01:43 +00001031
Guido van Rossum99533a92007-12-06 05:07:41 +00001032*Release date: 07-Dec-2007*
1033
1034(Note: this list is incomplete.)
Fred Drake0e474a82007-10-11 18:01:43 +00001035
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001036Core and Builtins
1037-----------------
1038
Brett Cannon37f7e6e2007-10-26 05:42:09 +00001039- str8 now has the same construction signature as bytes.
1040
Georg Brandl52b92cc2008-05-25 09:43:03 +00001041- Comparisons between str and str8 now return False/True for ==/!=.
1042 sqlite3 returns str8 when recreating on object from it's __conform__
1043 value. The struct module returns str8 for all string-related
1044 formats. This was true before this change, but becomes more
1045 apparent thanks to string comparisons always being False.
Brett Cannon40430012007-10-22 20:24:51 +00001046
Georg Brandl52b92cc2008-05-25 09:43:03 +00001047- Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode,
1048 buffer, encoding, newline)`.
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001049
1050- Fixed `imp.find_module()` to obey the -*- coding: -*- header.
1051
1052- Changed `__file__` and `co_filename` to unicode. The path names are decoded
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +00001053 with `Py_FileSystemDefaultEncoding` and a new API method
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001054 `PyUnicode_DecodeFSDefault(char*)` was added.
1055
Georg Brandl52b92cc2008-05-25 09:43:03 +00001056- io.open() and _fileio.FileIO have grown a new argument closefd. A
1057 false value disables the closing of the file descriptor.
Guido van Rossum2dced8b2007-10-30 17:27:30 +00001058
Georg Brandl52b92cc2008-05-25 09:43:03 +00001059- Added a new option -b to issues warnings (-bb for errors) about
1060 certain operations between bytes/buffer and str like str(b'') and
1061 comparison.
Guido van Rossum98297ee2007-11-06 21:34:58 +00001062
Georg Brandl52b92cc2008-05-25 09:43:03 +00001063- The standards streams sys.stdin, stdout and stderr may be None when
1064 the when the C runtime library returns an invalid file descriptor
1065 for the streams (fileno(stdin) < 0). For now this happens only for
1066 Windows GUI apps and scripts started with `pythonw.exe`.
Christian Heimes58cb1b82007-11-13 02:19:40 +00001067
Christian Heimesbce52be2007-11-17 19:08:41 +00001068- Added PCbuild9 directory for VS 2008.
1069
Georg Brandl52b92cc2008-05-25 09:43:03 +00001070- Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to
1071 work around a name clash with VS 2008 on Windows.
Christian Heimesbce52be2007-11-17 19:08:41 +00001072
Georg Brandl52b92cc2008-05-25 09:43:03 +00001073- Unbound methods are gone for good. ClassObject.method returns an
1074 ordinary function object, instance.method still returns a bound
1075 method object. The API of bound methods is cleaned up, too. The
1076 im_class attribute is removed and im_func + im_self are renamed to
1077 __func__ and __self__. The factory PyMethod_New takes only func and
1078 instance as argument.
Christian Heimesff737952007-11-27 10:40:20 +00001079
Georg Brandl52b92cc2008-05-25 09:43:03 +00001080- intobject.h is no longer included by Python.h. The remains were
1081 moved to longobject.h. It still exists to define several aliases
1082 from PyInt_ to PyLong_ functions.
Christian Heimesf78b1c62007-12-02 16:52:32 +00001083
Christian Heimesa37d4c62007-12-04 23:02:19 +00001084- Removed sys.maxint, use sys.maxsize instead.
1085
Fred Drake0e474a82007-10-11 18:01:43 +00001086Extension Modules
1087-----------------
1088
1089- The `hotshot` profiler has been removed; use `cProfile` instead.
1090
Brett Cannone9fd2312007-10-12 19:18:19 +00001091Library
1092-------
1093
Georg Brandl52b92cc2008-05-25 09:43:03 +00001094- When loading an external file using testfile(), the passed-in
1095 encoding argument was being ignored if __loader__ is defined and
1096 forcing the source to be UTF-8.
Brett Cannone9fd2312007-10-12 19:18:19 +00001097
Georg Brandl52b92cc2008-05-25 09:43:03 +00001098- The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have
1099 been removed in favor of the tempfile module.
Guido van Rossum687b9c02007-10-25 23:18:51 +00001100
Christian Heimesc9543e42007-11-28 08:28:28 +00001101- Removed the 'new' module.
1102
Georg Brandl52b92cc2008-05-25 09:43:03 +00001103- Removed all types from the 'types' module that are easily accessable
1104 through builtins.
