class Rectangle object def __init__ self self self property def perime

class Rectangle(object):
    def __init__(self, a, b):
        self.a = a
        self.b = b

    @property
    def perimeter(self):
        return 2 * (self.a + self.b)


class Square(Rectangle):
    def __init__(self, a):
        super(Square, self).__init__(a, a)

if __name__ == '__main__':
    rec = Rectangle(1, 2)
    print rec.perimeter

    sq = Square(2)
    print sq.perimeter