2.2 features

[Marcin 'Qrczak' Kowalczyk]

Tue, 31 Jul 2001 09:21:40 -0500, Skip Montanaro <skip at pobox.com> pisze:

>     Guido> I love it.  'x in type' as a shorthand for isinstance(x, type).
>     Guido> Checked into CVS!
> 
> How about 'x in type' as a shorthand for 'issubclass(x, type)'
> if x is a type or class instead of an instance?

Bad idea because it overlaps with the previous. You could not check
whether an object is an instance of some class (because of false
positives for objects representing its subclasses) nor whether it's
a subclass (because of false positives for instances).

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