Skip Montanaro | e5d7f7f | 2002-09-20 14:16:59 +0000 | [diff] [blame] | 1 | +++++++++++ |
| 2 | Python News |
| 3 | +++++++++++ |
| 4 | |
Anthony Baxter | b0c6630 | 2004-11-04 05:23:17 +0000 | [diff] [blame] | 5 | (editors: check NEWS.help for information about editing NEWS using ReST.) |
| 6 | |
Barry Warsaw | a9d499d | 2008-03-01 18:38:07 +0000 | [diff] [blame] | 7 | What's New in Python 3.0a4? |
| 8 | =========================== |
| 9 | |
| 10 | *Release date: XX-XXX-2008* |
| 11 | |
Martin v. Löwis | 2593146 | 2008-03-17 20:43:42 +0000 | [diff] [blame] | 12 | Core and Builtins |
| 13 | ----------------- |
| 14 | |
| 15 | - Bug #2301: Don't try decoding the source code into the original |
| 16 | encoding for syntax errors. |
| 17 | |
Martin v. Löwis | 92fab75 | 2008-03-08 10:40:41 +0000 | [diff] [blame] | 18 | Extension Modules |
| 19 | ----------------- |
| 20 | |
| 21 | - Use wchar_t functions in _locale module. |
Barry Warsaw | a9d499d | 2008-03-01 18:38:07 +0000 | [diff] [blame] | 22 | |
Martin v. Löwis | 071ef77 | 2008-03-08 11:24:24 +0000 | [diff] [blame] | 23 | Library |
| 24 | ------- |
| 25 | |
| 26 | - Default to ASCII as the locale.getpreferredencoding, if the POSIX |
| 27 | system doesn't support CODESET and LANG isn't set or doesn't |
| 28 | allow deduction of an encoding. |
| 29 | |
Gregory P. Smith | 425136b | 2008-03-17 20:45:21 +0000 | [diff] [blame^] | 30 | - Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned value. |
| 31 | |
Barry Warsaw | a9d499d | 2008-03-01 18:38:07 +0000 | [diff] [blame] | 32 | |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 33 | What's New in Python 3.0a3? |
| 34 | =========================== |
| 35 | |
Barry Warsaw | 659fc42 | 2008-03-01 17:45:23 +0000 | [diff] [blame] | 36 | *Release date: 29-Feb-2008* |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 37 | |
| 38 | Core and Builtins |
| 39 | ----------------- |
| 40 | |
Ka-Ping Yee | ddaa706 | 2008-03-17 20:35:15 +0000 | [diff] [blame] | 41 | - Issue #2282: io.TextIOWrapper was not overriding seekable() from io.IOBase. |
| 42 | |
Christian Heimes | a156e09 | 2008-02-16 07:38:31 +0000 | [diff] [blame] | 43 | - Issue #2115: Important speedup in setting __slot__ attributes. Also |
| 44 | prevent a possible crash: an Abstract Base Class would try to access a slot |
| 45 | on a registered virtual subclass. |
| 46 | |
| 47 | - Fixed repr() and str() of complex numbers with infinity or nan as real or |
| 48 | imaginary part. |
| 49 | |
| 50 | - Clear all free list during a gc.collect() of the highest generation in order |
| 51 | to allow pymalloc to free more arenas. Python may give back memory to the |
| 52 | OS earlier. |
| 53 | |
| 54 | - Issue #2045: Fix an infinite recursion triggered when printing a subclass of |
| 55 | collections.defaultdict, if its default_factory is set to a bound method. |
| 56 | |
| 57 | - Fixed a minor memory leak in dictobject.c. The content of the free |
| 58 | list was not freed on interpreter shutdown. |
| 59 | |
| 60 | - Limit free list of method and builtin function objects to 256 entries |
| 61 | each. |
| 62 | |
| 63 | - Patch #1953: Added ``sys._compact_freelists()`` and the C API functions |
| 64 | ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList`` |
| 65 | to compact the internal free lists of pre-allocted ints and floats. |
| 66 | |
| 67 | - Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls. |
| 68 | Python expected the return type int but the fork familie returns pi_t. |
| 69 | |
| 70 | - Issue #1678380: Fix a bug that identifies 0j and -0j when they appear |
| 71 | in the same code unit. |
| 72 | |
Raymond Hettinger | 65baa34 | 2008-02-07 00:41:02 +0000 | [diff] [blame] | 73 | - Issue #2025 : Add tuple.count() and tuple.index() methods to comply with |
| 74 | the collections.Sequence API. |
| 75 | |
Christian Heimes | dfc12ed | 2008-01-31 15:16:38 +0000 | [diff] [blame] | 76 | - Fixed multiple reinitialization of the Python interpreter. The small int |
