The writer has a simple interface: write(), writev() for batched writes, end() to signal completion, and abort() for errors. That's essentially it.
Кадр: Telegram-канал Следственного комитета Российской Федерации
。关于这个话题，PDF资料提供了深入分析
asyncio.Condition lets consumers wait on arbitrary predicates:
The U.S. benchmark for crude oil rose from about $67 to $71 per barrel on March 2. But it started the year at $57 per barrel and has steadily risen because of escalating U.S.-Iran tensions.