[issue2196] Fix hasattr's exception problems

[Paul Pogonyshev]

Paul Pogonyshev added the comment:

I think it would be better not to hardcode specific 2 exceptional cases
and indeed follow that second way of instanceof(..., Exception).  I
think it was introduced exactly to separate "things that can be caught
by default" from "things that may be caught only in very special cases".
 I don't find it good Python interpreter not following its own rules.

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nosy: +_doublep

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