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 | 8509df7 | 2008-08-21 03:02:47 +0000 | [diff] [blame] | 7 | What's New in Python 3.0 release candidate 1 |
| 8 | ============================================ |
| 9 | |
| 10 | *Release date: XX-XXXX-2008* |
| 11 | |
| 12 | Core and Builtins |
| 13 | ----------------- |
| 14 | |
Antoine Pitrou | fff9530 | 2008-09-03 18:58:51 +0000 | [diff] [blame] | 15 | - Issue #3696: Error parsing arguments on OpenBSD <= 4.4 and Cygwin. On |
| 16 | these systems, the mbstowcs() function is slightly buggy and must be |
| 17 | replaced with strlen() for the purpose of counting of number of wide |
| 18 | characters needed to represent the multi-byte character string. |
| 19 | |
Antoine Pitrou | 658fad8 | 2008-09-03 18:34:34 +0000 | [diff] [blame] | 20 | - Issue #3697: "Fatal Python error: Cannot recover from stack overflow" |
| 21 | could be easily encountered under Windows in debug mode when exercising |
| 22 | the recursion limit checking code, due to bogus handling of recursion |
| 23 | limit when USE_STACKCHEK was enabled. |
| 24 | |
Brett Cannon | 54bd41d | 2008-09-02 04:01:42 +0000 | [diff] [blame] | 25 | - Issue 3639: The _warnings module could segfault the interpreter when |
| 26 | unexpected types were passed in as arguments. |
| 27 | |
Antoine Pitrou | c6b09eb | 2008-09-01 15:10:14 +0000 | [diff] [blame] | 28 | - Issue #3712: The memoryview object had a reference leak and didn't support |
| 29 | cyclic garbage collection. |
| 30 | |
Antoine Pitrou | f7199578 | 2008-08-29 18:37:05 +0000 | [diff] [blame] | 31 | - Issue #3668: Fix a memory leak with the "s*" argument parser in |
| 32 | PyArg_ParseTuple and friends, which occurred when the argument for "s*" |
| 33 | was correctly parsed but parsing of subsequent arguments failed. |
| 34 | |
Amaury Forgeot d'Arc | db26f7c | 2008-08-29 07:13:32 +0000 | [diff] [blame] | 35 | - Issue #3611: An exception __context__ could be cleared in a complex pattern |
| 36 | involving a __del__ method re-raising an exception. |
| 37 | |
Antoine Pitrou | ec569b7 | 2008-08-26 22:40:48 +0000 | [diff] [blame] | 38 | - Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to |
| 39 | match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__ |
| 40 | mechanism. In the process, fix a bug where isinstance() and issubclass(), |
| 41 | when given a tuple of classes as second argument, were looking up |
| 42 | __instancecheck__ / __subclasscheck__ on the tuple rather than on each |
| 43 | type object. |
| 44 | |
Antoine Pitrou | e2dffc0 | 2008-08-26 22:02:58 +0000 | [diff] [blame] | 45 | - Issue #3663: Py_None was decref'd when printing SyntaxErrors. |
| 46 | |
Benjamin Peterson | 9edd2bd | 2008-08-27 00:31:37 +0000 | [diff] [blame] | 47 | - Issue #3651: Fix various memory leaks when using the buffer |
| 48 | interface, or when the "s#" code of PyArg_ParseTuple is given a |
| 49 | bytes object. |
| 50 | |
Neal Norwitz | 6ae2eb2 | 2008-08-24 23:50:08 +0000 | [diff] [blame] | 51 | - Issue #3657: Fix uninitialized memory read when pickling longs. |
| 52 | Found by valgrind. |
| 53 | |
Neal Norwitz | 3ce5d92 | 2008-08-24 07:08:55 +0000 | [diff] [blame] | 54 | - Apply security patches from Apple. |
| 55 | |
Neal Norwitz | 2f99b24 | 2008-08-24 05:48:10 +0000 | [diff] [blame] | 56 | - Fix crashes on memory allocation failure found with failmalloc. |
| 57 | |
| 58 | - Fix memory leaks found with valgrind and update suppressions file. |
| 59 | |
| 60 | - Fix compiler warnings in opt mode which would lead to invalid memory reads. |
| 61 | |
| 62 | - Fix problem using wrong name in decimal module reported by pychecker. |
| 63 | |
Amaury Forgeot d'Arc | 20443f3 | 2008-08-22 22:05:20 +0000 | [diff] [blame] | 64 | - Issue #3650: Fixed a reference leak in bytes.split('x'). |
| 65 | |
Benjamin Peterson | c15a073 | 2008-08-26 16:46:47 +0000 | [diff] [blame] | 66 | - bytes(o) now tries to use o.__bytes__() before using fallbacks. |
| 67 | |
| 68 | C API |
| 69 | ----- |
| 70 | |
| 71 | - PyObject_Bytes and PyBytes_FromObject were added. |
| 72 | |
Barry Warsaw | 8509df7 | 2008-08-21 03:02:47 +0000 | [diff] [blame] | 73 | Library |
| 74 | ------- |
| 75 | |
Benjamin Peterson | 6ba2332 | 2008-09-03 22:59:38 +0000 | [diff] [blame] | 76 | - The bsddb module (and therefore the dbm.bsd module) has been removed. |
Gregory P. Smith | 451e99b | 2008-09-04 04:46:48 +0000 | [diff] [blame^] | 77 | It is now maintained outside of the standard library at |
| 78 | http://www.jcea.es/programacion/pybsddb.htm. |
Benjamin Peterson | 6ba2332 | 2008-09-03 22:59:38 +0000 | [diff] [blame] | 79 | |
Facundo Batista | c469d4c | 2008-09-03 22:49:01 +0000 | [diff] [blame] | 80 | - Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module |
| 81 | to the urlparse one. Added a DeprecationWarning in the old module, it |
| 82 | will be deprecated in the future. |
| 83 | |
Marc-André Lemburg | 7b2b1f9 | 2008-09-02 12:10:46 +0000 | [diff] [blame] | 84 | - Issue #3719: platform.architecture() fails if there are spaces in the |
| 85 | path to the Python binary. |
| 86 | |
Brett Cannon | ec92e18 | 2008-09-02 02:46:59 +0000 | [diff] [blame] | 87 | - Issue 3602: As part of the merge of r66135, make the parameters on |
| 88 | warnings.catch_warnings() keyword-only. Also remove a DeprecationWarning. |
| 89 | |
Benjamin Peterson | b3085c9 | 2008-09-01 23:09:31 +0000 | [diff] [blame] | 90 | - The deprecation warnings for the camelCase threading API names were removed. |
| 91 | |
Jesse Noller | 338f578 | 2008-09-03 18:22:19 +0000 | [diff] [blame] | 92 | - Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing |
| 93 | SEM_VALUE_MAX. |
| 94 | |
Benjamin Peterson | 6784eb7 | 2008-08-23 20:32:27 +0000 | [diff] [blame] | 95 | Extension Modules |
| 96 | ----------------- |
| 97 | |
Amaury Forgeot d'Arc | d8976f1 | 2008-09-02 23:22:56 +0000 | [diff] [blame] | 98 | - Issue #2975: When compiling several extension modules with Visual Studio 2008 |
| 99 | from the same python interpreter, some environment variables would grow |
| 100 | without limit. |
| 101 | |
Benjamin Peterson | 6784eb7 | 2008-08-23 20:32:27 +0000 | [diff] [blame] | 102 | - Issue #3643: Added a few more checks to _testcapi to prevent segfaults by |
| 103 | exploitation of poor argument checking. |
| 104 | |
Jesus Cea | 6ba3329 | 2008-08-31 14:12:11 +0000 | [diff] [blame] | 105 | - bsddb code updated to version 4.7.3pre2. This code is the same than |
| 106 | Python 2.6 one, since the intention is to keep an unified 2.x/3.x codebase. |
| 107 | The Python code is automatically translated using "2to3". Please, do not |
| 108 | update this code in Python 3.0 by hand. Update the 2.6 one and then |
| 109 | do "2to3". |
| 110 | |
Neal Norwitz | 8f2f22a | 2008-08-24 20:59:23 +0000 | [diff] [blame] | 111 | Tools/Demos |
| 112 | ----------- |
| 113 | |
| 114 | - Fix Misc/gdbinit so it works. |
| 115 | |
Barry Warsaw | 8509df7 | 2008-08-21 03:02:47 +0000 | [diff] [blame] | 116 | |
Antoine Pitrou | 6e1df8d | 2008-07-25 19:58:18 +0000 | [diff] [blame] | 117 | What's new in Python 3.0b3? |
| 118 | =========================== |
| 119 | |
Barry Warsaw | 57c1058 | 2008-08-21 02:39:51 +0000 | [diff] [blame] | 120 | *Release date: 20-Aug-2008* |
Antoine Pitrou | 6e1df8d | 2008-07-25 19:58:18 +0000 | [diff] [blame] | 121 | |
Antoine Pitrou | 9a2310d | 2008-07-25 22:39:39 +0000 | [diff] [blame] | 122 | Core and Builtins |
| 123 | ----------------- |
| 124 | |
Benjamin Peterson | bc74e5b | 2008-08-23 20:19:17 +0000 | [diff] [blame] | 125 | - Issue #3653: Fix a segfault when sys.excepthook was called with invalid |
| 126 | arguments. |
| 127 | |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 128 | - Issue #2394: implement more of the memoryview API, with the caveat that |
| 129 | only one-dimensional contiguous buffers are supported and exercised right |
| 130 | now. Slicing, slice assignment and comparison (equality and inequality) |
| 131 | have been added. Also, the tolist() method has been implemented, but only |
| 132 | for byte buffers. Endly, the API has been updated to return bytes objects |
| 133 | wherever it used to return bytearrays. |
| 134 | |
Antoine Pitrou | ee58fa4 | 2008-08-19 18:22:14 +0000 | [diff] [blame] | 135 | - Issue #3560: clean up the new C PyMemoryView API so that naming is |
| 136 | internally consistent; add macros PyMemoryView_GET_BASE() and |
| 137 | PyMemoryView_GET_BUFFER() to access useful properties of a memory views |
| 138 | without relying on a particular implementation; remove the ill-named |
| 139 | PyMemoryView() function (PyMemoryView_GET_BUFFER() can be used instead). |
| 140 | |
Thomas Heller | f5049fc | 2008-08-19 19:49:49 +0000 | [diff] [blame] | 141 | - ctypes function pointers that are COM methods have a boolean True |
| 142 | value again. |
| 143 | |
Antoine Pitrou | 9a2310d | 2008-07-25 22:39:39 +0000 | [diff] [blame] | 144 | - Issue #1819: function calls with several named parameters are now on |
| 145 | average 35% faster (as measured by pybench). |
| 146 | |
Marc-André Lemburg | 4cc0f24 | 2008-08-07 18:54:33 +0000 | [diff] [blame] | 147 | - The undocumented C APIs PyUnicode_AsString() and |
| 148 | PyUnicode_AsStringAndSize() were made private to the interpreter, in |
| 149 | order to be able to refine their interfaces for Python 3.1. |
| 150 | |
