How do I store the data in another txt file

[blacklight]

Hi I'm trying to figure out how I can use a txt files for my users and passwords. I have a function that let's you create a new user, however I want that new user to be put in a txt file, so when you login the programm checks if the username and password are in the txt file's list. How do I go about doing this?

# making a login system.


#ask account prompt/function.
ask_account = input("Do you have an account? ")

#class to create new users
class users:
    def __init__(self, username, password):
        self.username = username
        self.password = password

# This is the user list.
user_list = [
users("Sem", "ben8"),
users("Soar", "ben7")
]

# continuing function to access your account
if ask_account == "yes":
    username_ = input("What is your username: ")
    password = input("What is your password: ")
    for element in user_list:
        if username_ == element.username and password == element.password:
            print("Welcome {}".format(element.username) +"." + "You are logged in!")
        elif username_ != element.username or password != element.password:
            print("Invalid username or password!")

# continuing function to create a new account and access your new account
if ask_account == "no":
    user_list.append(users(input("insert username: "), input("insert password ")))
    print("You have created a new account!")
    username_ = input("What is your username: ")
    password = input("What is your password: ")
    for x in user_list:
        if username_ == x.username and password == x.password:
            print("Welcome {}".format(x.username) +"." + "You are logged in!")
        elif username_ != x.username or password != x.password:
            print("Invalid username or password!")

[Larz60+]

you should use getpass, to keep secret see: https://pymotw.com/3/getpass/
there is a bit on how to pipe to a file.