Inheritance, Polymorphism, Duck Typing (Beginner Friendly) - Python OOP Tutorial #20

Learn Python inheritance and polymorphism in this beginner-friendly tutorial! In this lesson, you will learn: ✅ Inheritance to extend parent classes ✅ super().__init__() to reuse parent setup ✅ Method overriding to customize behavior ✅ super().method() to extend parent methods ✅ isinstance() and issubclass() for type checking ✅ Polymorphism - same interface, different behavior ✅ Polymorphic functions that work on any subclass ✅ Duck typing - if it has the method, it works ✅ Combining inheritance with list comprehensions ✅ Mini Project: Employee System with polymorphic bonuses 🕐 Timestamps: 0:00 - Introduction 0:22 - Inheritance Explained 0:46 - Inheritance Demo 4:14 - Polymorphism Explained 4:38 - Polymorphism Demo 7:30 - Employee System Explained 7:54 - Employee System Demo 11:14 - Recap 11:49 - End 💻 Source Code: https://github.com/GoCelesteAI/python_inheritance_polymorphism 📚 Code from this lesson: # Inheritance class Vehicle: def __init__(self, make, model, year): self.make = make self.model = model self.year = year class Car(Vehicle): def __init__(self, make, model, year, doors): super().__init__(make, model, year) self.doors = doors # Polymorphism class Shape: def area(self): return 0 class Circle(Shape): def area(self): return math.pi * self.radius ** 2 # Duck typing works without inheritance shapes = [Circle(5), Rectangle(4, 6), CustomShape("X", 42)] for s in shapes: print(s.area()) 🔗 Previous: Lesson 19 - Classes & Objects 🔗 Next: Lesson 21 - Error Handling & Exceptions #Python #PythonTutorial #LearnPython #Programming #OOP #Inheritance #Polymorphism #PythonBasics Tags Python, Python tutorial, Python for beginners, learn Python, inheritance, polymorphism, super, isinstance, duck typing, OOP, method overriding, Python basics, CelesteAI Category Education