Python 如果错误消息说赋值前引用了变量，这意味着什么？

这是一个程序，要求我执行以下操作：查找播放器名称并根据用户输入打印出一个输出，但是当我运行它时，会出现find==False和current 查找的检查是在完成搜索后完成的，而不是在内部完成 将当前声明为0。 从当前->0循环到最大值-1 发现是真的不是真的

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托比亚斯·克是对的。你真正想要的是：

def Q7():
    names=['ben','thor','zoe','kate'] #the list of names 
    Max = 4
    found=False
    current = 0
    Splayer = input("What plaer are you looking for? ")
    while found == False and current <= Max-1:
        if names[current]== Splayer:
            found = True
        else:
            current = current+1
        if found == True:
            print('yes, they have a top')
        else:
            print('no,they do not have a top score')

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你的问题是什么？我们不明白。。。解释解释一下医生。。。解释消灭医生。什么是问题？循环前定义电流=0。这只是读错了。。。。。。或者只是在名称中使用find=Splayer。另外，==True是不必要的。当然，只是想帮助您处理当前代码@tobias_Ka事实上，这行不通。名称[4]不存在。你需要边走边说谢谢伙计我很感激你的帮助

def Q7():
    names=['ben','thor','zoe','kate'] #the list of names 
    Max = 4
    found=False
    Splayer = input("What plaer are you looking for? ")
    current = 0;
    while found == False and current < Max:
        if names[current]== Splayer:
            found = True
        current = current+1
    if found == True:
        print('yes, they have a top')
    else:
        print('no,they do not have a top score')

def Q7():
    names=['ben','thor','zoe','kate'] #the list of names 
    Max = 4
    found=False
    current = 0
    Splayer = input("What plaer are you looking for? ")
    while found == False and current <= Max-1:
        if names[current]== Splayer:
            found = True
        else:
            current = current+1
        if found == True:
            print('yes, they have a top')
        else:
            print('no,they do not have a top score')

names = ['ben', 'thor', 'zoe', 'kate']
player = input("What player are you looking for? ")
if player in names:
    print("Yes, they have a top score.")
else:
    print("No, they don't.")