| 151 | If you need to access the UTF-8 representation of a Unicode object |
| 152 | as bytes string, please use PyUnicode_AsUTF8String() instead. |
| 153 | |
Antoine Pitrou | af14b79 | 2008-08-07 21:50:41 +0000 | [diff] [blame] | 154 | - Issue #3460: PyUnicode_Join() implementation is 10% to 80% faster thanks |
| 155 | to Python 3.0's stricter semantics which allow to avoid successive |
| 156 | reallocations of the result string (this also affects str.join()). |
| 157 | |
Marc-André Lemburg | 4cc0f24 | 2008-08-07 18:54:33 +0000 | [diff] [blame] | 158 | |
Antoine Pitrou | 6e1df8d | 2008-07-25 19:58:18 +0000 | [diff] [blame] | 159 | Library |
| 160 | ------- |
| 161 | |
Hye-Shik Chang | 50d1f79 | 2008-08-23 08:03:03 +0000 | [diff] [blame] | 162 | - Issue #1276: Added temporary aliases for CJK Mac encodings to resolve |
| 163 | a build problem on MacOS with CJK locales. It adds four temporary |
| 164 | mappings to existing legacy codecs that are virtually compatible |
| 165 | with Mac encodings. They will be replaced by codecs correctly |
| 166 | implemented in 3.1. |
| 167 | |
Amaury Forgeot d'Arc | 41e3667 | 2008-08-20 21:35:50 +0000 | [diff] [blame] | 168 | - Issue #3614: Corrected a typo in xmlrpc.client, leading to a NameError |
| 169 | "global name 'header' is not defined". |
| 170 | |
Antoine Pitrou | fd03645 | 2008-08-19 17:56:33 +0000 | [diff] [blame] | 171 | - Issue #2834: update the regular expression library to match the unicode |
| 172 | standards of py3k. In other words, mixing bytes and unicode strings |
| 173 | (be it as pattern, search string or replacement string) raises a TypeError. |
| 174 | Moreover, the re.UNICODE flag is enabled automatically for unicode patterns, |
| 175 | and can be disabled by specifying a new re.ASCII flag; as for bytes |
| 176 | patterns, ASCII matching is the only option and trying to specify re.UNICODE |
| 177 | for such patterns raises a ValueError. |
| 178 | |
Guido van Rossum | 52dbbb9 | 2008-08-18 21:44:30 +0000 | [diff] [blame] | 179 | - Issue #3300: make urllib.parse.[un]quote() default to UTF-8. |
| 180 | Code contributed by Matt Giuca. quote() now encodes the input |
| 181 | before quoting, unquote() decodes after unquoting. There are |
| 182 | new arguments to change the encoding and errors settings. |
| 183 | There are also new APIs to skip the encode/decode steps. |
| 184 | [un]quote_plus() are also affected. |
| 185 | |
Nick Coghlan | 36f4952 | 2008-08-18 12:31:52 +0000 | [diff] [blame] | 186 | - Issue #2235: numbers.Number now blocks inheritance of the default id() |
| 187 | based hash because that hash mechanism is not correct for numeric types. |
| 188 | All concrete numeric types that inherit from Number (rather than just |
| 189 | registering with it) must explicitly provide a hash implementation in |
| 190 | order for their instances to be hashable. |
| 191 | |
Benjamin Peterson | 4cd6a95 | 2008-08-17 20:23:46 +0000 | [diff] [blame] | 192 | - Issue #2676: in the email package, content-type parsing was hanging on |
| 193 | pathological input because of quadratic or exponential behaviour of a |
| 194 | regular expression. |
| 195 | |
Antoine Pitrou | 8769576 | 2008-08-14 22:44:29 +0000 | [diff] [blame] | 196 | - Issue #3476: binary buffered reading through the new "io" library is now |
| 197 | thread-safe. |
| 198 | |
Robert Schuppenies | 3d1c7de | 2008-08-10 11:28:17 +0000 | [diff] [blame] | 199 | - Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to |
| 200 | menu entries were not deleted. |
| 201 | |
Lars Gustäbel | 0c24e8b | 2008-08-02 11:43:24 +0000 | [diff] [blame] | 202 | - Remove the TarFileCompat class from tarfile.py. |
| 203 | |
Amaury Forgeot d'Arc | bdbddf8 | 2008-08-01 00:06:49 +0000 | [diff] [blame] | 204 | - Issue #2491: os.fdopen is now almost an alias for the built-in open(), and |
| 205 | accepts the same parameters. It just checks that its first argument is an |
| 206 | integer. |
| 207 | |
Antoine Pitrou | 6e1df8d | 2008-07-25 19:58:18 +0000 | [diff] [blame] | 208 | - Issue #3394: zipfile.writestr sets external attributes when passed a |
| 209 | file name rather than a ZipInfo instance, so files are extracted with |
| 210 | mode 0600 rather than 000 under Unix. |
| 211 | |
Antoine Pitrou | c66f909 | 2008-07-28 19:46:11 +0000 | [diff] [blame] | 212 | - Issue #2523: Fix quadratic behaviour when read()ing a binary file without |
| 213 | asking for a specific length. |
Antoine Pitrou | 6e1df8d | 2008-07-25 19:58:18 +0000 | [diff] [blame] | 214 | |
Martin v. Löwis | 371bb50 | 2008-08-16 13:02:57 +0000 | [diff] [blame] | 215 | Extension Modules |
| 216 | ----------------- |
| 217 | |
| 218 | - Bug #3542: Support Unicode strings in _msi module. |
| 219 | |
Amaury Forgeot d'Arc | 9196dc6 | 2008-06-19 20:54:32 +0000 | [diff] [blame] | 220 | What's new in Python 3.0b2? |
| 221 | =========================== |
| 222 | |
Barry Warsaw | 4bd1cef | 2008-07-18 02:28:44 +0000 | [diff] [blame] | 223 | *Release date: 17-Jul-2008* |
Amaury Forgeot d'Arc | 9196dc6 | 2008-06-19 20:54:32 +0000 | [diff] [blame] | 224 | |
| 225 | Core and Builtins |
| 226 | ----------------- |
| 227 | |
Mark Dickinson | 65fe25e | 2008-07-16 11:30:51 +0000 | [diff] [blame] | 228 | - Issue #3008: the float type has a new instance method 'float.hex' |
| 229 | and a new class method 'float.fromhex' to convert floating-point |
| 230 | numbers to and from hexadecimal strings, respectively. |
| 231 | |
Eric Smith | d68af8f | 2008-07-16 00:15:35 +0000 | [diff] [blame] | 232 | - Issue #3083: Add alternate (#) formatting for bin, oct, hex output |
| 233 | for str.format(). This adds the prefix 0b, 0o, or 0x, respectively. |
| 234 | |
Amaury Forgeot d'Arc | a4db686 | 2008-07-04 21:26:43 +0000 | [diff] [blame] | 235 | - Issue #3280: like chr(), the "%c" format now accepts unicode code points |
| 236 | beyond the Basic Multilingual Plane (above 0xffff) on all configurations. On |
| 237 | "narrow Unicode" builds, the result is a string of 2 code units, forming a |
| 238 | UTF-16 surrogate pair. |
| 239 | |
Georg Brandl | d52429f | 2008-07-04 15:55:02 +0000 | [diff] [blame] | 240 | - Issue #3282: str.isprintable() should return False for undefined |
| 241 | Unicode characters. |
| 242 | |
Martin v. Löwis | 029656f | 2008-06-30 04:06:08 +0000 | [diff] [blame] | 243 | - Issue #3236: Return small longs from PyLong_FromString. |
| 244 | |
Benjamin Peterson | e652821 | 2008-07-15 15:32:09 +0000 | [diff] [blame] | 245 | - Exception tracebacks now support exception chaining. |
| 246 | |
Amaury Forgeot d'Arc | 9196dc6 | 2008-06-19 20:54:32 +0000 | [diff] [blame] | 247 | Library |
| 248 | ------- |
| 249 | |
Brett Cannon | c2542e9 | 2008-07-25 18:19:20 +0000 | [diff] [blame] | 250 | - Removed the sunaudio module. Use sunau instead. |
| 251 | |
Thomas Heller | 47bc809 | 2008-08-19 06:38:12 +0000 | [diff] [blame] | 252 | - Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python |
| 253 | api functions without holding the GIL, which could lead to a fatal |
| 254 | error when they failed. |
| 255 | |
| 256 | - Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects. |
| 257 | |
Georg Brandl | 30704ea0 | 2008-07-23 15:07:12 +0000 | [diff] [blame] | 258 | - Removed "ast" function aliases from the parser module. |
| 259 | |
Thomas Heller | 15383a0 | 2008-07-15 19:46:52 +0000 | [diff] [blame] | 260 | - Issue #3313: Fixed a crash when a failed dlopen() call does not set |
| 261 | a valid dlerror() message. |
| 262 | |
Thomas Heller | 0261e1e | 2008-07-15 17:25:07 +0000 | [diff] [blame] | 263 | - Issue #3258: Fixed a crash when a ctypes POINTER type to an |
| 264 | incomplete structure was created. |
| 265 | |
Georg Brandl | 1abcbf8 | 2008-07-01 19:28:43 +0000 | [diff] [blame] | 266 | - Issue #2683: Fix inconsistency in subprocess.Popen.communicate(): the |
| 267 | argument now must be a bytes object in any case. |
| 268 | |
Amaury Forgeot d'Arc | 9196dc6 | 2008-06-19 20:54:32 +0000 | [diff] [blame] | 269 | - Issue #3145: help("modules whatever") failed when trying to load the source |
| 270 | code of every single module of the standard library, including invalid files |
| 271 | used in the test suite. |
| 272 | |
Georg Brandl | bded4d3 | 2008-07-17 18:15:35 +0000 | [diff] [blame] | 273 | - The gettext library now consistently uses Unicode strings for message ids |
| 274 | and message strings, and ``ugettext()`` and the like don't exist anymore. |
Benjamin Peterson | 801844d | 2008-07-14 14:32:15 +0000 | [diff] [blame] | 275 | |
Benjamin Peterson | e652821 | 2008-07-15 15:32:09 +0000 | [diff] [blame] | 276 | - The traceback module has been expanded to handle chained exceptions. |
| 277 | |
Amaury Forgeot d'Arc | 612f61f | 2008-07-02 23:02:21 +0000 | [diff] [blame] | 278 | C API |
| 279 | ----- |
| 280 | |
| 281 | - Issue #3247: the function Py_FindMethod was removed. Modern types should |
| 282 | use the tp_methods slot instead. |
| 283 | |
Benjamin Peterson | de9c869 | 2008-07-01 18:23:09 +0000 | [diff] [blame] | 284 | Tools/Demos |
| 285 | ----------- |
| 286 | |
Georg Brandl | 336341f | 2008-07-01 20:21:28 +0000 | [diff] [blame] | 287 | - The Mac/Demos directory has been removed. |
Benjamin Peterson | de9c869 | 2008-07-01 18:23:09 +0000 | [diff] [blame] | 288 | |
Georg Brandl | 336341f | 2008-07-01 20:21:28 +0000 | [diff] [blame] | 289 | - All of the Mac scripts have been removed (including BuildApplet.py). |
