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Update priority_queue.py #7

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Update priority_queue.py #7

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4 changes: 2 additions & 2 deletions priority_queue.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,11 +10,11 @@ def push(self, item, priority):
def pop(self):
if len(self.heap) > 1:
self._swap(0, len(self.heap) - 1)
priority, item = self.heap.pop()
_, item = self.heap.pop()
self._sift_down(0)
return item
elif len(self.heap) == 1:
priority, item = self.heap.pop()
_, item = self.heap.pop()
return item
else:
return None
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