[issue33414] Make shutil.copytree use os.scandir to take advantage of cached is_(dir|file|symlink)

[Andrés Delfino]

Andrés Delfino <adelfino at gmail.com> added the comment:

I believe you are right about being conservative with changing working code, specially when there's no proof about performance being improved.

I think its best to close this ticket. I'd do it myself, but I know what resolution applies here.

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<https://bugs.python.org/issue33414>
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