I'm considering writing a graphical front-end for low-end wearables (why should the wealthy have all the fun) featuring our prized Raspberry Pi. I know that TK is the standard for python, however I don't know if that needs to be installed or if it's already available. Is it?
Tkinter is usually installed as part of Python, however it is not always included by default in builds for Raspberry Pi. For example it would seem fairly pointless to include it in a build targeted specifically at headless applications.
It is simple enough to find out (and fix if necessary) though. You can start Python from the command line (with
import Tkinter. If you get an error message then exit out of Python and call
sudo apt-get install python-tk to install it.