I got the geometry of a feature of the shapefile, and i want to save that geometry in the postgis (in WKB formats like it happens when we import shapefiles using shp2pgsql and psql commands). How do I convert then

To get Goemtry i have used osgeo library eg: feat = layer.GetFeature(0) geometry = feat.GetGeometryRef() and I have got <osgeo.ogr.Geometry; proxy of <Swig Object of type 'OGRGeometryShadow *' at 0x0096A2D8> >

so how will convert it into the WKB geometry... I am using Python for this .