def check_username()

in tacacs-F4.0.4.28/do_auth.py [0:0]


def check_username(config, log_file, user_name):
    if not config.has_section('users'):
        log_file.write(strftime("%Y-%m-%d %H:%M:%S: ")
                + "Error: users section doesn't exist!")
        sys.exit(1)
    if config.has_option('users', user_name):
        return True
    else:
        return False