Created
July 9, 2012 17:15
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Monty Hall problem
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from random import randint | |
class Game: | |
def __init__(self): | |
self.correct = randint(0,2) | |
def make_guess(self, door): | |
self.guess = door | |
def verify(self): | |
return self.correct == self.guess | |
def open_donkey(self): | |
val = randint(0,2) | |
while val == self.correct or val == self.guess: | |
val = randint(0,2) | |
return val | |
def run(change=False, verbose=False): | |
g = Game() | |
p = randint(0,2) | |
if verbose: | |
print "Player guessing door nr " + str(p+1) | |
g.make_guess(p) | |
d = g.open_donkey() | |
if verbose: | |
print "Host opens door nr " + str(d+1) + " to reveal a donkey" | |
if change: | |
for i in range(3): | |
if i != p and i != d: | |
if verbose: | |
print "Player switches to " + str(i+1) | |
g.make_guess(i) | |
else: | |
if verbose: | |
print "Player stays on the same door" | |
win = g.verify() | |
if verbose: | |
if win: | |
print "Player wins!" | |
else: | |
print "Player loose..." | |
return win | |
def LoopGame(change=False, nbr_of_games=10000000): | |
if change: | |
print "Run game. Change everytime. " + str(nbr_of_games) + " iterations." | |
else: | |
print "Run game. Never change. " + str(nbr_of_games) + " iterations." | |
wins = 0 | |
loses = 0 | |
for n in xrange(nbr_of_games): | |
result = run(change, False) | |
if result: | |
wins += 1 | |
else: | |
loses += 1 | |
print "Wins: " + str(wins) + " Loses: " + str(loses) | |
if __name__ == "__main__": | |
LoopGame(True) | |
LoopGame(False) |
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