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Variables In Python

In this article, we will discuss variables in python.

What Are The Variables?

Variables in a programming language are the container for storing the value of different data types.

How To Declare A Variable?

In python, you can declare variables by: -

Specifying the variable name
Followed by assignment operator i.e., ‘=’
Followed by value

Here is an example: -

name = "gyan"
age = 30

Multiple Assignments Of Variables In Python

In Python, we can do multiple assignments of variables. Consider the following example: -

x= y = z = 2

print(x,y,z)

Run the above code and you will get the following output: -

Picture showing the output of Multiple assignment of variables in python

All the variables are pointing to the same memory location. Now change the above code to

x= y = z = 2
x = x + 1
print(x,y,z)

The output will be

Here, we are adding the value of variable x with 1 and then assigning it to variable x. During reassignment, the value of a variable is stored in another memory location.

Declaring Multiple Variables In One Line

In python, you can declare multiple variables in single lines. Please check the code below

width, height = 20,40

print("width:",width)
print("height:",height)

Now the above code and you will get the following output.

Picture showing the output of Declaring multiple variables in one line

Rules Of Creating Variables

Here are the rules for creating variables in python

Variable names are case-sensitive
Variable names should only contain alphabet, numbers, and underscore
Keywords should not be used as the variable name
Variable names should start with the alphabet or underscore

Posted By -	Karan Gupta

Posted On -	Thursday, January 31, 2019

Updated On -	Tuesday, March 26, 2019

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