1.11 Inheritance, Encapsulation, and Polymorphism

1.11 Inheritance, Encapsulation, and Polymorphism

After this unit you will: be able to tell apart the three most commonly confused concepts of OOP.

Key points

Concept	Meaning	Example in this lesson
Inheritance	A child class reuses everything from its parent class and can add to it or override it (an "is-a" relationship)	class Dog(Animal)
Encapsulation	Protecting internal data from being modified arbitrarily	self.__balance + deposit()
Polymorphism	The same method name, different behavior depending on the object	speak() of Dog, Cat, Cow

Use super() to extend a parent class's method rather than replace it entirely.