/usr/lib/python2.7/dist-packages/skimage/graph/ is in python-skimage 0.10.1-2build1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/skimage/graph/__init__.py
/usr/lib/python2.7/dist-packages/skimage/graph/mcp.py
/usr/lib/python2.7/dist-packages/skimage/graph/setup.py
/usr/lib/python2.7/dist-packages/skimage/graph/spath.py
/usr/lib/python2.7/dist-packages/skimage/graph/tests/
/usr/lib/python2.7/dist-packages/skimage/graph/tests/test_anisotropy.py
/usr/lib/python2.7/dist-packages/skimage/graph/tests/test_connect.py
/usr/lib/python2.7/dist-packages/skimage/graph/tests/test_flexible.py
/usr/lib/python2.7/dist-packages/skimage/graph/tests/test_heap.py
/usr/lib/python2.7/dist-packages/skimage/graph/tests/test_mcp.py
/usr/lib/python2.7/dist-packages/skimage/graph/tests/test_spath.py