OOP Fundamentals

Object-oriented programming in Python, step by step — classes and objects, constructors and methods, encapsulation, inheritance and polymorphism, up to a capstone project. The course that turns scripts into professional code.

Lesson 0: Why Organize Code Into Objects At All?
Lesson 1: What is a class? Your first object
Lesson 2: __init__ — the constructor and attributes
Lesson 3: Methods — what objects can do
Lesson 4: Many objects, separate state
Lesson 5: __str__ — how an object prints itself
Lesson 6: Mini-capstone — BankAccount
Lesson 7: Class vs instance attributes
Lesson 8: Information hiding — the _x convention
Lesson 9: @property — controlled reading
Lesson 10: Setters & validation
Lesson 11: Inheritance — parent and child classes
Lesson 12: super() — extending the constructor
Lesson 13: Method overriding & polymorphism
Lesson 14: isinstance() and when to inherit at all
Lesson 15: Composition vs inheritance
Lesson 16: More magic methods — __eq__ and __len__
Lesson 17: dataclasses — less boilerplate
Lesson 18: Designing a class model
Lesson 19: Capstone I — the Pet Hotel
Lesson 20: Capstone II — extending with inheritance