I cannot use aiohttp session if the previous request timed out

Yes, it is possible. I am rewriting your code and use some of this concept to populate your requests:

• I used itertools.starmap
  
  to pass multiple arguments and create a list of all arguments passed to the function load_page
  
  .

• I used asyncio.gather
  
  to bundle tasks together, and used to change the return_exceptions flag to true to ensure no exceptions were thrown.

• Modified async
  
  to def main
  
  . It returns the collected tasks now.

• I closed the loop at the end.

Code:

import aiohttp
import asyncio
import logging
import itertools

logging.basicConfig(level=logging.DEBUG,
                    format='%(asctime)s %(name)s %(levelname)s %(message)s')

def main(session):
    args = [
        ('https://www.netflix.com:5000', session,),
        ('http://bash.im/', session, 10),
        ('https://myshows.me/', session,),
        ('http://www.lostfilm.tv/', session,),
    ]
    tasks = itertools.starmap(load_page, args)
    futures = map(asyncio.ensure_future, tasks)

    return asyncio.gather(*futures, return_exceptions=True)


async def load_page(url, session, timeout=3):
    try:
        async with session.get(url, timeout=timeout) as response:
            text = await response.text()
            print(len(text))
    except Exception:
        logging.warning(type(e))


if __name__ == '__main__':
    loop = asyncio.get_event_loop()

    conn = aiohttp.TCPConnector(limit=1)
    session = aiohttp.ClientSession(connector=conn, loop=loop)
    loop.run_until_complete(main(session))
    loop.close()

      

        
        
        
      

    

More on: asyncio.gather .

More on: itertools.starmap .

Enjoy!