def get(self, key, default=None):
        """
        The memcached "get" command, but only for one key, as a convenience.

        Args:
          key: str, see class docs for details.
          default: value that will be returned if the key was not found.

        Returns:
          The value for the key, or default if the key wasn't found.
        """
        return self._fetch_cmd(b'get', [key], False).get(key, default)