[issue15651] PEP 3121, 384 refactoring applied to elementtree module

[Eli Bendersky]

Eli Bendersky added the comment:

> Can you explain what use case it tries to cover?

What I'm trying to say is that although I think I understand its effect (if the same sub-interpreter re-imports _elementtree bypassing the Python module cache, this is an additional level of caching), I'm not sure what *real* use cases it aims for.

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<http://bugs.python.org/issue15651>
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