/usr/lib/python2.7/dist-packages/pydoctor/templatewriter/pages/attributechild.py is in python-pydoctor 0.5b1+bzr603-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/pydoctor/templatewriter/pages/../../../../../../share/pyshared/pydoctor/templatewriter/pages/attributechild.py