code: def FromLatLng(lat, lng):
      
      phi = lat * (math.pi / 180.0)
      theta = lng * (math.pi / 180.0)
      cosphi = math.cos(phi)
      return Point(math.cos(theta) * cosphi,
                   math.sin(theta) * cosphi,
                   math.sin(phi))
docs: Returns a new point representing this latitude and longitude under
      a spherical Earth model.