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

[Stefan Behnel]

Stefan Behnel <stefan_ml at behnel.de> added the comment:

Nice, I really like this.

Apart from the usual bit of minor style issues, I couldn't see anything inherently wrong with the PR, but I'll leave the detailed reviews to those who'd have to maintain the code in the future. :)

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nosy: +scoder

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