My very first "thing" what I'm somewhat proud of, after a week udomy class. Register

[Anarab]

Pretty good for one week keep going
just a quick tip tho make your code more readable first off by using a linter as with imports it a better practice to put them all at the top of the file
A linted python code should look like this

import os
import time


def log_in():
    return ()


print("Register:")
ui = []
pw = []
while True == 1:
    userid = input("Give you User name: ")
    password = input("Give your password: ")

    if userid in ui:
        print('Userid already in use!')
        True == 1
    else:
        print('You registered successfully!!')
        ui.insert(0, userid)
        pw.insert(0, password)
        print(ui)
        print(pw)
        #True == 1
        break
time.sleep(2)
os.system('clear')
while True == 1:
    print("Log In:")
    if input("User ID: ") in ui:
        if input("Password: ") in pw:
            print("Succesfull LogIn!")

            import webbrowser
            webbrowser.open('http://www.youtube.com', new=2)
            break
            True == 4
        else:
            print("Wrong User name or password!! Try again!!")

I just put that in my editor (Visual studio code) and it linted it on save