How do I use queues with asyncio in Python?

How do I use queues with asyncio in Python?

You can use asyncio.Queue to manage tasks in an asynchronous environment. 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}')
        queue.task_done()

async def main():
    queue = asyncio.Queue()
    # Start worker tasks
    workers = [asyncio.create_task(worker(queue)) for _ in range(3)]
    # Add items to the queue
    for item in range(10):
        await queue.put(item)
    # Stop workers
    for _ in workers:
        await queue.put(None)
    await queue.join()

asyncio.run(main())

What does the None in the queue signify?

The None is a signal to the worker tasks to stop processing. When they receive None, they break out of the loop.