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GH1043 Update _typing.pyi: add "cross" option to JoinHow #1044

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I haven't added tests since JoinHow doesn't seem to be tested in any case. Should I add some? Merge tests unimpacted.

@brzegorzTesco brzegorzTesco changed the title Update _typing.pyi: add "cross" option to JoinHow GH1043 Update _typing.pyi: add "cross" option to JoinHow Nov 21, 2024
Comment on lines +732 to +733
JoinHow: TypeAlias = Literal["left", "right", "outer", "inner", "cross"]
MergeHow: TypeAlias = JoinHow
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This fix is not correct, because JoinHow is used as the type of the join argument in the align() method.

The right fix is to change the typing of DataFrame.join() to use the existing MergeHow type.

You would then add a test like your example that shows that "cross" is accepted as a value for the how argument of DataFrame.join()

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[mypy] Dataframe.Join with "cross" option for "how" argument throws error even though it's valid
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