| 77 | list in longobject.c has caused a seg fault during the third finalization. |
| 78 | |
Christian Heimes | c04dac0 | 2008-01-30 11:27:57 +0000 | [diff] [blame] | 79 | - Issue #1973: bytes.fromhex('') raises SystemError |
| 80 | |
Raymond Hettinger | 70b64fc | 2008-01-30 20:15:17 +0000 | [diff] [blame] | 81 | - Issue #1771: remove cmp parameter from sorted() and list.sort() |
| 82 | |
Christian Heimes | 7b87615 | 2008-01-30 09:51:48 +0000 | [diff] [blame] | 83 | - Issue #1969: split and rsplit in bytearray are inconsistent |
| 84 | |
Raymond Hettinger | 736c0ab | 2008-03-13 02:09:15 +0000 | [diff] [blame] | 85 | - map() and no longer accepts None for the first argument. |
Raymond Hettinger | 1dfde1d | 2008-01-22 23:25:35 +0000 | [diff] [blame] | 86 | Use zip() instead. |
| 87 | |
Facundo Batista | 2336bdd | 2008-01-19 19:12:01 +0000 | [diff] [blame] | 88 | - Issue #1769: Now int("- 1") is not allowed any more. |
| 89 | |
Christian Heimes | 386cd1e | 2008-01-15 02:01:20 +0000 | [diff] [blame] | 90 | - Object/longobject.c: long(float('nan')) raises an OverflowError instead |
| 91 | of returning 0. |
| 92 | |
Christian Heimes | 3b06e53 | 2008-01-07 20:12:44 +0000 | [diff] [blame] | 93 | - Issue #1762972: __file__ points to the source file instead of the pyc/pyo |
| 94 | file if the py file exists. |
| 95 | |
Guido van Rossum | ab078dd | 2008-01-06 00:09:11 +0000 | [diff] [blame] | 96 | - Issue #1393: object_richcompare() returns NotImplemented instead of |
| 97 | False if the objects aren't equal, to give the other side a chance. |
| 98 | |
Guido van Rossum | e239b00 | 2008-01-06 00:44:20 +0000 | [diff] [blame] | 99 | - Issue #1692: Interpreter was not displaying location of SyntaxError. |
Kurt B. Kaiser | 43b1509 | 2008-01-05 04:32:22 +0000 | [diff] [blame] | 100 | |
Amaury Forgeot d'Arc | bccd63c | 2008-01-04 01:21:27 +0000 | [diff] [blame] | 101 | - Improve some exception messages when Windows fails to load an extension |
| 102 | module. Now we get for example '%1 is not a valid Win32 application' instead |
| 103 | of 'error code 193'. Also use Unicode strings to deal with non-English |
| 104 | locales. |
| 105 | |
Christian Heimes | a3534a6 | 2007-12-11 19:56:40 +0000 | [diff] [blame] | 106 | - Issue #1587: Added instancemethod wrapper for PyCFunctions. The Python C API |
| 107 | has gained a new type *PyInstanceMethod_Type* and the functions |
| 108 | *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)* and |
| 109 | *PyInstanceMethod_Function(im)*. |
| 110 | |
Amaury Forgeot d'Arc | ad8dcd5 | 2007-12-10 23:58:35 +0000 | [diff] [blame] | 111 | - Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed from the |
| 112 | gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE are now enough to |
| 113 | print the corresponding list of objects considered by the garbage collector. |
| 114 | |
Guido van Rossum | e239b00 | 2008-01-06 00:44:20 +0000 | [diff] [blame] | 115 | - Issue #1573: Improper use of the keyword-only syntax makes the parser crash. |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 116 | |
Christian Heimes | 0ded5b5 | 2007-12-10 15:50:56 +0000 | [diff] [blame] | 117 | - Issue #1564: The set implementation should special-case PyUnicode instead |
Guido van Rossum | e239b00 | 2008-01-06 00:44:20 +0000 | [diff] [blame] | 118 | of PyString. |
Christian Heimes | 0ded5b5 | 2007-12-10 15:50:56 +0000 | [diff] [blame] | 119 | |
Guido van Rossum | ea6775b | 2008-02-21 20:16:31 +0000 | [diff] [blame] | 120 | - Patch #1031213: Decode source line in SyntaxErrors back to its |
| 121 | original source encoding. |
Christian Heimes | 7131fd9 | 2008-02-19 14:21:46 +0000 | [diff] [blame] | 122 | |
Christian Heimes | 09aaa88 | 2008-02-23 15:01:06 +0000 | [diff] [blame] | 123 | - inspect.getsource() includes the decorators again. |
| 124 | |
Guido van Rossum | ea6775b | 2008-02-21 20:16:31 +0000 | [diff] [blame] | 125 | - Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a |
