aiohttp-server-and-session

app.py

from aiohttp import web, ClientSession
from aiohttp.web import middleware


async def search(request):
    q = request.query.get("q", "")
    session = request.app["client_session"]
    async with session.get("https://ya.ru", params={"q": q}) as request:
        body = await request.read()
    return web.Response(body=body, headers={"content-type": "text/html"})


async def client_session(app):
    app["client_session"] = ClientSession()
    yield
    await app["client_session"].close()


def get_app():
    app = web.Application(middlewares=[web.normalize_path_middleware()])
    app.add_routes([
        web.get('/', search)
    ])
    app.cleanup_ctx.append(client_session)
    return app


def main():
    app = get_app()
    web.run_app(app)


if __name__ == "__main__":
    """enter http://127.0.0.1:8080/?q=aiohttp&lr=47 in browser"""
    main()