Inheritance and Polymorphism

Problem Statement

Implement a class hierarchy for shapes.

Background

Inheritance allows classes to share behavior:

class Child(Parent):
    def __init__(self):
        super().__init__()

Your Task

Create an inheritance hierarchy:

1. Base class Shape with:

   • name attribute
   • area() method (returns 0)
   • str returning "{name}: area={area}"

2. Rectangle(Shape) with:

   • Constructor taking width and height
   • area() returning width * height

3. Circle(Shape) with:

   • Constructor taking radius
   • area() returning π * radius²