Lesson 12 — Inheritance

Reuse via subclasses

A subclass is written class Dog(Animal): and gets every method of the base class for free. It can override a method by defining one with the same name — then the subclass version wins. Methods it does not override still come from the base class.

class Shape:
    def name(self):
        return "shape"
class Square(Shape):
    def name(self):
        return "square"

Why it matters: inheritance lets you share common behaviour and change only what is different.