Python Variables

Variables

Variables are simply a container for storing values.

Create Variables

Python has no key for declaring variables, Variables are created when you assign a value to it.

a = 5
b = "Earth"

print(a)
print(b)

In Python do not need to declare the variables type, variable type automatically assigned when you will assign a value and variables types can be changed after assigning the value.

a = 5 # a is an integer type of variable
b = "Earth" # b is an string type of variable
c = 5.5 # c is an float type of variable

print(a)
print(b)
print(c)

Casting

You can declare the data types of a variables, by using casting. Python have built-in function for declaring the data type. There is lots of casting but we will see only about three.

• int() This is an Python built-in function used for declaring Integer Data Types.
• str() This Python str Function used to declare String Data Types.
• float() This is an float function used for declaring Float Data Types. This function also used for converting Integer to Float data types.

int() # This is an int function
str() # This is an str function
float() # This is an float function

How To Use Castings in Python

See here in this example we will learn how we can cast an data type by using python built-in function.

a = int(5) # We casting 5 as integer data types to 'a' variable
b = str('Earth') # We casting "Earth" as string data types to 'b' variable
c = float(5.5) # We casting 5.5 as float data types to 'c' variable


print(a)
print(b)
print(c)

Get Data Types

We will learn how to check or get the data types of variables. We will use type() function to check the data types.

a = 5

print(type(a))

Print Message in Python

print() this is an function for printing any message in human readable form.

print('Hello')
print(5)