Question

我目前正在尝试制作一个程序，要求用户输入用户名和密码。如果他们注销，他们必须能够重新输入密码和用户名。无论我怎么看，我都会收到“用户名和密码不正确”。

#Ask user for username and password
def main():
    username = input("Please enter a username: ")
    password = input("Please enter a desired password: ")
    save(username, password)

#trys to log user on
def save(username, password):
    if username == "username" and password == "password":
        login(username)
    else:
        print("Username and/or password is incorrect. Please try again!")
        main()

#Welcomes
def login(username):
    print("You have successfully logged in!")
    print()
    print("Welcome user!")
    print()
    commands()

#run a simple output
def commands():

    command = input("What would you like me to do for you today?: ")

    if command == "log off" or command =="quit":
        print("You have logged off")
        main()
    else:
        print("Unknown command")
        commands()
main()

Answer 1

老兄，你正在检查静态值的用户名和密码。

 if username == "username" and password == "password":

因此，任何其他用户名或密码都会给您错误：

用户名和/或密码不正确。请再试一次！

再次使用“username”作为用户名，使用“password”作为密码，你肯定不会得到错误。

python中的用户名和密码失败

1 个答案: