ping: Victor or Yuri, do agree that asyncio.CancelledError should be documented?  I know that this duality has confused me in the past as well.  I don't know if having it documented would have helped me ahead of time, but at least it could have cleared up my puzzlement as to why I was seeing a concurrent.futures exception when I didn't think I was using concurrent.futures :)

I do wonder what the OPs actual problem was with catching the exception.