def running(self):
        """
        Tells whether the backend process is running.

        :return: True if the process is running, otherwise False
        """
        try:
            return (self._process is not None and
                    self._process.state() != self._process.NotRunning)
        except RuntimeError:
            return False
Tells whether the backend process is running.

        :return: True if the process is running, otherwise False