Benjamin Peterson | de9c869 | 2008-07-01 18:23:09 +0000 | [diff] [blame] | 290 | |
| 291 | |
Brett Cannon | 0d71ee7 | 2008-05-08 18:13:40 +0000 | [diff] [blame] | 292 | What's new in Python 3.0b1? |
| 293 | =========================== |
| 294 | |
Barry Warsaw | c1e689e | 2008-06-19 00:35:43 +0000 | [diff] [blame] | 295 | *Release date: 18-Jun-2008* |
Brett Cannon | 0d71ee7 | 2008-05-08 18:13:40 +0000 | [diff] [blame] | 296 | |
| 297 | Core and Builtins |
| 298 | ----------------- |
| 299 | |
Brett Cannon | db73491 | 2008-06-27 00:52:15 +0000 | [diff] [blame] | 300 | - Issue #3211: warnings.warn_explicit() did not guard against its 'registry' |
| 301 | argument being anything other than a dict or None. Also fixed a bug in error |
| 302 | handling when 'message' and 'category' were both set to None, triggering a |
| 303 | bus error. |
| 304 | |
Amaury Forgeot d'Arc | c856c7a | 2008-06-16 19:50:09 +0000 | [diff] [blame] | 305 | - Issue #3100: Corrected a crash on deallocation of a subclassed weakref which |
| 306 | holds the last (strong) reference to its referent. |
| 307 | |
Georg Brandl | 559e5d7 | 2008-06-11 18:37:52 +0000 | [diff] [blame] | 308 | - Issue #2630: implement PEP 3138. repr() now returns printable |
| 309 | Unicode characters unescaped, to get an ASCII-only representation |
| 310 | of an object use ascii(). |
| 311 | |
Amaury Forgeot d'Arc | f1ca0b1 | 2008-06-11 17:40:47 +0000 | [diff] [blame] | 312 | - Issue #1342: On windows, Python could not start when installed in a |
| 313 | directory with non-ascii characters. |
| 314 | |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 315 | - Implement PEP 3121: new module initialization and finalization API. |
| 316 | |
Georg Brandl | e1b5ac6 | 2008-06-04 13:06:58 +0000 | [diff] [blame] | 317 | - Removed the already-defunct ``-t`` option. |
| 318 | |
Amaury Forgeot d'Arc | 74c71f5 | 2008-05-26 21:41:42 +0000 | [diff] [blame] | 319 | - Issue #2957: Corrected a ValueError "recursion limit exceeded", when |
| 320 | unmarshalling many code objects, which happens when importing a |
| 321 | large .pyc file (~1000 functions). |
| 322 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 323 | - Issue #2963: fix merging oversight that disabled method cache for |
| 324 | all types. |
Georg Brandl | 1bcf35a | 2008-05-25 09:32:09 +0000 | [diff] [blame] | 325 | |
Georg Brandl | c9b0953 | 2008-05-25 09:24:38 +0000 | [diff] [blame] | 326 | - Issue #2964: fix a missing INCREF in instancemethod_descr_get. |
| 327 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 328 | - Issue #2895: Don't crash when given bytes objects as keyword names. |
Georg Brandl | d8b690f | 2008-05-16 17:28:50 +0000 | [diff] [blame] | 329 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 330 | - Issue #2798: When parsing arguments with PyArg_ParseTuple, the "s" |
| 331 | code now allows any unicode string and returns a utf-8 encoded |
| 332 | buffer, just like the "s#" code already does. The "z" code was |
| 333 | corrected as well. |
Amaury Forgeot d'Arc | 0740459 | 2008-05-12 13:19:07 +0000 | [diff] [blame] | 334 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 335 | - Issue #2863: generators now have a ``gen.__name__`` attribute that |
| 336 | equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals |
| 337 | ``func.func_code.co_name``. The repr() of a generator now also |
| 338 | contains this name. |
Alexandre Vassalotti | e9f305f | 2008-05-16 04:39:54 +0000 | [diff] [blame] | 339 | |
| 340 | - Issue #2831: enumerate() now has a ``start`` argument. |
| 341 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 342 | - Issue #2801: fix bug in the float.is_integer method where a |
| 343 | ValueError was sometimes incorrectly raised. |
Mark Dickinson | c4352b0 | 2008-05-09 13:55:01 +0000 | [diff] [blame] | 344 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 345 | - The ``--with-toolbox-glue`` option (and the associated |
| 346 | pymactoolbox.h) have been removed. |
Benjamin Peterson | 79629ab | 2008-05-14 21:07:12 +0000 | [diff] [blame] | 347 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 348 | - Issue #2196: hasattr() now lets exceptions which do not inherit |
| 349 | Exception (KeyboardInterrupt, and SystemExit) propagate instead of |
| 350 | ignoring them. |
Alexandre Vassalotti | eca20b6 | 2008-05-16 02:54:33 +0000 | [diff] [blame] | 351 | |
Benjamin Peterson | eec3d71 | 2008-06-11 15:59:43 +0000 | [diff] [blame] | 352 | - #3021 Exception reraising sematics have been significantly improved. However, |
| 353 | f_exc_type, f_exc_value, and f_exc_traceback cannot be accessed from Python |
| 354 | code anymore. |
| 355 | |
Benjamin Peterson | 4f92ca4 | 2008-06-11 20:21:57 +0000 | [diff] [blame] | 356 | - Three of PyNumberMethods' members, nb_coerce, nb_hex, and nb_oct, have been |
| 357 | removed. |
| 358 | |
Brett Cannon | 0d71ee7 | 2008-05-08 18:13:40 +0000 | [diff] [blame] | 359 | Extension Modules |
| 360 | ----------------- |
| 361 | |
Georg Brandl | 38feaf0 | 2008-05-25 07:45:51 +0000 | [diff] [blame] | 362 | - Renamed ``_winreg`` module to ``winreg``. |
| 363 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 364 | - Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the |
| 365 | platform. |
Alexandre Vassalotti | bee3253 | 2008-05-16 18:15:12 +0000 | [diff] [blame] | 366 | |
| 367 | - Support for Windows 9x has been removed from the winsound module. |
| 368 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 369 | - Issue #2870: cmathmodule.c compile error. |
Alexandre Vassalotti | eca20b6 | 2008-05-16 02:54:33 +0000 | [diff] [blame] | 370 | |
Brett Cannon | 0d71ee7 | 2008-05-08 18:13:40 +0000 | [diff] [blame] | 371 | Library |
| 372 | ------- |
| 373 | |
Benjamin Peterson | 87069fd | 2008-08-20 02:00:14 +0000 | [diff] [blame] | 374 | - The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of |
| 375 | symtable.Symbol have been removed. |
| 376 | |
Amaury Forgeot d'Arc | cb0d2d7 | 2008-06-18 22:19:22 +0000 | [diff] [blame] | 377 | - Patch #3133: http.server.CGIHTTPRequestHandler did not work on windows. |
| 378 | |
Jeremy Hylton | 1afc169 | 2008-06-18 20:49:58 +0000 | [diff] [blame] | 379 | - a new ``urllib`` package was created. It consists of code from |
| 380 | ``urllib``, ``urllib2``, ``urlparse``, and ``robotparser``. The old |
| 381 | modules have all been removed. The new package has five submodules: |
| 382 | ``urllib.parse``, ``urllib.request``, ``urllib.response``, |
| 383 | ``urllib.error``, and ``urllib.robotparser``. The |
| 384 | ``urllib.request.urlopen()`` function uses the url opener from |
| 385 | ``urllib2``. (Note that the unittests have not been renamed for the |
| 386 | beta, but they will be renamed in the future.) |
| 387 | |
Benjamin Peterson | a0c0a4a | 2008-06-12 22:15:50 +0000 | [diff] [blame] | 388 | - rfc822 has been removed in favor of the email package. |
| 389 | |
Benjamin Peterson | 425ea7f | 2008-06-12 14:11:35 +0000 | [diff] [blame] | 390 | - mimetools has been removed in favor of the email package. |
Benjamin Peterson | 23c51a2 | 2008-06-12 14:06:57 +0000 | [diff] [blame] | 391 | |
Barry Warsaw | f501942 | 2008-06-12 02:42:00 +0000 | [diff] [blame] | 392 | - Patch #2849: Remove use of rfc822 module from standard library. |
| 393 | |
Alexandre Vassalotti | 794652d | 2008-06-11 22:58:36 +0000 | [diff] [blame] | 394 | - Added C optimized implementation of io.StringIO. |
| 395 | |
Alexandre Vassalotti | ca2d610 | 2008-06-12 18:26:05 +0000 | [diff] [blame] | 396 | - The ``pickle`` module is now automatically use an optimized C |
| 397 | implementation of Pickler and Unpickler when available. The |
| 398 | ``cPickle`` module is no longer needed. |
| 399 | |
Georg Brandl | 877b10a | 2008-06-01 21:25:55 +0000 | [diff] [blame] | 400 | - Removed the ``htmllib`` and ``sgmllib`` modules. |
| 401 | |
Georg Brandl | 6101395 | 2008-05-28 15:56:30 +0000 | [diff] [blame] | 402 | - The deprecated ``SmartCookie`` and ``SimpleCookie`` classes have |
| 403 | been removed from ``http.cookies``. |
| 404 | |
Brett Cannon | a23810f | 2008-05-26 19:04:21 +0000 | [diff] [blame] | 405 | - The ``commands`` module has been removed. Its getoutput() and |
| 406 | getstatusoutput() functions have been moved to the ``subprocess`` module. |
| 407 | |
Georg Brandl | 3d5c425 | 2008-05-26 18:03:26 +0000 | [diff] [blame] | 408 | - The ``http`` package was created; it contains the old ``httplib`` |
| 409 | as ``http.client``, ``Cookie`` as ``http.cookies``, ``cookielib`` |
| 410 | as ``http.cookiejar``, and the content of the three ``HTTPServer`` |
| 411 | modules as ``http.server``. |
| 412 | |
Georg Brandl | 38eceaa | 2008-05-26 11:14:17 +0000 | [diff] [blame] | 413 | - The ``xmlrpc`` package was created; it contains the old |
| 414 | ``xmlrpclib`` module as ``xmlrpc.client`` and the content of |
| 415 | the old ``SimpleXMLRPCServer`` and ``DocXMLRPCServer`` modules |
Antoine Pitrou | 6e1df8d | 2008-07-25 19:58:18 +0000 | [diff] [blame] | 416 | as ``xmlrpc.server``. |
Georg Brandl | 38eceaa | 2008-05-26 11:14:17 +0000 | [diff] [blame] | 417 | |
| 418 | - The ``dbm`` package was created, containing the old modules |
| 419 | ``anydbm`` and ``whichdb`` in its ``__init__.py``, and having |
| 420 | ``dbm.gnu`` (was ``gdbm``), ``dbm.bsd`` (was ``dbhash``), |
