[issue38407] Add docstrings for typing.SupportsXXX classes

[miss-islington]

miss-islington <mariatta.wijaya+miss-islington at gmail.com> added the comment:


New changeset 7162440a7247f77d22cd937143f358fd5ac85af4 by Miss Islington (bot) in branch '3.8':
bpo-38407: Add docstrings for typing.SupportsXXX classes. (GH-16644)
https://github.com/python/cpython/commit/7162440a7247f77d22cd937143f358fd5ac85af4


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nosy: +miss-islington

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<https://bugs.python.org/issue38407>
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