code: def _ext_attr_to_partial(self, name, kwarg_key):
          
          try:
              intval = int(name)
          except ValueError:
              # Try as an extended name_data name.
              info = name_data.get(name, None)
              if info is None:
                  # Not an int value or name_data name.
                  return None
              kws = {kwarg_key: info['code']}
              return partial(self.chained, **kws)
          # Integer str passed, use the int value.
          kws = {kwarg_key: intval}
          return partial(self.chained, **kws)
docs: Convert a string like '233' or 'aliceblue' into partial for
              self.chained.