[issue10569] abc: `issubclass([], my_abstract_type)` raises exception

[Ram Rachum]

Ram Rachum <cool-rr at cool-rr.com> added the comment:

Amaury, I am aware of what `issubclass` does and what `isinstance` does. I am not manually feeding `[]` into `issubclass`. I have an object which can be either a list, or a string, or a callable, or a type. And I want to check whether it's a sub-class of some base class.

So I don't think I should be taking extra precautions before using `issubclass`: If my object is not a subclass of the given base class, I should just get `False`.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue10569>
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