What are the different ways to implement a queue in Python?

What are the different ways to implement a queue in Python?

In Python, you can implement a queue using lists, the collections.deque, or the queue.Queue class. Each has its own advantages.

Can you explain the advantages of using collections.deque over lists?

Sure! collections.deque is optimized for fast appends and pops from both ends, making it more efficient for queue operations compared to lists.

What about the queue.Queue class? When should I use it?

The queue.Queue class is thread-safe and is ideal for multi-threaded applications where you need to manage tasks between threads.

Can you provide a simple code example for each implementation?

Absolutely! Here’s a quick overview:

1. List-based Queue:

   queue = []
   queue.append(1)  # Enqueue
   queue.pop(0)     # Dequeue
   

2. Deque-based Queue:

   from collections import deque
   queue = deque()
   queue.append(1)  # Enqueue
   queue.popleft()  # Dequeue
   

3. Queue Class:

   from queue import Queue
   queue = Queue()
   queue.put(1)     # Enqueue
   queue.get()      # Dequeue