Another way to run Python programs is through the Jupyter Notebook. The Jupyter Notebook provides a browser-based user interface to develop code. The Jupyter Notebook is used to present the code examples in this book. The ability to annotate and describe the code with texts and graphics makes it the perfect tool for presenting and explaining an algorithm and a great tool for learning.

To start the notebook, you need to start the Juypter-notebook process and then open your favorite browser and navigate to http://localhost:8888:

Note that a Jupyter Notebook consists of different blocks called cells.