| 421 | ``dbm.ndbm`` (was ``dbm``) and ``dbm.dumb`` (was ``dumbdbm``) |
| 422 | as submodules. |
| 423 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 424 | - The ``repr`` module has been renamed to ``reprlib``. |
Alexandre Vassalotti | 1f2ba4b | 2008-05-16 07:12:44 +0000 | [diff] [blame] | 425 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 426 | - The ``statvfs`` module has been removed. |
Brett Cannon | acbb786 | 2008-05-16 00:42:57 +0000 | [diff] [blame] | 427 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 428 | - Issue #1713041: fix pprint's handling of maximum depth. |
Alexandre Vassalotti | eca20b6 | 2008-05-16 02:54:33 +0000 | [diff] [blame] | 429 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 430 | - Issue #2250: Exceptions raised during evaluation of names in |
| 431 | rlcompleter's ``Completer.complete()`` method are now caught and |
| 432 | ignored. |
Alexandre Vassalotti | 8ae3e05 | 2008-05-16 00:41:41 +0000 | [diff] [blame] | 433 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 434 | - Patch #2659: Added ``break_on_hyphens`` option to textwrap's |
| 435 | ``TextWrapper`` class. |
Alexandre Vassalotti | 1d1eaa4 | 2008-05-14 22:59:42 +0000 | [diff] [blame] | 436 | |
Alexandre Vassalotti | 6461e10 | 2008-05-15 22:09:29 +0000 | [diff] [blame] | 437 | - Issue #2487: change the semantics of math.ldexp(x, n) when n is too |
| 438 | large to fit in a C long. ldexp(x, n) now returns a zero (with |
| 439 | suitable sign) if n is large and negative; previously, it raised |
| 440 | OverflowError. |
| 441 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 442 | - The ``ConfigParser`` module has been renamed to ``configparser``. |
Alexandre Vassalotti | 5f8ced2 | 2008-05-16 00:03:33 +0000 | [diff] [blame] | 443 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 444 | - Issue #2865: webbrowser.open() works again in a KDE environment. |
Amaury Forgeot d'Arc | 2b2b44d | 2008-05-12 14:41:00 +0000 | [diff] [blame] | 445 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 446 | - The ``multifile`` module has been removed. |
Brett Cannon | d3343cb | 2008-05-12 03:18:21 +0000 | [diff] [blame] | 447 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 448 | - The ``SocketServer`` module has been renamed to ``socketserver``. |
Alexandre Vassalotti | ce26195 | 2008-05-12 02:31:37 +0000 | [diff] [blame] | 449 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 450 | - Fixed the ``__all__`` setting on ``collections`` to include |
| 451 | ``UserList`` and ``UserString``. |
Brett Cannon | 23a4a7b | 2008-05-12 00:56:28 +0000 | [diff] [blame] | 452 | |
Brett Cannon | cf3520c | 2008-05-11 22:47:58 +0000 | [diff] [blame] | 453 | - The sre module has been removed. |
| 454 | |
Alexandre Vassalotti | f260e44 | 2008-05-11 19:59:59 +0000 | [diff] [blame] | 455 | - The Queue module has been renamed to queue. |
| 456 | |
Alexandre Vassalotti | f7fa63d | 2008-05-11 08:55:36 +0000 | [diff] [blame] | 457 | - The copy_reg module has been renamed to copyreg. |
| 458 | |
Brett Cannon | d8b61ee | 2008-05-11 03:00:26 +0000 | [diff] [blame] | 459 | - The mhlib module has been removed. |
| 460 | |
Brett Cannon | bd47442 | 2008-05-10 22:42:14 +0000 | [diff] [blame] | 461 | - The ihooks module has been removed. |
| 462 | |
Brett Cannon | b59a2bd | 2008-05-10 22:03:16 +0000 | [diff] [blame] | 463 | - The fpformat module has been removed. |
| 464 | |
Brett Cannon | f4fd993 | 2008-05-10 21:11:46 +0000 | [diff] [blame] | 465 | - The dircache module has been removed. |
| 466 | |
Brett Cannon | d175b4c | 2008-05-10 03:19:54 +0000 | [diff] [blame] | 467 | - The Canvas module has been removed. |
| 468 | |
Mark Dickinson | b27406c | 2008-05-09 13:42:33 +0000 | [diff] [blame] | 469 | - The Decimal module gained the magic methods __round__, __ceil__, |
| 470 | __floor__ and __trunc__, to give support for round, math.ceil, |
| 471 | math.floor and math.trunc. |
| 472 | |
Brett Cannon | 900ee3a | 2008-05-08 20:31:11 +0000 | [diff] [blame] | 473 | - The user module has been removed. |
| 474 | |
Brett Cannon | 34afe87 | 2008-05-08 20:31:44 +0000 | [diff] [blame] | 475 | - The mutex module has been removed. |
| 476 | |
Brett Cannon | 0d71ee7 | 2008-05-08 18:13:40 +0000 | [diff] [blame] | 477 | - The imputil module has been removed. |
| 478 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 479 | - os.path.walk has been removed in favor of os.walk. |
Benjamin Peterson | d71ca41 | 2008-05-08 23:44:58 +0000 | [diff] [blame] | 480 | |
Alexandre Vassalotti | 5f8ced2 | 2008-05-16 00:03:33 +0000 | [diff] [blame] | 481 | - pdb gained the "until" command. |
| 482 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 483 | - The test.test_support module has been renamed to test.support. |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 484 | |
Georg Brandl | 32de7af | 2008-08-18 23:07:41 +0000 | [diff] [blame] | 485 | - The threading module API was renamed to be PEP 8 compliant. The |
| 486 | old names are still present, but will be removed in the near future. |
Benjamin Peterson | 672b803 | 2008-06-11 19:14:14 +0000 | [diff] [blame] | 487 | |
Georg Brandl | 294d5a9 | 2008-06-01 19:25:32 +0000 | [diff] [blame] | 488 | Tools/Demos |
| 489 | ----------- |
| 490 | |
| 491 | - The bgen tool has been removed. |
Benjamin Peterson | 630c829 | 2008-06-01 18:50:38 +0000 | [diff] [blame] | 492 | |
Brett Cannon | 0d71ee7 | 2008-05-08 18:13:40 +0000 | [diff] [blame] | 493 | Build |
| 494 | ----- |
| 495 | |
| 496 | |
Barry Warsaw | 66079cd | 2008-04-04 01:36:36 +0000 | [diff] [blame] | 497 | What's New in Python 3.0a5? |
| 498 | =========================== |
| 499 | |
Barry Warsaw | 9eab8b0 | 2008-05-08 13:05:38 +0000 | [diff] [blame] | 500 | *Release date: 08-May-2008* |
Barry Warsaw | 66079cd | 2008-04-04 01:36:36 +0000 | [diff] [blame] | 501 | |
| 502 | Core and Builtins |
| 503 | ----------------- |
| 504 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 505 | - Fixed misbehaviour of PyLong_FromSsize_t on systems where |
| 506 | sizeof(size_t) > sizeof(long). |
Mark Dickinson | 7ab6be2 | 2008-04-15 21:42:42 +0000 | [diff] [blame] | 507 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 508 | - Issue #2221: Corrected a SystemError "error return without exception |
| 509 | set", when the code executed by exec() raises an exception, and |
| 510 | sys.stdout.flush() also raises an error. |
Amaury Forgeot d'Arc | 7fedbe5 | 2008-04-10 21:03:09 +0000 | [diff] [blame] | 511 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 512 | - Bug #2565: The repr() of type objects now calls them 'class', not |
| 513 | 'type' - whether they are builtin types or not. |
Martin v. Löwis | 250ad61 | 2008-04-07 05:43:42 +0000 | [diff] [blame] | 514 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 515 | - The command line processing was converted to pass Unicode strings |
| 516 | through as unmodified as possible; as a consequence, the C API |
| 517 | related to command line arguments was changed to use wchar_t. |
| 518 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 519 | - All backslashes in raw strings are interpreted literally. This |
| 520 | means that '\u' and '\U' escapes are not treated specially. |
Benjamin Peterson | a2f837f | 2008-04-28 21:05:10 +0000 | [diff] [blame] | 521 | |
Barry Warsaw | 66079cd | 2008-04-04 01:36:36 +0000 | [diff] [blame] | 522 | Extension Modules |
| 523 | ----------------- |
| 524 | |
| 525 | Library |
| 526 | ------- |
| 527 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 528 | - ctypes objects now support the PEP3118 buffer interface. |
Thomas Heller | b041fda | 2008-04-30 17:11:46 +0000 | [diff] [blame] | 529 | |
Thomas Heller | e106dc3 | 2008-04-24 18:39:36 +0000 | [diff] [blame] | 530 | - Issue #2682: ctypes callback functions now longer contain a cyclic |
| 531 | reference to themselves. |
| 532 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 533 | - Issue #2058: Remove the buf attribute and add __slots__ to the |
| 534 | TarInfo class in order to reduce tarfile's memory usage. |
Lars Gustäbel | c2ea8c6 | 2008-04-14 10:05:48 +0000 | [diff] [blame] | 535 | |
Martin v. Löwis | 8efc62c | 2008-04-10 19:02:25 +0000 | [diff] [blame] | 536 | - Bug #2606: Avoid calling .sort() on a dict_keys object. |
| 537 | |
Thomas Heller | bff533b | 2008-04-04 19:53:14 +0000 | [diff] [blame] | 538 | - The bundled libffi copy is now in sync with the recently released |
| 539 | libffi3.0.5 version, apart from some small changes to |
| 540 | Modules/_ctypes/libffi/configure.ac. |
| 541 | |
Thomas Heller | f44b9a1 | 2008-04-04 10:18:23 +0000 | [diff] [blame] | 542 | Build |
| 543 | ----- |
| 544 | |
Mark Dickinson | b0e2b4c | 2008-04-26 20:48:56 +0000 | [diff] [blame] | 545 | - Issue #1496032: On alpha, use -mieee when gcc is the compiler. |
| 546 | |
Guido van Rossum | dc21db3 | 2008-04-07 18:37:41 +0000 | [diff] [blame] | 547 | - "make install" is now an alias for "make altinstall", to prevent |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 548 | accidentally overwriting a Python 2.x installation. Use "make |
| 549 | fullinstall" to force Python 3.0 to be installed as "python". |
Guido van Rossum | dc21db3 | 2008-04-07 18:37:41 +0000 | [diff] [blame] | 550 | |
