Antoine Pitrou ec569b7947 Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to ...

match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
mechanism. In the process, fix a bug where isinstance() and issubclass(),
when given a tuple of classes as second argument, were looking up
__instancecheck__ / __subclasscheck__ on the tuple rather than on each
type object.

Reviewed by Benjamin Peterson and Raymond Hettinger.

2008-08-26 22:40:48 +00:00

20 KiB

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