code: async def reset_type_codec(self, typename, *, schema='public'):
          
  
          typeinfo = await self.fetchrow(
              introspection.TYPE_BY_NAME, typename, schema)
          if not typeinfo:
              raise ValueError('unknown type: {}.{}'.format(schema, typename))
  
          oid = typeinfo['oid']
  
          self._protocol.get_settings().remove_python_codec(
              oid, typename, schema)
  
          # Statement cache is no longer valid due to codec changes.
          self._drop_local_statement_cache()
docs: Reset *typename* codec to the default implementation.
  
          :param typename:
              Name of the data type the codec is for.
  
          :param schema:
              Schema name of the data type the codec is for
              (defaults to ``'public'``)
  
          .. versionadded:: 0.12.0