Always complain about invalid varargs and varkwargs #18207
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hauntsaninja
commented
Nov 28, 2024
| f(*(a,)) | ||
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| f(*4) # E: Expected iterable as variadic argument | ||
| f(a, *4) # E: Expected iterable as variadic argument |
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prior false negative
| f(**kwargs) # E: Argument after ** must be a mapping, not "Optional[Any]" | ||
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| def g(a: int) -> None: pass | ||
| g(a=1, **4) # E: Argument after ** must be a mapping, not "int" |
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prior false negative
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
hauntsaninja
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Nov 28, 2025
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