SuperSingleInheritance.py

class Rectangle:
    def __init__(self, length, width):
        self.length = length
        self.width = width

    def area(self):
        return self.length * self.width

    def perimeter(self):
        return 2 * self.length + 2 * self.width

# class Square:
#     def __init__(self, length):
#         self.length = length

#     def area(self):
#         return self.length * self.length

#     def perimeter(self):
#         return 4 * self.length


# Here we declare that the Square class inherits from the Rectangle class
# class Square(Rectangle):
#     def __init__(self, length):
#         super().__init__(length, length)

# class Cube(Square):
#     def surface_area(self):
#         face_area = super().area()
#         return face_area * 6

#     def volume(self):
#         face_area = super().area()
#         return face_area * self.length

# Super() with Parameters
class Square(Rectangle):
    def __init__(self, length):
        super(Square, self).__init__(length, length)


class Cube(Square):
    def surface_area(self):
        face_area = super(Square, self).area()
        return face_area * 6

    def volume(self):
        face_area = super(Square, self).area()
        return face_area * self.length


square = Square(4)
print('Square: %i' % square.area())

rectangle = Rectangle(2, 4)
print('Rectangle: %i' % rectangle.area())

cube = Cube(3)
print('Cube: %i' % cube.surface_area())
# print('Cube: %i' % cube.area())