tree 9b1613b2c8bdad0fd942222c07a72e90e8dd509e
parent 3a9ccee0e5dbf7d67f5ab79f6095755969db117c
author Brett Cannon <brettcannon@users.noreply.github.com> 1523056218 -0700
committer GitHub <noreply@github.com> 1523056218 -0700
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bpo-33169: Remove values of `None` from sys.path_importer_cache when invalidating caches (GH-6402)

An entry of None in sys.path_importer_cache represents a negative/missing finder for a path, so clearing it out makes sense.