未定义全局名称列表.只是模块变量 [英] global namelist is not defined. Is only module variable

问题描述

好的，所以使用此代码我进行了一些测试以查看主要问题是什么.我发现电话号码输入验证有问题，所以我#'ed它，所以它不活动.(如果你能解决这个问题，会给你一个贴纸.总之:

Ok so using this code I ran some testing to see what the main problem was. I found there is a problem with the phone number input validation so i #'ed it ,so its inactive.(if your are able to fix that problem wil lgive you a sticker. Anyway:

def main():

    name = []
    phone = []
    groupno = []
    score = []
    review = []

    q = input('Do you wish to Continue Y/N')
    while q != "Y":


        def data(name, phone, groupno, score, namelist, groupsizes,phonumber, mealscore):

            name =  input("Please enter the customer's name.")
        namelist.append(name)

        #phone = int(input("Please enter the customer's Phone Number."))
        #if len.str(phone) == 11:
        #    else: phone = int(input("Please enter the customer's Phone Number."))
        #phonumber.append(phone)

        sizeofgroup = int(input('Please enter the size of group: '))
        while sizeofgroup < 1 or sizeofgroup > 20:
            sizeofgroup = int(input('Please enter a valid group size: '))
        groupsizes.append(sizeofgroup)



        score = int(input('Please enter the rating of the meal: '))
        while score <= 1 or score >= 10:
            score = int(input('Please enter the rating of the meal- between 1 and 10: '))
        mealscore.append(score)

main()

我收到此错误:

您是否希望继续 Y/N?:y 回溯(最近一次通话):文件\QRSTORAGE\SMCPupilData$\stirlim\Work\S5\Computing\Coursework
Task\Program\code2.py"，第 35 行，在 main() 文件中"\QRSTORAGE\SMCPupilData$\stirlim\Work\S5\Computing\Coursework
Task\Program\code2.py", line 16, in main namelist.append(name)NameError: 全局名称namelist"未定义

Do you wish to Continue Y/N?: y Traceback (most recent call last): File "\QRSTORAGE\SMCPupilData$\stirlim\Work\S5\Computing\Coursework
Task\Program\code2.py", line 35, in main() File "\QRSTORAGE\SMCPupilData$\stirlim\Work\S5\Computing\Coursework
Task\Program\code2.py", line 16, in main namelist.append(name) NameError: global name 'namelist' is not defined

不确定错误是什么意思，但它与变量声明有关

Not sure what the error means but ofc its something to do with declaration of variables

推荐答案

因为 Python 使用缩进来确定作用域，所以分配 namelist 必须缩进以与对 name<的分配保持一致/代码>.否则它在函数之外的范围内，并且那里没有名为 namelist 的变量.更有用的错误消息是行需要缩进"，但 Python 无法猜测这一点.

Because Python uses indentation for scoping, the assignment namelist has to be indented to line up with the assignment to name. Otherwise it is in the scope outside the function, and there is no variable called namelist there. A more helpful error message would be "line needs to be indented", but there's no way for Python to guess that.

另外，len.str(phone) 失败，因为它试图获取 len 的 str 属性，但它没有得到一.你的意思是len(str(phone)).

Also, len.str(phone) fails because it tries to get the str attribute of len, and it hasn't got one. You mean len(str(phone)).

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