def __sub__(self, other):
        return self.difference(other)

    # g = g1 ^ g2
Construct a :class:`Link` from a url.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/contrib/gis/geos/geometry.py/GEOSGeometry.__sub__--crossover with--dataset/ETHPy150Open pantsbuild/pex/pex/link.py/Link.__init__