Hi I've just written a v0.1 of a lib2to3-based tool for converting trollius code to run with asyncio. I plan to release it on PyPI in the near future, but in the meantime it's available at https://github.com/bmerry/trollius-fixers. Comments are welcome - either things that don't work (lib2to3 can be a bit finicky and I've already run into a number of corner cases) or code review comments from people familiar with lib2to3 who might have ideas on simplifying the code.
Bruce