Correction, can you run
sudo /var/lib/dpkg/info/python-cups.postinst
and see whether this solves the problem? In this case this bug would be the same as bug 335543.
Correction, can you run
sudo /var/lib/ dpkg/info/ python- cups.postinst
and see whether this solves the problem? In this case this bug would be the same as bug 335543.