[issue28649] refleak in typing.py

[Ivan Levkivskyi]

Ivan Levkivskyi added the comment:

I think tearDown() is not necessary. But on the other hand it could be nice to have a method in tests to force cache clear. I would propose it not as a default, but as an opt-in to check that cache works well, or that a certain tested feature is "cache independent", etc.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28649>
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