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

[Eric Snow]

Eric Snow added the comment:

The more I think about it the more I think there needs to be a harder separation between the import system proper and the path-based subsystem.  I hadn't really thought of it this way until the discussion of the last few days, but it has really clicked in my mind.

The new "import system" in the language reference already does a pretty good job of this.  I'll try to get a patch up in the next few days that shows what I mean.

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