[issue34616] implement "Async exec"

[Ned Deily]

Ned Deily <nad at python.org> added the comment:


New changeset eca18aac7b5952d23854d27dc8e502dfb0bb0505 by Ned Deily (Yury Selivanov) in branch 'master':
bpo-34616: Fix code style and unbreak buildbots (GH-13473)
https://github.com/python/cpython/commit/eca18aac7b5952d23854d27dc8e502dfb0bb0505


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nosy: +ned.deily

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