How to make app on your own?

How do you make your web app do simple calculations behind the scene and update variables without user input/interactions and client requests?

• In my Python/Flask based web app, I am trying to calculate interest rates for a savings account. I have no problem performing such actions, but for the life of me, I do not know how to have the web app actually update the variables without any user actions. I want it to be performed in the background, like over time these variables (account balance and interest) gets changed, how should I go about doing such task? The way the web app is organized right now, is based on @app.route functions within the views .py , so each @app.route gets initiated when there is a request sent from the client, but I want the interests to be calculated and updated without any requests. Any help or guidance is appreciated. Thank you.

• Answer:

  Note: I misunderstood the question. See comments for details. Make a function in Python/Flask that returns the current interest rate, and give it a route. @app.route('/api/current_rate/') def interest_rate(): return calc_rate() If you need to parse more information you can return a json dump of the data. On your website you now simply do ajax calls in the background. Have this within your document ready code: function update_rate() { $.ajax({ url: "/api/current_rate/", complete: function(data) { $("#rate_field).html(data); setTimeout(update_rate,5000); // 5000 = 5 seconds } }); } update_rate(); (I assume you are using jquery).