Tkinter module not found on Ubuntu
The answer is:
The think is you’re on Ubuntu. You probably need to run update-python-modules to update your Tkinter module for Python 3.
EDIT: Running update-python-modules
Make sure you have python-support installed:
sudo apt-get install python-support
Now, run update-python-modules with the -a option to rebuild all the modules:
sudo update-python-modules -a
I cannot guarantee all your modules will build though, since there are some API changes between Python 2 and Python 3.