[issue26252] Add an example to importlib docs on setting up an importer

[Brett Cannon]

Brett Cannon added the comment:

I added an example on how to register both a meta path and path entry finder. It's a rather simple example, but hopefully using the classes that importlib uses will help also point people towards the appropriate classes to learn about for their own needs.

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resolution:  -> fixed
stage: needs patch -> resolved
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue26252>
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