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Learning Jupyter 5
Learning Jupyter 5

Learning Jupyter 5: Explore interactive computing using Python, Java, JavaScript, R, Julia, and JupyterLab , Second Edition

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Learning Jupyter 5

Jupyter Python Scripting

Jupyter was originally IPython, an interactive version of Python to be used as a development environment. As such, most of the features of Python are available to you when developing your Notebook.

In this chapter, we will cover the following topics:

  •  Basic Python scripting
  •  Python dataset access (from a library)
  •  Python pandas
  •  Python graphics
  •  Python random numbers

Basic Python in Jupyter

We must open a Python section of our Notebook to use Python coding. So, start your Notebook, and then in the upper-right menu, select Python 3:

This will open a Python window to work in:

As mentioned in the previous chapter, the new window shows an empty cell so that you can enter Python code.

Let's give the new work area a name, Learning Jupyter 5, Chapter 2. Autosave should be on (as you can see next to the title). With an accurate name, we can find this section again easily from the Notebook home page. If you select your browser's Home tab and refresh it, you will see this new window name being displayed:

Note that it has an Notebook icon versus a folder icon. The extension that's automatically assigned is .ipynb (Python Notebook). And, since the item is in a browser in a Jupyter environment, it is marked as running. There is...

Python data access in Jupyter

Now that we have seen how Python works in Jupyter, including the underlying encoding, how does Python access a large dataset of work in Jupyter?

I started another view for pandas, using Python data access as the name. From here, we will read in a large dataset and compute some standard statistics on the data. We are interested in seeing how we use pandas in Jupyter, how well the script performs, and what information is stored in the metadata (especially if it is a larger dataset).

Our script accesses the iris dataset that is built-in to one of the Python packages. All we are looking to do is read in a slightly large number of items and calculate some basic operations on the dataset. We are really interested to see how much of the data is cached in the .pynb file.

The Python code is as follows: 

# import the datasets package 
from sklearn import...

Python pandas in Jupyter

One of the most widely used features of Python is pandas. The pandas are built-in libraries of data analysis packages that can be used freely. In this example, we will develop a Python script that uses pandas to see if there is any affect of using them in Jupyter.

I am using the Titanic dataset from https://www.kaggle.com/c/titanic/data. I am sure that the same data is available from a variety of sources.

Note that you have to sign up for Kaggle in order to download the data. It's free.

Here is our Python script that we want to run in Jupyter:

from pandas import * 
training_set = read_csv('train.csv') 
training_set.head() 
male = training_set[training_set.Sex == 'male'] 
female = training_set[training_set.Sex =='female'] 
womens_survival_rate = float(sum(female.Survived))/len(female) 
mens_survival_rate = float(sum(male...

Python graphics in Jupyter

How do Python graphics work in Jupyter?

I started another view for this named Python graphics so as to distinguish the work.

If we were to build a sample dataset of baby names and the number of births in a year of that name, we could then plot the data.

The Python coding is simple:

import pandas 
import matplotlib 
 
%matplotlib inline 
 
# define our two columns of data 
baby_name = ['Alice','Charles','Diane','Edward'] 
number_births = [96, 155, 66, 272] 
 
# create a dataset from the to sets 
dataset = list(zip(baby_name,number_births)) 
dataset 
 
# create a Python dataframe from the dataset 
df = pandas.DataFrame(data = dataset, columns=['Name', 'Number']) 
df 
 
# plot the data 
df['Number'].plot() 

The steps for the script are as follows:

  1. Import the graphics library (and...

Python random numbers in Jupyter

For many analyses, we are interested in calculating repeatable results. However, much of this analysis relies on some random numbers being used. In Python, you can set seed for the random number generator to achieve repeatable results with the random.seed() function.

In this example, we simulate rolling a pair of dice and look at the outcome. We would expect the average total of the two dice to be six, which is the half-way point between the faces.

The script we are using is as follows:

# using pylab statistics and histogram
import pylab
import random

# set random seed so we can reproduce results
random.seed(113)
samples = 1000

# declare our dataset store
dice = []

# generate and save the samples
for i in range(samples):
total = random.randint(1,6) + random.randint(1,6)
dice.append(total)

# compute some statistics on the dice throws
print("Throw...

Summary

In this chapter, we walked through a simple Notebook and the underlying structure. Then, we saw an example of using pandas and looked at a graphics example. Finally, we looked at an example using random numbers in a Python script.