Thomas Heller | f44b9a1 | 2008-04-04 10:18:23 +0000 | [diff] [blame] | 551 | - Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when |
| 552 | gcc is used as compiler. |
Barry Warsaw | 66079cd | 2008-04-04 01:36:36 +0000 | [diff] [blame] | 553 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 554 | |
Barry Warsaw | a9d499d | 2008-03-01 18:38:07 +0000 | [diff] [blame] | 555 | What's New in Python 3.0a4? |
| 556 | =========================== |
| 557 | |
Barry Warsaw | bb5cd08 | 2008-04-02 23:33:27 +0000 | [diff] [blame] | 558 | *Release date: 02-Apr-2008* |
Barry Warsaw | a9d499d | 2008-03-01 18:38:07 +0000 | [diff] [blame] | 559 | |
Martin v. Löwis | 2593146 | 2008-03-17 20:43:42 +0000 | [diff] [blame] | 560 | Core and Builtins |
| 561 | ----------------- |
| 562 | |
| 563 | - Bug #2301: Don't try decoding the source code into the original |
| 564 | encoding for syntax errors. |
| 565 | |
Martin v. Löwis | 92fab75 | 2008-03-08 10:40:41 +0000 | [diff] [blame] | 566 | Extension Modules |
| 567 | ----------------- |
| 568 | |
Neal Norwitz | 6cf49cf | 2008-03-24 06:22:57 +0000 | [diff] [blame] | 569 | - The dl module was removed, use the ctypes module instead. |
| 570 | |
Martin v. Löwis | 92fab75 | 2008-03-08 10:40:41 +0000 | [diff] [blame] | 571 | - Use wchar_t functions in _locale module. |
Barry Warsaw | a9d499d | 2008-03-01 18:38:07 +0000 | [diff] [blame] | 572 | |
Martin v. Löwis | 071ef77 | 2008-03-08 11:24:24 +0000 | [diff] [blame] | 573 | Library |
| 574 | ------- |
| 575 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 576 | - The class distutils.commands.build_py.build_py_2to3 can be used as a |
| 577 | build_py replacement to automatically run 2to3 on modules that are |
| 578 | going to be installed. |
Martin v. Löwis | 73a22f0 | 2008-03-22 00:35:10 +0000 | [diff] [blame] | 579 | |
Guido van Rossum | f416981 | 2008-03-17 22:56:06 +0000 | [diff] [blame] | 580 | - A new pickle protocol (protocol 3) is added with explicit support |
| 581 | for bytes. This is the default protocol. It intentionally cannot |
| 582 | be unpickled by Python 2.x. |
| 583 | |
| 584 | - When a pickle written by Python 2.x contains an (8-bit) str |
| 585 | instance, this is now decoded to a (Unicode) str instance. The |
| 586 | encoding used to do this defaults to ASCII, but can be overridden |
| 587 | via two new keyword arguments to the Unpickler class. Previously |
| 588 | this would create bytes instances, which is usually wrong: str |
| 589 | instances are often used to pickle attribute names etc., and text is |
| 590 | more common than binary data anyway. |
| 591 | |
Martin v. Löwis | 071ef77 | 2008-03-08 11:24:24 +0000 | [diff] [blame] | 592 | - Default to ASCII as the locale.getpreferredencoding, if the POSIX |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 593 | system doesn't support CODESET and LANG isn't set or doesn't allow |
| 594 | deduction of an encoding. |
Martin v. Löwis | 071ef77 | 2008-03-08 11:24:24 +0000 | [diff] [blame] | 595 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 596 | - Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned |
| 597 | value. |
Gregory P. Smith | 425136b | 2008-03-17 20:45:21 +0000 | [diff] [blame] | 598 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 599 | - Issue #719888: Updated tokenize to use a bytes API. generate_tokens |
| 600 | has been renamed tokenize and now works with bytes rather than |
| 601 | strings. A new detect_encoding function has been added for |
| 602 | determining source file encoding according to PEP-0263. Token |
| 603 | sequences returned by tokenize always start with an ENCODING token |
| 604 | which specifies the encoding used to decode the file. This token is |
| 605 | used to encode the output of untokenize back to bytes. |
| 606 | |
Barry Warsaw | a9d499d | 2008-03-01 18:38:07 +0000 | [diff] [blame] | 607 | |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 608 | What's New in Python 3.0a3? |
| 609 | =========================== |
| 610 | |
Barry Warsaw | 659fc42 | 2008-03-01 17:45:23 +0000 | [diff] [blame] | 611 | *Release date: 29-Feb-2008* |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 612 | |
| 613 | Core and Builtins |
| 614 | ----------------- |
| 615 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 616 | - Issue #2282: io.TextIOWrapper was not overriding seekable() from |
| 617 | io.IOBase. |
Ka-Ping Yee | ddaa706 | 2008-03-17 20:35:15 +0000 | [diff] [blame] | 618 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 619 | - Issue #2115: Important speedup in setting __slot__ attributes. Also |
| 620 | prevent a possible crash: an Abstract Base Class would try to access |
| 621 | a slot on a registered virtual subclass. |
Christian Heimes | a156e09 | 2008-02-16 07:38:31 +0000 | [diff] [blame] | 622 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 623 | - Fixed repr() and str() of complex numbers with infinity or nan as |
| 624 | real or imaginary part. |
Christian Heimes | a156e09 | 2008-02-16 07:38:31 +0000 | [diff] [blame] | 625 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 626 | - Clear all free list during a gc.collect() of the highest generation |
| 627 | in order to allow pymalloc to free more arenas. Python may give back |
| 628 | memory to the OS earlier. |
Christian Heimes | a156e09 | 2008-02-16 07:38:31 +0000 | [diff] [blame] | 629 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 630 | - Issue #2045: Fix an infinite recursion triggered when printing a |
| 631 | subclass of collections.defaultdict, if its default_factory is set |
| 632 | to a bound method. |
Christian Heimes | a156e09 | 2008-02-16 07:38:31 +0000 | [diff] [blame] | 633 | |
| 634 | - Fixed a minor memory leak in dictobject.c. The content of the free |
| 635 | list was not freed on interpreter shutdown. |
| 636 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 637 | - Limit free list of method and builtin function objects to 256 |
| 638 | entries each. |
Christian Heimes | a156e09 | 2008-02-16 07:38:31 +0000 | [diff] [blame] | 639 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 640 | - Patch #1953: Added ``sys._compact_freelists()`` and the C API |
| 641 | functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList`` |
Christian Heimes | a156e09 | 2008-02-16 07:38:31 +0000 | [diff] [blame] | 642 | to compact the internal free lists of pre-allocted ints and floats. |
| 643 | |
| 644 | - Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls. |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 645 | Python expected the return type int but the fork familie returns |
| 646 | pi_t. |
Christian Heimes | a156e09 | 2008-02-16 07:38:31 +0000 | [diff] [blame] | 647 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 648 | - Issue #1678380: Fix a bug that identifies 0j and -0j when they |
| 649 | appear in the same code unit. |
Christian Heimes | a156e09 | 2008-02-16 07:38:31 +0000 | [diff] [blame] | 650 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 651 | - Issue #2025: Added tuple.count() and tuple.index() methods to comply |
| 652 | with the collections.Sequence API. |
Raymond Hettinger | 65baa34 | 2008-02-07 00:41:02 +0000 | [diff] [blame] | 653 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 654 | - Fixed multiple reinitialization of the Python interpreter. The small |
| 655 | int list in longobject.c has caused a seg fault during the third |
| 656 | finalization. |
Christian Heimes | dfc12ed | 2008-01-31 15:16:38 +0000 | [diff] [blame] | 657 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 658 | - Issue #1973: bytes.fromhex('') raised SystemError. |
Christian Heimes | c04dac0 | 2008-01-30 11:27:57 +0000 | [diff] [blame] | 659 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 660 | - Issue #1771: remove cmp parameter from sorted() and list.sort(). |
Raymond Hettinger | 70b64fc | 2008-01-30 20:15:17 +0000 | [diff] [blame] | 661 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 662 | - Issue #1969: split and rsplit in bytearray are inconsistent. |
Christian Heimes | 7b87615 | 2008-01-30 09:51:48 +0000 | [diff] [blame] | 663 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 664 | - map() no longer accepts None for the first argument. Use zip() |
| 665 | instead. |
Raymond Hettinger | 1dfde1d | 2008-01-22 23:25:35 +0000 | [diff] [blame] | 666 | |
Facundo Batista | 2336bdd | 2008-01-19 19:12:01 +0000 | [diff] [blame] | 667 | - Issue #1769: Now int("- 1") is not allowed any more. |
| 668 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 669 | - Object/longobject.c: long(float('nan')) raises an OverflowError |
| 670 | instead of returning 0. |
Christian Heimes | 386cd1e | 2008-01-15 02:01:20 +0000 | [diff] [blame] | 671 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 672 | - Issue #1762972: __file__ points to the source file instead of the |
| 673 | pyc/pyo file if the py file exists. |
Christian Heimes | 3b06e53 | 2008-01-07 20:12:44 +0000 | [diff] [blame] | 674 | |
Guido van Rossum | ab078dd | 2008-01-06 00:09:11 +0000 | [diff] [blame] | 675 | - Issue #1393: object_richcompare() returns NotImplemented instead of |
| 676 | False if the objects aren't equal, to give the other side a chance. |
| 677 | |
Guido van Rossum | e239b00 | 2008-01-06 00:44:20 +0000 | [diff] [blame] | 678 | - Issue #1692: Interpreter was not displaying location of SyntaxError. |
