[issue25596] Use scandir() to speed up the glob module

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Not this version of the path. It accumulates all scandir results in a list before yielding values. Otherwise globbing will consume a lot of open file descriptors and could leak them (see issue25994, issue25995).

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25596>
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