[issue21408] delegation of `!=` to the right-hand side argument is not always done

[Benjamin Peterson]

Benjamin Peterson added the comment:

The subclass behavior is a red herring.

I meant maybe object.__ne__ should check if the other object has a __ne__ method before falling back on ``not object.__eq__()``.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21408>
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