/usr/lib/python3/dist-packages/gnome_sudoku/ is in gnome-sudoku 1:3.10.2-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/gnome_sudoku/__init__.py
/usr/lib/python3/dist-packages/gnome_sudoku/colors.py
/usr/lib/python3/dist-packages/gnome_sudoku/dancer.py
/usr/lib/python3/dist-packages/gnome_sudoku/defaults.py
/usr/lib/python3/dist-packages/gnome_sudoku/defs.py
/usr/lib/python3/dist-packages/gnome_sudoku/dialog_swallower.py
/usr/lib/python3/dist-packages/gnome_sudoku/game_selector.py
/usr/lib/python3/dist-packages/gnome_sudoku/gnome_sudoku.py
/usr/lib/python3/dist-packages/gnome_sudoku/gsudoku.py
/usr/lib/python3/dist-packages/gnome_sudoku/gtk_goodies/
/usr/lib/python3/dist-packages/gnome_sudoku/gtk_goodies/Undo.py
/usr/lib/python3/dist-packages/gnome_sudoku/gtk_goodies/__init__.py
/usr/lib/python3/dist-packages/gnome_sudoku/gtk_goodies/dialog_extras.py
/usr/lib/python3/dist-packages/gnome_sudoku/main.py
/usr/lib/python3/dist-packages/gnome_sudoku/number_box.py
/usr/lib/python3/dist-packages/gnome_sudoku/pausable.py
/usr/lib/python3/dist-packages/gnome_sudoku/printing.py
/usr/lib/python3/dist-packages/gnome_sudoku/saver.py
/usr/lib/python3/dist-packages/gnome_sudoku/simple_debug.py
/usr/lib/python3/dist-packages/gnome_sudoku/sudoku.py
/usr/lib/python3/dist-packages/gnome_sudoku/sudoku_maker.py
/usr/lib/python3/dist-packages/gnome_sudoku/sudoku_thumber.py
/usr/lib/python3/dist-packages/gnome_sudoku/timer.py
/usr/lib/python3/dist-packages/gnome_sudoku/tracker_info.py