MHP in python

DOORS=['A','B','C']
ALL_WIN=DOORS
CHOOSE=DOORS

total_wins=total_loss=0
stay_win=stay_loss=0
switch_win=switch_loss=0

def did_i_win(chosen_door, the_car):
    if chosen_door == the_car:
        return True
    else:
        return False


def show_results(fc, reveal, swap, car):
    if swap == fc: swap = '-'
    print "Car: %s Choice: %s Reveal: %s Change: %s  win=%s" \
    %(car, fc, reveal, swap, did_i_win(swap, car))

def stay(my_door, revealed, car):
    if did_i_win(my_door, car):
        global stay_win
        stay_win+=1
        global total_wins
        total_wins+=1
    else:
        global stay_loss
        stay_loss+=1
        global total_loss
        total_loss+=1
    show_results(my_door, revealed, my_door, car)

def switch(my_door, revealed, car):
    switch_list = [(g) for g in DOORS if g <> my_door and g <> revealed]
    # change the one-element [0] list to a string
    switch = switch_list[0]
    if did_i_win(switch, car):
        global switch_win
        switch_win+=1
        global total_wins
        total_wins+=1
    else:
        global switch_loss
        switch_loss+=1
        global total_loss
        total_loss+=1
    show_results(my_door, revealed, switch, car)

for winning_door in DOORS:
    for choice in CHOOSE:
        monty_choices = [(g) for g in DOORS if g <> winning_door and g <> choice]
        for reveal in monty_choices:
            stay(choice, reveal, winning_door)
            switch(choice, reveal, winning_door)
            print
    print

print "%s stay and win" % stay_win
print "%s stay and lose" % stay_loss
print "%s switch and win" % switch_win
print "%s switch and lose" % switch_loss