[Python] Subclass in type hinting

I want to allow type hinting using Python 3 to accept sub classes of a certain class. E.g.:

class A:
pass

class B(A):
pass

class C(A):
pass

def process_any_subclass_type_of_A(cls: A):
if cls == B:
# do something
elif cls == C:
# do something else


Now when typing the following code:

process_any_subclass_type_of_A(B)


I get an PyCharm IDE hint

Expected type A, got Type instead.


How can I change type hinting here to accept any subtypes of A?

According to PEP 484 ("Expressions whose type is a subtype of a specific argument type are also accepted for that argument."), I understand that my solution (cls: A) should work?

Continue reading...