根据特定的行检查变量。蟒蛇

时间:2018-07-07 01:44:29

标签: python python-3.x

我正在用Python 3做游戏。我需要查看玩家输入的用户名和密码是否正确。用户名和密码位于文件中,用户注册后将放置在该文件中。

def login_signup():

    loginsignup = input("Do you want to login or sign up? Enter L/S: ")

    if loginsignup == "S":  

        userpassA = open("USERPASS.txt.txt", "a")

        user = input("Please enter a username: ")
        password = input("Please enter a password: ")

        userpassA.write(user)
        userpassA.write("\n")
        userpassA.write(password)
        userpassA.close()

    if loginsignup == "L":  # Here is where it needs to be.

        userpassR = open("USERPASS.txt.txt", "r")
        lines = userpassR.readline()

        username = input("Username: ")
        # passwordl = input("Password: ")

        if username == lines[0]:
            print("Right.")

        userpassR.close()

1 个答案:

答案 0 :(得分:0)

每次调用 userpassR.readline()时,文件的下一行将被读取,而不是一次读取所有行。假设文件“ USERPASS.txt.txt”中的内容为

if (c + 1.0):
    k = (c - 1.0) / (c + 1.0)
else:
    k = 0

,第一次调用 userpassR.readline()时,将返回字符串user1 mypswd 。下次调用它时,返回值为'user1\n'

因此,要修改您的代码:

'mypswd'