[whimsicalism]

I disagree with your last line, especially for Optional (Union in python is basically useless IMO).

[folkrav]

Isn't `Optional[T]` just sugar for `Union[T, None]`?

[whimsicalism]

Touché. I guess a common pattern I find myself doing for Union types is having if statements checking if something is of a type using reflection. When checking if it is none, it is more elegant.