Force child class to override parent's methods

Question

Suppose I have a base class with unimplemented methods as follows:

class Polygon():
    def __init__(self):
        pass

    def perimeter(self):
        pa         


        

Answer 1

That's exactly what NotImplementedError are used for :)

In your base class

def area(self):
    raise NotImplementedError("Hey, Don't forget to implement the area!")