non-blocking network calls when using asyncio in python

To avoid blocking your Event Look in Python when using asyncio, do not use `requests` but use `aiohttp`

Here is some example code. `aiohttp` gives us a session that works well on the asyncio Event Loop.

import aiohttp
import asyncio

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

async def main():
    async with aiohttp.ClientSession() as session:
        urls = ['http://python.org', 'http://google.com', 'http://example.com']
        
        # Create a list of tasks
        tasks = [fetch_real_url(session, url) for url in urls]
        
        # Run them all at once
        responses = await asyncio.gather(*tasks)
        
        print(f"Downloaded {len(responses)} pages concurrently.")

if __name__ == "__main__":
    asyncio.run(main())

Other useful things...

• `async` returns a coroutine object that can be scheduled.
• Calling this function returns a `future` — a placeholder for a result that hasn't happened yet. It tracks the state (Pending, Finished, Cancelled).
• The Event Loop is single-threaded. The Event Loop serves as a scheduler of these tasks.