human
I wrote the below code

    app = Klein()
    @app.route(url_path)
    def _respond(request):
        return response_content
    factory = Site(app.resource())
    endpoint = serverFromString(reactor, 'tcp:0')
    listening = endpoint.listen(factory)
    def stop_port(port):
        test.addCleanup(port.stopListening)
        return port
    listening.addCallback(stop_port)
    return listening

What's a good function header?

=====
Here's a good function header?
assistant
#Here's a good function header.

def webserver_for_test(test, url_path, response_content):