[issue19944] Make importlib.find_spec load packages as needed

[Brett Cannon]

Brett Cannon added the comment:

Moving to importlib.util is fine by me. I put find_loader() to mirror import_module(), but honestly the former is much less used compared to the latter, so moving it to importlib.util makes sense.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19944>
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