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Fri Apr 13 12:09:29 EDT 2001 · https://mail.python.org/pipermail/python-list/2001-April/103680.html

Alex Martelli wrote:

> class B:
>     def __init__(self):
>         if self.__class__ == B:
>             raise AbstractClassException, B
>         # proceed with initialization tasks

Ah, that's a nice solution.

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idioms for abstract base classes