pile_sizes = [5] * 3
player_ID = 1

while True:
    print '-' * 20
    print 'Player', player_ID, 'moves next'
    for i in range(3):
        print 'Pile', i+1, 'has', pile_sizes[i], 'stones'
    pile_ID = int(raw_input('Which pile to take from? '))

    # Do input validation here: is pile_ID OK?

    stones_taken = int(raw_input('Take how many stones? '))

    # Do input validation here: is stones_taken OK?

    pile_size[pile_ID] -= stones_taken
	
    # Here, add up all the pile_sizes, to get the total # of stones

    # Here, check if the game is over (there are zero stones left)
    # If so, tell the losing player the bad news

    # Here, switch player_ID.  Clever, eh?
    player_ID = 3 - player_ID