[issue20849] add exist_ok to shutil.copytree

[Alexander Mohr]

New submission from Alexander Mohr:

it would be REALLY nice (and REALLY easy) to add a parameter: exist_ok and pass this to os.makedirs with the same parameter name so you can use copytree to append a src dir to an existing dst dir.

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components: Library (Lib)
messages: 212691
nosy: thehesiod
priority: normal
severity: normal
status: open
title: add exist_ok to shutil.copytree
type: enhancement
versions: Python 3.3, Python 3.4, Python 3.5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20849>
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