/usr/lib/python2.7/dist-packages/persistent/tests/ is in python-persistent 4.1.1-1build2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/persistent/tests/__init__.py
/usr/lib/python2.7/dist-packages/persistent/tests/attrhooks.py
/usr/lib/python2.7/dist-packages/persistent/tests/cucumbers.py
/usr/lib/python2.7/dist-packages/persistent/tests/test_list.py
/usr/lib/python2.7/dist-packages/persistent/tests/test_mapping.py
/usr/lib/python2.7/dist-packages/persistent/tests/test_persistence.py
/usr/lib/python2.7/dist-packages/persistent/tests/test_picklecache.py
/usr/lib/python2.7/dist-packages/persistent/tests/test_ring.py
/usr/lib/python2.7/dist-packages/persistent/tests/test_timestamp.py
/usr/lib/python2.7/dist-packages/persistent/tests/test_wref.py
/usr/lib/python2.7/dist-packages/persistent/tests/utils.py