Code for programmatically working with Maya shaderfx nodes
the sfx folder contains a module for working with Maya's shaderFX shader graphs. Place it on your maya script path and import it.
Simple unittests are provided in the tests.py file. CD to the location of the tests file and sfx module and call mayapy.exe tests.py
See LICENSE file for license. Short version: it's the MIT license, so include the copyright but use as you see fit.
(c) 2015-16 Steve Theodore