第三个函数 while loop is not working（循环不工作）

The third functions while loop isnt working

提问人：omar 提问时间：8/7/2023 最后编辑：Samwiseomar 更新时间：8/7/2023 访问量：63

问：

基本上，它在第三个功能中的while循环问题。

我会给出代码。然后，我向你展示当我运行它时会发生什么以及我想要什么

代码如下

def who_do_you_want_to_be(x):
    print("you will be "+x)
    print("Great choice!")
    
def who_do_you_want_to_face(a, x):
    print(a + " will face "+x + "\n" )
    
def Where_do_u_want_to_fight(a):
    
    while True:

        place=input("\nchoose to fight in either (pokemon stadium, planet namek, or the leaf village): ").lower()
        
        if a=="pokemon stadium":
            print("Not today but maybe tomorrow")
            print("Well also give you pokemon stadium music too but im in a rush")
            break
            
        elif a=="planet namek":
            print("Not today but maybe tomorrow")
            print("Well also give you planet namek music too but im in a rush")
            break
            
        elif a=="the leaf village":
            print("Not today but maybe tomorrow")
            print("Well also give you the leaf village music too but im in a rush")
            break
            
        else:
            print("Spell it correctly!\n")
            

    
    
character=input("write what pokemon you want to be (charzard, pikachu, or Gyarados) :").lower() 
who_do_you_want_to_be(character)

choice=input("\nwrite what pokemon you want to face (charzard, pikachu, or Gyarados) :").lower()    
who_do_you_want_to_face(character, choice)

place=input("\nchoose to fight in either (pokemon stadium, planet namek, or the leaf village): ").lower()
Where_do_u_want_to_fight(place)

现在我展示了代码。当我运行它时，第三个函数给出了这个

write what pokemon you want to be (charzard, pikachu, or Gyarados) :charzard
you will be charzard
Great choice!

write what pokemon you want to face (charzard, pikachu, or Gyarados) :pikachu
charzard will face pikachu

这就是问题所在//

choose to fight in either (pokemon stadium, planet namek, or the leaf village):  
pokemon stadium
choose to fight in either (pokemon stadium, planet namek, or the leaf village):  
pokemon stadium
Not today but maybe tomorrow
Well also give you pokemon stadium music too but im in a rush

它要求无缘无故地选择两次战斗问题。我在 while 循环中和它之外都有输入，但我不知道如何让它以其他方式发挥作用（当我切断它时，我面临其他问题）

我的最后一期是//

choose to fight in either (pokemon stadium, planet namek, or the leaf village):  
s
Spell it correctly!


choose to fight in either (pokemon stadium, planet namek, or the leaf village):  
the leaf village
Spell it correctly!

当他们选择错误的战斗点（拼写错误）时，它会运行 else 语句（拼写正确），然后它会循环返回并说 Choose Again。然后，当你真正拼写正确时，它就会回到 else 语句。我不知道该怎么办？

python 函数 while-loop

评论

0赞 quamrana 8/7/2023
这是一个错别字。你有两个，但你实际上只想要一个。input()
0赞 quamrana 8/7/2023
或者，就像我对你上一个问题的评论一样，你可以将函数内的 移动到最后一行，并使其如下所示：input()a=input("choose ...

答：

0赞 Samwise 8/7/2023 #1

该函数接受一个参数，即你想战斗的地方，然后还会询问用户他们想在哪里战斗（但它忽略了结果）：Where_do_u_want_to_fight

def Where_do_u_want_to_fight(a):
    
    while True:

        place=input("\nchoose to fight in either (pokemon stadium, planet namek, or the leaf village): ").lower()
        
        if a=="pokemon stadium":

请注意，这是您最初调用函数的参数，也是您刚刚向用户询问的内容。你从来没有使用过，所以无论你循环多少次并得到一个新的，你总是在检查原来的。aplaceplaceplacea

若要解决此问题，请删除该参数。由于您已经在函数内部请求输入，因此它是多余的：

def Where_do_u_want_to_fight():  # no argument
    
    while True:

        place=input("\nchoose to fight in either (pokemon stadium, planet namek, or the leaf village): ").lower()
        
        if place == "pokemon stadium":  # check 'place', not 'a'

调用它时，不带参数地调用它：

Where_do_u_want_to_fight()  # no 'place' argument needed here

评论

0赞 quamrana 8/7/2023
但是，如果你这样做，它使该函数与编写的其他函数不同。
0赞 Samwise 8/7/2023
是的;OP 最好让 IMO 了解这种差异，因为它可能会让他们对范围界定:)有一些见解
-2赞 Khaled Koubaa 8/7/2023 #2

看起来您在函数中遇到了几个问题。让我们一步一步地解决这些问题。Where_do_u_want_to_fight

  1. 重复输入问题：“选择战斗”问题被问两次的原因是，你在循环内部和外部都有输入提示。要解决此问题，您应该只在循环中设置输入提示。while

    下面是输入提示符代码的更正部分：

    def Where_do_u_want_to_fight(a):
    while True:
        place = input("\nChoose to fight in either (pokemon stadium, planet namek, or the leaf village): ").lower()

        if place == "pokemon stadium":
            print("Not today but maybe tomorrow")
            print("We'll also give you pokemon stadium music too but I'm in a rush")
            break
        elif place == "planet namek":
            print("Not today but maybe tomorrow")
            print("We'll also give you planet namek music too but I'm in a rush")
            break
        elif place == "the leaf village":
            print("Not today but maybe tomorrow")
            print("We'll also give you the leaf village music too but I'm in a rush")
            break
        else:
            print("Choose a valid location!")

  2. 拼写错误处理：要处理拼写不正确的问题，您需要更改要检查的变量。您当前正在检查（您要面对的角色）是否等于某个位置（例如，）。相反，您应该检查（选择的战斗位置）是否等于正确的位置字符串。a"pokemon stadium"place

    我已经在上面提供的更新的函数代码中更正了这一点。

通过这些更正，您的函数应该可以按预期工作。它会不断询问一个有效的战斗地点，直到用户输入正确的选择，然后它会跳出循环并相应地进行。Where_do_u_want_to_fight

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