using the "RANDOM" library mix a pre-existing list organizing the elements in coupes so that the programs gives each element another element different than itself.

import random

def paring(l):
    to_be_shuffled = []
    for i in range(len(l)):
        to_be_shuffled.append((l[i],l[i]))
    
    random.shuffle(to_be_shuffled)
    return to_be_shuffled

ilist = [1, 2, 3, 4, 5]

paring(ilist)