[issue18415] Normalize single/double quote usage in importlib

[Roundup Robot]

Roundup Robot added the comment:

New changeset 33d379c2bb79 by Brett Cannon in branch 'default':
Issue #18415: Normalize what type of quotes are used with string
http://hg.python.org/cpython/rev/33d379c2bb79

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nosy: +python-dev

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18415>
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