Dice.py

#!/bin/python
#Stupid dice trick -- add two dice together to eliminate the bias from a bad die
#even less useful on a computer!

import random

random.seed()

countnice = [0,0,0,0,0,0] # six elements, 0-5, counting the number of 1-6 results
countbad = [0,0,0,0,0,0]
countadded = [0,0,0,0,0,0]

for i in range(1,6000) :
 niceroll = random.randint(1,6) # six sides for our good die
 badroll = random.randint(1,7) # baddie has seven sides, but
 if badroll == 7 : badroll = 6 # we load the die so 6+7 are both 6, bumping its odds up
 added = (niceroll + badroll) % 6 # roll over to 1 if we're over 6
# oh yeah, the list's elements are numbered from 0, not 1, so subtract 1 from the index
 countnice[niceroll-1] = countnice[niceroll-1] + 1
 countbad[badroll-1] = countbad[badroll-1] + 1
 countadded[added-1] = countadded[added-1] + 1
# mathematically you should see close to 1000 for each side.

print "Good die rolled :", countnice
print "Bad die rolled  :", countbad
print "Added result    :", countadded