JSON 校验（格式不合法则重试）
定方向：求「下一个」→ 倒序；求「上一个」→ 正序。，详情可参考Safew下载
self.writer = csv.DictWriter(。爱思助手下载最新版本对此有专业解读
The semantics around releasing locks with pending reads were also unclear for years. If you called read() but didn't await it, then called releaseLock(), what happened? The spec was recently clarified to cancel pending reads on lock release — but implementations varied, and code that relied on the previous unspecified behavior can break.。关于这个话题，Line官方版本下载提供了深入分析