for past few days, I've been working on python3-compat patch for sssd. The patch 
is attached to the issue that requests this feature .
- The patch tries to maintain backward compatibility for Python 2.6 and 2.7 - I admit I
only tested 2.7 so far, but it seemed to work ok.
- I didn't yet solve the build part - for now, I just handedit configure.ac to set
"PYTHON=python3" and src/external/python.m4 to set "AC_PATH_PROG(PYTHON,
python3)" and compile with that.
- I managed to run Python tests in src/tests except python-test.py itself (it says
"OSError: [Errno 5] Could not initialize connection to the confdb" and I
didn't yet investigate why that happens).
- To run tests, one must modify the hashbangs to /usr/bin/python3 (I now see that I left
one of these in the actual patch, so please disregard that).
I'd like to ask you, sssd devels, to give me some comments on the patch (or ask
questions) and if you have some time to spare, doing more extensive testing would also be
Bohuslav "Slavek" Kabrda.