What is self called in python?

Last updated on Jul 13,2022 267.3K Views

Show

3 / 62 Blog from Python Fundamentals

If you are working with Python, there is no escaping from the word “self”. It is used in method definitions and in variable initialization. The self method is explicitly used every time we define a method. In this article, we will get into the depth of self in Python in the following sequence:

  • What is the use of self in Python?
  • Python Class self Constructor
  • Is self in Python a Keyword?

What is the use of Self in Python?

What is self called in python?

The self is used to represent the instance of the class. With this keyword, you can access the attributes and methods of the class in python. It binds the attributes with the given arguments. The reason why we use self is that Python does not use the ‘@’ syntax to refer to instance attributes. Join our Master Python programming course to know more. In Python, we have methods that make the instance to be passed automatically, but not received automatically.

Example:

class food():

# init method or constructor
def __init__(self, fruit, color):
self.fruit = fruit
self.color = color

def show(self):
print("fruit is", self.fruit)
print("color is", self.color )

apple = food("apple", "red")
grapes = food("grapes", "green")

apple.show()
grapes.show()

Output:

Fruit is apple
color is red
Fruit is grapes
color is green

Python Class self Constructor

self is also used to refer to a variable field within the class. Let’s take an example and see how it works:

class Person:

# name made in constructor
def __init__(self, John):
self.name = John

def get_person_name(self):
return self.name

In the above example, self refers to the name variable of the entire Person class. Here, if we have a variable within a method, self will not work. That variable is simply existent only while that method is running and hence, is local to that method. For defining global fields or the variables of the complete class, we need to define them outside the class methods.

Find out our Python Training in Top Cities/Countries

India USA Other Cities/Countries
Bangalore New York UK
Hyderabad Chicago London
Delhi Atlanta Canada
Chennai Houston Toronto
Mumbai Los Angeles Australia
Pune Boston UAE
Kolkata Miami Dubai
Ahmedabad San Francisco Philippines

Is self a Keyword?

self is used in different places and often thought to be a keyword. But unlike in C++, self is not a keyword in Python.

self is a parameter in function and the user can use a different parameter name in place of it. Although it is advisable to use self because it increases the readability of code.

Example:

class this_is_class:
def show(in_place_of_self):
print("It is not a keyword "
"and you can use a different keyword")

object = this_is_class()
object.show()

Output:

It is not a keyword and you can use a different keyword

With this, we have come to the end of our article. I hope you understood the use of self and how it works in Python.

Check out the Python Certification course by Edureka. This Training course is designed for students and professionals who want to be a Python Programmer. The course is designed to give you a head start into Python programming and train you for both core and advanced concepts.

Got a question for us? Please mention it in the comments section of this blog and we will get back to you as soon as possible or join our Python Training in Chennai Today..

Upcoming Batches For Python Certification Training Course

Course NameDate
Python Certification Training Course

Class Starts on 15th October,2022

15th October

SAT&SUN (Weekend Batch)
View Details
Python Certification Training Course

Class Starts on 12th November,2022

12th November

SAT&SUN (Weekend Batch)
View Details

What is self called in python?

Introduction to Business Analytics with R

Watch Now

What is self called in python?

Web Scraping And Analytics With Python

Watch Now

What is self called in python?

Application of Clustering in Data Science Using Real-Time Examples

Watch Now

What is self called in python?

The Whys and Hows of Predictive Modeling-II

Watch Now

What is self called in python?

Data Science : Make Smarter Business Decisions

Watch Now

What is self called in python?

3 Scenarios Where Predictive Analytics is a Must

Watch Now

What is self called in python?

Python Loops – While, For and Nested Loops in Python Programming

Watch Now

What is self called in python?

Python List, Tuple, String, Set And Dictonary – Python Sequences

Watch Now

What is self called in python?

Python Programming – Learn Python Programming From Scratch

Watch Now

What is self called in python?

Python Tutorial – All You Need To Know In Python Programming

Watch Now

What is self called in python?

Sentiment Analysis In Retail Domain

Watch Now

What is self called in python?

Python Classes – Python Programming Tutorial

Watch Now

What is self called in python?

Know The Science Behind Product Recommendation With R Programming

Watch Now

What is self called in python?

Business Analytics Decision Tree in R

Watch Now

What is self called in python?

Python Numpy Tutorial – Arrays In Python

Watch Now

What is self called in python?

Mastering Python : An Excellent tool for Web Scraping and Data Analysis

Watch Now

What is self called in python?

Difference Between Data Scientist and Data Analyst

Read Article

What is self called in python?

What is Overfitting In Machine Learning And How To Avoid It?

Read Article

What is self called in python?

Install Python On Windows – Python 3.X Installation Guide

Read Article

What is self called in python?

R Tutorial – A Beginner’s Guide to Learn R Programming

Read Article

What is self called in python?

Data Scientist Resume Sample – How To Build An Impressive Data Scientist Resume

Read Article

What is self called in python?

OpenCV Python Tutorial: Computer Vision With OpenCV In Python

Read Article

What is self called in python?

Python Pandas Tutorial : Learn Pandas for Data Analysis

Read Article

What is self called in python?

How to Implement Optical Character Recognition in Python

Read Article

What is self called in python?

What is Mutithreading in Python and How to Achieve it?

Read Article

What is self called in python?

Object Oriented Programming Python: All you need to know

Read Article

What is self called in python?

How To Implement Linear Discriminant Analysis in R?

Read Article

What is self called in python?

What is Supervised Learning and its different types?

Read Article

What is self called in python?

Cluster Analysis Steps in Business Analytics with R

Read Article

What is self called in python?

Top Reasons Why Business Analytics Is A Must For MBA Grads!

Read Article

Is self a variable in Python?

Self Is Here To Stay There is no explicit variable declaration in Python. They spring into action on the first assignment. The use of self makes it easier to distinguish between instance attributes (and methods) from local variables.

What is self In __ init __ Python?

The self in keyword in Python is used to all the instances in a class. By using the self keyword, one can easily access all the instances defined within a class, including its methods and attributes. init. __init__ is one of the reserved methods in Python. In object oriented programming, it is known as a constructor.