| 126 | mountpoint. |
Christian Heimes | 7131fd9 | 2008-02-19 14:21:46 +0000 | [diff] [blame] | 127 | |
Christian Heimes | 7131fd9 | 2008-02-19 14:21:46 +0000 | [diff] [blame] | 128 | - Fix utf-8-sig incremental decoder, which didn't recognise a BOM when the |
Guido van Rossum | ea6775b | 2008-02-21 20:16:31 +0000 | [diff] [blame] | 129 | first chunk fed to the decoder started with a BOM, but was longer than 3 |
| 130 | bytes. |
Christian Heimes | 7131fd9 | 2008-02-19 14:21:46 +0000 | [diff] [blame] | 131 | |
Christian Heimes | 7131fd9 | 2008-02-19 14:21:46 +0000 | [diff] [blame] | 132 | |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 133 | Extension Modules |
| 134 | ----------------- |
| 135 | |
Raymond Hettinger | 736c0ab | 2008-03-13 02:09:15 +0000 | [diff] [blame] | 136 | - Code for itertools ifilter(), imap(), and izip() moved to bultins and |
| 137 | renamed to filter(), map(), and zip(). Also, renamed izip_longest() |
| 138 | to zip_longest() and ifilterfalse() to filterfalse(). |
| 139 | |
Christian Heimes | 043d6f6 | 2008-01-07 17:19:16 +0000 | [diff] [blame] | 140 | - Issue #1762972: Readded the reload() function as imp.reload() |
Guido van Rossum | ea6775b | 2008-02-21 20:16:31 +0000 | [diff] [blame] | 141 | |
Christian Heimes | a156e09 | 2008-02-16 07:38:31 +0000 | [diff] [blame] | 142 | - Bug #2111: mmap segfaults when trying to write a block opened with PROT_READ |
| 143 | |
| 144 | - #2063: correct order of utime and stime in os.times() result on Windows. |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 145 | |
Christian Heimes | 7131fd9 | 2008-02-19 14:21:46 +0000 | [diff] [blame] | 146 | |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 147 | Library |
| 148 | ------- |
| 149 | |
Raymond Hettinger | 48b8b66 | 2008-02-05 01:53:00 +0000 | [diff] [blame] | 150 | - Weakref dictionaries now inherit from MutableMapping. |
| 151 | XXX their API still needs to be modernized (i.e. eliminate the iter methods). |
| 152 | |
| 153 | - Created new UserDict class in collections module. This one inherits from and |
Raymond Hettinger | b3a65f8 | 2008-02-21 22:11:37 +0000 | [diff] [blame] | 154 | complies with the MutableMapping ABC. Also, moved UserString and UserList |
| 155 | to the collections module. The MutableUserString class was removed. |
Raymond Hettinger | 48b8b66 | 2008-02-05 01:53:00 +0000 | [diff] [blame] | 156 | |
Guido van Rossum | ea6775b | 2008-02-21 20:16:31 +0000 | [diff] [blame] | 157 | - Removed UserDict.DictMixin. Replaced all its uses with |
| 158 | collections.MutableMapping. |
Raymond Hettinger | edf3b73 | 2008-02-04 22:07:15 +0000 | [diff] [blame] | 159 | |
Guido van Rossum | e239b00 | 2008-01-06 00:44:20 +0000 | [diff] [blame] | 160 | - Issue #1703: getpass() should flush after writing prompt. |
Christian Heimes | fc5aa9d | 2007-12-11 09:00:01 +0000 | [diff] [blame] | 161 | |
Guido van Rossum | e239b00 | 2008-01-06 00:44:20 +0000 | [diff] [blame] | 162 | - Issue #1585: IDLE uses non-existent xrange() function. |
| 163 | |
| 164 | - Issue #1578: Problems in win_getpass. |
| 165 | |
| 166 | |
Georg Brandl | 52d168a | 2008-01-07 18:10:24 +0000 | [diff] [blame] | 167 | Build |
| 168 | ----- |
| 169 | |
| 170 | - Renamed --enable-unicode configure flag to --with-wide-unicode, since |
| 171 | Unicode strings can't be disabled anymore. |
| 172 | |
| 173 | |
Guido van Rossum | e239b00 | 2008-01-06 00:44:20 +0000 | [diff] [blame] | 174 | C API |
| 175 | ----- |
| 176 | |
| 177 | - Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, |
| 178 | Py_TYPE and Py_REFCNT. |
| 179 | |
| 180 | - New API PyImport_ImportModuleNoBlock(), works like PyImport_ImportModule() |
| 181 | but won't block on the import lock (returning an error instead). |
Christian Heimes | 0ec88b3 | 2007-12-10 17:02:00 +0000 | [diff] [blame] | 182 | |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 183 | |
