Python id() function with Examples

by Online Tutorials Library July 22, 2022

Python id() Function

Python id() function returns an identity of an object. This is an integer which is guaranteed to be unique. This function takes an argument an object and returns a unique integer number which represents identity. Two objects with non-overlapping lifetimes may have the same id() value.

Signature

Parameters

object : It is an object of which id is to be returned.

Return

It returns a unique integer number.

Let’s see some examples of id() function to understand it’s functionality.

Python id() Function Example 1

  # Python id() function example  # Calling function  val = id(“Tutoraspire”) # string object  val2 = id(1200) # integer object  val3 = id([25,336,95,236,92,3225]) # List object  # Displaying result  print(val)  print(val2)  print(val3)  

Output:

139963782059696  139963805666864  139963781994504

Python id() Function Example 2

  # Python id() function example  class Student:      def __init__(self, id, name):          self.id = id          self.name = name            student = Student(101,”Mohan”)          print(student.id)  print(student.name)  # Calling function  val = id(student) # student class object  # Displaying result  print(“Object id:”,val)  

Output:

101  Mohan  Object id: 140157155861392

Python id() Function Example 3

  # Python id() function example  l1 = [1,2,3,4]  l2 = [1,2,3,4]  l3 = [3,5,6,7]  # Calling function  id1 = id(l1)  id2 = id(l2)  id3 = id(l3)  # Displaying result  print((l1==l2),(l1==l3))  # Objects with the same values can have different ids  print((id1==id2),(id1==id3))  # l1 and l2 returns True, while id1 and id2 returns False  

Output:

True False  False False

Next TopicPython Set

Python id() function with Examples

Python id() Function

Signature

Parameters

Return

Python id() Function Example 1

Python id() Function Example 2

Python id() Function Example 3

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