Book Image

Jupyter Cookbook

By : Dan Toomey
Book Image

Jupyter Cookbook

By: Dan Toomey

Overview of this book

Jupyter has garnered a strong interest in the data science community of late, as it makes common data processing and analysis tasks much simpler. This book is for data science professionals who want to master various tasks related to Jupyter to create efficient, easy-to-share, scientific applications. The book starts with recipes on installing and running the Jupyter Notebook system on various platforms and configuring the various packages that can be used with it. You will then see how you can implement different programming languages and frameworks, such as Python, R, Julia, JavaScript, Scala, and Spark on your Jupyter Notebook. This book contains intuitive recipes on building interactive widgets to manipulate and visualize data in real time, sharing your code, creating a multi-user environment, and organizing your notebook. You will then get hands-on experience with Jupyter Labs, microservices, and deploying them on the web. By the end of this book, you will have taken your knowledge of Jupyter to the next level to perform all key tasks associated with it.
Table of Contents (17 chapters)
Title Page
Copyright and Credits
Packt Upsell

Why multiuser?

The standard Jupyter install is written expecting only one active user at a time. I know, but it's a website. Websites are built expecting lots of users. I agree.

Hence, several groups have come to the rescue to make your Notebook work with a multitude of concurrent users.

How to do it...

We can show an example of the problem if we enter a small (Python 3) Notebook page that interacts with users, as follows:

from ipywidgets import interact

def myfunction(x):
 return x

interact(myfunction, x="Hello World")

We have a script that takes the string entered and displays it back (defaulting to Hello World) with the initial output as shown here:

And then, as I changed the value entered in the interactive textbox, the display changed accordingly:

At this point, I have interacted with the Notebook from a browser and it printed Hello to me. If I open another browser (or browser window) and direct a user to the Notebook, the new user sees the same display, Hello Dan. That is the problem. The...