Message 355991 - Python tracker

> Is it be possible to backport this inside the standard ProactorEventLoop of Python-3.8.1 ? As things are currently broken, no kitten would be armed https://github.com/python-trio/trio/pull/1269

No, we don't add features to minor releases.

If you need add_reader(), your code works with Python 3.7 but fails with 3.8, you can use the following code to ensure that you use the SelectorEventLoop:

if sys.platform == 'win32':
  asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())