Py6S is a Python programming language interface to the 6S Radiative Transfer Model. It allows you to run many 6S simulations using a simple Python syntax, rather than dealing with the rather cryptic 6S input and output files. As well as generally making it easier to use 6S, Py6S adds new features including:
Py6S was originally created as part of my PhD, to allow me to easily run a number of 6S simulations - to perform sensitivity analyses, for example - but has now been extended to cover the entire range of 6S functionality. Anything that can be done using the standard 6S model can be done through Py6S.
Py6S is described in a paper which is currently In Press at Computers and Geosciences - the reference will be added here when it is officially released. This reference should be cited whenever Py6S is used in any academic work.
To get started, go to the documentation at the Py6S ReadTheDocs page. The installation instructions there will take you through how to compile the main 6S executable for your system (Windows, Linux and OS X) and then how to install the Py6S interface from the Python Package Index. The code is open-source, released under the LGPL license, and is available at the Py6S Github Repository.
If you have any problems installing or using Py6S then please contact me at email@example.com - I'd love to help!