Kurt B. Kaiser | 43b1509 | 2008-01-05 04:32:22 +0000 | [diff] [blame] | 679 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 680 | - Improve some exception messages when Windows fails to load an |
| 681 | extension module. Now we get for example '%1 is not a valid Win32 |
| 682 | application' instead of 'error code 193'. Also use Unicode strings |
| 683 | to deal with non-English locales. |
Amaury Forgeot d'Arc | bccd63c | 2008-01-04 01:21:27 +0000 | [diff] [blame] | 684 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 685 | - Issue #1587: Added instancemethod wrapper for PyCFunctions. The |
| 686 | Python C API has gained a new type *PyInstanceMethod_Type* and the |
| 687 | functions *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)* |
| 688 | and *PyInstanceMethod_Function(im)*. |
Christian Heimes | a3534a6 | 2007-12-11 19:56:40 +0000 | [diff] [blame] | 689 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 690 | - Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed |
| 691 | from the gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE |
| 692 | are now enough to print the corresponding list of objects considered |
| 693 | by the garbage collector. |
Amaury Forgeot d'Arc | ad8dcd5 | 2007-12-10 23:58:35 +0000 | [diff] [blame] | 694 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 695 | - Issue #1573: Improper use of the keyword-only syntax makes the |
| 696 | parser crash. |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 697 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 698 | - Issue #1564: The set implementation should special-case PyUnicode |
| 699 | instead of PyString. |
Christian Heimes | 0ded5b5 | 2007-12-10 15:50:56 +0000 | [diff] [blame] | 700 | |
Guido van Rossum | ea6775b | 2008-02-21 20:16:31 +0000 | [diff] [blame] | 701 | - Patch #1031213: Decode source line in SyntaxErrors back to its |
| 702 | original source encoding. |
Christian Heimes | 7131fd9 | 2008-02-19 14:21:46 +0000 | [diff] [blame] | 703 | |
Christian Heimes | 09aaa88 | 2008-02-23 15:01:06 +0000 | [diff] [blame] | 704 | - inspect.getsource() includes the decorators again. |
| 705 | |
Guido van Rossum | ea6775b | 2008-02-21 20:16:31 +0000 | [diff] [blame] | 706 | - Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a |
| 707 | mountpoint. |
Christian Heimes | 7131fd9 | 2008-02-19 14:21:46 +0000 | [diff] [blame] | 708 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 709 | - Fix utf-8-sig incremental decoder, which didn't recognise a BOM when |
| 710 | the first chunk fed to the decoder started with a BOM, but was |
| 711 | longer than 3 bytes. |
Christian Heimes | 7131fd9 | 2008-02-19 14:21:46 +0000 | [diff] [blame] | 712 | |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 713 | Extension Modules |
| 714 | ----------------- |
| 715 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 716 | - Code for itertools ifilter(), imap(), and izip() moved to bultins |
| 717 | and renamed to filter(), map(), and zip(). Also, renamed |
| 718 | izip_longest() to zip_longest() and ifilterfalse() to filterfalse(). |
Raymond Hettinger | 736c0ab | 2008-03-13 02:09:15 +0000 | [diff] [blame] | 719 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 720 | - Issue #1762972: Readded the reload() function as imp.reload(). |
Guido van Rossum | ea6775b | 2008-02-21 20:16:31 +0000 | [diff] [blame] | 721 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 722 | - Bug #2111: mmap segfaults when trying to write a block opened with |
| 723 | PROT_READ. |
Christian Heimes | a156e09 | 2008-02-16 07:38:31 +0000 | [diff] [blame] | 724 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 725 | - Issue #2063: correct order of utime and stime in os.times() result |
| 726 | on Windows. |
Christian Heimes | 7131fd9 | 2008-02-19 14:21:46 +0000 | [diff] [blame] | 727 | |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 728 | Library |
| 729 | ------- |
| 730 | |
Raymond Hettinger | 48b8b66 | 2008-02-05 01:53:00 +0000 | [diff] [blame] | 731 | - Weakref dictionaries now inherit from MutableMapping. |
Raymond Hettinger | 48b8b66 | 2008-02-05 01:53:00 +0000 | [diff] [blame] | 732 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 733 | - Created new UserDict class in collections module. This one inherits |
| 734 | from and complies with the MutableMapping ABC. Also, moved |
| 735 | UserString and UserList to the collections module. The |
| 736 | MutableUserString class was removed. |
Raymond Hettinger | 48b8b66 | 2008-02-05 01:53:00 +0000 | [diff] [blame] | 737 | |
Guido van Rossum | ea6775b | 2008-02-21 20:16:31 +0000 | [diff] [blame] | 738 | - Removed UserDict.DictMixin. Replaced all its uses with |
| 739 | collections.MutableMapping. |
Raymond Hettinger | edf3b73 | 2008-02-04 22:07:15 +0000 | [diff] [blame] | 740 | |
Guido van Rossum | e239b00 | 2008-01-06 00:44:20 +0000 | [diff] [blame] | 741 | - Issue #1703: getpass() should flush after writing prompt. |
Christian Heimes | fc5aa9d | 2007-12-11 09:00:01 +0000 | [diff] [blame] | 742 | |
Guido van Rossum | e239b00 | 2008-01-06 00:44:20 +0000 | [diff] [blame] | 743 | - Issue #1585: IDLE uses non-existent xrange() function. |
| 744 | |
| 745 | - Issue #1578: Problems in win_getpass. |
| 746 | |
Georg Brandl | 52d168a | 2008-01-07 18:10:24 +0000 | [diff] [blame] | 747 | Build |
| 748 | ----- |
| 749 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 750 | - Renamed --enable-unicode configure flag to --with-wide-unicode, |
| 751 | since Unicode strings can't be disabled anymore. |
Georg Brandl | 52d168a | 2008-01-07 18:10:24 +0000 | [diff] [blame] | 752 | |
Guido van Rossum | e239b00 | 2008-01-06 00:44:20 +0000 | [diff] [blame] | 753 | C API |
| 754 | ----- |
| 755 | |
| 756 | - Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, |
| 757 | Py_TYPE and Py_REFCNT. |
| 758 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 759 | - New API PyImport_ImportModuleNoBlock(), works like |
| 760 | PyImport_ImportModule() but won't block on the import lock |
| 761 | (returning an error instead). |
Christian Heimes | 0ec88b3 | 2007-12-10 17:02:00 +0000 | [diff] [blame] | 762 | |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 763 | |
Fred Drake | 0e474a8 | 2007-10-11 18:01:43 +0000 | [diff] [blame] | 764 | What's New in Python 3.0a2? |
Christian Heimes | bc87341 | 2007-12-08 22:11:32 +0000 | [diff] [blame] | 765 | =========================== |
Fred Drake | 0e474a8 | 2007-10-11 18:01:43 +0000 | [diff] [blame] | 766 | |
Guido van Rossum | 99533a9 | 2007-12-06 05:07:41 +0000 | [diff] [blame] | 767 | *Release date: 07-Dec-2007* |
| 768 | |
| 769 | (Note: this list is incomplete.) |
Fred Drake | 0e474a8 | 2007-10-11 18:01:43 +0000 | [diff] [blame] | 770 | |
Guido van Rossum | 40d20bc | 2007-10-22 00:09:51 +0000 | [diff] [blame] | 771 | Core and Builtins |
| 772 | ----------------- |
| 773 | |
Brett Cannon | 37f7e6e | 2007-10-26 05:42:09 +0000 | [diff] [blame] | 774 | - str8 now has the same construction signature as bytes. |
| 775 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 776 | - Comparisons between str and str8 now return False/True for ==/!=. |
| 777 | sqlite3 returns str8 when recreating on object from it's __conform__ |
| 778 | value. The struct module returns str8 for all string-related |
| 779 | formats. This was true before this change, but becomes more |
| 780 | apparent thanks to string comparisons always being False. |
Brett Cannon | 4043001 | 2007-10-22 20:24:51 +0000 | [diff] [blame] | 781 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 782 | - Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode, |
| 783 | buffer, encoding, newline)`. |
Guido van Rossum | 40d20bc | 2007-10-22 00:09:51 +0000 | [diff] [blame] | 784 | |
| 785 | - Fixed `imp.find_module()` to obey the -*- coding: -*- header. |
| 786 | |
| 787 | - Changed `__file__` and `co_filename` to unicode. The path names are decoded |
Antoine Pitrou | 6e1df8d | 2008-07-25 19:58:18 +0000 | [diff] [blame] | 788 | with `Py_FileSystemDefaultEncoding` and a new API method |
Guido van Rossum | 40d20bc | 2007-10-22 00:09:51 +0000 | [diff] [blame] | 789 | `PyUnicode_DecodeFSDefault(char*)` was added. |
| 790 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 791 | - io.open() and _fileio.FileIO have grown a new argument closefd. A |
| 792 | false value disables the closing of the file descriptor. |
Guido van Rossum | 2dced8b | 2007-10-30 17:27:30 +0000 | [diff] [blame] | 793 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 794 | - Added a new option -b to issues warnings (-bb for errors) about |
| 795 | certain operations between bytes/buffer and str like str(b'') and |
| 796 | comparison. |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 797 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 798 | - The standards streams sys.stdin, stdout and stderr may be None when |
| 799 | the when the C runtime library returns an invalid file descriptor |
| 800 | for the streams (fileno(stdin) < 0). For now this happens only for |
| 801 | Windows GUI apps and scripts started with `pythonw.exe`. |
Christian Heimes | 58cb1b8 | 2007-11-13 02:19:40 +0000 | [diff] [blame] | 802 | |
Christian Heimes | bce52be | 2007-11-17 19:08:41 +0000 | [diff] [blame] | 803 | - Added PCbuild9 directory for VS 2008. |
