How can I implement async queues in Python?

How can I implement async queues in Python?

You can use the asyncio library along with asyncio.Queue to implement async queues in Python. Would you like a code example?

Yes, please provide a code example.

Here's a simple example:

import asyncio

async def worker(queue):
    while True:
        item = await queue.get()
        if item is None:
            break
        print(f'Processing {item}')
        await asyncio.sleep(1)  # Simulate work

async def main():
    queue = asyncio.Queue()
    # Start worker
    asyncio.create_task(worker(queue))
    # Add items to the queue
    for i in range(5):
        await queue.put(i)
    await queue.put(None)  # Stop signal

asyncio.run(main())

This code creates a worker that processes items from the queue asynchronously.

What does the None in the queue signify?

The None is used as a sentinel value to signal the worker to stop processing. When the worker retrieves None, it breaks the loop and exits.