/usr/lib/python3/dist-packages/networkx/readwrite/tests/ is in python3-networkx 1.11-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_adjlist.py
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_edgelist.py
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_gexf.py
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_gml.py
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_gpickle.py
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_graph6.py
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_graphml.py
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_leda.py
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_p2g.py
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_pajek.py
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_shp.py
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_sparse6.py
/usr/lib/python3/dist-packages/networkx/readwrite/tests/test_yaml.py