/usr/lib/python2.7/dist-packages/seascope/ui/goto_line.ui is in seascope 0.8-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/seascope/ui/../../../../../share/pyshared/seascope/ui/goto_line.ui