Access Blender UV Mapping with Python

Can we access Blenders uv textures in the material settings with python scripts? If so then maybe we could add this option to a script that exports a rib file or a Yafray file. If you have keeping up with the releases of the “Extractor” script for Yafray one thing that it seemed to lack the last time that I checked it out was the ability to export Blender assigned uv maps to Yafray. This is just one of the areas that I want to target as I gain more python skills.