I need to use a priority queue in my Python code, and: am looking for any fast implementations for priority queues optimally, I'd like the queue to be generic (i.e. work well for any object with a

Apr 2, 2012 · The priority queue suggestions shown in the heapq docs are meant to show how to add additional capabilities to a priority queue (such as sort stability and the ability to change the priority of …

Just use the second item of the tuple as a secondary priority if a alphanumeric sort on your string data isn't appropriate. A date/time priority would give you a priority queue that falls back to a FIFIO queue …

Dec 19, 2016 · How to use queue.PriorityQueue as maxheap? The default implementation of queue.PriorityQueue is minheap, in the documentation also there is no mention whether this can be …

Sep 12, 2019 · Iam trying to build a priority queue using PriorityQueue in Python, but instead of element to be considered for priority comparison, I want it to use the return value from a function after passing ...

Mar 25, 2020 · Queue.PriorityQueue is a thread-safe class, while the heapq module makes no thread-safety guarantees. From the Queue module documentation: The Queue module implements multi …

Mar 2, 2014 · I am adding data in priority queue in the form of (priority,data) but when I use the function get(), I get back my priority instead of data. Also, if I add in the form of (data,priority), it is sor...

The usual way to make a priority queue in Python is using the heapq module 's functions to manipulate a list. Since the whole value is compared, we can simply put our two priorities along with a value into a …

Aug 14, 2019 · from queue import PriorityQueue p = PriorityQueue() p.put((a.val, a)) p.put((b.val, b)) p.queue # [(3, Node(val=3)), (4, Node(val=4))] If you have duplicate values, then the comparison will …

I'm trying to implement the Uniform-cost search in Python and for that, I need a priority queue, which I'm using queue.py from the standard library. However, the end of the algorithm checks if ther...