I have a text file with lat/lon table values and want to use this information to generate a fishnet using python. Any heads up would be deeply appreciative. Also please point to if this has been already addressed.
If your fishnet is evenly spaced, you can use the Create Fishnet geoprocessing tool in ArcMap to accomplish this.
If you have a more complicated fishnet, you can use the basic geometry writing functionality of ArcPy to create a fishnet of points, polylines or polygons.