Python Identity Operators (Use, Syntax, and Examples)

Python | Identity operators: Here, we are going to learn about the various identity operators in Python with their usages, syntaxes, and examples. By IncludeHelp Last updated : December 18, 2023

Python Identity Operators

Python identity operators are used to perform the comparison operation on the objects i.e. these operators check whether both operands refer to the same objects (with the same memory location) or not.

Python Identity Operators: is, not is

Following are the identity operators,

Operator	Descriptions	Example
is	It returns True if both operands refer to the same objects; False, otherwise.	x is y
is not	It returns True if both operands do not refer to the same objects; False, otherwise.	x is not y

1. Python 'is' Operator

The "is" an identity operator which returns True if both operands refer to the same objects; False, otherwise.

Syntax

Below is the syntax of "is" operator:

x is y

Python 'is' Operator Example

# Python program to demonstrate the 
# example of identity operators

x = [10, 20, 30]
y = [10, 20, 30]
z = x

# Comparing the values using == operator
print("x == y: ", x == y)
print("y == z: ", y == z)
print("z == x: ", z == x)
print()

# Comparing the objects 
# whether they are referring 
# the same objects or not
print("x is y: ", x is y)
print("y is z: ", y is z)
print("z is x: ", z is x)
print()

Output

x == y:  True
y == z:  True
z == x:  True

x is y:  False
y is z:  False
z is x:  True

2. Python 'is not' Operator

The "is not" an identity operator which returns True if both operands do not refer to the same objects; False, otherwise.

Syntax

Below is the syntax of "is not" operator:

x is not y

Python 'is not' Operator Example

# Python program to demonstrate the 
# example of identity operators

x = [10, 20, 30]
y = [10, 20, 30]
z = x

# Comparing the values 
# using != operator
print("x != y: ", x != y)
print("y != z: ", y != z)
print("z != x: ", z != x)
print()

# Comparing the objects 
# whether they are referring 
# the same objects or not
print("x is not y: ", x is not y)
print("y is not z: ", y is not z)
print("z is not x: ", z is not x)
print()

Output

x != y:  False
y != z:  False
z != x:  False

x is not y:  True
y is not z:  True
z is not x:  False

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