Support determining whether a literal is truthy #8368
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This means types like Union[Literal[False], str] can be narrowed down more easily.
This was referenced May 14, 2020
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This means types like
Union[Literal[False], str]can be narrowed down more easily.One test had to be adjusted, because it started checking more aggressively whether a union could be simplified. I think that's ok, because it's doing the equivalent of simplifying
Union[Literal["foo"], str]tostr, which seems correct.