[issue20784] 'collections.abc' is no longer defined when collections is imported

[Larry Hastings]

Larry Hastings added the comment:

I'm pretty sure that if you import "x", there are zero guarantees that "x.y" will work.  The offical line is that you must explicitly import all the deepest submodules you use.  So I don't think this is even a bug.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20784>
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