[issue15275] isinstance is called a more times that needed in ntpath

[Ezio Melotti]

Ezio Melotti <ezio.melotti at gmail.com> added the comment:

Have you tried doing some benchmarks before and after the patch?
If this patch is applied I think it would be good to change posixpath too.
Also make sure that the changes you made are covered by the tests.

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nosy: +ezio.melotti
stage:  -> patch review
type:  -> performance
versions: +Python 3.4 -Python 3.3

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