/usr/lib/python2.7/dist-packages/firmware_addon_dell/dellbios.py is in firmware-addon-dell 2.2.9-0ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/firmware_addon_dell/../../../../share/pyshared/firmware_addon_dell/dellbios.py