What are the performance differences between queue types in Python?

What are the performance differences between queue types in Python?

In Python, the main queue types are list, deque, and Queue. Lists are slower for queue operations, while deque is optimized for fast appends and pops.

Can you explain why deque is faster than a list?

Deque is implemented as a doubly linked list, allowing O(1) time complexity for appends and pops from both ends, unlike lists which are O(n) for pops from the front.

What about the Queue class from the queue module?

The Queue class is thread-safe and provides locking semantics, making it suitable for multi-threaded applications, but it has some overhead compared to deque.

Which one should I use for a simple application?

For a simple application, using deque is often the best choice due to its performance and ease of use.