For seasoned experts and beginners alike, developers must learn a different approach to building APIs with a different backend programming language. With knowledge about using Node/Express, you can transfer the understanding from the runtime environment, Node.js, build your customised API, and remember testing the functionality with Postman. In this talk, we'll go over the basic of Python and the strategies of using the Flask framework for building, testing, and possibly documenting your workflow with Postman.