Are conditional type hints currently possible? #1251
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Consider the case when we have a table of pairs of types (cf. pandas-dev/pandas-stubs#262)
And I have a functon that takes as input an object of the form def convert(object: list[NumpyScalar]) -> list[PandasScalar]:How can one type hint this properly without writing a million |
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Replies: 1 comment
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No overload is only way today. You need a type level map operation which has briefly appeared in typing sig and while useful would likely be a complex feature and definitely require a pep. I think numpy dtype conversion/promotion rules is best use case for this. |
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No overload is only way today.
You need a type level map operation which has briefly appeared in typing sig and while useful would likely be a complex feature and definitely require a pep. I think numpy dtype conversion/promotion rules is best use case for this.