Question

我不确定如何修复我的代码，有人可以帮忙！它打印这个 - ＆gt; “NameError：在封闭范围中赋值之前引用的自由变量'info'，我不知道如何使info成为全局变量，我认为这是问题......有人请帮忙！

import time
import random

admincode = ["26725","79124","18042","17340"]
stulogin = ["NikWad","StanBan","ChrPang","JaiPat","JusChan","AkibSidd","VijSam"]
teachercode = ["KGV"]

def main():
    def accesscontrol():
        global teachercode, stulogin, admincode
        print("Enter: Student,Teacher or Admin")
        option = input("--> ")
        if option == "Student":
            info()
        elif option == "Teacher":
            print("Enter you teacher code(xxx)")
            option = input
            if option == teachercode:
                  print("Access Granted")
                  info()
            else:
                 print("Please input the correct code!")
                 accesscontrol()
        elif option == "Admin":
            print("Enter your admin code(xxxxx)")
            option = input("--> ")
            if option == admincode:
                print("access granted, my master!")
        else:
            accesscontrol()
    accesscontrol()

    def info():
        print("Hello, enter your information below")
        usname = input("Username: ")
        pwname = input("Password: ")
        done = False
        while not done:
            print("Is this the information correct?[Y/N]")
            option = input("--> ")
            if option == "Y":
                print("Information saved")
                print("Username :",usname,"\nPassword:",pwname)
                done = True
            else:
                main()
        return info()
    info()

main()

Answer 1

问题是您将accesscontrol和info定义为相对于main的本地名称。因此，当您在info内拨打accesscontrol时，它无法找到它，因为它是一个名称＆＃34;拥有＆＃34;换句话说就是main的本地。

而不是像这样的功能：

def main():
    def accesscontrol():
        # ...
    def info():
        # ...
    # ...

将它们移出main()，如下所示：

def accesscontrol():
    # ...

def info():
    # ...

def main():
    # ...

因此简单地保持main()：

def main():
    accesscontrol()
    info()

Answer 2

您需要在调用之前定义info()。您还有一个不必要的info()来电，我已将其删除。

import time
import random

admincode = ["26725", "79124", "18042", "17340"]
stulogin = ["NikWad", "StanBan", "ChrPang", "JaiPat", "JusChan", "AkibSidd", "VijSam"]
teachercode = ["KGV"]


def main():

    def info():
        print("Hello, enter your information below")
        usname = input("Username: ")
        pwname = input("Password: ")
        done = False
        while not done:
            print("Is this the information correct?[Y/N]")
            option = input("--> ")
            if option == "Y":
                print("Information saved")
                print("Username :", usname, "\nPassword:", pwname)
                done = True
            else:
                main()
        return info()

    def accesscontrol():
        global teachercode, stulogin, admincode
        print("Enter: Student,Teacher or Admin")
        option = input("--> ")
        if option == "Student":
            info()
        elif option == "Teacher":
            print("Enter you teacher code(xxx)")
            option = input
            if option == teachercode:
                print("Access Granted")
                info()
            else:
                print("Please input the correct code!")
                accesscontrol()
        elif option == "Admin":
            print("Enter your admin code(xxxxx)")
            option = input("--> ")
            if option == admincode:
                print("access granted, my master!")
        else:
            accesscontrol()

    accesscontrol()

main()

在函数内调用函数？帮助修复

2 个答案: