calling a function from class in python - different way

Question

EDIT2: Thank you all for your help! EDIT: on adding @staticmethod, it works. However I am still wondering why i am getting a type error here.

I have just started OOPS a

Answer 1

You need to have an instance of a class to use its methods. Or if you don't need to access any of classes' variables (not static parameters) then you can define the method as static and it can be used even if the class isn't instantiated. Just add @staticmethod decorator to your methods.

class MathsOperations:
    @staticmethod
    def testAddition (x, y):
        return x + y
    @staticmethod
    def testMultiplication (a, b):
        return a * b

docs: http://docs.python.org/library/functions.html#staticmethod