In order to use openbandparams, you must having a working python distribution installed. Python 3 support has not yet been tested, so Python 2.7 is suggested. Here are a couple different ways to install openbandparams:
Basic functionality has no prerequisites other than python, but several of the examples make use of numpy and matplotlib, so you may want to install them, as well.
Once you have openbandparams installed, check out the Tutorial to get acquainted.