colour.hints.Type

colour.hints.Type

Deprecated alias to builtins.type.

builtins.type or typing.Type can be used to annotate class objects. For example, suppose we have the following classes:

class User: ...  # Abstract base for User classes
class BasicUser(User): ...
class ProUser(User): ...
class TeamUser(User): ...

And a function that takes a class argument that’s a subclass of User and returns an instance of the corresponding class:

def new_user[U](user_class: Type[U]) -> U:
    user = user_class()
    # (Here we could write the user object to a database)
    return user

joe = new_user(BasicUser)

At this point the type checker knows that joe has type BasicUser.

alias of Type