Until I release 1.0, I suggest cloning the repository at github:
$ git clone git://github.com/mw44118/pitz.git
Then, install pitz like this:
$ cd pitz
$ python setup.py develop
You might need sudo in front of that second line if you’re not using a virtualenv.
Finally, there’s an optional bash_completion.bash file that sets up tab completion. To use that, add these lines to the end of your ~/.bashrc:
# Pitz stuff to enable tab completion on fragments.
source $HOME/checkouts/pitz/bash_completion.bash
Of course, you may need to change that line to point to where that file lives on your box.