[Python] Python: How to Type Hint a Class Argument in a Static Method Python? [duplicate]

Let's say I have a class Circle with the following definition:

class Circle:
def __init__(self, r, _id):
self.r = r
self.id = _id

def area(self):
return math.pi * (self.r ** 2)


I want to write a function that compares two circles and returns the id of the smallest one

def compare_circles(circle_1: Circle, circle_2: Circle) -> str:
if circle_1.r < circle_2.r:
return circle_1.id
else:
return circle_2.id


I would like to place this method as a static method on the class. (Is this a bad idea?)

class Circle:

def __init__(self, r, _id):
self.r = r
self.id = _id

def area(self):
return math.pi * (self.r ** 2)

@staticmethod
def compare_circles(circle_1: Circle, circle_2: Circle) -> str:
if circle_1.r < circle_2.r:
return circle_1.id
else:
return circle_2.id


However this does not work because the Circle object is not available to be type hinted. I have to remove the type hints in the method. Using a classmethod also does not work, as the cls argument is not available to the other method arguments.

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