[issue41905] add update_abstractmethods function to update an ABC's abstract methods

[Ben Avrahami]

Ben Avrahami <avrahami.ben at gmail.com> added the comment:

This is a behavior that the PR changes. total_ordering should be able to override/implement abstract methods (in my opinion). If this ends up a strickling point then we can exclude total_ordering from this issue.

Regardless, I think that this behavior is extremely unintuitive.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41905>
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