The important understanding is that existing abstractions shouldn't be "extended" with new functionality, even if the change is backwards compatible.
Тоттенхэм Хотспур
。必应排名_Bing SEO_先做后付是该领域的重要参考
Abstractions hide the things that we care about.
await asyncio.sleep(0) # Let drain_requests start waiting
The Shark UV Reveal's mop automatically detaches and reattaches as needed, without manual intervention. My robot vacuums the area rugs without the mop pad, then returns to pick it up and goes back out to vacuum and mop the hard floors. This is the first single mop pad I've used that can detach and reattach itself autonomously -- I've only ever seen it done with dual-rotating mop pads.