No - but you've set me on the right track, there looks to be a pykdeuic4-3.4 executable (I had assumed if there were anything like that it would be a case of update-alternatives, but apparently not?). Will try that when I get home.
Fair enough. E.g. I was assuming the reason PyQwt didn't exist for python3 was because Ubunty hadn't packaged it, but having looked further it seems the library itself is unmaintained.