How can I use asyncio.Queue in Python?

How can I use asyncio.Queue in Python?

You can use asyncio.Queue to manage tasks in an asynchronous environment. It allows you to create a queue that can be used to store and retrieve items in a non-blocking way.

Can you show me a simple example of how to implement it?

Sure! Here's a basic example:

import asyncio

async def worker(queue):
    while True:
        item = await queue.get()
        print(f'Processing {item}')
        queue.task_done()

async def main():
    queue = asyncio.Queue()
    for i in range(5):
        await queue.put(i)

    # Start worker tasks
    tasks = [asyncio.create_task(worker(queue)) for _ in range(2)]
    await queue.join()  # Wait until all items are processed

asyncio.run(main())

What happens if I try to get an item from an empty queue?

If you try to get an item from an empty asyncio.Queue, it will wait (block) until an item is available. This is useful for coordinating tasks.

Are there any other methods I should know about?

Yes, besides put() and get(), you can also use task_done() to indicate that a task is complete and join() to wait until all items have been processed.