[issue33671] Efficient zero-copy for shutil.copy* functions (Linux, OSX and Win)

[STINNER Victor]

STINNER Victor <vstinner at redhat.com> added the comment:

> Thanks Gianpaolo for pushing for this. Great job.

I concur: great job! Cool optimization.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33671>
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