Fred Drake | 0e474a8 | 2007-10-11 18:01:43 +0000 | [diff] [blame] | 184 | What's New in Python 3.0a2? |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 185 | =========================== |
Fred Drake | 0e474a8 | 2007-10-11 18:01:43 +0000 | [diff] [blame] | 186 | |
Guido van Rossum | 99533a9 | 2007-12-06 05:07:41 +0000 | [diff] [blame] | 187 | *Release date: 07-Dec-2007* |
| 188 | |
| 189 | (Note: this list is incomplete.) |
Fred Drake | 0e474a8 | 2007-10-11 18:01:43 +0000 | [diff] [blame] | 190 | |
Guido van Rossum | 40d20bc | 2007-10-22 00:09:51 +0000 | [diff] [blame] | 191 | Core and Builtins |
| 192 | ----------------- |
| 193 | |
Brett Cannon | 37f7e6e | 2007-10-26 05:42:09 +0000 | [diff] [blame] | 194 | - str8 now has the same construction signature as bytes. |
| 195 | |
Brett Cannon | 4043001 | 2007-10-22 20:24:51 +0000 | [diff] [blame] | 196 | - Comparisons between str and str8 now return False/True for ==/!=. sqlite3 |
| 197 | returns str8 when recreating on object from it's __conform__ value. The |
| 198 | struct module returns str8 for all string-related formats. This was true |
| 199 | before this change, but becomes more apparent thanks to string comparisons |
| 200 | always being False. |
| 201 | |
Guido van Rossum | 40d20bc | 2007-10-22 00:09:51 +0000 | [diff] [blame] | 202 | - Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode, buffer, |
| 203 | encoding, newline)` |
| 204 | |
| 205 | - Fixed `imp.find_module()` to obey the -*- coding: -*- header. |
| 206 | |
| 207 | - Changed `__file__` and `co_filename` to unicode. The path names are decoded |
| 208 | with `Py_FileSystemDefaultEncoding` and a new API method |
| 209 | `PyUnicode_DecodeFSDefault(char*)` was added. |
| 210 | |
Guido van Rossum | 2dced8b | 2007-10-30 17:27:30 +0000 | [diff] [blame] | 211 | - io.open() and _fileio.FileIO have grown a new argument closefd. A false |
| 212 | value disables the closing of the file descriptor. |
| 213 | |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 214 | - Added a new option -b to issues warnings (-bb for errors) about certain |
| 215 | operations between bytes/buffer and str like str(b'') and comparsion. |
| 216 | |
Christian Heimes | 58cb1b8 | 2007-11-13 02:19:40 +0000 | [diff] [blame] | 217 | - The standards streams sys.stdin, stdout and stderr may be None when the |
| 218 | when the C runtime library returns an invalid file descriptor for the |
| 219 | streams (fileno(stdin) < 0). For now this happens only for Windows GUI |
| 220 | apps and scripts started with `pythonw.exe`. |
| 221 | |
Christian Heimes | bce52be | 2007-11-17 19:08:41 +0000 | [diff] [blame] | 222 | - Added PCbuild9 directory for VS 2008. |
| 223 | |
| 224 | - Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to work |
| 225 | around a name clash with VS 2008 on Windows. |
| 226 | |
Christian Heimes | ff73795 | 2007-11-27 10:40:20 +0000 | [diff] [blame] | 227 | - Unbound methods are gone for good. ClassObject.method returns an ordinary |
| 228 | function object, instance.method still returns a bound method object. |
| 229 | The API of bound methods is cleaned up, too. The im_class attribute is |
| 230 | removed and im_func + im_self are renamed to __func__ and __self__. The |
| 231 | factory PyMethod_New takes only func and instance as argument. |
| 232 | |
Christian Heimes | f78b1c6 | 2007-12-02 16:52:32 +0000 | [diff] [blame] | 233 | - intobject.h is no longer included by Python.h. The remains were moved |
| 234 | to longobject.h. It still exists to define several aliases from PyInt_ |
| 235 | to PyLong_ functions. |
| 236 | |
Christian Heimes | a37d4c6 | 2007-12-04 23:02:19 +0000 | [diff] [blame] | 237 | - Removed sys.maxint, use sys.maxsize instead. |
| 238 | |
Christian Heimes | bce52be | 2007-11-17 19:08:41 +0000 | [diff] [blame] | 239 | |
Fred Drake | 0e474a8 | 2007-10-11 18:01:43 +0000 | [diff] [blame] | 240 | Extension Modules |
| 241 | ----------------- |
| 242 | |
| 243 | - The `hotshot` profiler has been removed; use `cProfile` instead. |
| 244 | |
| 245 | |
