[issue5996] abstract class instantiable when subclassing dict

[Eugene Toder]

Eugene Toder <eltoder at gmail.com> added the comment:

They are, when there's a most specific metaclass -- the one which is a subclass of all others (described here http://www.python.org/download/releases/2.2.3/descrintro/#metaclasses, implemented here http://hg.python.org/cpython/file/ab162f925761/Objects/typeobject.c#l1956). Since ABCMeta is a subclass of type this holds.

Also, in the original example there's no multiple inheritance at all.

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