Python Queue Library vs Deque: Which One to Use?

What are the main differences between Python's Queue library and Deque?

The Queue library is designed for multi-threading and provides thread-safe FIFO semantics, while Deque is a general-purpose double-ended queue that allows appending and popping from both ends.

When should I use Queue instead of Deque?

Use Queue when you need thread safety and want to manage tasks across multiple threads. Deque is better for single-threaded applications where you need fast appends and pops.

Can you give me an example of using both in a program?

Sure! Here's a simple example: For Queue, you can use it to manage tasks in a worker thread, while for Deque, you can use it to maintain a list of recent items where you can add or remove from both ends.

Are there performance differences between them?

Yes, Deque is generally faster for appending and popping operations since it is implemented as a doubly linked list, while Queue has some overhead due to its locking mechanisms.