Python OOP

sum.py

# arquivo soma.py
class Soma():
    def __init__(self, name: str) -> None:
        self.name = name
    
    def sum(self, a, b) -> int:
        return a + b
    
    def str_name(self) -> str:
        return self.name

obj = Soma("Sum")
print(obj.sum(8,9))
print(obj.str_name())