Brett Cannon | e9fd231 | 2007-10-12 19:18:19 +0000 | [diff] [blame] | 246 | Library |
| 247 | ------- |
| 248 | |
| 249 | - When loading an external file using testfile(), the passed-in encoding |
| 250 | argument was being ignored if __loader__ is defined and forcing the source to |
| 251 | be UTF-8. |
| 252 | |
Guido van Rossum | 687b9c0 | 2007-10-25 23:18:51 +0000 | [diff] [blame] | 253 | - The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have been |
| 254 | removed in favor of the tempfile module. |
| 255 | |
Christian Heimes | c9543e4 | 2007-11-28 08:28:28 +0000 | [diff] [blame] | 256 | - Removed the 'new' module. |
| 257 | |
| 258 | - Removed all types from the 'types' module that are easily accessable through |
| 259 | builtins. |
Brett Cannon | e9fd231 | 2007-10-12 19:18:19 +0000 | [diff] [blame] | 260 | |
Georg Brandl | 52d168a | 2008-01-07 18:10:24 +0000 | [diff] [blame] | 261 | |
Guido van Rossum | 4405cf3 | 2007-08-30 17:16:55 +0000 | [diff] [blame] | 262 | What's New in Python 3.0a1? |
Guido van Rossum | 45aecf4 | 2006-03-15 04:58:47 +0000 | [diff] [blame] | 263 | ========================== |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 264 | |
Guido van Rossum | 4405cf3 | 2007-08-30 17:16:55 +0000 | [diff] [blame] | 265 | *Release date: 31-Aug-2007* |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 266 | |
| 267 | Core and Builtins |
| 268 | ----------------- |
| 269 | |
Martin v. Löwis | 4738340 | 2007-08-15 07:32:56 +0000 | [diff] [blame] | 270 | - PEP 3131: Support non-ASCII identifiers. |
| 271 | |
Martin v. Löwis | 447d33e | 2007-07-29 18:10:01 +0000 | [diff] [blame] | 272 | - PEP 3120: Change default encoding to UTF-8. |
| 273 | |
Martin v. Löwis | 9f2e346 | 2007-07-21 17:22:18 +0000 | [diff] [blame] | 274 | - PEP 3123: Use proper C inheritance for PyObject. |
| 275 | |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 276 | - Removed the __oct__ and __hex__ special methods and added a bin() |
| 277 | builtin function. |
| 278 | |
| 279 | - PEP 3127: octal literals now start with "0o". Old-style octal literals |
| 280 | are invalid. There are binary literals with a prefix of "0b". |
| 281 | This also affects int(x, 0). |
| 282 | |
Guido van Rossum | e7ba495 | 2007-06-06 23:52:48 +0000 | [diff] [blame] | 283 | - None, True, False are now keywords. |
| 284 | |
Guido van Rossum | 29478ef | 2007-05-29 00:39:44 +0000 | [diff] [blame] | 285 | - PEP 3119: isinstance() and issubclass() can be overridden. |
| 286 | |
Guido van Rossum | ebe3e16 | 2007-05-17 18:20:34 +0000 | [diff] [blame] | 287 | - Remove BaseException.message. |
| 288 | |
Guido van Rossum | 1bc535d | 2007-05-15 18:46:22 +0000 | [diff] [blame] | 289 | - Remove tuple parameter unpacking (PEP 3113). |
| 290 | |
Kurt B. Kaiser | 2c7f314 | 2007-08-30 21:52:19 +0000 | [diff] [blame] | 291 | - Remove the f_restricted attribute from frames. This naturally leads to the |
Guido van Rossum | a8add0e | 2007-05-14 22:03:55 +0000 | [diff] [blame] | 292 | removal of PyEval_GetRestricted() and PyFrame_IsRestricted(). |
| 293 | |
Guido van Rossum | 0368b72 | 2007-05-11 16:50:42 +0000 | [diff] [blame] | 294 | - PEP 3132 was accepted. That means that you can do ``a, *b = range(5)`` |
| 295 | to assign 0 to a and [1, 2, 3, 4] to b. |
| 296 | |
Guido van Rossum | 805365e | 2007-05-07 22:24:25 +0000 | [diff] [blame] | 297 | - range() now returns an iterator rather than a list. Floats are not allowed. |
| 298 | xrange() is no longer defined. |
| 299 | |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 300 | - Patch #1660500: hide iteration variable in list comps, add set comps |
| 301 | and use common code to handle compilation of iterative expressions |
| 302 | |
Guido van Rossum | e27dc72 | 2007-03-27 22:37:34 +0000 | [diff] [blame] | 303 | - By default, != returns the opposite of ==, unless the latter returns |
| 304 | NotImplemented. |
| 305 | |
