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Update: usage doc for heappushpop (GH-91451)
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item = heappop(heap) # pops the smallest item from the heap
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item = heappop(heap) # pops the smallest item from the heap
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item = heap[0] # smallest item on the heap without popping it
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item = heap[0] # smallest item on the heap without popping it
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heapify(x) # transforms list into a heap, in-place, in linear time
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heapify(x) # transforms list into a heap, in-place, in linear time
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item = heappushpop(heap, item) # pushes a new item and then returns
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# the smallest item; the heap size is unchanged
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item = heapreplace(heap, item) # pops and returns smallest item, and adds
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item = heapreplace(heap, item) # pops and returns smallest item, and adds
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# new item; the heap size is unchanged
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# new item; the heap size is unchanged
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