[AnkhMorporkian]

You need to use the asyncio (or equivalent) event loop if you want to use the asnycio module. loop.run_until_complete() is synchronous though, so you would simply call that and it will block the control flow despite that function being async. You can definitely mix it with legacy code.

I would recommend against it, but if you had an existing framework, you could just make the endpoints lambdas that are something like:

    app.route("/whatever", lambda: loop.run_until_complete(async_handler_function()))

[orf]

^ this, but be aware that it's only worth it if you do > 1 external call in parallel. I.E this is pointless:

    res = await get('https://somesite.com')
    return Response(res['data'])

As you'd get the same thing if you just did it synchronously (without the await). But if you want to fetch 2 or more pages in parallel when it really pays off.

[AnkhMorporkian]

Yeah, absolutely. I am not a fan of mixing synchronous and asynchronous code, but the design of asyncio makes it very easy to do. I think that most people struggling with the concept don't realize that asyncio is inherently blocking when its being used (well, with the caveat of run_in_executor, but that's best left ignored for the purposes here)