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 25, 2018 · deque remove item by index Asked 7 years, 6 months ago Modified 4 years, 9 months ago Viewed 30k times

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 …

Feb 6, 2018 · Deque too can be interpreted as a list in terms of accessing using indices. You can peek front element by using deque[0] and peek last using deque[-1] This works without …

Mar 16, 2016 · This is not an efficient way to implement circular buffer because pop (0) is O (n) operation in the list. pop (0) removes the first element in the list and all elements have to be …

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

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 …

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 python

How would you extract items 3..6 efficiently, elegantly and pythonically from the following deque without altering it: from collections import deque q = deque('',maxlen=10) for i in range(10,20): ...

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 …