python - 如何确保用户输入的密码与注册到该密码的用户名匹配？

Question

我很好奇如何制作一个用户注册的示例程序(我知道如何做这部分)但是当用户注册并且用户名被添加到列表或字典中时，他们必须这样做另一个用户的密码，因为如果我执行“if x in x:”，因为它将允许另一个用户的密码访问不同的用户。我只想匹配正确的数据。

#Example

users = ["bob", "joe"]
passwords = ["example1", "example2"]

ex1 = input("What is your username?")
if ex1 in users:
    ex2 = input("enter your password")
if ex2 in passwords:
    print("access granted")
#With this code any password will work with any user,
#I want the registered user's password to have to be the password they registered with

Answer 1

您需要使用字典，这样您就可以将密码链接到用户。

users = ["bob", "joe"]
passwords = ["example1", "example2"]

# d = {'bob' : 'example1', 'joe' : 'example2'}
# An example how to zip your lists into a dictionary
d = dict(zip(users, passwords))

ex1 = input("What is your username?")
if ex1 in users:
    ex2 = input("enter your password")

# How to use your dict to check if the password matches the user
if ex2 == d[ex1]:
    print("access granted")