/usr/lib/python2.7/dist-packages/tkinter/ is in python-future 0.15.2-4ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/tkinter/__init__.py
/usr/lib/python2.7/dist-packages/tkinter/colorchooser.py
/usr/lib/python2.7/dist-packages/tkinter/commondialog.py
/usr/lib/python2.7/dist-packages/tkinter/constants.py
/usr/lib/python2.7/dist-packages/tkinter/dialog.py
/usr/lib/python2.7/dist-packages/tkinter/dnd.py
/usr/lib/python2.7/dist-packages/tkinter/filedialog.py
/usr/lib/python2.7/dist-packages/tkinter/font.py
/usr/lib/python2.7/dist-packages/tkinter/messagebox.py
/usr/lib/python2.7/dist-packages/tkinter/scrolledtext.py
/usr/lib/python2.7/dist-packages/tkinter/simpledialog.py
/usr/lib/python2.7/dist-packages/tkinter/tix.py
/usr/lib/python2.7/dist-packages/tkinter/ttk.py