/usr/lib/python2.7/dist-packages/dolfin/fem/ is in python-dolfin 2017.2.0.post0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/dolfin/fem/__init__.py
/usr/lib/python2.7/dist-packages/dolfin/fem/adaptivesolving.py
/usr/lib/python2.7/dist-packages/dolfin/fem/assembling.py
/usr/lib/python2.7/dist-packages/dolfin/fem/assembling_local.py
/usr/lib/python2.7/dist-packages/dolfin/fem/bcs.py
/usr/lib/python2.7/dist-packages/dolfin/fem/errorcontrolgenerator.py
/usr/lib/python2.7/dist-packages/dolfin/fem/form.py
/usr/lib/python2.7/dist-packages/dolfin/fem/formmanipulations.py
/usr/lib/python2.7/dist-packages/dolfin/fem/interpolation.py
/usr/lib/python2.7/dist-packages/dolfin/fem/norms.py
/usr/lib/python2.7/dist-packages/dolfin/fem/projection.py
/usr/lib/python2.7/dist-packages/dolfin/fem/solving.py