example GATT code to talk with a sensortag

Hi,

Sorry for the newbie question.  I stumbled upon a TI sensortag and was able
to communicate with it using the gatttool.  Now I am trying to figure out
how to build an app around that.  Googling has shown me lots of examples of
folks using expect scripts (around the gatttool).

I was hoping for something in C or python.  Is there an example
program/script around that I can copy and expand to get me started?

Thanks!

Cheers,
Don