Now when most distros have python3 in their repos and a few already made it the default, not supporing python3 is no longer an option. Both 3 and 2.7 (and no older) should be supported.
The main offender is old style exception syntax. You may consider running it through the 2to3 tool to simplify migration.
Your core dependecy exscript is not compatible with python3. It seems like someone started working on it but didn't finish and abandoned the port. I guess you don't want to port it, so I guess python3 support is on hold for now :/
@afics so maybe py3 support should be on hold...but this task just about py2 style exception syntax therefore this task is finished,right?