Whilst installing other non-Bind9 packages on Debian, I've often run into this error:
new installation of xyz-python-pkg; /usr/lib/python2.7/site-packages is a directory
which is expected a symlink to /usr/local/lib/python2.7/dist-packages.
please find the package shipping files in /usr/lib/python2.7/site-packages and
file a bug report to ship these in /usr/lib/python2.7/dist-packages instead
aborting installation of xyz-python-pkg
Following the Debian package manger advice, I'm submitting this merge request with a fix.