What are the performance differences between deque and list in Python?

What are the performance differences between deque and list in Python?

In Python, a list is optimized for fast fixed-length operations, while a deque (double-ended queue) is optimized for fast appends and pops from both ends.

Can you explain when to use deque over list?

Use deque when you need to efficiently add or remove items from both ends, like in queue implementations. Lists are better for random access.

What are the time complexities for common operations in both?

For lists, appending is O(1) on average, while inserting or deleting is O(n). For deques, appending and popping from either end is O(1).

Are there any memory usage differences?

Yes, lists have a smaller memory overhead compared to deques, but deques can handle larger datasets more efficiently due to their structure.