Brett Cannone9fd2312007-10-12 19:18:19 +00001105
Georg Brandl52d168a2008-01-07 18:10:24 +00001106
Guido van Rossum4405cf32007-08-30 17:16:55 +00001107What's New in Python 3.0a1?
Guido van Rossum45aecf42006-03-15 04:58:47 +00001108==========================
Thomas Wouters4d70c3d2006-06-08 14:42:34 +00001109
Guido van Rossum4405cf32007-08-30 17:16:55 +00001110*Release date: 31-Aug-2007*
Neal Norwitz4886cc32006-08-21 17:06:07 +00001111
1112Core and Builtins
1113-----------------
1114
Martin v. Löwis47383402007-08-15 07:32:56 +00001115- PEP 3131: Support non-ASCII identifiers.
1116
Martin v. Löwis447d33e2007-07-29 18:10:01 +00001117- PEP 3120: Change default encoding to UTF-8.
1118
Martin v. Löwis9f2e3462007-07-21 17:22:18 +00001119- PEP 3123: Use proper C inheritance for PyObject.
1120
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001121- Removed the __oct__ and __hex__ special methods and added a bin()
1122 builtin function.
1123
Georg Brandl52b92cc2008-05-25 09:43:03 +00001124- PEP 3127: octal literals now start with "0o". Old-style octal
1125 literals are invalid. There are binary literals with a prefix of
1126 "0b". This also affects int(x, 0).
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001127
Guido van Rossume7ba4952007-06-06 23:52:48 +00001128- None, True, False are now keywords.
1129
Guido van Rossum29478ef2007-05-29 00:39:44 +00001130- PEP 3119: isinstance() and issubclass() can be overridden.
1131
Guido van Rossumebe3e162007-05-17 18:20:34 +00001132- Remove BaseException.message.
1133
Guido van Rossum1bc535d2007-05-15 18:46:22 +00001134- Remove tuple parameter unpacking (PEP 3113).
1135
Georg Brandl52b92cc2008-05-25 09:43:03 +00001136- Remove the f_restricted attribute from frames. This naturally leads
1137 to the removal of PyEval_GetRestricted() and PyFrame_IsRestricted().
Guido van Rossuma8add0e2007-05-14 22:03:55 +00001138
Georg Brandl52b92cc2008-05-25 09:43:03 +00001139- PEP 3132 was accepted. That means that you can do ``a, *b =
1140 range(5)`` to assign 0 to a and [1, 2, 3, 4] to b.
Guido van Rossum0368b722007-05-11 16:50:42 +00001141
Georg Brandl52b92cc2008-05-25 09:43:03 +00001142- range() now returns an iterator rather than a list. Floats are not
1143 allowed. xrange() is no longer defined.
Guido van Rossum805365e2007-05-07 22:24:25 +00001144
Nick Coghlan650f0d02007-04-15 12:05:43 +00001145- Patch #1660500: hide iteration variable in list comps, add set comps
Georg Brandl52b92cc2008-05-25 09:43:03 +00001146 and use common code to handle compilation of iterative expressions.
Nick Coghlan650f0d02007-04-15 12:05:43 +00001147
Guido van Rossume27dc722007-03-27 22:37:34 +00001148- By default, != returns the opposite of ==, unless the latter returns
1149 NotImplemented.
1150
Georg Brandl52b92cc2008-05-25 09:43:03 +00001151- Patch #1680961: sys.exitfunc has been removed and replaced with a
1152 private C-level API.
Collin Winter670e6922007-03-21 02:57:17 +00001153
Georg Brandl801dd732007-03-18 20:18:31 +00001154- PEP 3115: new metaclasses: the metaclass is now specified as a
Georg Brandl52b92cc2008-05-25 09:43:03 +00001155 keyword arg in the class statement, which can now use the full
1156 syntax of a parameter list. Also, the metaclass can implement a
1157 __prepare__ function which will be called to create the dictionary
1158 for the new class namespace.
Georg Brandl801dd732007-03-18 20:18:31 +00001159
Georg Brandl428f0642007-03-18 18:35:15 +00001160- The long-deprecated argument "pend" of PyFloat_FromString() has been
1161 removed.
1162
Georg Brandle32b4222007-03-10 22:13:27 +00001163- The dir() function has been extended to call the __dir__() method on
Georg Brandl52b92cc2008-05-25 09:43:03 +00001164 its argument, if it exists. If not, it will work like before. This
1165 allows customizing the output of dir() in the presence of a
1166 __getattr__().
Brett Cannonba7bf492007-02-27 00:15:55 +00001167
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001168- Removed support for __members__ and __methods__.
1169
Georg Brandle32b4222007-03-10 22:13:27 +00001170- Removed indexing/slicing on BaseException.
