Krdytkyu

I recently had to write some code to create a "Christmas Angel" list shuffler. Everyone in my school will have a secret person who makes little gifts, and will make gifts to another one.

There is one condition : when you shuffle the list, you must not pick your name, of course.

Here is my code :

import random



def indexes(array):

'''small function to create a blank array with len(array) empty items'''

    output = 

    for i in range(0, len(array)):

        output.append(i)



    return output





liste = ["a", "b", "c", "d", "e"]

result = indexes(liste)

used_ind = 





for i in range(0, len(liste)):



    while True:

        new_in = random.randrange(0, len(liste))

        if new_in != i and new_in not in used_ind:

            used_ind.append(new_in)

            result[new_in] = liste[i]

            break



print(result)

The code runs fine in python, but it sometimes gets stuck.
Any clue why ? I guess it must be unable to find the last index that has not been used yet, but the random generation is so quick that it eventually should find it quickly, no ?