如何在Python 3.4中编写一个密码程序？

Question

我目前的用户名和密码相当于在代码中找到的一个。这就是我目前所拥有的：

import os

#Must Access this to continue.
def main():
    while True:
        UserName = input ("Enter Username: ")
        PassWord = input ("Enter Password: ")

        if UserName == Bob and PassWord == rainbow123:
            time.sleep(1)
            print ("Login successful!")
            logged()

        else:
        print ("Password did not match!")

def logged():
    time.sleep(1)
    print ("Welcome to ----")

main()

运行代码后，收到以下错误：

Traceback (most recent call last):
  File "C:\Users\Austin\Desktop\oysterDev\oysterDev.py", line 23, in <module>
    main()
  File "C:\Users\Austin\Desktop\oysterDev\oysterDev.py", line 11, in main
    if UserName == Bob and PassWord == rainbow123:
NameError: name 'Bob' is not defined

有人知道我做错了什么吗？或者我在哪里可以找到像这样适用于Python3.4的代码？谢谢！

Answer 1

现在您正在检查正确的密码和用户：

if UserName == Bob and PassWord == rainbow123:

如果没有引号，python希望bob和rainbow123是定义的变量。因为它们没有定义，所以它抛出一个NameError。

只需将这些值用引号括起来：

import os
import time
#Must Access this to continue.
def main():
    while True:
        UserName = input ("Enter Username: ")
        PassWord = input ("Enter Password: ")

        if UserName == 'Bob' and PassWord == 'rainbow123':
            time.sleep(1)
            print ("Login successful!")
            logged()

        else:
            print ("Password did not match!")

def logged():
    time.sleep(1)
    print ("Welcome to ----")

main()