def QA_user_sign_in(username, password):
    """用户登陆
    不使用 QAUSER库
    只返回 TRUE/FALSE
    """
    #user = QA_User(name= name, password=password)
    cursor = DATABASE.user.find_one(
        {'username': username, 'password': password})
    if cursor is None:
        QA_util_log_info('SOMETHING WRONG')
        return False
    else:
        return True