def __fetch__(self):
"get the next item from the sequence and queue it up"
item = next(self.sequence)
key = self.func(item)
queue = self.queues.setdefault(key, FetchingQueue(self.__fetch__))
queue.enqueue(item)
def __fetch__(self): "get the next item from the sequence and queue it up" item = next(self.sequence) key = self.func(item) queue = self.queues.setdefault(key, FetchingQueue(self.__fetch__)) queue.enqueue(item)