[Python-Dev] PEP 492: async/await in Python; version 4

[Yury Selivanov]

On 2015-04-30 5:16 AM, Greg Ewing wrote:
> Yury Selivanov wrote:
>
>> 3. CO_NATIVE_COROUTINE flag. This enables us to disable
>> __iter__ and __next__ on native coroutines while maintaining
>> full backwards compatibility.
>
> I don't think you can honestly claim "full backwards
> compatibility" as long as there are some combinations
> of old-style and new-style code that won't work
> together. You seem to be using your own personal
> definition of "full" here.
>

Well, using next() and iter() on coroutines in asyncio
code is something esoteric.  I can't even imagine
why you would want to do that.

Yury