example.py

import asyncio
import requests
import sys

import twisted.internet.asyncioreactor
from twisted.internet.defer import ensureDeferred
from twisted.internet import task

loop = asyncio.get_event_loop()
twisted.internet.asyncioreactor.install(loop)

async def _main():
    session = requests.AsyncSession()
    html = await session.get('http://httpbin.org/get')
    print(html)


def main(reactor):
    return ensureDeferred(_main())

task.react(main)