(self)
This property must be overridden by subclasses of `AsyncRunner`.  It
        must return ``True`` if the executor is running, ``False`` if not.
This property must be overridden by subclasses of `AsyncRunner`.  It
        must return ``True`` if the executor is running, ``False`` if not.
This property must be overridden by subclasses of AsyncRunner . It must return True if the executor is running False if not .
def running(self):
        """
        This property must be overridden by subclasses of `AsyncRunner`.  It
        must return ``True`` if the executor is running, ``False`` if not.
        """
        raise NotImplementedError
def running ( self ) : raise NotImplementedError