Example sync function in a executor

async_executor.py

import asyncio
from pprint import pprint

import requests


def io_block_socket_call(url):
    resp = url, requests.get(url).status_code == 200
    return resp


async def io_block_in_executor(url, task_id):
    loop = asyncio.get_event_loop()
    print("noblock pre", url, task_id)
    resp = await loop.run_in_executor(None, io_block_socket_call, url)
    print("noblock pos", url, task_id)
    return resp


async def main():
    loop = asyncio.get_running_loop()
    urls = [
        "https://www.google.com",
        "https://www.pylestras.org",
        "https://www.python.org",
        "https://www.globo.com",
        "https://www.uol.com.br",
        "https://stackoverflow.com",
    ]
    tasks = [io_block_in_executor(url, task_id) for task_id, url in enumerate(urls)]
    result = await asyncio.gather(*tasks)
    print("Results:")
    pprint(result)


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