In the next chapter, we will learn about R scripting in a Jupyter Notebook.

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Key benefits

  • Learn how to use Jupyter 5.x features such as cell tagging and attractive table styles
  • Leverage big data tools and datasets with different Python packages
  • Explore multiple-user Jupyter Notebook servers

Description

The Jupyter Notebook allows you to create and share documents that contain live code, equations, visualizations, and explanatory text. The Jupyter Notebook system is extensively used in domains such as data cleaning and transformation, numerical simulation, statistical modeling, and machine learning. Learning Jupyter 5 will help you get to grips with interactive computing using real-world examples. The book starts with a detailed overview of the Jupyter Notebook system and its installation in different environments. Next, you will learn to integrate the Jupyter system with different programming languages such as R, Python, Java, JavaScript, and Julia, and explore various versions and packages that are compatible with the Notebook system. Moving ahead, you will master interactive widgets and namespaces and work with Jupyter in a multi-user mode. By the end of this book, you will have used Jupyter with a big dataset and be able to apply all the functionalities you’ve explored throughout the book. You will also have learned all about the Jupyter Notebook and be able to start performing data transformation, numerical simulation, and data visualization.

Who is this book for?

Learning Jupyter 5 is for developers, data scientists, machine learning users, and anyone working on data analysis or data science projects across different teams. Data science professionals will also find this book useful for performing technical and scientific computing collaboratively.

What you will learn

  • Install and run the Jupyter Notebook system on your machine
  • Implement programming languages such as R, Python, Julia, and JavaScript with the Jupyter Notebook
  • Use interactive widgets to manipulate and visualize data in real time
  • Start sharing your Notebook with colleagues
  • Invite your colleagues to work with you on the same Notebook
  • Organize your Notebook using Jupyter namespaces
  • Access big data in Jupyter for dealing with large datasets using Spark
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Aug 30, 2018
Length: 282 pages
Edition : 2nd
Language : English
ISBN-13 : 9781789137408
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Length: 282 pages
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Language : English
ISBN-13 : 9781789137408
Category :
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Tools :

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Table of Contents

13 Chapters
Introduction to Jupyter Chevron down icon Chevron up icon
Jupyter Python Scripting Chevron down icon Chevron up icon
Jupyter R Scripting Chevron down icon Chevron up icon
Jupyter Julia Scripting Chevron down icon Chevron up icon
Jupyter Java Coding Chevron down icon Chevron up icon
Jupyter JavaScript Coding Chevron down icon Chevron up icon
Jupyter Scala Chevron down icon Chevron up icon
Jupyter and Big Data Chevron down icon Chevron up icon
Interactive Widgets Chevron down icon Chevron up icon
Sharing and Converting Jupyter Notebooks Chevron down icon Chevron up icon
Multiuser Jupyter Notebooks Chevron down icon Chevron up icon
What's Next? Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon

Customer reviews

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Full star icon Full star icon Half star icon Empty star icon Empty star icon 2.5
(2 Ratings)
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Empty Mailbox Apr 14, 2019
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
The first two chapters explain Jupyter, and introduces Python. The bulk of the book walks the reader through setup, and practical application for various programing languages: R, Julia, Scala, and more. If you are interested in utilizing these languages with Jupyter, or contrasting these languages and your current method of working then this book is for you. Towards the end of the book the author outlines several useful Jupyter topics like interactive user interface widgets. Practical advice on sharing notebooks with others through solutions like JupyterHub, and Docker are explained; as well as there limitations. There's also a good section on exporting your results for communication with others. I look forward to a future book on the new JupyterLabs.
Amazon Verified review Amazon
Brendan O'Sullivan Feb 11, 2021
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
Of the 7 kernels the author offers to install in the separate chapters for Jupyter Lab: Python, R, Java, Javascript, Julia, Spark, Scala, only 2, Python and R, were able to work per the instructions in this book. Very disappointing!!!!The author too often comments and explains: "This example does not work in Windows," or "Major caveat is this does not work on a Windows environment. A Java Notebook will not start on Windows," and "This example does not work in Windows. The Windows install required Microsoft Visual C++ to be installed. I tried several iterations to no avail."With such omissions and admissions, why was this book sent to press???
Amazon Verified review Amazon
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