/usr/lib/python2.7/dist-packages/subunit/tests/ is in python-subunit 1.1.0-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/subunit/tests/__init__.py
/usr/lib/python2.7/dist-packages/subunit/tests/sample-script.py
/usr/lib/python2.7/dist-packages/subunit/tests/sample-two-script.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_chunked.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_details.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_filters.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_output_filter.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_progress_model.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_run.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_subunit_filter.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_subunit_stats.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_subunit_tags.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_tap2subunit.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_test_protocol.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_test_protocol2.py
/usr/lib/python2.7/dist-packages/subunit/tests/test_test_results.py