Py Oop — Free Python Tutorial

TL;DR: Learn Py Oop in Python with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

Py Oop in Python

Object-Oriented Programming (OOP) models real-world entities as objects. A class is a blueprint; an object is an instance of that class. For example, "Student" is a class; "Arjun" is an object.

The __init__ method (constructor) runs automatically when you create an object. self refers to the current object instance. Attributes (self.name) store data; methods (def study()) define behavior.

OOP pillars: Encapsulation (bundle data + methods), Inheritance (child class reuses parent class), Polymorphism (same method name, different behavior), Abstraction (hide complexity).

class ClassName:
    def __init__(self, param):
        self.attr = param       # attribute

    def method(self):
        return self.attr        # method

obj = ClassName(value)  # create object
obj.method()            # call method

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