03.10.20 12:45, Steven D'Aprano пише:
> On Sat, Oct 03, 2020 at 11:41:16AM +0300, Serhiy Storchaka wrote:
>> issubclass() accept types (extension types and new-style classes),
>> classic classes and arbitrary objects with the __bases__ attribute as
>> its arguments.
> 
> I didn't think classic classes were still possible in Python 3. How do 
> you get them?

They were originally in Python 2.2.2 code when the support of objects
with the __bases__ attribute was added. In Python 3 there are no classic
classes, but some code was written to support them.
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