Python different between Function and OOP (class and object)

def add(x, y):    return x + ydef multi(x, y):    return x * yprint(add(20, 200))print(multi(22, 40))

class do_match:    def __init__(self, val1, val2):        self.val1 = val1        self.val2 = val2    def add(self):        return self.val1 + self.val2    def multi(self):        return self.val1 * self.val2ob = do_match(2, 40)print(ob.multi())print(ob.add())