Python Class & object

1. What is a Class?

A class is a blueprint or template.

In simple words:
👉 A class describes what an object will have and do
👉 It does not create a real thing
👉 It only defines structure

Real-Life Example

Think of a house plan 🏠

• Plan = Class

• Real house = Object

2. What is an Object?

An object is a real instance created from a class.

In simple words:
👉 Object is a real thing
👉 It uses the class to work
👉 Many objects can be created from one class

3. Create a Simple Class

Example

4. Create an Object

Example

5. Class with Method (Function)

A function inside a class is called a method.

Example

6. What is self?

self refers to the current object.

In simple words:
👉 self means this object

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7. Class with __init__() (Constructor)

 

Example

8. Multiple Objects from One Class

Example

9. Modify Object Properties

Example

10. Delete Object or Property

Example

11. Simple Class Example (Student)

Example

12. Why Use Class & Object?

✔ Makes code reusable
✔ Keeps program organized
✔ Easy to understand
✔ Used in real projects

13. Common Beginner Mistakes

❌ Forgetting self

❌ Wrong.

❌ Calling Method Without Object

❌ Wrong.

14. Simple Practice Examples

Example 1: Car Class

Example 2: Calculator

Example 3: Bank Account

15. Summary (Python Class & Object)

✔ Class is a blueprint
✔ Object is a real instance
✔ self refers to object
✔ __init__() initializes data
✔ Core concept of OOP

📘 Perfect for Beginner eBook

This chapter is ideal for:

• Python beginner books

• School & college students

• Self-learners

If you want next, I can write:

• Inheritance

• Encapsulation

• Polymorphism

• Real OOP Projects

Just tell me 😊