Python has at least two queue classes, queue.Queue and collections.deque, with the former seemingly using the latter internally. Both claim to be thread-safe in the documentation.

May 6, 2014 · In python docs I can see that deque is a special collection highly optimized for poping/adding items from left or right sides. E.g. documentation says: Deques are a generalization of …

Mar 16, 2016 · I want to create an efficient circular buffer in python (with the goal of taking averages of the integer values in the buffer). Is this an efficient way to use a list to collect values? def

Apr 4, 2012 · deque_slice = collections.deque(itertools.islice(my_deque, 10, 20)) Indexing into a deque requires following a linked list from the beginning each time, so the islice() approach, skipping items …

Getting collections.deque -like O (1) inserts with array-like O (1) lookups isn't too hard using a circular array--- store the window in a array, but keep a 'head' index that points to the front of the sequence. …

Jul 31, 2016 · I am having trouble understanding how the deque works in the snippet of code below, while trying to recreate a queue and a stack in Python. Stack Example - Understood stack = ["a", "b", …

May 13, 2021 · from collections import deque queue = deque(["Eric", "John", "Michael"]) How to check the length of this deque? and can we initialize like

Since a deque is a doubly linked list, I should be able to iterate through it in order without any performance cost compared to a list. However, the following will be much slower than iterating thr...

Apr 13, 2011 · How to check if a deque is empty Asked 14 years, 8 months ago Modified 4 years, 2 months ago Viewed 108k times

Dec 10, 2015 · Check out collections.deque. From the docs: Deques support thread-safe, memory efficient appends and pops from either side of the deque with approximately the same O (1) …