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

[Andrés Delfino]

New submission from Andrés Delfino <adelfino at gmail.com>:

Right now we are using os.path.is(dir|file|symlink) in shutil.copytree, but taking advantage of os.scandir's is_(dir|file|symlink) seems the way to go.

I'll make a PR with to start the discussion with a proof of concept.

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components: Library (Lib)
messages: 316108
nosy: adelfino
priority: normal
severity: normal
status: open
title: Make shutil.copytree use os.scandir to take advantage of cached is_(dir|file|symlink)
versions: Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33414>
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