Question

Question1 = input("We will start off simple, what is your name?")
if len(Question1) > 0 and Question1.isalpha(): #checks if the user input contains characters and is in the alphabet, not numbers.
    Question2 =  input("Ah! Lovely name, %s. Not surprised you get all the women, or is it men?" % Question1)
    if Question2.lower() in m: #checks if the user input is in the variable m
        print ("So, your name is %s and you enjoy the pleasure of %s! I bet you didnt see that coming." % (Question1, Question2))
    elif Question2.lower() in w: # checks if the user input is in the variable w
        print ("So, your name is %s and you enjoy the pleasure of %s! I bet you didnt see that coming." % (Question1, Question2))
    else: #if neither of the statements are true (incorrect answer)
        print ("Come on! You're helpless. I asked you a simple question with 2 very destinctive answers. Restart!")
else:
    print ("Come on, enter your accurate information before proceeding! Restart me!") #if the first question is entered wrong (not a name)
Question3 = input("Now I know your name and what gender attracts you. One more question and I will know everything about you... Shall we continue?")

为了得到正确的答案，我会首先告诉你运行时会发生什么：有几种情况，但我会引导你完成2.当我运行程序时，我首先被问到我的名字是什么，我可以在这里输入任何字母，然后它问我是否喜欢男人或女人，很奇怪我知道但是这是我正在研究的一个项目，如果我说'男'或'女'这个程序运行得很好，但是如果我要输入说''狗'它会遵循else语句print ("Come on! You're helpless. I asked you a simple question with 2 very destinctive answers. Restart!")但是然后它继续代码并转到上面显示的最后一行“现在我知道你的名字和性别吸引你......等等等等”。 我要做的是让你重新启动脚本，如果你输入的不是“男人”或“女人”。 我被告知可以使用while语句，但是我需要解释为什么以及如何...在某种意义上我是Python的新手。

Answer 1

那是什么循环。

while True:
    # your input and all that here
    if answer == "man" or answer == "woman":
        # do what you want if the answer is correct
        break # this is important, as it breaks the infinite `while True` loop
    else:
        # do whatever you want to do here :)
        continue

Answer 2

如果您希望脚本无限重复，您可以简单地将所有内容包装在while循环中，如下所示：

while True:
    # Do yo your logic here.
    # Break out when a condition is met.

如果你想更精明地使用它，你可以使用一种方法，并让方法一遍又一遍地调用，直到它完成。

def ask_questions():
    # Do your logic here
    if INPUT_NOT_VALID:
        ask_questions()
    else:
        # Continue on.

另外，在这个网站上搜索你的文字，因为我已经看到所有涉及这个编程场景的五六个问题，这意味着它必须是编程类的一个常见问题（我假设你在一个）。如果是这种情况与同学讨论，并试图互相激励，找到解决方案，而不是只是在网上发帖回答。

重启Python程序和If语句 - 不复杂

2 个答案: