https://github.com/sag333ar/learn_python

Learn Python Basics Together 🚀 | Day 7

Welcome back to our Python learning series!

In today's lesson, we dive deeper into Object-Oriented Programming (OOP) by learning three essential concepts:

✅ Inheritance
✅ Polymorphism
✅ Encapsulation

These concepts are used in almost every real-world Python application and are fundamental for writing clean, reusable, and maintainable code.

This video is suitable for:

Python Beginners
Students learning programming
Anyone interested in Object-Oriented Programming (OOP)

Language: English

Topics Covered

✅ What is Inheritance?
✅ Creating Parent and Child Classes
✅ Reusing Code Through Inheritance
✅ Constructor (__init__) in Parent and Child Classes
✅ Calling Parent Class Methods using super()
✅ What is Polymorphism?
✅ Method Overriding in Python
✅ What is Encapsulation?
✅ Creating Private Variables using __
✅ Getter and Setter Methods
✅ Updating Private Variables Safely

What We Built

To understand OOP concepts, we created:

🚗 A Vehicle class containing:

Model
Maximum Speed

🚙 A Car class inheriting from Vehicle with an additional property:

Fuel Type

Using this example, we learned how to:

Reuse existing code
Extend functionality
Override methods
Protect internal data using encapsulation

Important Learning

Some key takeaways from this video:

👉 Inheritance helps us avoid writing duplicate code.

👉 Polymorphism allows child classes to customize the behavior of parent class methods.

👉 Encapsulation protects important data by exposing only the methods needed to access or modify it.

These are core principles of Object-Oriented Programming and are widely used in software development.

Exercise for You

Try these exercises:

✅ Create a Bike class that inherits from Vehicle.

✅ Add a new property such as:

Gear Count
Engine Capacity
Electric or Petrol

✅ Override the showInfo() method.

✅ Create getter and setter methods for one private variable.

Share your implementation or questions in the comments!

Tools Used

Python
VS Code

About This Series

This beginner-friendly Python series is designed to help you learn by writing code, experimenting with examples, and understanding concepts step by step.

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