/usr/share/pyshared/tvtk/plugins/scene/ is in mayavi2 4.1.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pyshared/tvtk/plugins/scene/__init__.py
/usr/share/pyshared/tvtk/plugins/scene/i_scene_manager.py
/usr/share/pyshared/tvtk/plugins/scene/preferences.ini
/usr/share/pyshared/tvtk/plugins/scene/scene_editor.py
/usr/share/pyshared/tvtk/plugins/scene/scene_manager.py
/usr/share/pyshared/tvtk/plugins/scene/scene_plugin.py
/usr/share/pyshared/tvtk/plugins/scene/ui/
/usr/share/pyshared/tvtk/plugins/scene/ui/__init__.py
/usr/share/pyshared/tvtk/plugins/scene/ui/actions.py
/usr/share/pyshared/tvtk/plugins/scene/ui/scene_preferences_page.py
/usr/share/pyshared/tvtk/plugins/scene/ui/scene_ui_action_set.py
/usr/share/pyshared/tvtk/plugins/scene/ui/scene_ui_plugin.py