isinstance is broken

[Michael Hudson]

Carl Banks <imbosol at vt.edu> writes:

> I think a C extension could create an object that is not an instance
> of object, in which case isinstance(something,object) would return
> false.

I think not, because a type is always an object.

isinstance(c, object) == issubclass(type(c), object) == True.
                      ^
           except for old-style instances 

My reading of the source would seem to confirm this, but I could well
have missed something...

Cheers,
M.

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