Collin Winter | 670e692 | 2007-03-21 02:57:17 +0000 | [diff] [blame] | 306 | - Patch #1680961: sys.exitfunc has been removed and replaced with a private |
| 307 | C-level API. |
| 308 | |
Georg Brandl | 801dd73 | 2007-03-18 20:18:31 +0000 | [diff] [blame] | 309 | - PEP 3115: new metaclasses: the metaclass is now specified as a |
| 310 | keyword arg in the class statement, which can now use the full syntax of |
| 311 | a parameter list. Also, the metaclass can implement a __prepare__ function |
| 312 | which will be called to create the dictionary for the new class namespace. |
| 313 | |
Georg Brandl | 428f064 | 2007-03-18 18:35:15 +0000 | [diff] [blame] | 314 | - The long-deprecated argument "pend" of PyFloat_FromString() has been |
| 315 | removed. |
| 316 | |
Georg Brandl | e32b422 | 2007-03-10 22:13:27 +0000 | [diff] [blame] | 317 | - The dir() function has been extended to call the __dir__() method on |
| 318 | its argument, if it exists. If not, it will work like before. This allows |
| 319 | customizing the output of dir() in the presence of a __getattr__(). |
Brett Cannon | ba7bf49 | 2007-02-27 00:15:55 +0000 | [diff] [blame] | 320 | |
Neal Norwitz | 8dfc4a9 | 2007-08-11 06:39:53 +0000 | [diff] [blame] | 321 | - Removed support for __members__ and __methods__. |
| 322 | |
Georg Brandl | e32b422 | 2007-03-10 22:13:27 +0000 | [diff] [blame] | 323 | - Removed indexing/slicing on BaseException. |
Neal Norwitz | 2633c69 | 2007-02-26 22:22:47 +0000 | [diff] [blame] | 324 | |
Georg Brandl | e32b422 | 2007-03-10 22:13:27 +0000 | [diff] [blame] | 325 | - input() became raw_input(): the name input() now implements the |
Guido van Rossum | 0240b92 | 2007-02-26 21:23:50 +0000 | [diff] [blame] | 326 | functionality formerly known as raw_input(); the name raw_input() |
| 327 | is no longer defined. |
| 328 | |
Brett Cannon | 3959046 | 2007-02-26 22:01:14 +0000 | [diff] [blame] | 329 | - Classes listed in an 'except' clause must inherit from BaseException. |
Brett Cannon | f74225d | 2007-02-26 21:10:16 +0000 | [diff] [blame] | 330 | |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 331 | - PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone; |
Guido van Rossum | cf1be88 | 2007-08-30 22:07:17 +0000 | [diff] [blame] | 332 | and .keys(), .items(), .values() return dict views, which behave |
| 333 | like sets. |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 334 | |
Guido van Rossum | 8b54536 | 2007-02-09 23:52:14 +0000 | [diff] [blame] | 335 | - PEP 3105: print is now a function. Also (not in the PEP) the |
| 336 | 'softspace' attribute of files is now gone (since print() doesn't use |
| 337 | it). A side effect of this change is that you can get incomplete |
| 338 | output lines in interactive sessions: |
| 339 | |
| 340 | >>> print(42, end="") |
Kurt B. Kaiser | 2c7f314 | 2007-08-30 21:52:19 +0000 | [diff] [blame] | 341 | 42>>> |
Guido van Rossum | 8b54536 | 2007-02-09 23:52:14 +0000 | [diff] [blame] | 342 | |
| 343 | We may be able to fix this after the I/O library rewrite. |
Guido van Rossum | 4502c80 | 2007-02-09 05:42:38 +0000 | [diff] [blame] | 344 | |
Brett Cannon | 398db8b | 2007-01-29 23:44:37 +0000 | [diff] [blame] | 345 | - PEP 3102: keyword-only arguments. |
| 346 | |
Guido van Rossum | d4588c1 | 2007-02-13 19:55:23 +0000 | [diff] [blame] | 347 | - Int/Long unification is complete. The 'long' built-in type |
Guido van Rossum | ec7027f | 2007-01-30 00:00:40 +0000 | [diff] [blame] | 348 | and literals with trailing 'L' or 'l' have been removed. |
| 349 | Performance may be sub-optimal (haven't really benchmarked). |
Guido van Rossum | ab18684 | 2007-01-14 03:42:30 +0000 | [diff] [blame] | 350 | |
| 351 | - 'except E, V' must now be spelled as 'except E as V' and deletes V |
| 352 | at the end of the except clause; V must be a simple name. |
| 353 | |
Neal Norwitz | c150536 | 2006-12-28 06:47:50 +0000 | [diff] [blame] | 354 | - Added function annotations per PEP 3107. |
| 355 | |
Jeremy Hylton | a4f9fc6 | 2007-02-27 15:53:28 +0000 | [diff] [blame] | 356 | - Added nonlocal declaration from PEP 3104 |