| 804 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 805 | - Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to |
| 806 | work around a name clash with VS 2008 on Windows. |
Christian Heimes | bce52be | 2007-11-17 19:08:41 +0000 | [diff] [blame] | 807 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 808 | - Unbound methods are gone for good. ClassObject.method returns an |
| 809 | ordinary function object, instance.method still returns a bound |
| 810 | method object. The API of bound methods is cleaned up, too. The |
| 811 | im_class attribute is removed and im_func + im_self are renamed to |
| 812 | __func__ and __self__. The factory PyMethod_New takes only func and |
| 813 | instance as argument. |
Christian Heimes | ff73795 | 2007-11-27 10:40:20 +0000 | [diff] [blame] | 814 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 815 | - intobject.h is no longer included by Python.h. The remains were |
| 816 | moved to longobject.h. It still exists to define several aliases |
| 817 | from PyInt_ to PyLong_ functions. |
Christian Heimes | f78b1c6 | 2007-12-02 16:52:32 +0000 | [diff] [blame] | 818 | |
Christian Heimes | a37d4c6 | 2007-12-04 23:02:19 +0000 | [diff] [blame] | 819 | - Removed sys.maxint, use sys.maxsize instead. |
| 820 | |
Fred Drake | 0e474a8 | 2007-10-11 18:01:43 +0000 | [diff] [blame] | 821 | Extension Modules |
| 822 | ----------------- |
| 823 | |
| 824 | - The `hotshot` profiler has been removed; use `cProfile` instead. |
| 825 | |
Brett Cannon | e9fd231 | 2007-10-12 19:18:19 +0000 | [diff] [blame] | 826 | Library |
| 827 | ------- |
| 828 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 829 | - When loading an external file using testfile(), the passed-in |
| 830 | encoding argument was being ignored if __loader__ is defined and |
| 831 | forcing the source to be UTF-8. |
Brett Cannon | e9fd231 | 2007-10-12 19:18:19 +0000 | [diff] [blame] | 832 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 833 | - The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have |
| 834 | been removed in favor of the tempfile module. |
Guido van Rossum | 687b9c0 | 2007-10-25 23:18:51 +0000 | [diff] [blame] | 835 | |
Christian Heimes | c9543e4 | 2007-11-28 08:28:28 +0000 | [diff] [blame] | 836 | - Removed the 'new' module. |
| 837 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 838 | - Removed all types from the 'types' module that are easily accessable |
| 839 | through builtins. |
Brett Cannon | e9fd231 | 2007-10-12 19:18:19 +0000 | [diff] [blame] | 840 | |
Georg Brandl | 52d168a | 2008-01-07 18:10:24 +0000 | [diff] [blame] | 841 | |
Guido van Rossum | 4405cf3 | 2007-08-30 17:16:55 +0000 | [diff] [blame] | 842 | What's New in Python 3.0a1? |
Guido van Rossum | 45aecf4 | 2006-03-15 04:58:47 +0000 | [diff] [blame] | 843 | ========================== |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 844 | |
Guido van Rossum | 4405cf3 | 2007-08-30 17:16:55 +0000 | [diff] [blame] | 845 | *Release date: 31-Aug-2007* |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 846 | |
| 847 | Core and Builtins |
| 848 | ----------------- |
| 849 | |
Martin v. Löwis | 4738340 | 2007-08-15 07:32:56 +0000 | [diff] [blame] | 850 | - PEP 3131: Support non-ASCII identifiers. |
| 851 | |
Martin v. Löwis | 447d33e | 2007-07-29 18:10:01 +0000 | [diff] [blame] | 852 | - PEP 3120: Change default encoding to UTF-8. |
| 853 | |
Martin v. Löwis | 9f2e346 | 2007-07-21 17:22:18 +0000 | [diff] [blame] | 854 | - PEP 3123: Use proper C inheritance for PyObject. |
| 855 | |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 856 | - Removed the __oct__ and __hex__ special methods and added a bin() |
| 857 | builtin function. |
| 858 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 859 | - PEP 3127: octal literals now start with "0o". Old-style octal |
| 860 | literals are invalid. There are binary literals with a prefix of |
| 861 | "0b". This also affects int(x, 0). |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 862 | |
Guido van Rossum | e7ba495 | 2007-06-06 23:52:48 +0000 | [diff] [blame] | 863 | - None, True, False are now keywords. |
| 864 | |
Guido van Rossum | 29478ef | 2007-05-29 00:39:44 +0000 | [diff] [blame] | 865 | - PEP 3119: isinstance() and issubclass() can be overridden. |
| 866 | |
Guido van Rossum | ebe3e16 | 2007-05-17 18:20:34 +0000 | [diff] [blame] | 867 | - Remove BaseException.message. |
| 868 | |
Guido van Rossum | 1bc535d | 2007-05-15 18:46:22 +0000 | [diff] [blame] | 869 | - Remove tuple parameter unpacking (PEP 3113). |
| 870 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 871 | - Remove the f_restricted attribute from frames. This naturally leads |
| 872 | to the removal of PyEval_GetRestricted() and PyFrame_IsRestricted(). |
Guido van Rossum | a8add0e | 2007-05-14 22:03:55 +0000 | [diff] [blame] | 873 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 874 | - PEP 3132 was accepted. That means that you can do ``a, *b = |
| 875 | range(5)`` to assign 0 to a and [1, 2, 3, 4] to b. |
Guido van Rossum | 0368b72 | 2007-05-11 16:50:42 +0000 | [diff] [blame] | 876 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 877 | - range() now returns an iterator rather than a list. Floats are not |
| 878 | allowed. xrange() is no longer defined. |
Guido van Rossum | 805365e | 2007-05-07 22:24:25 +0000 | [diff] [blame] | 879 | |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 880 | - Patch #1660500: hide iteration variable in list comps, add set comps |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 881 | and use common code to handle compilation of iterative expressions. |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 882 | |
Guido van Rossum | e27dc72 | 2007-03-27 22:37:34 +0000 | [diff] [blame] | 883 | - By default, != returns the opposite of ==, unless the latter returns |
| 884 | NotImplemented. |
| 885 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 886 | - Patch #1680961: sys.exitfunc has been removed and replaced with a |
| 887 | private C-level API. |
Collin Winter | 670e692 | 2007-03-21 02:57:17 +0000 | [diff] [blame] | 888 | |
Georg Brandl | 801dd73 | 2007-03-18 20:18:31 +0000 | [diff] [blame] | 889 | - PEP 3115: new metaclasses: the metaclass is now specified as a |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 890 | keyword arg in the class statement, which can now use the full |
| 891 | syntax of a parameter list. Also, the metaclass can implement a |
| 892 | __prepare__ function which will be called to create the dictionary |
| 893 | for the new class namespace. |
Georg Brandl | 801dd73 | 2007-03-18 20:18:31 +0000 | [diff] [blame] | 894 | |
Georg Brandl | 428f064 | 2007-03-18 18:35:15 +0000 | [diff] [blame] | 895 | - The long-deprecated argument "pend" of PyFloat_FromString() has been |
| 896 | removed. |
| 897 | |
Georg Brandl | e32b422 | 2007-03-10 22:13:27 +0000 | [diff] [blame] | 898 | - The dir() function has been extended to call the __dir__() method on |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 899 | its argument, if it exists. If not, it will work like before. This |
| 900 | allows customizing the output of dir() in the presence of a |
| 901 | __getattr__(). |
Brett Cannon | ba7bf49 | 2007-02-27 00:15:55 +0000 | [diff] [blame] | 902 | |
Neal Norwitz | 8dfc4a9 | 2007-08-11 06:39:53 +0000 | [diff] [blame] | 903 | - Removed support for __members__ and __methods__. |
| 904 | |
Georg Brandl | e32b422 | 2007-03-10 22:13:27 +0000 | [diff] [blame] | 905 | - Removed indexing/slicing on BaseException. |
Neal Norwitz | 2633c69 | 2007-02-26 22:22:47 +0000 | [diff] [blame] | 906 | |
Georg Brandl | e32b422 | 2007-03-10 22:13:27 +0000 | [diff] [blame] | 907 | - input() became raw_input(): the name input() now implements the |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 908 | functionality formerly known as raw_input(); the name raw_input() is |
| 909 | no longer defined. |
Guido van Rossum | 0240b92 | 2007-02-26 21:23:50 +0000 | [diff] [blame] | 910 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 911 | - Classes listed in an 'except' clause must inherit from |
| 912 | BaseException. |
Brett Cannon | f74225d | 2007-02-26 21:10:16 +0000 | [diff] [blame] | 913 | |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 914 | - PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone; |
Guido van Rossum | cf1be88 | 2007-08-30 22:07:17 +0000 | [diff] [blame] | 915 | and .keys(), .items(), .values() return dict views, which behave |
| 916 | like sets. |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 917 | |
Guido van Rossum | 8b54536 | 2007-02-09 23:52:14 +0000 | [diff] [blame] | 918 | - PEP 3105: print is now a function. Also (not in the PEP) the |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 919 | 'softspace' attribute of files is now gone (since print() doesn't |
| 920 | use it). A side effect of this change is that you can get |
| 921 | incomplete output lines in interactive sessions: |
Guido van Rossum | 8b54536 | 2007-02-09 23:52:14 +0000 | [diff] [blame] | 922 | |
| 923 | >>> print(42, end="") |
Kurt B. Kaiser | 2c7f314 | 2007-08-30 21:52:19 +0000 | [diff] [blame] | 924 | 42>>> |
Guido van Rossum | 8b54536 | 2007-02-09 23:52:14 +0000 | [diff] [blame] | 925 | |
| 926 | 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] | 927 | |
