(self)
Return a file descriptor (Unix) or handle (Windows) suitable for
        waiting for process termination.
Return a file descriptor (Unix) or handle (Windows) suitable for
        waiting for process termination.
Return a file descriptor ( Unix ) or handle ( Windows ) suitable for waiting for process termination .
def sentinel(self):
        '''
        Return a file descriptor (Unix) or handle (Windows) suitable for
        waiting for process termination.
        '''
        self._check_closed()
        try:
            return self._sentinel
        except AttributeError:
            raise ValueError("process not started") from None
def sentinel ( self ) : self . _check_closed ( ) try : return self . _sentinel except AttributeError : raise ValueError ( "process not started" ) from None