bingo小游戏（圈圈叉叉小游戏）python

这个游戏原本是学习的这本书上的小游戏，但是文章最后留了一个地址，然后我点进去了，然后就看到了这个小游戏

觉得很有趣，一下子没看懂，所以就把它注释了一番，帮助自己理解

原文源码地址（需要翻墙）

# Tic Tac Toeimport random# 打印方法def drawBoard(board):    # This function prints out the board that it was passed.    # "board" is a list of 10 strings representing the board (ignore index 0)    print('   |   |')    print(' ' + board[7] + ' | ' + board[8] + ' | ' + board[9])    print('   |   |')    print('-----------')    print('   |   |')    print(' ' + board[4] + ' | ' + board[5] + ' | ' + board[6])    print('   |   |')    print('-----------')    print('   |   |')    print(' ' + board[1] + ' | ' + board[2] + ' | ' + board[3])    print('   |   |')def inputPlayerLetter():    # Lets the player type which letter they want to be.    # Returns a list with the player’s letter as the first item, and the computer's letter as the second.    letter = ''    while not (letter == 'X' or letter == 'O'):        print('Do you want to be X or O?')        letter = input().upper()    # the first element in the list is the player’s letter, the second is the computer's letter.    if letter == 'X':        return ['X', 'O']    else:        return ['O', 'X']def whoGoesFirst():    # Randomly choose the player who goes first.    if random.randint(0, 1) == 0:        return 'computer'    else:        return 'player'def playAgain():    # This function returns True if the player wants to play again, otherwise it returns False.    print('Do you want to play again? (yes or no)')    return input().lower().startswith('y')# 下子def makeMove(board, letter, move):    board[move] = letter# 判断游戏是否结束def isWinner(bo, le):    # Given a board and a player’s letter, this function returns True if that player has won.    # We use bo instead of board and le instead of letter so we don’t have to type as much.    return ((bo[7] == le and bo[8] == le and bo[9] == le) or  # across the top            (bo[4] == le and bo[5] == le and bo[6] == le) or  # across the middle            (bo[1] == le and bo[2] == le and bo[3] == le) or  # across the bottom            (bo[7] == le and bo[4] == le and bo[1] == le) or  # down the left side            (bo[8] == le and bo[5] == le and bo[2] == le) or  # down the middle            (bo[9] == le and bo[6] == le and bo[3] == le) or  # down the right side            (bo[7] == le and bo[5] == le and bo[3] == le) or  # diagonal            (bo[9] == le and bo[5] == le and bo[1] == le))  # diagonaldef getBoardCopy(board):    # Make a duplicate of the board list and return it the duplicate.    dupeBoard = []    for i in board:        dupeBoard.append(i)    return dupeBoard# 验证输入的list值是否为空def isSpaceFree(board, move):    # Return true if the passed move is free on the passed board.    return board[move] == ' '# 返回下子位置def getPlayerMove(board):    # Let the player type in their move.    move = ' '    while move not in '1 2 3 4 5 6 7 8 9'.split() or not isSpaceFree(board, int(move)):        print('What is your next move? (1-9)')        move = input()    return int(move)# 从这些列表里面随机下def chooseRandomMoveFromList(board, movesList):    # Returns a valid move from the passed list on the passed board.    # Returns None if there is no valid move.    possibleMoves = []    # 获取空子位置list    for i in movesList:        if isSpaceFree(board, i):            possibleMoves.append(i)            # list不为空，随机选一个    if len(possibleMoves) != 0:        return random.choice(possibleMoves)    else:        return None# 电脑获取下子位置def getComputerMove(board, computerLetter):    # Given a board and the computer's letter, determine where to move and return that move.    if computerLetter == 'X':        playerLetter = 'O'    else:        playerLetter = 'X'    # 这个是机器下子的算法    # Here is our algorithm for our Tic Tac Toe AI:    # 首先检测我们下一步是否能赢    # First, check if we can win in the next move    for i in range(1, 10):        # copy一份目前的下子画板        copy = getBoardCopy(board)        # 如果备份的画板中内容不为空        if isSpaceFree(copy, i):            # 下子            makeMove(copy, computerLetter, i)            # 如果下这个位置赢就将这个位置返回            if isWinner(copy, computerLetter):                return i                # 检测对手下一步是否会赢，会赢的话就堵它    # Check if the player could win on their next move, and block them.    for i in range(1, 10):        copy = getBoardCopy(board)        if isSpaceFree(copy, i):            makeMove(copy, playerLetter, i)            if isWinner(copy, playerLetter):                return i                # 优先下这些位置（优先占据角落）    # Try to take one of the corners, if they are free.    move = chooseRandomMoveFromList(board, [1, 3, 7, 9])    if move != None:        return move    # 夺取中心点    # Try to take the center, if it is free.    if isSpaceFree(board, 5):        return 5    # 在最后的列表中下子    # Move on one of the sides.    return chooseRandomMoveFromList(board, [2, 4, 6, 8])def isBoardFull(board):    # Return True if every space on the board has been taken. Otherwise return False.    for i in range(1, 10):        if isSpaceFree(board, i):            return False    return Trueprint('Welcome to Tic Tac Toe!')# 死循环，没有while True:    # Reset the board    # 重置输出板    theBoard = [' '] * 10    # 选棋子    playerLetter, computerLetter = inputPlayerLetter()    # 随机产生谁先下    turn = whoGoesFirst()    # 打印是谁先下    print('The ' + turn + ' will go first.')    # 游戏开始    gameIsPlaying = True    while gameIsPlaying:        # 人先下        if turn == 'player':            # Player’s turn.            # 打印画板            drawBoard(theBoard)            # 获取下子位置            move = getPlayerMove(theBoard)            # 下子            makeMove(theBoard, playerLetter, move)            # 判断游戏是否结束            if isWinner(theBoard, playerLetter):                drawBoard(theBoard)                print('Hooray! You have won the game!')                # 结束游戏                gameIsPlaying = False            else:                # 验证画板是否画满                if isBoardFull(theBoard):                    drawBoard(theBoard)                    print('The game is a tie!')                    break                else:                    turn = 'computer'        else:            # Computer’s turn.            # 机器获取下子位置            move = getComputerMove(theBoard, computerLetter)            makeMove(theBoard, computerLetter, move)            if isWinner(theBoard, computerLetter):                drawBoard(theBoard)                print('The computer has beaten you! You lose.')                gameIsPlaying = False            else:                if isBoardFull(theBoard):                    drawBoard(theBoard)                    print('The game is a tie!')                    break                else:                    turn = 'player'    # 如果不想玩了就跳出循环    if not playAgain():        break