code: def hydrate_point(srid, *coordinates):
      
      try:
          point_class, dim = __srid_table[srid]
      except KeyError:
          point = Point(coordinates)
          point.srid = srid
          return point
      else:
          if len(coordinates) != dim:
              raise ValueError("SRID %d requires %d coordinates (%d provided)" % (srid, dim, len(coordinates)))
          return point_class(coordinates)
docs: Create a new instance of a Point subclass from a raw
      set of fields. The subclass chosen is determined by the
      given SRID; a ValueError will be raised if no such
      subclass can be found.