Python: What is asyncio.Queue and when to use it?

1import asyncio
2
3async def producer(queue, n):
4    for i in range(n):
5        await asyncio.sleep(0.5)
6        item = f"item-{i}"
7        await queue.put(item)
8        print(f"Produced: {item}")
9    await queue.put(None)  # Signal completion
10
11async def consumer(queue):
12    while True:
13        item = await queue.get()
14        if item is None:
15            break
16        await asyncio.sleep(0.3)  # Process
17        print(f"Consumed: {item}")
18        queue.task_done()
19
20async def main():
21    queue = asyncio.Queue(maxsize=5)
22    await asyncio.gather(
23        producer(queue, 10),
24        consumer(queue)
25    )
26
27asyncio.run(main())