Computer Science - Object-Oriented Programming - Polymorphism - Polymorphism in Practice

5 steps. Step 1 'What is Polymorphism?': Poly = many, morph = forms. Same interface, different implementations. You call .area() on ANY shape - each calculates differently. Step 2 'Method Overriding': class Shape: def area(self): pass. class Circle(Shape): def area(self): return 3.14 * self.r**2. cl