> pydot is pretty amazing in its abilitity to make nice, readable renderings of graph data. > http://dkbza.org/pydot.html Well It's thanks to graphwiz.. http://www.research.att.com/sw/tools/graphviz/ I suggest to read the DOT language specification ( it is really easy ) and to roll up your own python script to build your dot file. Fabrizio Milo aka Misto