rollback - 我用sanic+tortoise-orm开发了一个系统，但是插入或更新数据时出现错误，如何让它回滚？

Question

try:
    user = await User.create(
        username=username,
        password=password,
        update_time=time_now()
    )

    await UserInfo.create(
        user_id=user.id,
        name=name, phone=phone,
        age=age, gender=gender,
        email=email, birthday=birthday,
        update_time=time_now()
    )
    msg = "User:{} registered success !".format(username)
    logger.info(msg)
except DatabaseError as e:
    msg = "Database error：{}".format(e, e.__traceback__.tb_lineno)
    logger.error(msg)
    return make_error_response(code=RespCode.database_error, message=msg)
except Exception as e:
    msg = "Add user: {} info failed：{}, line: {}".format(username, e, e.__traceback__.tb_lineno)
    logger.error(msg)
    # rollback()
    return make_error_response(code=RespCode.user_register_failed, message=msg)

像这段代码，用户创建成功，但是在创建用户信息时，一个字段太长导致创建失败，用户没有回滚。对了，我没发现龟龟有回滚的功能，没必要吧？