In python, how to get original order of list or array or series after randomizing them using random() function?

Question

I'm unable to get original order of list or array or series after randomizing them using random() function ? Please suggest some solution or different algorithm for the same.

Answer 1

One solution is:

import random

listA = [1,2,3,4]
listB = listA.copy()
random.shuffle(listA)
print(listA, listB)

You can also randomize using index only. It's useful when you want to avoid the manipulation of data.

import random

listA = ['A','B','C','D']

idxs = [i for i in range(len(listA))]
random.shuffle(idxs)

listB = [listA[i] for i in idxs]

print(listA, listB)