Neal Norwitz2633c692007-02-26 22:22:47 +00001171
Georg Brandle32b4222007-03-10 22:13:27 +00001172- input() became raw_input(): the name input() now implements the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001173 functionality formerly known as raw_input(); the name raw_input() is
1174 no longer defined.
Guido van Rossum0240b922007-02-26 21:23:50 +00001175
Georg Brandl52b92cc2008-05-25 09:43:03 +00001176- Classes listed in an 'except' clause must inherit from
1177 BaseException.
Brett Cannonf74225d2007-02-26 21:10:16 +00001178
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001179- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
Guido van Rossumcf1be882007-08-30 22:07:17 +00001180 and .keys(), .items(), .values() return dict views, which behave
1181 like sets.
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001182
Guido van Rossum8b545362007-02-09 23:52:14 +00001183- PEP 3105: print is now a function. Also (not in the PEP) the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001184 'softspace' attribute of files is now gone (since print() doesn't
1185 use it). A side effect of this change is that you can get
1186 incomplete output lines in interactive sessions:
Guido van Rossum8b545362007-02-09 23:52:14 +00001187
1188 >>> print(42, end="")
Kurt B. Kaiser2c7f3142007-08-30 21:52:19 +00001189 42>>>
Guido van Rossum8b545362007-02-09 23:52:14 +00001190
1191 We may be able to fix this after the I/O library rewrite.
Guido van Rossum4502c802007-02-09 05:42:38 +00001192
Brett Cannon398db8b2007-01-29 23:44:37 +00001193- PEP 3102: keyword-only arguments.
1194
Georg Brandl52b92cc2008-05-25 09:43:03 +00001195- Int/Long unification is complete. The 'long' built-in type and
1196 literals with trailing 'L' or 'l' have been removed. Performance
1197 may be sub-optimal (haven't really benchmarked).
Guido van Rossumab186842007-01-14 03:42:30 +00001198
1199- 'except E, V' must now be spelled as 'except E as V' and deletes V
1200 at the end of the except clause; V must be a simple name.
1201
Neal Norwitzc1505362006-12-28 06:47:50 +00001202- Added function annotations per PEP 3107.
1203
Georg Brandl52b92cc2008-05-25 09:43:03 +00001204- Added nonlocal declaration from PEP 3104:
Jeremy Hyltona4f9fc62007-02-27 15:53:28 +00001205
1206 >>> def f(x):
1207 ... def inc():
1208 ... nonlocal x
1209 ... x += 1
1210 ... return x
1211 ... return inc
1212 ...
1213 >>> inc = f(0)
1214 >>> inc()
1215 1
1216 >>> inc()
1217 2
1218
Georg Brandl66a796e2006-12-19 20:50:34 +00001219- Moved intern() to sys.intern().
1220
1221- exec is now a function.
1222
1223- Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__.
Jack Diederich4dafcc42006-11-28 19:15:13 +00001224
Neal Norwitz4886cc32006-08-21 17:06:07 +00001225- Classic classes are a thing of the past. All classes are new style.
1226
1227- Exceptions *must* derive from BaseException.
1228
1229- Integer division always returns a float. The -Q option is no more.
1230 All the following are gone:
1231 * PyNumber_Divide and PyNumber_InPlaceDivide
1232 * __div__, __rdiv__, and __idiv__
1233 * nb_divide, nb_inplace_divide
1234 * operator.div, operator.idiv, operator.__div__, operator.__idiv__
1235 (Only __truediv__ and __floordiv__ remain, not sure how to handle them
1236 if we want to re-use __div__ and friends. If we do, it will make
1237 it harder to write code for both 2.x and 3.x.)
1238
1239- 'as' and 'with' are keywords.
1240
1241- Absolute import is the default behavior for 'import foo' etc.
1242
Georg Brandl52b92cc2008-05-25 09:43:03 +00001243- Removed support for syntax: backticks (ie, `x`), <>.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001244
Georg Brandl52b92cc2008-05-25 09:43:03 +00001245- Removed these Python builtins: apply(), callable(), coerce(),
1246 execfile(), file(), reduce(), reload().
Neal Norwitz4886cc32006-08-21 17:06:07 +00001247
Georg Brandl52b92cc2008-05-25 09:43:03 +00001248- Removed these Python methods: {}.has_key.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001249
Georg Brandl52b92cc2008-05-25 09:43:03 +00001250- Removed these opcodes: BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001251
1252- Remove C API support for restricted execution.
1253
Guido van Rossumcf1be882007-08-30 22:07:17 +00001254- zip(), map() and filter() now return iterators, behaving like their
Georg Brandl52b92cc2008-05-25 09:43:03 +00001255 itertools counterparts. This also affect map()'s behavior on
Guido van Rossumcf1be882007-08-30 22:07:17 +00001256 sequences of unequal length -- it now stops after the shortest one
1257 is exhausted.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001258
Georg Brandl52b92cc2008-05-25 09:43:03 +00001259- Additions: set literals, set comprehensions, ellipsis literal.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001260
1261- Added class decorators per PEP 3129.