| 357 | |
| 358 | >>> def f(x): |
| 359 | ... def inc(): |
| 360 | ... nonlocal x |
| 361 | ... x += 1 |
| 362 | ... return x |
| 363 | ... return inc |
| 364 | ... |
| 365 | >>> inc = f(0) |
| 366 | >>> inc() |
| 367 | 1 |
| 368 | >>> inc() |
| 369 | 2 |
| 370 | |
Georg Brandl | 66a796e | 2006-12-19 20:50:34 +0000 | [diff] [blame] | 371 | - Moved intern() to sys.intern(). |
| 372 | |
| 373 | - exec is now a function. |
| 374 | |
| 375 | - Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__. |
Jack Diederich | 4dafcc4 | 2006-11-28 19:15:13 +0000 | [diff] [blame] | 376 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 377 | - Classic classes are a thing of the past. All classes are new style. |
| 378 | |
| 379 | - Exceptions *must* derive from BaseException. |
| 380 | |
| 381 | - Integer division always returns a float. The -Q option is no more. |
| 382 | All the following are gone: |
| 383 | * PyNumber_Divide and PyNumber_InPlaceDivide |
| 384 | * __div__, __rdiv__, and __idiv__ |
| 385 | * nb_divide, nb_inplace_divide |
| 386 | * operator.div, operator.idiv, operator.__div__, operator.__idiv__ |
| 387 | (Only __truediv__ and __floordiv__ remain, not sure how to handle them |
| 388 | if we want to re-use __div__ and friends. If we do, it will make |
| 389 | it harder to write code for both 2.x and 3.x.) |
| 390 | |
| 391 | - 'as' and 'with' are keywords. |
| 392 | |
| 393 | - Absolute import is the default behavior for 'import foo' etc. |
| 394 | |
Neal Norwitz | 378b2c9 | 2006-08-29 07:57:22 +0000 | [diff] [blame] | 395 | - Removed support for syntax: |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 396 | backticks (ie, `x`), <> |
Neal Norwitz | 378b2c9 | 2006-08-29 07:57:22 +0000 | [diff] [blame] | 397 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 398 | - Removed these Python builtins: |
Neal Norwitz | 0168802 | 2007-08-12 00:43:29 +0000 | [diff] [blame] | 399 | apply(), callable(), coerce(), execfile(), file(), reduce(), reload() |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 400 | |
Neal Norwitz | 378b2c9 | 2006-08-29 07:57:22 +0000 | [diff] [blame] | 401 | - Removed these Python methods: |
| 402 | {}.has_key |
| 403 | |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 404 | - Removed these opcodes: |
| 405 | BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT |
| 406 | |
| 407 | - Remove C API support for restricted execution. |
| 408 | |
Guido van Rossum | cf1be88 | 2007-08-30 22:07:17 +0000 | [diff] [blame] | 409 | - zip(), map() and filter() now return iterators, behaving like their |
| 410 | itertools counterparts. This also affect map()'s behavior on |
| 411 | sequences of unequal length -- it now stops after the shortest one |
| 412 | is exhausted. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 413 | |
| 414 | - Additions: |
Guido van Rossum | cf1be88 | 2007-08-30 22:07:17 +0000 | [diff] [blame] | 415 | set literals, set comprehensions, ellipsis literal. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 416 | |
| 417 | - Added class decorators per PEP 3129. |
| 418 | |
| 419 | |
| 420 | Extension Modules |
| 421 | ----------------- |
| 422 | |
| 423 | - Remove the imageop module. Obsolete long with its unit tests becoming |
| 424 | useless from the removal of rgbimg and imgfile. |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 425 | |
| 426 | - Removed these attributes from Python modules: |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 427 | * operator module: div, idiv, __div__, __idiv__, isCallable, sequenceIncludes |
Guido van Rossum | e7ba495 | 2007-06-06 23:52:48 +0000 | [diff] [blame] | 428 | * sys module: exc_clear(), exc_type, exc_value, exc_traceback |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 429 | |
| 430 | |
| 431 | Library |
| 432 | ------- |
| 433 | |
| 434 | - Remove the compiler package. Use of the _ast module and (an eventual) |
| 435 | AST -> bytecode mechanism. |
