python - 正确输入后尝试除块不通过

Question

我是 Python 和一般编码的新手，并且在我的代码中遇到了一些错误。每当我在我的 Try/Except 代码块中输入错误的输入时，控制台就会打印“无效输入”但是，每当我在控制台中输入正确的短语时，它仍然会显示“无效输入”。我在网上查看并尝试使用这些代码行来解决这个问题（用## 表示），但我仍然遇到同样的问题。

例如，我会用正确的大小写和所有内容输入“Mad Libs”，但仍然会从我的 != 命令中得到“无效输入”。这可以通过以不同的方式格式化来轻松解决吗？这发生在所有 3 场比赛中。

如何解决这个问题？提前致谢！

def game_selection(): ##
    pass ##


while True: ##
    try:
        playerChoice = input("So, which game would you like to play?: ")
        if playerChoice != "Mad Libs":
            print("Invalid input")
        elif playerChoice != "Guessing Game":
            print("Invalid input")
        elif playerChoice != "Language Maker":
            print("Invalid input")
        continue ##
    except:
        print("Invalid Input")


game_selection() ##

print("Got it! " + playerChoice + " it is!")
sleep(2)

if playerChoice == "Mad Libs":
    print("Initializing 'Mad Libs'.")
    sleep(.5)
    print("Welcome to MadLibs, " + playerName + "! There are a few simple rules to the game.")
    print("All you have to do is enter in a phrase or word that is requested of you.")
    playerReady = input("Ready to begin? Y/N")

标签： pythonpython-3.xtry-except

Answer 1

因为您要求它在此代码中回答无效输入

While True: ##
    try:
        playerChoice = input("So, which game would you like to play?: ")
        if playerChoice != "Mad Libs":
            print("Invalid input")
        elif playerChoice != "Guessing Game":
            print("Invalid input")
        elif playerChoice != "Language Maker":
            print("Invalid input")
        continue ##
    except:
        print("Invalid Input")