[issue36972] Add SupportsIndex

[Ivan Levkivskyi]

Ivan Levkivskyi <levkivskyi at gmail.com> added the comment:


New changeset 4c7a46eb3c009c85ddf2eb315d94d804745187d4 by Ivan Levkivskyi (Paul Dagnelie) in branch 'master':
bpo-36972: Add SupportsIndex (GH-13448)
https://github.com/python/cpython/commit/4c7a46eb3c009c85ddf2eb315d94d804745187d4


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nosy: +levkivskyi

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