Brett Cannon | 398db8b | 2007-01-29 23:44:37 +0000 | [diff] [blame] | 928 | - PEP 3102: keyword-only arguments. |
| 929 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 930 | - Int/Long unification is complete. The 'long' built-in type and |
| 931 | literals with trailing 'L' or 'l' have been removed. Performance |
| 932 | may be sub-optimal (haven't really benchmarked). |
Guido van Rossum | ab18684 | 2007-01-14 03:42:30 +0000 | [diff] [blame] | 933 | |
| 934 | - 'except E, V' must now be spelled as 'except E as V' and deletes V |
| 935 | at the end of the except clause; V must be a simple name. |
| 936 | |
Neal Norwitz | c150536 | 2006-12-28 06:47:50 +0000 | [diff] [blame] | 937 | - Added function annotations per PEP 3107. |
| 938 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 939 | - Added nonlocal declaration from PEP 3104: |
Jeremy Hylton | a4f9fc6 | 2007-02-27 15:53:28 +0000 | [diff] [blame] | 940 | |
| 941 | >>> def f(x): |
| 942 | ... def inc(): |
| 943 | ... nonlocal x |
| 944 | ... x += 1 |
| 945 | ... return x |
| 946 | ... return inc |
| 947 | ... |
| 948 | >>> inc = f(0) |
| 949 | >>> inc() |
| 950 | 1 |
| 951 | >>> inc() |
| 952 | 2 |
| 953 | |
Georg Brandl | 66a796e | 2006-12-19 20:50:34 +0000 | [diff] [blame] | 954 | - Moved intern() to sys.intern(). |
| 955 | |
| 956 | - exec is now a function. |
| 957 | |
| 958 | - Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__. |
Jack Diederich | 4dafcc4 | 2006-11-28 19:15:13 +0000 | [diff] [blame] | 959 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 960 | - Classic classes are a thing of the past. All classes are new style. |
| 961 | |
| 962 | - Exceptions *must* derive from BaseException. |
| 963 | |
| 964 | - Integer division always returns a float. The -Q option is no more. |
| 965 | All the following are gone: |
| 966 | * PyNumber_Divide and PyNumber_InPlaceDivide |
| 967 | * __div__, __rdiv__, and __idiv__ |
| 968 | * nb_divide, nb_inplace_divide |
| 969 | * operator.div, operator.idiv, operator.__div__, operator.__idiv__ |
| 970 | (Only __truediv__ and __floordiv__ remain, not sure how to handle them |
| 971 | if we want to re-use __div__ and friends. If we do, it will make |
| 972 | it harder to write code for both 2.x and 3.x.) |
| 973 | |
| 974 | - 'as' and 'with' are keywords. |
| 975 | |
| 976 | - Absolute import is the default behavior for 'import foo' etc. |
| 977 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 978 | - Removed support for syntax: backticks (ie, `x`), <>. |
Neal Norwitz | 378b2c9 | 2006-08-29 07:57:22 +0000 | [diff] [blame] | 979 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 980 | - Removed these Python builtins: apply(), callable(), coerce(), |
| 981 | execfile(), file(), reduce(), reload(). |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 982 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 983 | - Removed these Python methods: {}.has_key. |
Neal Norwitz | 378b2c9 | 2006-08-29 07:57:22 +0000 | [diff] [blame] | 984 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 985 | - Removed these opcodes: BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 986 | |
| 987 | - Remove C API support for restricted execution. |
| 988 | |
Guido van Rossum | cf1be88 | 2007-08-30 22:07:17 +0000 | [diff] [blame] | 989 | - zip(), map() and filter() now return iterators, behaving like their |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 990 | itertools counterparts. This also affect map()'s behavior on |
Guido van Rossum | cf1be88 | 2007-08-30 22:07:17 +0000 | [diff] [blame] | 991 | sequences of unequal length -- it now stops after the shortest one |
| 992 | is exhausted. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 993 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 994 | - Additions: set literals, set comprehensions, ellipsis literal. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 995 | |
| 996 | - Added class decorators per PEP 3129. |
| 997 | |
| 998 | |
| 999 | Extension Modules |
| 1000 | ----------------- |
| 1001 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1002 | - Removed the imageop module. Obsolete long with its unit tests |
| 1003 | becoming useless from the removal of rgbimg and imgfile. |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 1004 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1005 | - Removed these attributes from the operator module: div, idiv, |
| 1006 | __div__, __idiv__, isCallable, sequenceIncludes. |
| 1007 | |
| 1008 | - Removed these attributes from the sys module: exc_clear(), exc_type, |
| 1009 | exc_value, exc_traceback. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1010 | |
| 1011 | |
| 1012 | Library |
| 1013 | ------- |
| 1014 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1015 | - Removed the compiler package. Use of the _ast module and (an |
| 1016 | eventual) AST -> bytecode mechanism. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1017 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1018 | - Removed these modules: audiodev, Bastion, bsddb185, exceptions, |
| 1019 | linuxaudiodev, md5, MimeWriter, mimify, popen2, rexec, sets, sha, |
| 1020 | stringold, strop, sunaudiodev, timing, xmllib. |
Guido van Rossum | 33d2689 | 2007-08-05 15:29:28 +0000 | [diff] [blame] | 1021 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1022 | - Moved the toaiff module to Tools/Demos. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1023 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1024 | - Removed obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL, |
| 1025 | DEVICE, ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile, |
| 1026 | IOCTL, jpeg, panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1027 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1028 | - Removed obsolete functions: commands.getstatus(), os.popen*(). |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1029 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1030 | - Removed functions in the string module that are also string methods; |
Martin v. Löwis | 967f1e3 | 2007-08-14 09:23:10 +0000 | [diff] [blame] | 1031 | Remove string.{letters, lowercase, uppercase}. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1032 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1033 | - Removed support for long obsolete platforms: plat-aix3, plat-irix5. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1034 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1035 | - Removed xmlrpclib.SlowParser. It was based on xmllib. |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1036 | |
| 1037 | - Patch #1680961: atexit has been reimplemented in C. |
| 1038 | |
Walter Dörwald | 41980ca | 2007-08-16 21:55:45 +0000 | [diff] [blame] | 1039 | - Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE. |
| 1040 | |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1041 | Build |
| 1042 | ----- |
| 1043 | |
| 1044 | C API |
| 1045 | ----- |
| 1046 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1047 | - Removed these Python slots: __coerce__, __div__, __idiv__, __rdiv__. |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 1048 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1049 | - Removed these C APIs: PyNumber_Coerce(), PyNumber_CoerceEx(), |
| 1050 | PyMember_Get, PyMember_Set. |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 1051 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1052 | - Removed these C slots/fields: nb_divide, nb_inplace_divide. |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 1053 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1054 | - Removed these macros: staticforward, statichere, PyArg_GetInt, |
| 1055 | PyArg_NoArgs, _PyObject_Del. |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 1056 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1057 | - Removed these typedefs: intargfunc, intintargfunc, intobjargproc, |
| 1058 | intintobjargproc, getreadbufferproc, getwritebufferproc, |
| 1059 | getsegcountproc, getcharbufferproc, memberlist. |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 1060 | |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 1061 | Tests |
| 1062 | ----- |
| 1063 | |
Brett Cannon | e7a30f7 | 2008-03-03 03:36:27 +0000 | [diff] [blame] | 1064 | - Removed test.testall as test.regrtest replaces it. |
| 1065 | |
Brett Cannon | ced04e0 | 2005-02-13 22:53:22 +0000 | [diff] [blame] | 1066 | Documentation |
| 1067 | ------------- |
| 1068 | |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 1069 | Mac |
| 1070 | --- |
| 1071 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1072 | - The cfmfile module was removed. |
Guido van Rossum | e7ba495 | 2007-06-06 23:52:48 +0000 | [diff] [blame] | 1073 | |
Guido van Rossum | 845702c | 2007-08-30 18:44:53 +0000 | [diff] [blame] | 1074 | Platforms |
| 1075 | --------- |
| 1076 | |
| 1077 | - Support for BeOS and AtheOS was removed (according to PEP 11). |
| 1078 | |
| 1079 | - Support for RiscOS, Irix, Tru64 was removed (alledgedly). |
| 1080 | |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 1081 | Tools/Demos |
| 1082 | ----------- |
| 1083 | |
Georg Brandl | 52b92cc | 2008-05-25 09:43:03 +0000 | [diff] [blame] | 1084 | |
Skip Montanaro | e5d7f7f | 2002-09-20 14:16:59 +0000 | [diff] [blame] | 1085 | **(For information about older versions, consult the HISTORY file.)** |