/usr/lib/python2.7/dist-packages/apptools/undo/ is in python-apptools 4.2.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/apptools/undo/__init__.py
/usr/lib/python2.7/dist-packages/apptools/undo/abstract_command.py
/usr/lib/python2.7/dist-packages/apptools/undo/action/
/usr/lib/python2.7/dist-packages/apptools/undo/action/__init__.py
/usr/lib/python2.7/dist-packages/apptools/undo/action/abstract_command_stack_action.py
/usr/lib/python2.7/dist-packages/apptools/undo/action/api.py
/usr/lib/python2.7/dist-packages/apptools/undo/action/command_action.py
/usr/lib/python2.7/dist-packages/apptools/undo/action/redo_action.py
/usr/lib/python2.7/dist-packages/apptools/undo/action/undo_action.py
/usr/lib/python2.7/dist-packages/apptools/undo/api.py
/usr/lib/python2.7/dist-packages/apptools/undo/command_stack.py
/usr/lib/python2.7/dist-packages/apptools/undo/i_command.py
/usr/lib/python2.7/dist-packages/apptools/undo/i_command_stack.py
/usr/lib/python2.7/dist-packages/apptools/undo/i_undo_manager.py
/usr/lib/python2.7/dist-packages/apptools/undo/undo_manager.py