Python Class Variable vs Instance Variable: A Complete Guide
Python is renowned for its readability and powerful object-oriented features. Day to day, in this article, we’ll demystify python class variable vs instance variable through clear definitions, practical code examples, and the science behind Python’s memory management. Understanding this difference is not just a rite of passage for beginners; it is a fundamental concept that determines how data is shared, modified, and preserved across your code. Because of that, at the heart of every Python program involving objects lies the distinction between class variables and instance variables. Whether you’re preparing for a technical interview or building a solid application, mastering these concepts will elevate your programming proficiency Nothing fancy..
Steps: Class Variables vs Instance Variables in Action
To truly grasp how these variables behave, nothing beats running code yourself. Below are two minimal examples that illustrate the core difference. Follow along, modify the values, and observe the output Not complicated — just consistent. Simple as that..
Class Variables: Shared Across All Instances
A class variable is defined directly in the class body, outside any method. It belongs to the class itself, not to any specific object. Every instance of the class shares the same copy of a class variable. If one instance modifies it, the change is visible to all other instances.
class Car:
kind = "vehicle" # This is a class variable
def __init__(self, model):
self.model = model #