Most data scientists are familiar with the basic tools for data cleaning, data manipulation, and machine learning - especially the excellent Pandas, Numpy and Sci-Kit Learn libraries. However, there are so many supplementary libraries that complement these core libraries so well that it would behove most data scientists who are serious about their careers to learn them.
Many Data Scientists know Flask. Flask, by itself, lets you build very simple applications. AJAX and jQuery let you build significantly more involved applications that are more interactive and more complex visually.
I had wanted to build a program that would solve Sudoku puzzles for some time, mostly for philosophical reasons. This turned out to be a perfect project to learn AJAX and jQuery. Here's are two Medium posts explaining in detail how to use AJAX and jQuery to build this Sudoku app:the GitHub repo here, as well as the final web app here.
When I was teaching the Summer 2017 data science immersive program at Metis, I decided to give the lecture on the Selenium library since I hadn’t used it much before. I prepared a short demo of how one could use Selenium - which lets you interact with websites in all the ways you normally would, such as by clicking on things and entering text in forms - to make a reservation on OpenTable.
The students - and Metis students so often do - took this and ran with it, doing amazing projects using Selenium in the week-and-a-half following the lecture.Here is the GitHub repo containing the Selenium OpenTable example and the two projects that the students did. I was very proud of them!