As of December 2007, Guido did not believe that you or anyone else cared
enough about asyncore/asynchat to update them to py3k:
http://mail.python.org/pipermail/python-dev/2007-December/075574.html

Thankfully there's been a resurgence of activity on the modules, and
they're well out of danger now.

I _am_not_ proposing that passing unicode into asyncore should do
anything other than fail. I have never proposed such, and my patch
tightened those constraints rather than loosening them. Please stop
beating that horse; it's dead.

On a more positive note, I'll put together that docstring patch for you
at the same time I'm evaluating whether any of the rest of my patch
remains necessary.