What are Jupyter Notebooks? Jupyter notebooks (previously known as IPython notebooks) are open-source web-based applications that allow users to combine code and rich text elements in a single file. The main feature of Jupyter Notebooks is that you can execute chunks of programming code, one chunk at a time. Some people have the ability to write code in one go. But if you’re anything like me, you keep stumbling and fumbling along the way towards something that really works. N