blob: 98dae61c604fe0009ee1395d5ab2f2cd7643e734 [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.)
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Barry Warsaw97f005d2008-12-03 16:46:14 +00007What's New in Python 3.1 alpha 0
8================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +00009
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +000010*Release date: XX-XXX-200X*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000011
12Core and Builtins
13-----------------
14
Antoine Pitrou51f3ef92008-12-20 13:14:23 +000015- Issue #3106: Speedup some comparisons (str/str and int/int).
16
Antoine Pitrouf289ae62008-12-18 11:06:25 +000017- Issue #2183: Simplify and optimize bytecode for list, dict and set
18 comprehensions. Original patch for list comprehensions by Neal Norwitz.
19
Antoine Pitrou621601a2008-12-17 23:18:19 +000020- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
21 print elapsed times, not only when some objects are uncollectable /
22 unreachable. Original patch by Neil Schemenauer.
23
Mark Dickinson54bc1ec2008-12-17 16:19:07 +000024- Issue #3439: Add a bit_length method to int.
25
Mark Dickinsonda2706b2008-12-11 18:03:03 +000026- Issue #2173: When getting device encoding, check that return value of
27 nl_langinfo is not the empty string. This was causing silent build
28 failures on OS X.
29
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +000030- Issue #4597: Fixed several opcodes that weren't always propagating
31 exceptions.
32
33- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +000034 context manager returns a value that cannot be converted to a bool.
35
Mark Dickinsonfd24b322008-12-06 15:33:31 +000036- Issue #4445: Replace "sizeof(PyBytesObject)" with
37 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
38 bytes instances. On a typical machine this saves 3 bytes of memory
39 (on average) per allocation of a bytes instance.
40
Christian Heimesa872de52008-12-05 08:26:55 +000041- Issue #4533: File read operation was dreadfully slow due to a slowly
42 growing read buffer. Fixed by using the same growth rate algorithm as
43 Python 2.x.
44
Antoine Pitrou5504e892008-12-06 21:27:53 +000045- Issue #4509: Various issues surrounding resize of bytearray objects to
46 which there are buffer exports (e.g. memoryview instances).
47
Georg Brandlf9734072008-12-07 15:30:06 +000048- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
49 method on file objects with closefd=False. The file descriptor is still
50 kept open but the file object behaves like a closed file. The ``FileIO``
51 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +000052
Antoine Pitroubc420402008-12-07 20:14:49 +000053- Issue #4569: Interpreter crash when mutating a memoryview with an item size
54 larger than 1.
55
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000056Library
57-------
58
Antoine Pitrou180a3362008-12-14 16:36:46 +000059- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
60 boundary.
61
Nick Coghlanf088e5e2008-12-14 11:50:48 +000062- Issue #4223: inspect.getsource() will now correctly display source code
63 for packages loaded via zipimport (or any other conformant PEP 302
64 loader). Original patch by Alexander Belopolsky.
65
66- Issue #4201: pdb can now access and display source code loaded via
67 zipimport (or any other conformant PEP 302 loader). Original patch by
68 Alexander Belopolsky.
69
70- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
71 302 conformant loader) will now work correctly in most cases (they
72 are still subject to the constraints that exist for all code running
73 from inside a module loaded via a PEP 302 loader and attempting to
74 perform IO operations based on __file__). Original patch by
75 Alexander Belopolsky.
76
77- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
78 allows backporting to maintenance branches. Original patch by
79 Alexander Belopolsky.
80
Antoine Pitrou7c59bc62008-12-13 23:20:54 +000081- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
82 a non-ASCII letter.
83
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +000084- Issue #4616: TarFile.utime(): Restore directory times on Windows.
85
Benjamin Peterson433f32c2008-12-12 01:25:05 +000086- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
87 codec cannot be found. This is for compatibility with the builtin behavior.
88
Facundo Batista708d5812008-12-11 04:20:07 +000089- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
90 give correct results in the case where one argument is a quiet NaN
91 and the other is a finite number that requires rounding.
92
Skip Montanaroc1ce2862008-12-06 17:25:02 +000093- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
94 libs.
95
Georg Brandlf9734072008-12-07 15:30:06 +000096- Added the subprocess.check_call_output() convenience function to get output
97 from a subprocess on success or raise an exception on error.
98
99- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
100 support unusual filenames (such as those containing semi-colons) in
101 Content-Disposition headers.
102
103- Issue #4384: Added logging integration with warnings module using
104 captureWarnings(). This change includes a NullHandler which does nothing;
105 it will be of use to library developers who want to avoid the "No handlers
106 could be found for logger XXX" message which can appear if the library user
107 doesn't configure logging.
108
109- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
110 exception.
111
Georg Brandleee31162008-12-07 15:15:22 +0000112- Issue #4529: fix the parser module's validation of try-except-finally
113 statements.
114
115- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
116 not a malformed option.
117
118- Added the subprocess.check_output() convenience function to get output
119 from a subprocess on success or raise an exception on error.
120
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000121- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
122 the corresponding tests now pass.
123
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000124- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
125 it was calling the wrong open() function.
126
Fred Drake9a0a65b2008-12-04 19:24:50 +0000127- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
128 support unusual filenames (such as those containing semi-colons) in
129 Content-Disposition headers.
130
Mark Dickinsone675f082008-12-11 21:56:00 +0000131Extension Modules
132-----------------
133
134- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
135 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000136
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000137- Issue #4583: array.array would not always prohibit resizing when a buffer
138 has been exported, resulting in an interpreter crash when accessing the
139 buffer.
140
Martin v. Löwis841edad2008-11-30 10:36:49 +0000141Build
142-----
143
Martin v. Löwis841edad2008-11-30 10:36:49 +0000144
Brett Cannon7317c1e2008-11-25 19:19:17 +0000145Docs
146----
147
Georg Brandl52b92cc2008-05-25 09:43:03 +0000148
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000149**(For information about older versions, consult the HISTORY file.)**