import asyncio
import time

import aiohttp


async def make_request(url, condition):
    async with aiohttp.ClientSession() as session:
        async with condition:
            await condition.wait()
            async with session.get(url) as response:
                data = await response.json()
                print(data)

                await asyncio.sleep(0.5)


async def without_lock(url):
    async with aiohttp.ClientSession() as session:
        async with session.get(url) as response:
            data = await response.json()
            print(data)


async def get_data(url, condition):
    await make_request(url, condition)


async def done(condition):
    print('Will start after 5 seconds')
    await asyncio.sleep(5)
    async with condition:
        condition.notify_all()


async def main():
    condition = asyncio.Condition()

    tasks = [
        asyncio.create_task(
            get_data('http://localhost:8000', condition)
        )
        for _ in range(20)
    ]

    wo_locks = [
        asyncio.create_task(
            without_lock('http://localhost:8000/hello')
        )
        for _ in range(3)
    ]

    asyncio.create_task(done(condition))

    await asyncio.gather(*tasks, *wo_locks)



asyncio.run(main())