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Python Program to Find and Print Address of Variable

  • Last Updated : 31 Aug, 2021

In this article, we are going to see how to find and print the address of the Python variable. 

It can be done in these ways:

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  • Using id() function
  • Using addressof() function
  • Using hex() function

Method 1: Find and Print Address of Variable using id()

We can get an address using id() function, id() function gives the address of the particular object.



Syntax: id(object)

where, object is the data variables.

Here we are going to find the address of the list, variable, tuple and dictionary.

Python3




# get id of list
a = [1, 2, 3, 4, 5]
print(id(a))
  
# get id of a variable
a = 12
print(id(a))
  
# get id of tuple
a = (1, 2, 3, 4, 5)
print(id(a))
  
# get id of a dictionary
a = {'a' : 1, 'b' : 2}
print(id(a))


Output:

140234866534752
94264748411744
140234904267376
140234866093264

Method 2: Find and Print Address of Variable using addressof()

we can also get memory addresses using these functions, ctypes is a foreign function library for Python. It provides C-compatible data types and allows calling functions in DLLs or shared libraries.

Syntax:addressof(c_int(object))

where object is the data variables

Example: Python program to get the memory address of a variable.

Python3




# import addressof,
# c_int modules from ctypes module
from ctypes import c_int, addressof
  
# get memory address of variable
a = 44
print(addressof(c_int(a)))


Output:

140234866278064

Method 3: Find and Print Address of Variable using hex()

Here we will call the hex(address) function, to convert the memory address to hexadecimal representation.

Syntax: hex(id(object))

where,

  • hex() is the memory hexadecimal representation to the address
  • id is used to get the memory of the object
  • object is the data

Example: Python program to get the memory address in hexadecimal representation.

Python3




# get id of list in hexadecimal representation
a = [1, 2, 3, 4, 5]
print(hex(id(a)))
  
# get id of a variable in hexadecimal representation
a = 12
print(hex(id(a)))
  
# get id of tuple in hexadecimal representation
a = (1, 2, 3, 4, 5)
print(hex(id(a)))
  
# get id of a dictionary in hexadecimal representation
a = {'a': 1,'b' : 2}
print(hex(id(a)))


Output:

0x7fba9b0ae8c0
0x5572da858b60
0x7fba9f3c4a10
0x7fba9b05b8c0



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