[issue18241] Add unique option to heapq functions

[Irit Katriel]

Irit Katriel <iritkatriel at gmail.com> added the comment:

I would dedup when extracting items from the queue, because it is trivial to find duplicates then. It can be done with a simple wrapper, without any changes to the queue.

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nosy: +iritkatriel

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue18241>
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