How to check if a type is a combination of some other types

[mitar]

In one part of my code, where I am deciding how to convert a value to JSON, I do:

any(is_subclass(structural_type, typ) for typ in (str, int, float, bool))

What I realized is that I would be OK with all possible Union combinations of these as well. So if structural_type is Union[str, int] that should also pass this check. Do you have a suggestion how to do so, or a helper function which would already do this? So I wonder about complicated case like Union[str, Union[int, bool]] or something like that.

[Stewori]

Simply is_subtype(structural_type, Union[str, int, float, bool]) should do what you want if I understand your requirement correctly (otherwise, more context would be helpful).

Union[str, Union[int, bool]] is equivalent to plain Union[str, int, bool] (like Union[int] is equivalent to plainint) and I think pytypes handles this well (IIRC there are tests for it).

[mitar]

Oh, you are so right. Silly me. :-) Thanks!