What are Python variables with example -thefreegyan

 

Variable in Python

Variables definition

Variables are boxes for storing information values.

Creating Variables

Python has no command for putting forward a variable.

A variable is created the instant you first assign a cost to it.

Example:

x = 5

y = "John"

print(x)

print(y)

 x is a variable ok.

Variable names 

A variable can have a short name (like x and y) or a more descriptive name (age, autoname, total volume) Rules for Python variables: A variable name must start with a letter or the underscore character A Variable name cannot start with a number beginA variable name can only contain alphanumeric characters and underscores (A-z, 0-9 and _). Variable names are case sensitive (age, Age and AGE are three different variables)

Example:

myvar = "John"

my_var = "John"

_my_var = "John"

myVar = "John"

MYVAR = "John"

myvar2 = "John"

print(myvar)

print(my_var)

print(_my_var)

print(myVar)

print(MYVAR)

print(myvar2)

Many values ​​for multiple variables

Python allows you to assign values ​​to multiple variables in one line:

Example:

x, y, z = "Orange", "Banana", "Cherry"

print(x)

print(y)

print(z)

One value for multiple variables

And you can assign the same value to multiple variables in one line:

Example:

x = y = z = "Orange"

print(x)

print(y)

print(z)

Unpacking a Collection

If you have a collection of values ​​in a list, tuple, etc. Python allows you to extract the values ​​into variables. This is called unpacking.

Example:

fruits = ["apple", "banana", "cherry"]

x, y, z = fruits

print(x)

print(y)

print(z)

Print variables

Python's print() function is often used to print variables.

Example:

x = "Python is awesome"

print(x)

Global Variables

Variables  created outside of a function (as in all  the examples above) are called global variables. Global variables can be used by anyone, both inside and outside of functions.

Example:

x = "awesome"

def myfunc():

  print("Python is " + x)

myfunc()