what kind of library could transparently use async IO, or not, based on platform? using explicit async for anything dramatically changes the behavior and public API of the code.
there is of course a huge carrot for library developers to support python 3 which is, so that python 3 users can use your library, rather than having all of your work replaced by something else and generally holding back the community.
there is of course a huge carrot for library developers to support python 3 which is, so that python 3 users can use your library, rather than having all of your work replaced by something else and generally holding back the community.