打印二维列表

Question

我正在尝试打印一个二维列表，用来表示一个四子连珠的控制台游戏。它应该看起来像这样：

 1  2  3  4  5  6  7
 .  .  .  .  .  .  .
 .  .  .  .  .  .  .
 .  .  .  .  .  .  .
 .  .  R  .  .  .  .
 .  .  Y  R  .  .  .
 .  R  R  Y  .  Y  .

这是我目前的代码，但我似乎无法让它正常工作，总是出现“IndexError”，提示“元组索引超出范围”。请记住，在connect_four模块中，BOARD_ROWS等于6，BOARD_COLUMNS等于7。NONE是' '（空格），RED是'R'，YELLOW是'Y'。另外，game_state是一个命名元组对象，有两个字段，第一个是游戏棋盘（字符串列表）。

def print_board(game_state) -> None:
    """ Prints the game board given the current game state """
    print("1 2 3 4 5 6 7")
    for a in range(connect_four.BOARD_ROWS):
        for b in range(connect_four.BOARD_COLUMNS):
            if game_state[b][a] == connect_four.NONE:
                print('.', end=' ')
            elif game_state[b][a] == connect_four.RED:
                print('R', end=' ')
            elif game_state[b][a] == connect_four.YELLOW:
               print('Y', end=' ')
            else:
               print('\n', end='')

命名元组的代码

def _new_game_board() -> [[str]]:
    """
    Creates a new game board.  Initially, a game board has the size
    BOARD_COLUMNS x BOARD_ROWS and is comprised only of strings with the
    value NONE
    """
    board = []

    for col in range(BOARD_COLUMNS):
        board.append([])
        for row in range(BOARD_ROWS):
            board[-1].append(NONE)

    return board

ConnectFourGameState = collections.namedtuple('ConnectFourGameState', ['board', 'turn'])


def new_game_state() -> ConnectFourGameState:
    """
    Returns a ConnectFourGameState representing a brand new game
    in which no moves have been made yet.
    """
    return ConnectFourGameState(board=_new_game_board(), turn=RED)

Answer 1

在你添加了其他代码后，我对你表示行和列的方式有点困惑，所以如果我是用你那种方法来解决这个问题，我会这样写代码；希望对你有帮助：

def _new_game_board() -> [[str]]:
    """
    Creates a new game board.  Initially, a game board has the size
    BOARD_COLUMNS x BOARD_ROWS and is comprised only of strings with the
    value NONE
    """

    return [[None] * BOARD_COLUMNS for _ in range(BOARD_ROWS)]

ConnectFourGameState = namedtuple('ConnectFourGameState', ['board', 'turn'])

def new_game_state() -> ConnectFourGameState:
    """
    Returns a ConnectFourGameState representing a brand new game
    in which no moves have been made yet.
    """

    return ConnectFourGameState(board=_new_game_board(), turn=RED)

至于 print_board 函数：

def print_board(game_state):
    """Prints the game board given the current game state"""

    print("1 2 3 4 5 6 7")
    for row in range(BOARD_ROWS):
        for col in range(BOARD_COLUMNS):
            if game_state.board[row][col] == connect_four.NONE:
                print('.', end=' ')
            elif game_state.board[row][col] == connect_four.RED:
                print('R', end=' ')
            elif game_state.board[row][col] == connect_four.YELLOW:
               print('Y', end=' ')

        print()