Method extend

recipes/Python/440673_Safe_heap_queue_class/recipe-440673.py:121–126

(self, other)

        self.push(item)

    def extend(self, other):
        if self._key is not None:
            other = it.imap(self._wrap, other)
        push = heapq.heappush; lst = self._lst
        for item in other:
            push(lst,item)

    def sort(self):
        lst = self._lst; pop = heapq.heappop