[issue2235] __eq__ / __hash__ check doesn't take inheritance into account

[Nick Coghlan]

Nick Coghlan <ncoghlan at gmail.com> added the comment:

Unhashable types that implement an "I'm not hashable" __hash__ method
will indeed require modification in 2.6 in order to avoid incorrectly
passing an "isinstance(obj, collections.Hashable)" check (note that
several of the mutable standard library types such as collections.deque
are incorrectly detected as hashable in the current SVN trunk).

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue2235>
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