Jeffrey Yasskin added the comment: I'd like a second opinion about whether it's a good idea to commit the attached patch, which moves abc._Abstract into object. Its 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. For comparison: $ ./python.exe -m timeit -s 'import abc' -s 'class Foo(object): pass' 'Foo()' 10000000 loops, best of 3: 0.203 usec per loop $ ./python.exe -m timeit -s 'import abc' -s 'class Foo(object):' -s ' def __new__(cls): return super(Foo, cls).__new__(cls)' 'Foo()' 1000000 loops, best of 3: 1.18 usec per loop $ ./python.exe -m timeit -s 'import abc' -s 'from decimal import Decimal' 'Decimal()' 100000 loops, best of 3: 9.51 usec per loop After this patch, the only slowdown I can find is an extra .5us in isinstance, so I think it'll be time to close this bug. Added file: http://bugs.python.org/file9442/optimize_abc.patch __________________________________ Tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue1762> __________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
