Python OOP

What is OOP?

• OOP stands for Object-Oriented Programming.
• It is a programming approach where we organize programs using classes and objects.

Why Do We Use OOP?

• Organize code
• Reuse code
• Reduce code duplication
• Maintain large programs easily
• Represent real-world entities
• Improve code structure

What is a Class?

• A class is a blueprint or template used to create objects.

class Student:
    pass

• Student → Class

What is an Object?

• An object is an instance of a class.

class Student:
    pass
student1 = Student()

• Student → Class
• student1 → Object

Class vs Object

Class                             Object

Blueprint                     Real instance
Defines structure             Uses that structure
Logical entity                    Physical/runtime entity
Example: Student              Example: student1

Creating a Class

• We use the class keyword.

class Student:
    name = "Punitha"
    age = 22

• Student → Class
• name → Attribute
• age → Attribute

Creating an Object

• We create an object by calling the class.

class Student:
    name = "Punitha"
    age = 22
student1 = Student()
print(student1.name)
print(student1.age)

Output:
Punitha
22