[issue20849] add exist_ok to shutil.copytree

[Éric Araujo]

Éric Araujo added the comment:

Contrary to makedirs, there could be two interpretations for exist_ok in copytree: a) if a directory or file already exists in the destination, ignore it and go ahead  b) only do that for directories.

The proposed patch does b), but the cp tool does a).  It’s not clear to me which is best.  Can you start a discussion on the python-ideas mailing list?

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nosy: +eric.araujo

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