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13 Commits

Author SHA1 Message Date
Benjamin Peterson 52c36051bd Use weakrefs to hold onto classes #2521. 
This also causes the _weakref module to be built into the core.
 2010-08-21 03:03:22 +00:00
Benjamin Peterson bde67df0cd keep UserDict an old-style class 
Be generous in abc.py to allow this.
 2010-06-22 18:09:02 +00:00
Florent Xicluna 47627d5164 #7624: Fix isinstance(foo(), collections.Callable) for old-style classes. 2010-03-08 15:20:28 +00:00
Benjamin Peterson 2deb5c758a raise a clear TypeError when trying to register a non-class 2010-01-27 02:16:42 +00:00
Walter Dörwald 2827709d6d Fix typos. 2009-05-04 16:03:03 +00:00
Georg Brandl bcf7bf3833 Fix 3k-style metaclass syntax in docstrings. 2009-02-28 21:33:10 +00:00
Nick Coghlan 91ae3ea2b4 Issue 3747: Fix caching in ABCMeta.__subclasscheck__ (R: Georg Brandl) 2008-09-02 10:14:47 +00:00
Jeffrey Yasskin b9e15f7555 Make isinstance(OldstyleClass, NewstyleClass) return False instead of raising 
an exception. Issue reported by Joseph Armbruster.
 2008-03-17 16:31:21 +00:00
Jeffrey Yasskin 960b9b7a2f Move abc._Abstract into object by adding a new flag Py_TPFLAGS_IS_ABSTRACT, 
which forbids constructing types that have it set. The effect is to speed

  ./python.exe -m timeit -s 'import abc' -s 'class Foo(object): __metaclass__ = abc.ABCMeta' 'Foo()'

up from 2.5us to 0.201us. This fixes issue 1762.
 2008-02-28 04:45:36 +00:00
Jeffrey Yasskin 57bd60b465 Working on issue #1762: Brought 
./python.exe -m timeit -s 'from fractions import Fraction; f = Fraction(3, 2)' 'isinstance(3, Fraction); isinstance(f, Fraction)'
from 12.3 usec/loop to 3.44 usec/loop and
  ./python.exe -m timeit -s 'from fractions import Fraction' 'Fraction(3, 2)'
from 48.8 usec to 23.6 usec by avoiding genexps and sets in __instancecheck__
and inlining the common case from __subclasscheck__.
 2008-02-13 17:58:04 +00:00
Jeffrey Yasskin fd1c24518b Fix issue 1747: allow classic classes to be checked for being subclasses of 
ABCs.
 2008-01-07 06:09:40 +00:00
Guido van Rossum 64c06e327d Backport of _abccoll.py by Benjamin Arangueren, issue 1383. 
With some changes of my own thrown in (e.g. backport of r58107).
 2007-11-22 00:55:51 +00:00
Guido van Rossum b55911378f Patch # 1026 by Benjamin Aranguren (with Alex Martelli): 
Backport abc.py and isinstance/issubclass overloading to 2.6.

I had to backport test_typechecks.py myself, and make one small change
to abc.py to avoid duplicate work when x.__class__ and type(x) are the
same.
 2007-09-10 22:36:02 +00:00