class Airthop(object):
    """ """
    def __init__(self, num1, num2):
        self.num1 = num1
        self.num2 = num2
    def add(self):
        return self.num1 + self.num2
    def sub(self):
        return self.num1 - self.num2
    def mul(self):
        return self.num1 * self.num2
    def div(self):
        return self.num1 / self.num2

class Inherit(Airthop):
    pass
    def add(self):
        return self.num1 + self.num2 +10

obj = Airthop(1, 2)
obj2 = Inherit(1, 6)
print(obj2.add())
print(obj.add())
print(obj.sub())
print(obj.mul())
print(obj.div())
    def kkkk(self):
    def kkkk(self):
print(obj2.kkkk())
print(obj.kkkk())
