I just NMU'd 1:6.0.10-1.1 which fixes this bug. Here's the relevant part of the changelog
python-mode (1:6.0.10-1.1) unstable; urgency=low * Non-maintainer upload * Fixed upgrade failure (Closes: #679591) -- Hilko Bengen <ben...@debian.org> Mon, 16 Jul 2012 21:12:00 +0200 Cheers, -Hilko -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org