| 436 | |
| 437 | - Removed these modules: |
Guido van Rossum | 33d2689 | 2007-08-05 15:29:28 +0000 | [diff] [blame] | 438 | * audiodev, Bastion, bsddb185, exceptions, linuxaudiodev, |
| 439 | md5, MimeWriter, mimify, popen2, |
| 440 | rexec, sets, sha, stringold, strop, sunaudiodev, timing, xmllib. |
| 441 | |
| 442 | - Moved these modules to Tools/Demos: |
| 443 | * toaiff |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 444 | |
| 445 | - Remove obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL, DEVICE, |
| 446 | ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile, IOCTL, jpeg, |
| 447 | panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT. |
| 448 | |
| 449 | - Remove obsolete functions: |
| 450 | * commands.getstatus(), os.popen*, |
| 451 | |
Martin v. Löwis | 967f1e3 | 2007-08-14 09:23:10 +0000 | [diff] [blame] | 452 | - Remove functions in the string module that are also string methods; |
| 453 | Remove string.{letters, lowercase, uppercase}. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 454 | |
| 455 | - Remove support for long obsolete platforms: plat-aix3, plat-irix5. |
| 456 | |
| 457 | - Remove xmlrpclib.SlowParser. It was based on xmllib. |
| 458 | |
| 459 | - Patch #1680961: atexit has been reimplemented in C. |
| 460 | |
Walter Dörwald | 41980ca | 2007-08-16 21:55:45 +0000 | [diff] [blame] | 461 | - Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE. |
| 462 | |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 463 | |
| 464 | Build |
| 465 | ----- |
| 466 | |
| 467 | C API |
| 468 | ----- |
| 469 | |
| 470 | - Removed these Python slots: |
| 471 | __coerce__, __div__, __idiv__, __rdiv__ |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 472 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 473 | - Removed these C APIs: |
Neal Norwitz | 8dfc4a9 | 2007-08-11 06:39:53 +0000 | [diff] [blame] | 474 | PyNumber_Coerce(), PyNumber_CoerceEx(), PyMember_Get, PyMember_Set |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 475 | |
| 476 | - Removed these C slots/fields: |
| 477 | nb_divide, nb_inplace_divide |
| 478 | |
| 479 | - Removed these macros: |
Neal Norwitz | 30d1c51 | 2007-08-19 22:48:23 +0000 | [diff] [blame] | 480 | staticforward, statichere, PyArg_GetInt, PyArg_NoArgs, _PyObject_Del |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 481 | |
| 482 | - Removed these typedefs: |
| 483 | intargfunc, intintargfunc, intobjargproc, intintobjargproc, |
Neal Norwitz | 8dfc4a9 | 2007-08-11 06:39:53 +0000 | [diff] [blame] | 484 | getreadbufferproc, getwritebufferproc, getsegcountproc, getcharbufferproc, |
| 485 | memberlist |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 486 | |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 487 | |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 488 | Tests |
| 489 | ----- |
| 490 | |
Brett Cannon | e7a30f7 | 2008-03-03 03:36:27 +0000 | [diff] [blame] | 491 | - Removed test.testall as test.regrtest replaces it. |
| 492 | |
| 493 | |
Brett Cannon | ced04e0 | 2005-02-13 22:53:22 +0000 | [diff] [blame] | 494 | Documentation |
| 495 | ------------- |
| 496 | |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 497 | Mac |
| 498 | --- |
| 499 | |
Guido van Rossum | e7ba495 | 2007-06-06 23:52:48 +0000 | [diff] [blame] | 500 | - The cfmfile was removed. |
| 501 | |
| 502 | |
Guido van Rossum | 845702c | 2007-08-30 18:44:53 +0000 | [diff] [blame] | 503 | Platforms |
| 504 | --------- |
| 505 | |
| 506 | - Support for BeOS and AtheOS was removed (according to PEP 11). |
| 507 | |
| 508 | - Support for RiscOS, Irix, Tru64 was removed (alledgedly). |
| 509 | |
Hye-Shik Chang | 4e42281 | 2005-07-17 02:36:59 +0000 | [diff] [blame] | 510 | |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 511 | Tools/Demos |
| 512 | ----------- |
| 513 | |
Skip Montanaro | e5d7f7f | 2002-09-20 14:16:59 +0000 | [diff] [blame] | 514 | **(For information about older versions, consult the HISTORY file.)** |