[issue10049] Add a "no-op" (null) context manager to contextlib (Rejected: use contextlib.ExitStack())

[Albert Zeyer]

Albert Zeyer <albzey at googlemail.com> added the comment:

Note that this indeed seems confusing. I just found this thread by search for a null context manager. Because I found that in TensorFlow they introduced _NullContextmanager in their code and I wondered that this is not provided by the Python stdlib.

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nosy: +Albert.Zeyer

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