What is the 'cls' variable used for in Python classes?

Asked by Last Modified  

2 Answers

Learn Python

Follow 1
Answer

Please enter your answer

cls in Python holds the reference of the class. It is passed as the first argument to every class methods (methods with @classmethod decorator) by Python itself. class MyClass: @classmethod def what_is_cls(cls): print(cls) MyClass().what_is_cls() #outputs <class '__main__.MyClass'>It is important...
read more
cls in Python holds the reference of the class. It is passed as the first argument to every class methods (methods with @classmethod decorator) by Python itself. class MyClass: @classmethod def what_is_cls(cls): print(cls) MyClass().what_is_cls() #outputs <class '__main__.MyClass'>It is important to note that self and cls are not reserved keywords. They are just naming conventions in Python. read less
Comments

IT professional but interested in teaching english and hindi

cls accepts the class Person as a parameter rather than Person's object/instance. Now, we pass the method Person. printAge as an argument to the function classmethod . This converts the method to a class method so that it accepts the first parameter as a class (i.e. Person).
Comments

Related Questions

I am from ECE background, so I have no programming background so is it difficult to learn python n get a job as a fresher, and which combination best with python to learn? Currently, am in the networking domain, pls suggest me.
Good question and I teach a lot of students from non-CS background who want to shift their career to computer science. Even though you are from a non-CS background and have no programming experience before,...
Vijaykumar
0 0
7
What is the best python institute
All institutes are best, but you should check with the instructor, how will teach and guide you
Dinesh
While teaching IT Student (MCA / BCA / BTech), I found most of the students are not having good programming skills but they are still running behind to learn .NET / PHP / PYTHON / ANDROID / JAVA. Why is it so? What we should do better to improve a sound programming skills among most of IT Students?
on college days they r learning c,c++ and following faculties are also giving a road map of "programming means" thease languages only , even these are the languages are familier , where you justify them...
Amit Kumar
What does // mean in python?
In Python, `//` is the floor division operator, which divides two numbers and returns the largest integer less than or equal to the result. For example, `7 // 2` returns `3`, as it performs division and rounds down to the nearest whole number.
Annu
0 0
5
I am web developer with HTML and CSS knowledge, want to move a step ahead in programming web/desktop/mobile applications, which language is better, Python, Java or C#?
With knowledge of only HTML and CSS, Java and C# would be very difficult to catch up. Choose Python not just because it is easy but more relevant when combined with Django web framework. Even job opening...
Thomas

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Python Programming
Python is a widely used general-purpose, high-level programming language. This is an Open Source Software and its source code is available with a license in which the Copyright holder provides the rights...

Decorator Introduction
A decorator takes in a function, adds some functionality and returns it. Functions can be passed as arguments to another function like map, filter and reduce Function that take other functions as arguments...

Multiple Decorators
#Multiple decorators can be chained in Python.#A function can be decorated multiple times with different (or same) decorators.#We simply place the decorators above the desired function. def star(func):...

Top Programming Languages 2017: Every Beginner Should Learn
Every year a plethora of job opportunities are being created for skilled programmers. So if you are thinking of honing your coding skills it is really a bright idea. But with so many programming languages...

Decorators In Python
A decorator takes in a function, adds some functionality and returns it. Functions and methods are called callable as they can be called. Any object which implements the special method __call__() is...

Recommended Articles

Python is one of the most popular programming languages in the world. It is general-purpose, object oriented, high-level programming language used in a number of programming fields. Python is a great programming language to learn as it will introduce you to the world of programming. If you are from the technical background...

Read full article >

Business Process outsourcing (BPO) services can be considered as a kind of outsourcing which involves subletting of specific functions associated with any business to a third party service provider. BPO is usually administered as a cost-saving procedure for functions which an organization needs but does not rely upon to...

Read full article >

Applications engineering is a hot trend in the current IT market.  An applications engineer is responsible for designing and application of technology products relating to various aspects of computing. To accomplish this, he/she has to work collaboratively with the company’s manufacturing, marketing, sales, and customer...

Read full article >

Hadoop is a framework which has been developed for organizing and analysing big chunks of data for a business. Suppose you have a file larger than your system’s storage capacity and you can’t store it. Hadoop helps in storing bigger files than what could be stored on one particular server. You can therefore store very,...

Read full article >

Looking for Python Training classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you