Async Bench: code with coroutines

import asyncio
import aiohttp

LINK_FILE = open('links.txt', 'r')
LINKS = LINK_FILE.readlines()
LINKS_COUNT = len(LINKS)


async def download_coroutine(img_url):
    global LINKS_COUNT
    async with aiohttp.ClientSession() as session:
        async with session.get(img_url) as resp:
            while True:
                chunk = await resp.content.read(1024 * 64)
                if not chunk:
                    break
                # writing chunk to file is unnecessary for a benchmark
    LINKS_COUNT -= 1
    print(f'\rImages left: {LINKS_COUNT}   ', end='')


async def main():
    await asyncio.wait([download_coroutine(img_url.strip()) for img_url in LINKS])


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