You can easily test UI if you use Selenium (UI test tools), PhantomJS (Headless browser), and nose (Unit testing library).
This article describes how to add Google Authenticator (one of two step authentication system) to SSH service.
This article notes how to communicate JSON formatted data between jQuery Ajax and Python CGI.
This article describes how to prepare production level app running environment, using uWSGI which works on mediating between Python Web application and Web server like nginx.
This article describes how to implement Python unit testing using nose, library which can easily implement unit testing.
Note about how to configure nginx to work with CGI written in Python.
This article describes how to implement user authentication system to Flask. Base program that this article uses is created in [previously posted article](https://blog-en.k3n.link/flask-jquery-ajax-post).