Significantly improve `shutil.copytree`?

Hi, I’m not the standard library developer, but you might consider creating a PR. It could be useful to discuss this with the stdlib developer through code comments.

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I make an issure on github: Improve speed of shutil.copytree · Issue #124117 · python/cpython · GitHub

Plan here.

Change shutil.copytree into shutil.single_thread_copytree

Add async copytree.

Add multithreaded copytree

Add zip copytree or other ways

All the version was been discussed. Could someone make a PR?

To package your work you would raise the PR I assume?