/usr/lib/python2.7/dist-packages/traitsui/tests/ is in python-traitsui 4.5.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/traitsui/tests/__init__.py
/usr/lib/python2.7/dist-packages/traitsui/tests/_tools.py
/usr/lib/python2.7/dist-packages/traitsui/tests/editors/
/usr/lib/python2.7/dist-packages/traitsui/tests/editors/__init__.py
/usr/lib/python2.7/dist-packages/traitsui/tests/editors/test_code_editor.py
/usr/lib/python2.7/dist-packages/traitsui/tests/editors/test_csv_editor.py
/usr/lib/python2.7/dist-packages/traitsui/tests/editors/test_default_override.py
/usr/lib/python2.7/dist-packages/traitsui/tests/editors/test_liststr_editor_selection.py
/usr/lib/python2.7/dist-packages/traitsui/tests/editors/test_range_editor_spinner.py
/usr/lib/python2.7/dist-packages/traitsui/tests/editors/test_range_editor_text.py
/usr/lib/python2.7/dist-packages/traitsui/tests/editors/test_tree_editor.py
/usr/lib/python2.7/dist-packages/traitsui/tests/null_backend/
/usr/lib/python2.7/dist-packages/traitsui/tests/null_backend/__init__.py
/usr/lib/python2.7/dist-packages/traitsui/tests/null_backend/test_font_trait.py
/usr/lib/python2.7/dist-packages/traitsui/tests/test_actions.py
/usr/lib/python2.7/dist-packages/traitsui/tests/test_labels.py
/usr/lib/python2.7/dist-packages/traitsui/tests/test_layout.py
/usr/lib/python2.7/dist-packages/traitsui/tests/test_regression.py
/usr/lib/python2.7/dist-packages/traitsui/tests/test_shadow_group.py
/usr/lib/python2.7/dist-packages/traitsui/tests/test_tuple_editor.py
/usr/lib/python2.7/dist-packages/traitsui/tests/test_ui.py
/usr/lib/python2.7/dist-packages/traitsui/tests/test_visible_when_layout.py