/usr/lib/python3/dist-packages/rackdiag/tests/ is in python3-nwdiag 1.0.3-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/rackdiag/tests/diagrams/
/usr/lib/python3/dist-packages/rackdiag/tests/diagrams/autonumber.diag
/usr/lib/python3/dist-packages/rackdiag/tests/diagrams/multi_rackitem.diag
/usr/lib/python3/dist-packages/rackdiag/tests/diagrams/multi_racks.diag
/usr/lib/python3/dist-packages/rackdiag/tests/diagrams/oneliner.diag
/usr/lib/python3/dist-packages/rackdiag/tests/diagrams/oneliner_with_quoted.diag
/usr/lib/python3/dist-packages/rackdiag/tests/diagrams/oneliner_without_last_semicolon.diag
/usr/lib/python3/dist-packages/rackdiag/tests/diagrams/rack_height.diag
/usr/lib/python3/dist-packages/rackdiag/tests/diagrams/rack_height_for_multi_racks.diag
/usr/lib/python3/dist-packages/rackdiag/tests/diagrams/simple.diag
/usr/lib/python3/dist-packages/rackdiag/tests/test_builder.py
/usr/lib/python3/dist-packages/rackdiag/tests/test_generate_diagram.py
/usr/lib/python3/dist-packages/rackdiag/tests/test_pep8.py
/usr/lib/python3/dist-packages/rackdiag/tests/test_rst_directives.py