[issue25996] Add support of file descriptor in os.scandir()

[STINNER Victor]

STINNER Victor added the comment:

Yeah, it was discussed when the PEP 471 was designed, but it was already hard to design os.scandir() without supporting fd as os.scandir() parameter.

It's more complex because we have to handle the lifetime of the file descriptor especially if it's exposed in a public attribute.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25996>
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