Your comment makes it seem like you haven't experienced Python types enough, or you wouldn't think it was so easy.
Oh trust me I did and I constantly slap on the wrists juniors who over-complicate their solutions to the problem :)
> Why would there exist a way in Python to conditionally import types, for the purpose of preventing cyclic imports, if cyclic imports weren't a problem?
Because it's easier to understand than the solution to cyclic imports without conditional imports.