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python - 我无法在二十一点游戏中关闭我的 while 循环

问题描述

我正在用 Python 制作二十一点游戏，并且正在使用 while 循环。在我的代码中，我得到了一个带有 if 语句的输入，如果玩家选择再玩一轮（输入“Y”），游戏就会重新开始（我没有问题）。我的问题是，如果玩家输入“N”（表示否），游戏仍然会重新运行。我想做的是当玩家输入“N”时，游戏结束。我的代码有什么问题？我被卡住了，无法弄清楚。

此外，正如您在我的代码中看到的那样，我在 while 循环中多次使用 closed = True 并且它有效（例如，如果玩家获得 21 分，则游戏结束）。唯一一次关闭 = True 不起作用是在elif play_again.lower() != "Y": closed = True我的代码部分。

closed = False
while not closed:

    if player_total == 21:
        print("\nCongrats, the player got a Blackjack!")
        closed = True

    else:
        input_answer = int(input("\n1 - Hit \n2 - Stand \n \nDo you wish to Hit or Stand? "))

        if input_answer == 1:
            print("You chose to Hit.")
            give_cards(player_hand, 1)
            player_total = bjm.calculate_hand_value(player_hand)
            print(f'\nThe player has got a new card: {player_hand[2]}. \nThe player currently has {", ".join(player_hand)},'
                  f' with a total value of {player_total}.')

            if player_total > 21:
                print("Busted! You got a total value over 21.")
                closed = True

        elif input_answer == 2:
            print("\nYou chose to Stand.")
            print(f'The dealers cards are: {" and a ".join(dealer_hand)}, with a total value of {dealer_total}.')
            print(f'The players cards are {", ".join(player_hand)} with a total value of {player_total}.')
            print_result(player_hand, dealer_hand)

            play_again = input("\nDo you want to play another round? Y/N: ")

            if play_again.lower() != "N":
                print("You wanted to play another round, you will be dealt two new cards.\n")

                player_hand.clear()
                dealer_hand.clear()

                give_cards(player_hand, 2)
                give_cards(dealer_hand, 2)

                print(f'\nThe players new cards are: {" and a ".join(player_hand)}, with a total value of {player_total}.')
                print(f'The dealers new cards are: {" and a ".join(dealer_hand)}, with a total value of {dealer_total}.')

            elif play_again.lower() != "Y":
                closed = True

closed = True

标签： pythonwhile-loopblackjack

解决方案

A better way than what you are using right now to end the loop is to simply replace your condition in closed = True with break.

Additionally, the reason your code isn't working is because you are trying to compare the .lower() (which will always give you a lower case letter) with a capital case letter, which means that this condition:

            elif play_again.lower() != "Y":
                closed = True

will never be true.

replace it with "y" instead of "Y"

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