no_confusion_annotation_mypy.py

from typing import Union
from typing import Type


class A():
    a: int = 0
    b: int = 0


class B():
    a: int = 0
    b: int = 0


def a_function(variable: Union[A, B]):
    print("class provided is " + str(variable))


my_shortcut_union_type = Type[Union[A, B]]


def a_function_(variable: my_shortcut_union_type):
    print("provided is " + str(variable))


a_function_(A)  # Okay
a = A()
a_function(a)  # OKAY