8000 False positive error? · Issue #5835 · python/mypy · GitHub
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False positive error? #5835

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oriontvv opened this issue Oct 24, 2018 · 1 comment
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False positive error? #5835

oriontvv opened this issue Oct 24, 2018 · 1 comment

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@oriontvv
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oriontvv commented Oct 24, 2018 •
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I see error for code:

def func(choice: str, default: str='y') -> bool:
    values = ('yes', '') if default == 'y' else ('yes',) # error: Unsupported right operand type for in ("object")
    # values = ('yes', '') if True else ('yes',) # ok (!)
    return choice in values

Is it a bug? mypy version is 0.641
@ilevkivskyi
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This is a known bug, duplicate of #4975.

Workaround is to use lists instead of tuples (or use # type: ignore on that line to silence mypy).

@liangosc liangosc mentioned this issue Nov 15, 2019
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@ilevkivskyi @oriontvv
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