code: def get_geometry_from_mp_symbol(self, mp_symbol):
          
          for gg in self.cg_list:
              if gg.mp_symbol == mp_symbol:
                  return gg
          raise LookupError(
              'No coordination geometry found with mp_symbol "{symbol}"'.format(
                  symbol=mp_symbol))
docs: Returns the coordination geometry of the given mp_symbol.
          :param mp_symbol: The mp_symbol of the coordination geometry.