Determines cycles between current and initial deck configuration

cycles.py

# Determines cycles between current and initial configuration
def cycles(post_round_one_deck):
    group = [1] * len(post_round_one_deck)
    for i in range(0, len(post_round_one_deck)):
        index = i
        while post_round_one_deck[index] != i:
            index = post_round_one_deck[index]
            group[i] += 1
    return group