On 03Dec2013 12:18, Helmut Jarausch <[email protected]> wrote:
> I'd like to extracted elements from a heapq in a for loop.
> I feel my solution below is much too complicated.
> How to do it more elegantly?
I can't believe nobody has mentioned PriorityQueue.
A PriorityQueue (from the queue module in python 3 and the Queue
module in python 2) is essentially just a regular Queue using a
heapq for the storage.
Example (untested):
from Queue import PriorityQueue
PQ = PriorityQueue()
for item in [1,2,3,7,6,5,9,4]:
PQ.put(item)
while not PQ.empty():
item = PQ.get()
... do stuff with item ...
I iterate over Queues so often that I have a personal class called
a QueueIterator which is a wrapper for a Queue or PriorityQueue
which is iterable, and an IterablePriorityQueue factory function.
Example:
from cs.queues import IterablePriorityQueue
IPQ = IterablePriorityQueue()
for item in [1,2,3,7,6,5,9,4]:
IPQ.put(item)
for item in IPQ:
... do stuff with item ...
Cheers,
--
Cameron Simpson <[email protected]> http://www.cskk.ezoshosting.com/cs/
Those who do not understand Unix are condemned to reinvent it, poorly.
- Henry Spencer @ U of Toronto Zoology, [email protected]
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