在井字游戏代码中寻求布尔运算符帮助的初学者

Question

我最近开始学习 python，并尝试了一个 Tic Tac Toe 项目，我在其中观看了一段视频。尽管非常努力地遵循并参考了代码，但我已经到了程序在一轮后终止的地步。我已经将我的代码与项目代码进行了比较，我认为问题出在我代码的“检查是否获胜”部分，每次比较都会将“game_still_going”变量转换为 false，从而终止游戏。

除了复制和粘贴指南代码的各个部分之外，我已经检查并重试了一个多小时的代码。

任何有关布尔部分的帮助将不胜感激。

board = ["_", "_", "_",
         "_", "_", "_",
         "_", "_", "_"]

game_still_going = True

winner = None

current_player = "X"




def display_board():
    print(board[0] + " | " + board[1] + " | " + board[2])
    print(board[3] + " | " + board[4] + " | " + board[5])
    print(board[6] + " | " + board[7] + " | " + board[8])


def handle_turn(player):
    print(player + "'s turn.")
    position = input("Choose a position, from 1-9: ")

    invalid = True
    while invalid == True:

        while position not in ["1", "2", "3", "4", "5", "6", "7", "8", "9"]:
            position = input("Choose a position from 1-9")

        position = int(position) - 1

        if board[position] == "_":
            invalid = False
        else:
            print("You can't go there! Go again.")

    board[position] = player

    display_board()



def check_for_winner():
    global winner
    global game_still_going
    # setup global variables

    # check rows
    row_winner = check_rows()
    # check columns
    column_winner = check_columns()
    # check diagonals
    diagonals_winner = check_diagonals()

    if row_winner:
        winner = row_winner
    elif column_winner:
        winner = column_winner
    elif diagonals_winner:
        winner = diagonals_winner
    else:
        winner = None
    return



def check_rows():
    global game_still_going
    row_1 = board[0] == board[1] == board[2] != ["_"]
    row_2 = board[3] == board[4] == board[5] != ["_"]
    row_3 = board[6] == board[7] == board[8] != ["_"]

    if row_1:
        return board[0]
    elif row_2:
        return board[3]
    elif row_3:
        return board[6]
    else:
        return None




def check_columns():
    global game_still_going
    column_1 = board[0] == board[3] == board[6] != ["_"]
    column_2 = board[1] == board[4] == board[7] != ["_"]
    column_3 = board[2] == board[5] == board[8] != ["_"]

    if column_1 or column_2 or column_3:
        game_still_going = False

    if column_1:
        return board[0]
    elif column_2:
        return board[1]
    elif column_3:
        return board[2]
    else:
        return None




def check_diagonals():
    global game_still_going
    diagonals_1 = board[0] == board[4] == board[8] != ["_"]
    diagonals_2 = board[2] == board[4] == board[6] != ["_"]

    if diagonals_1:
        game_still_going = False
    elif diagonals_2:
        game_still_going = False

    if diagonals_1:
        return board[0]
    elif diagonals_2:
        return board[2]
    else:
        return None








def check_for_tie():
    global game_still_going
    if "_" not in board:
        game_still_going = False
        return True
    else:
        return False


def flip_player():
    global current_player
    if current_player == "X":
        current_player = "O"
    elif current_player == "O":
        current_player = "X"

    return


def check_if_game_over():
    check_for_winner()

    check_for_tie()



def play_game():
    display_board()

    while game_still_going:
        handle_turn(current_player)

        check_if_game_over()

        flip_player()

        print(game_still_going)
   
    if winner == "X" or winner == "O":
        print(winner + 'won!')
    elif winner == None:
        print("Tie!")


play_game()

Answer 1

board[n] 是字符串，不是列表。所以这个：

    column_1 = board[0] == board[3] == board[6] != ["_"]
    column_2 = board[1] == board[4] == board[7] != ["_"]
    column_3 = board[2] == board[5] == board[8] != ["_"]

应该是：

    column_1 = board[0] == board[3] == board[6] != "_"
    column_2 = board[1] == board[4] == board[7] != "_"
    column_3 = board[2] == board[5] == board[8] != "_"

同check_diagonals。我还没有检查这是否是唯一的问题。

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