1262
1263
1264Extension Modules
1265-----------------
1266
Georg Brandl52b92cc2008-05-25 09:43:03 +00001267- Removed the imageop module. Obsolete long with its unit tests
1268 becoming useless from the removal of rgbimg and imgfile.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001269
Georg Brandl52b92cc2008-05-25 09:43:03 +00001270- Removed these attributes from the operator module: div, idiv,
1271 __div__, __idiv__, isCallable, sequenceIncludes.
1272
1273- Removed these attributes from the sys module: exc_clear(), exc_type,
1274 exc_value, exc_traceback.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001275
1276
1277Library
1278-------
1279
Georg Brandl52b92cc2008-05-25 09:43:03 +00001280- Removed the compiler package. Use of the _ast module and (an
1281 eventual) AST -> bytecode mechanism.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001282
Georg Brandl52b92cc2008-05-25 09:43:03 +00001283- Removed these modules: audiodev, Bastion, bsddb185, exceptions,
1284 linuxaudiodev, md5, MimeWriter, mimify, popen2, rexec, sets, sha,
1285 stringold, strop, sunaudiodev, timing, xmllib.
Guido van Rossum33d26892007-08-05 15:29:28 +00001286
Georg Brandl52b92cc2008-05-25 09:43:03 +00001287- Moved the toaiff module to Tools/Demos.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001288
Georg Brandl52b92cc2008-05-25 09:43:03 +00001289- Removed obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL,
1290 DEVICE, ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile,
1291 IOCTL, jpeg, panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001292
Georg Brandl52b92cc2008-05-25 09:43:03 +00001293- Removed obsolete functions: commands.getstatus(), os.popen*().
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001294
Georg Brandl52b92cc2008-05-25 09:43:03 +00001295- Removed functions in the string module that are also string methods;
Martin v. Löwis967f1e32007-08-14 09:23:10 +00001296 Remove string.{letters, lowercase, uppercase}.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001297
Georg Brandl52b92cc2008-05-25 09:43:03 +00001298- Removed support for long obsolete platforms: plat-aix3, plat-irix5.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001299
Georg Brandl52b92cc2008-05-25 09:43:03 +00001300- Removed xmlrpclib.SlowParser. It was based on xmllib.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001301
1302- Patch #1680961: atexit has been reimplemented in C.
1303
Walter Dörwald41980ca2007-08-16 21:55:45 +00001304- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
1305
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001306Build
1307-----
1308
1309C API
1310-----
1311
Georg Brandl52b92cc2008-05-25 09:43:03 +00001312- Removed these Python slots: __coerce__, __div__, __idiv__, __rdiv__.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001313
Georg Brandl52b92cc2008-05-25 09:43:03 +00001314- Removed these C APIs: PyNumber_Coerce(), PyNumber_CoerceEx(),
1315 PyMember_Get, PyMember_Set.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001316
Georg Brandl52b92cc2008-05-25 09:43:03 +00001317- Removed these C slots/fields: nb_divide, nb_inplace_divide.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001318
Georg Brandl52b92cc2008-05-25 09:43:03 +00001319- Removed these macros: staticforward, statichere, PyArg_GetInt,
1320 PyArg_NoArgs, _PyObject_Del.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001321
Georg Brandl52b92cc2008-05-25 09:43:03 +00001322- Removed these typedefs: intargfunc, intintargfunc, intobjargproc,
1323 intintobjargproc, getreadbufferproc, getwritebufferproc,
1324 getsegcountproc, getcharbufferproc, memberlist.
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001325
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001326Tests
1327-----
1328
Brett Cannone7a30f72008-03-03 03:36:27 +00001329- Removed test.testall as test.regrtest replaces it.
1330
Brett Cannonced04e02005-02-13 22:53:22 +00001331Documentation
1332-------------
1333
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001334Mac
1335---
1336
Georg Brandl52b92cc2008-05-25 09:43:03 +00001337- The cfmfile module was removed.
Guido van Rossume7ba4952007-06-06 23:52:48 +00001338
Guido van Rossum845702c2007-08-30 18:44:53 +00001339Platforms
1340---------
1341
1342- Support for BeOS and AtheOS was removed (according to PEP 11).
1343
1344- Support for RiscOS, Irix, Tru64 was removed (alledgedly).
1345
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001346Tools/Demos
1347-----------
1348
Georg Brandl52b92cc2008-05-25 09:43:03 +00001349
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001350**(For information about older versions, consult the HISTORY file.)**