import gradio as gr
import os 

def get_accepted_username_passwords():
    username__passwords = [os.environ.get(f'USER_{i}', None) for i in range(900) if os.environ.get(f'USER_{i}', False)]
    return username__passwords
    
def auth_verification(username, password):
    username__password = f'{username}__{password}'
    username__passwords_accepted = get_accepted_username_passwords()
    allowed = username__password in username__passwords_accepted
    return allowed