/usr/lib/python3/dist-packages/psutil/tests/ is in python3-psutil 5.0.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/psutil/tests/__init__.py
/usr/lib/python3/dist-packages/psutil/tests/runner.py
/usr/lib/python3/dist-packages/psutil/tests/test_bsd.py
/usr/lib/python3/dist-packages/psutil/tests/test_linux.py
/usr/lib/python3/dist-packages/psutil/tests/test_memory_leaks.py
/usr/lib/python3/dist-packages/psutil/tests/test_misc.py
/usr/lib/python3/dist-packages/psutil/tests/test_osx.py
/usr/lib/python3/dist-packages/psutil/tests/test_posix.py
/usr/lib/python3/dist-packages/psutil/tests/test_process.py
/usr/lib/python3/dist-packages/psutil/tests/test_sunos.py
/usr/lib/python3/dist-packages/psutil/tests/test_system.py
/usr/lib/python3/dist-packages/psutil/tests/test_windows.py