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no error when no argument in TypeGuard function #13199

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DetachHead opened this issue Jul 20, 2022 · 0 comments · Fixed by #14238
Closed

no error when no argument in TypeGuard function #13199

DetachHead opened this issue Jul 20, 2022 · 0 comments · Fixed by #14238
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feature priority-2-low topic-typeguard TypeGuard / PEP 647

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@DetachHead
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from typing import TypeGuard

def foo() -> TypeGuard[int]: ... # no error

playground
@DetachHead DetachHead added the bug mypy got something wrong label Jul 20, 2022
@AlexWaygood AlexWaygood added the topic-typeguard TypeGuard / PEP 647 label Jul 20, 2022
@JelleZijlstra JelleZijlstra added feature and removed bug mypy got something wrong labels Jul 20, 2022
@A5rocks A5rocks mentioned this issue Dec 3, 2022
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hauntsaninja pushed a commit that referenced this issue Jan 31, 2023
@A5rocks
More helpful type guards (#14238)
28c67cb 
Fixes #13199
Refs #14425
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feature priority-2-low topic-typeguard TypeGuard / PEP 647
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More helpful type guards A5rocks/mypy
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@JelleZijlstra @hauntsaninja @DetachHead @AlexWaygood