aiohttp_web_server_test/demo/views/frontend.py

import aiohttp

from aiohttp_jinja2 import template


@template('index.html')
async def index(request):
    return {}


async def button_clicked(request):
    data = await request.post()
    text = data.get('text')
    response_text = f'Вы ввели: {text}'
    print(response_text)
    return aiohttp.web.Response(text=response_text)