code: def parse_keyring(self, namespace=None):
          
          results = {}
          if not keyring:
              return results
          if not namespace:
              namespace = self.prog
          for option in self._options:
              secret = keyring.get_password(namespace, option.name)
              if secret:
                  results[option.dest] = option.type(secret)
          return results
docs: Find settings from keyring.