Need instruction on how to use isinstance

alex23 wuwei23 at gmail.com
Mon Jun 28 00:30:37 EDT 2010


Stephen Hansen <me+list/pyt... at ixokai.io> wrote:
> P.S. The removal of callable is something I don't understand in Python
> 3: while generally speaking I do really believe and use duck typing, I
> too have on occassion wanted to dispatch based on 'is callable? do x'.
> Sometimes its not convenient to do so via duck typing. Its rare. But it
> is there. That isinstance()/issubclass got a boost in power with the
> ABC's and registering, while at the same time the ability to introspect
> about the function-y callable-y ness of a function was removed? Makes no
> sense to me. But alas!

There's always: isinstance(<object>, collections.Callable)



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