Python Identity Operators

Python | Identity operators: Here, we are going to learn about the various identity operators in Python with their usages, syntaxes, and examples.
Submitted by IncludeHelp, on May 31, 2020

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.

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

Syntax:

    operand1 is operand2
    operand1 is not operand2

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

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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