Python Classes and Objects

Python is an interpreted high-level, structural, and object-oriented programming language. Since it is object-oriented, the concept of classes and objects is well-discussed and implemented. A class is the basis of object-oriented programming in Python. In this tutorial, we will learn about Classes and Objects in Python. A class is a template for an object, whereas an object is an instance of a class.

What is a class in Python?

As discussed above, a class is a blueprint for objects in Python. We can easily create a class like this:

Class Definition in Python

The class keyword is used to create a class in Python. The class is a reserved word in Python. In the below example, we will see how to create a class in Python:


What is an object in Python?

An object is an instance of a class i.e. object is created from a class. An object represents real-life entities, for example, a Bike is an object. The object has State, Behavior, and Identity:

  • Identity: Name of Bike
  • State (Attributes): The data of the object Bike i.e. Color, Model, Weight, etc.
  • Behavior (Methods): Behavior of object Bike like to Drive, Brake

Let us now see the representation, with Bike as an object:

Python Objects

How to Create an Object in Python

Considering the above example of classes in Python, we can easily create an object.


Now, we can easily create a sample Python program on Classes and Objects. Let’s see.

Example – Python Classes and Objects


Python _init_() Function

The classes in Python have __init__() function. Like constructors in Java, the __init__() function executes when the object gets created. Using this method, easily assign values to object properties.

Let us understand with an example, wherein we will create a class Students and values will be assigned using the __init__(). We have also created object functions:


Above, we have also used the self parameter. The class methods in Python have the first parameter as self to access the class variable. A method with no argument should also have an argument self However, we can give it any name. It is not mandatory to use the word self.

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