[issue15502] Meta path finders and path entry finders are different, but share an ABC

[Eric Snow]

Eric Snow added the comment:

Good points, Brett.  While I still favor my posted patch, wouldn't Nick's commit still be okay (once invalidate_cache() is added appropriately)?  Or would it be confusing to people to have this "Finder" class that no one is actually supposed to use?

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<http://bugs.python.org/issue15502>
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