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Priority Queue
pq = PriorityQueue()
pq.put(('b', 1))
pq.put(('a', 1))
pq.put(('c', 1))
pq.put(('z', 0))
pq.put(('d', 2))
while not pq.empty():
print pq.get(),
# z b a c d
Get the implementation of Priority Queue <a href=http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/87369>here</a>.
