Start the web server in the foreground. Don't use for production.

def run(config):
    "Start the web server in the foreground. Don't use for production."
    app = make_app(config=config)

    app.run(
            host=app.config.get("HOST", '127.0.0.1'),
            port=app.config.get("PORT", 5000),
            use_reloader=True,
            )