[issue18200] Update stdlib to use ModuleNotFoundError

[Jesús Cea Avión]

Jesús Cea Avión added the comment:

> As ModuleNotFoundError is going to be reverted so should the changesets for this issue.

Could you possibly clarify this?. Pointers?

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18200>
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