Roschambo multiperson game simulator

roschambo.py

#!/usr/bin/env python

import random

PLAYER_COUNT = 5
players = [ None ] * PLAYER_COUNT

ROCK = 1
PAPER = 2
SCISSORS = 3

player_names = {"Seamus":0, "Ryan":0, "Laurel":0, "Jenn":0, "Ariel":0}
pkeys = sorted(player_names.keys())
one_throw = 0
two_throw = 0
all_different = 0
total = 0
THROW_COUNT = 100000

def find_winner(a, b):
    r = a - b
    if r == 0:
        return None
    if r == 1: # paper v rock, scissors v paper
        return a
    if r == -2: # rock v scissors
        return a
    return b        

while total < THROW_COUNT:
    total += 1
    for i in range(len(players)):
        players[i] = random.randint(1,3)

    uniques = set(players)
    if len(uniques) == 1:
        one_throw += 1
    if len(uniques) == 2:
        (a, b) = uniques
        winner = find_winner(a,b)
        for i,k in enumerate(pkeys):
            if players[i] == winner:
                player_names[k] += 1
        two_throw += 1
    else:
        all_different += 1

print "One: %0.4f percent" % (100 * (float(one_throw) / total))
print "Two: %0.4f percent" % (100 * (float(two_throw) / total))
print "All Different: %0.4f percent" % (100 * (float(all_different) / total))
print "Winners:"
for k,v in player_names.iteritems():
    print "  ", k, "won", v, "times"