This is a hackable Python library of functions implementing calculations with elements of tensor space in the style of the 1993 book Free Lie Algebras by Christophe Reutenauer.
To install from github you should be able to do::
pip install --no-cache git+git://github.com/bottler/free-lie-algebra-py
More likely you want to check out this repository and use the file free_lie_algebra.py.
The top of the file has more information.