In this tutorial, we will learn about variables in Python. we will also discuss to define a variable, assign a value to variables in Python.
What is Variable:
- In Python, variables are a memory location.
- It can store values like numbers and text.
- The value of a variable can be changed.
- The variable is always assigned with the equal(=) sign.
Example
x=10
y="Learn Python"
print(x)
print(y)
Python is a dynamically typed language, so, you need not to declare type of a variable.
Variable Assignment:
In Python, the variable assignment can be done by using equal(=) symbol. One or more values can assign in variables.
We can assign a single value to a variable.
#single value assignment in a variable
n=10
print(n)
We can assign multiple values to a single variable.
#multiple values assignment in a variable
n=10,20,30
print(n)
And we can assign multiple values to multiple variables.
#multiple values assignment in multiple variables
a,b,c=10,20,30
print(a)
print(b)
print(c)
Rules for Naming Variables
- The variable name can be a combination of letters, numbers, and underscore.
- The first character of a variable name should not be a number, it must start with a character or underscore.
- A variable name can have both uppercase and lowercase or a combination of both cases.
- Variable name should not be a reserved keyword(predefined word in Python).
- Name of the variable should be meaningful.
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