[3.9] bpo-42345: Fix three issues with typing.Literal parameters (GH-23294)#23335

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miss-islington merged 1 commit intopython:3.9from

uriyyo:backport-f03d318-3.9

Nov 17, 2020

Commits on Nov 17, 2020

[3.9] bpo-42345: Fix three issues with typing.Literal parameters (GH-23294)
uriyyo
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