sched.py 文件源码

def queue(self):
        """An ordered list of upcoming events.

        Events are named tuples with fields for:
            time, priority, action, arguments

        """
        # Use heapq to sort the queue rather than using 'sorted(self._queue)'.
        # With heapq, two events scheduled at the same time will show in
        # the actual order they would be retrieved.
        events = self._queue[:]
        return map(heapq.heappop, [events]*len(events))