👨‍👦 Day 19: Inheritance in Python — Reusing Power, the Smart Way

 “Why build everything from scratch, when you can inherit what already works?”

Have you ever noticed how kids inherit traits from their parents — like curly hair, eye color, or even a bad joke habit? 😅
Similarly, in Python, classes can inherit properties and behaviors from other classes.
This makes our code reusable, organized, and scalable.

Let’s break it down with real-life examples and clean code. 🧠

                                            

🌳 What is Inheritance?

Inheritance allows a class (child class) to use the properties and methods of another class (parent class).
This avoids repetition and promotes cleaner code.

🧱 Parent and Child Classes

Here’s a simple example:

                                    

The Dog class inherited the speak() method from Animal.
But it also has its own method bark().

📐 Real-life Analogy

Think of a base Vehicle class with general features like engine, fuel, start.
Then you can create child classes like Car, Bike, Bus — all inherit the basics and add their own unique features.

🧬 Types of Inheritance in Python

Python supports:

1. Single Inheritance – One child, one parent

2. Multiple Inheritance – One child, multiple parents

3. Multilevel Inheritance – Child of a child

4. Hierarchical Inheritance – One parent, many children

🟢 Single Inheritance

        

                                    

                      

     

🔵 Multiple Inheritance

    

                            

Python uses Method Resolution Order (MRO) to decide which parent to pick when both have same method.  

🔁 Overriding Methods

You can redefine parent methods in child class using the same name:            

                            

🪜 Multilevel Inheritance

                              

🧠 Why Use Inheritance?

• Code reuse

• Avoid duplication

• Logical class structure

• Easy maintenance and updates

✅ Key Takeaways

• Inheritance allows one class to access another’s properties and methods
• Use class Child(Parent): to inherit
• Supports single, multiple, multilevel, hierarchical
• You can override parent methods in child
• Python uses MRO when multiple parents have same method

🚀 Challenge Time

Create a class Employee with method work().

Create a child class Manager with method manage_team().
Let Manager use both methods.

Let’s test your inheritance power now 💪

Keep This In Mind:

                              "In code, as in life, we often inherit more than just the name — we inherit behaviors, values, and responsibilities."