How to wait for a coroutine to finish and continue on its result?

Question

I have a coroutine sending web requests and post process them. Currently I'm doing:

async def scrape(url, sess, logging=None):
    # request
    result = sess.get(url, headers=headers(url))
    # process
    if result.ok:
        await(post_process(result.content))

async def main():
    # code here
    for url in urls:
        await asyncio.create_task(scrape(url, sess))

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

The problem is it is running slowly! Seems the requests are blocking the loop. How can I turn requests to coroutines and wait for it to complete?

Note: I did google it. But I haven't find a concise example to do this. Also, I am using requests and some searches show it's causing the trouble.