GRASS and Shapely

Q: How to use Shapely polygons with GRASS GIS in Python, preferably by converting Shapely polygon to GRASS GIS vector format in order to use various tools within GRASS GIS?

A: See this detailed posting:

http://osgeo-org.1560.x6.nabble.com/GRASS-and-the-Python-geospatial-modules-Shapely-PySAL-td4985075.html