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Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001+++++++++++
2Python News
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Anthony Baxterb0c66302004-11-04 05:23:17 +00005(editors: check NEWS.help for information about editing NEWS using ReST.)
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Guido van Rossum45aecf42006-03-15 04:58:47 +00007What's New in Python 3000?
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Thomas Wouters4d70c3d2006-06-08 14:42:34 +00009
Neal Norwitz4886cc32006-08-21 17:06:07 +000010*Release date: XX-XXX-200X*
11
12TO DO
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Georg Brandl66a796e2006-12-19 20:50:34 +000015- See PEP 3000, 3100.
Neal Norwitz4886cc32006-08-21 17:06:07 +000016
Neal Norwitz4886cc32006-08-21 17:06:07 +000017- Weed really old/weird stuff from the library.
18
19- Unify range() and xrange().
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Neal Norwitz4886cc32006-08-21 17:06:07 +000021- Rework the standard I/O library to use bytes for binary files.
22
23- Make strings all Unicode.
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Neal Norwitz4886cc32006-08-21 17:06:07 +000025- Get rid of various compatibility-related flags (e.g. division flags).
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Neal Norwitz378b2c92006-08-29 07:57:22 +000027
Neal Norwitz4886cc32006-08-21 17:06:07 +000028Core and Builtins
29-----------------
30
Guido van Rossumcc2b0162007-02-11 06:12:03 +000031- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
32 and .keys(), .items(), .values() return dict views.
33
Guido van Rossum8b545362007-02-09 23:52:14 +000034- PEP 3105: print is now a function. Also (not in the PEP) the
35 'softspace' attribute of files is now gone (since print() doesn't use
36 it). A side effect of this change is that you can get incomplete
37 output lines in interactive sessions:
38
39 >>> print(42, end="")
40 42>>>
41
42 We may be able to fix this after the I/O library rewrite.
Guido van Rossum4502c802007-02-09 05:42:38 +000043
Brett Cannon398db8b2007-01-29 23:44:37 +000044- PEP 3102: keyword-only arguments.
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Guido van Rossumd4588c12007-02-13 19:55:23 +000046- Int/Long unification is complete. The 'long' built-in type
Guido van Rossumec7027f2007-01-30 00:00:40 +000047 and literals with trailing 'L' or 'l' have been removed.
48 Performance may be sub-optimal (haven't really benchmarked).
Guido van Rossumab186842007-01-14 03:42:30 +000049
50- 'except E, V' must now be spelled as 'except E as V' and deletes V
51 at the end of the except clause; V must be a simple name.
52
Neal Norwitzc1505362006-12-28 06:47:50 +000053- Added function annotations per PEP 3107.
54
Georg Brandl66a796e2006-12-19 20:50:34 +000055- Moved intern() to sys.intern().
56
57- exec is now a function.
58
59- Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__.
Jack Diederich4dafcc42006-11-28 19:15:13 +000060
Neal Norwitz4886cc32006-08-21 17:06:07 +000061- Classic classes are a thing of the past. All classes are new style.
62
63- Exceptions *must* derive from BaseException.
64
65- Integer division always returns a float. The -Q option is no more.
66 All the following are gone:
67 * PyNumber_Divide and PyNumber_InPlaceDivide
68 * __div__, __rdiv__, and __idiv__
69 * nb_divide, nb_inplace_divide
70 * operator.div, operator.idiv, operator.__div__, operator.__idiv__
71 (Only __truediv__ and __floordiv__ remain, not sure how to handle them
72 if we want to re-use __div__ and friends. If we do, it will make
73 it harder to write code for both 2.x and 3.x.)
74
75- 'as' and 'with' are keywords.
76
77- Absolute import is the default behavior for 'import foo' etc.
78
Neal Norwitz378b2c92006-08-29 07:57:22 +000079- Removed support for syntax:
80 backticks (`x`), <>
81
Neal Norwitz4886cc32006-08-21 17:06:07 +000082- Removed these Python builtins:
83 apply(), coerce(), input(), raw_input()
84
Neal Norwitz378b2c92006-08-29 07:57:22 +000085- Removed these Python methods:
86 {}.has_key
87
Neal Norwitz4886cc32006-08-21 17:06:07 +000088- Removed these Python slots:
89 __coerce__, __div__, __idiv__, __rdiv__
90
91- Removed these attributes from Python modules:
92 * operator module: div, idiv, __div__, __idiv__
93
Neal Norwitz4886cc32006-08-21 17:06:07 +000094- Removed these C APIs:
Neal Norwitz378b2c92006-08-29 07:57:22 +000095 PyNumber_Coerce(), PyNumber_CoerceEx()
Neal Norwitz4886cc32006-08-21 17:06:07 +000096
97- Removed these C slots/fields:
98 nb_divide, nb_inplace_divide
99
100- Removed these macros:
101 staticforward, statichere, PyArg_GetInt, PyArg_NoArgs
102
103- Removed these typedefs:
104 intargfunc, intintargfunc, intobjargproc, intintobjargproc,
105 getreadbufferproc, getwritebufferproc, getsegcountproc, getcharbufferproc
106
107- Removed these opcodes:
Neal Norwitz378b2c92006-08-29 07:57:22 +0000108 BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT
109
110- zip returns an iterator
111
112- Additions:
Georg Brandl66a796e2006-12-19 20:50:34 +0000113 set literals, ellipsis literal
Neal Norwitz378b2c92006-08-29 07:57:22 +0000114
Neal Norwitz4886cc32006-08-21 17:06:07 +0000115
116Extension Modules
117-----------------
118
119Library
120-------
121
Guido van Rossum893523e2007-01-10 01:29:06 +0000122- Removed all traces of the sets module.
123
Raymond Hettinger4901a1f2004-12-02 08:59:14 +0000124Build
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Raymond Hettinger4901a1f2004-12-02 08:59:14 +0000127C API
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Raymond Hettinger4901a1f2004-12-02 08:59:14 +0000130Tests
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Brett Cannonced04e02005-02-13 22:53:22 +0000133Documentation
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135
Raymond Hettinger4901a1f2004-12-02 08:59:14 +0000136Mac
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138
Hye-Shik Chang4e422812005-07-17 02:36:59 +0000139New platforms
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Raymond Hettinger4901a1f2004-12-02 08:59:14 +0000142Tools/Demos
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Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000145**(For information about older versions, consult the HISTORY file.)**