[Python知识库]Python 井字棋Demo

留给机器学习的接口

"""
    井字棋 Demo
    无 Frame 版本
    2021.11.8
"""
checkerboard = []


# 定义落子
def ChangeCheckerBoard(movement, agent):
    if checkerboard[movement] is not None:
        raise ValueError("Movement must be empty!")
    else:
        checkerboard[movement] = agent


# 判断输赢
def isWin():
    states = [(0, 1, 2), (3, 4, 5), (6, 7, 8), (0, 3, 6), (1, 4, 7), (2, 5, 8), (0, 4, 8), (2, 4, 6)]
    for state in states:
        if checkerboard[state[0]] == checkerboard[state[1]] and checkerboard[state[1]] == checkerboard[state[2]] \
                and checkerboard[state[0]] in ('O', 'X'):
            return True
    return False


# 打印棋盘
def printCheckerBoard():
    for i in range(9):
        if checkerboard[i] is None:
            print('■', end='\t')
        else:
            print(checkerboard[i], end='\t')
        if (i + 1) % 3 == 0:
            print('\n')


# 更新回合
def renewTurn(turn):
    if turn == 'O':
        return 'X'
    return 'O'


# 验证输入
def ensureInput(section, remind, warning):
    while True:
        tem = input(remind)
        if tem in section:
            return tem
        else:
            print(warning)


# 留给机器训练的接口
def TrainAPI(board, movement, Turn):
    """
        在训练代码中
        记得调用isWin判断是否获胜
        未获胜要调用renewTurn更新回合
    """
    global checkerboard
    checkerboard = board
    new_move = movement
    ChangeCheckerBoard(new_move, Turn)


# 判断是否平局
def isEqual():
    if None not in checkerboard:
        return True
    return False


# 测试主函数
if __name__ == '__main__':
    # 游戏主循环
    while True:
        # 定义棋盘
        checkerboard = [None for i in range(9)]
        # O先X后
        Turn = 'O'
        while True:
            # 输入移动坐标
            new_move = ensureInput(('0', '1', '2', '3', '4', '5', '6', '7', '8'),
                                   '请输入{}本次的移动坐标(0~8)：'.format(Turn),
                                   '移动坐标不规范！请重新输入！')
            new_move = int(new_move)
            # 移动
            ChangeCheckerBoard(new_move, Turn)
            # 打印棋盘
            printCheckerBoard()
            if isWin():
                print('{}赢了！'.format(Turn))
                break
            if isEqual():
                print('平局！')
                break
            Turn = renewTurn(Turn)
        selection = ensureInput(('Yes', 'No'),
                                '想要再玩一盘吗？(Yes/No)',
                                '请输入Yes或No!')
        if selection == 'No':
            break