#!/usr/bin/env python
import ogr

geom = ogr.Geometry( type = ogr.wkbLinearRing )
geom.AddPoint( 0, 0)
geom.AddPoint( 10, 0)
geom.AddPoint( 10, 10)
geom.AddPoint( 0, 10)
geom.AddPoint( 0, 0)

print geom.GetGeometryType()
print geom.GetCoordinateDimension()

area = geom.GetArea()
print "Area: %f" % area

geom.Destroy()