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Python: id() function

id()

The id() function is used to get the identity of an object.

The identity is a unique integer for that object during its lifetime. This is also the address of the object in memory.

Version:

(Python 3.2.5)

Syntax:

id(object)

Parameter:

Name Description Required /
Optional
object An object, int, float, str,list, dict, tuple etc. Required

Example: Python id() function

print('id of 6 =',id(6))

x = 5
print('id of x =',id(x))

y = x
print('id of y =',id(y))

z = 5.0
print('id of z =',id(z))

Output:

id of 6 = 10914528
id of x = 10914496
id of y = 10914496
id of z = 140486394610168   

Pictorial Presentation:

Python: Built-in-function - id() function

Python Code Editor:

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Python: Tips of the Day

How do I check if a list is empty?

For example, if passed the following:

a = []
if not a:
  print("List is empty")

Ref: https://bit.ly/2A4JXx9