/usr/lib/python2.7/dist-packages/networkx/drawing/ is in python-networkx 1.9+dfsg1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/networkx/drawing/__init__.py
/usr/lib/python2.7/dist-packages/networkx/drawing/layout.py
/usr/lib/python2.7/dist-packages/networkx/drawing/nx_agraph.py
/usr/lib/python2.7/dist-packages/networkx/drawing/nx_pydot.py
/usr/lib/python2.7/dist-packages/networkx/drawing/nx_pylab.py
/usr/lib/python2.7/dist-packages/networkx/drawing/tests/
/usr/lib/python2.7/dist-packages/networkx/drawing/tests/test_agraph.py
/usr/lib/python2.7/dist-packages/networkx/drawing/tests/test_layout.py
/usr/lib/python2.7/dist-packages/networkx/drawing/tests/test_pydot.py
/usr/lib/python2.7/dist-packages/networkx/drawing/tests/test_pylab.py