@property
    def ellipsoid(self):
        if gdal.HAS_GDAL:
            return self.srs.ellipsoid
        else:
            m = self.spheroid_regex.match(self.wkt)
            if m: return (float(m.group('major')), float(m.group('flattening')))
            else: return None
Returns a tuple of the ellipsoid parameters:
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/contrib/gis/db/backends/base.py/SpatialRefSysMixin.ellipsoid