Asynchronous updating server mock

fetch-answer_flipflop.py

import asyncio
import random

async def fetching(q):
    while True:
        print("i'm fetching...")
        d = random.random()
        print("done fetching, got", d)
        await q.put(d)
        await asyncio.sleep(1)

async def answering(q):
    while True:
        d = await q.get()
        while q.empty():
            print("answering with", d)
            await asyncio.sleep(0.3)
        q.task_done()

async def main():
    q = asyncio.Queue()
    await asyncio.gather(fetching(q), answering(q))

asyncio.run(main())