PyRef, Python 3 - rextester

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#python 3.6.9

#PyRef
#contact:jewelmrh@yahoo.com;Dhaka,Bangladesh;https://rezaulhoque.wordpress.com,https://hoquestake.blogspot.com
#note: codes shared by Rezaul Hoque on rextester are not for sale; they are created and shared to facilitate the algorithm learning process; many like Hoque use this platform to practice programming ;Rezaul hopes his contribution helps others to fine tune their learning;

#refcount() function code credit goes to pythontutorial.net
# rest of the code is modified and created by Rezaul Hoque on March 10,2022;
import ctypes

def refcount(address):
    return ctypes.c_long.from_address(address).value

numbers = [1,2,3]
alnum = numbers

print('Address of original variable')
print(id(numbers))
print('Address of alias variable')
print(id(alnum))

numbers=[5,6,7]
print('After reassigning the values of original variable')

print('Address of original variable')
print(id(numbers))
print('Address of alias variable')
print(id(alnum))
print('Reference count of original variable:')
print(refcount(id(numbers)))
print('Reference count of alias variable:')
num=numbers
num2=numbers
print(refcount(id(numbers)))

[ + ] Show input
Absolute running time: 0.17 sec, cpu time: 0.05 sec, memory peak: 8 Mb, absolute service time: 0,34 sec