Python id() Function

Returns a unique id for the specified object. This is useful to determine whether two values are in fact the same object.

Syntax

Python

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id(object)

Parameters

Parameter	Description
`object`	Required. The object for which to return the id

Example

Python

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a = 5
b = 5
print(f'Is object a the same as object b: {id(a) == id(b)}')

class Person:
    pass

aPerson = Person()
anotherPerson = Person()

# Assign aPerson to bPerson
bPerson = aPerson

print(f'Is aPerson the same object as bPerson: {id(aPerson) == id(bPerson)}')
print(f'Is aPerson the same object as anotherPerson: {id(aPerson) == id(anotherPerson)}')

Output

Is object a the same as object b: True
Is aPerson the same object as bPerson: True
Is aPerson the same object as anotherPerson: False