v1

def play_pig(A, B):
    """Lets play a small game of pig between two players, represented by
    their strategy. Each time through the main loop, we ask the current player
    for one decision which must be 'hold' or 'roll', and we update the state
    accordingly when one player's score exceeds the goal, return that player"""

    strategies = [A, B]
    state = (0,0,0,0)
    while True:
        (p, me, you, pending) = state
        if me >= goal:
            return strategies[p]
        elif you >= goal:
            return strategies[other[p]]
        elif strategies[p](state) == 'hold':
            state = hold(state)
        else:
            state = roll(state, random.randint(1,6))