Python Variables
In this tutorial you will learn, about variables and variable assignments in Python programming.
Variables are used to store data, like string, numbers, date-time etc. When you create a variable, the interpreter will reserve some space in the memory to store value of variable. Value of a variable can change during the execution of a python program.
Python Variables
2018-02-17T18:24:30+05:30
2018-02-17T18:24:30+05:30
python variable declaration, python variable type, python variable name rules, python variable scope, python variables tutorial
In this tutorial you will learn how to create and use variables in Python with the live example.
Amit Arora
Amit Arora
Python Programming Language Tutorial
Python Tutorial
Programming Tutorial
Creating Variables
In Python, a variable does not need to be declared while creating or before adding a value to it. Python variables are usually dynamically typed, that is, the type of the variable is interpreted during run-time and you don't need to specify the type of a variable.
Example
The following program shows how to use string and integer type variables:
x = 10 # Integer variable y = "Hello World" # String variable # Displaying variables value print(x) print(y)
Get and Check Variable Type
The type() method is used to get the type of a created variable.
Example
This program shows how to check type of a variable:
var1 = 'Hello World' print(type(var1)) var2 = 100 if type(var2) == int: print('Integer')
Output
<class 'str'> Integer
Check if Variable Exist
The locals() usually used to check the existence of a local variable.
Example
var1 = 200 if 'var1' in locals(): print("Variable Exist")
Output
Variable Exist