code: def _handle_status(self, key, value):
          
          if key in ("USERID_HINT", "NEED_PASSPHRASE",
                     "GET_HIDDEN", "SIGEXPIRED", "KEYEXPIRED",
                     "GOOD_PASSPHRASE", "GOT_IT", "GET_LINE"):
              pass
          elif key in ("BAD_PASSPHRASE", "MISSING_PASSPHRASE"):
              self.status = key.replace("_", " ").lower()
          else:
              self.status = 'failed'
              raise ValueError("Unknown status message: %r" % key)
docs: Parse a status code from the attached GnuPG process.
  
          :raises: :exc:`~exceptions.ValueError` if the status message is unknown.