[issue46395] `Concatenate` is not covered to be a return type in `test_typing`

[Nikita Sobolev]

Change by Nikita Sobolev <mail at sobolevn.me>:


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keywords: +patch
pull_requests: +28822
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/30618

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue46395>
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