Python inner classes inheritance from parent class

[Abedin]

Why 2 classes?

class Numbers:
    def __init__(self,a,b):
        self.sum = a + b
        self.prod = a * b
 
twoNumbers = Numbers(5,4)
 
print(twoNumbers.sum, twoNumbers.prod)

Thank you for the offered solution, but I am actually writing a more sophisticated code and I need to access the parent class attributes (not methods) within the child class. The snippet I posted is just an illustration of what I am trying to achieve. My actual code is very big and not suitable for posting here.