Method task_done

Lib/multiprocessing/queues.py:341–346

(self)

            self._notempty.notify()

    def task_done(self):
        with self._cond:
            if not self._unfinished_tasks.acquire(False):
                raise ValueError('task_done() called too many times')
            if self._unfinished_tasks._semlock._is_zero():
                self._cond.notify_all()

    def join(self):
        with self._cond: