wait_for_code.py

import aiohttp
import asyncio

async def fetch(session, url):
    async with session.get(url) as response:        
        return await response.text()

async def main():
	async with aiohttp.ClientSession() as session:
		results = [wait_for_code(404, session, 'http://python.org') for i in range(2)]
		[print(result) for result in await asyncio.gather(*results)]	

async def wait_for_code(code, session, url, step=1, retries=10):
	async with session.get(url) as response:
		count = retries
		while(count > 0):
			if response.status != code:
				count = count - 1
				print("no match after {0} attempts. {1} attempts left".format(retries - count, count))
				await asyncio.sleep(step)
			else:
				return await response.text()

loop = asyncio.get_event_loop()
loop.run_until_complete(main())