Book Image

Python Business Intelligence Cookbook

Book Image

Python Business Intelligence Cookbook

Overview of this book

The amount of data produced by businesses and devices is going nowhere but up. In this scenario, the major advantage of Python is that it's a general-purpose language and gives you a lot of flexibility in data structures. Python is an excellent tool for more specialized analysis tasks, and is powered with related libraries to process data streams, to visualize datasets, and to carry out scientific calculations. Using Python for business intelligence (BI) can help you solve tricky problems in one go. Rather than spending day after day scouring Internet forums for “how-to” information, here you’ll find more than 60 recipes that take you through the entire process of creating actionable intelligence from your raw data, no matter what shape or form it’s in. Within the first 30 minutes of opening this book, you’ll learn how to use the latest in Python and NoSQL databases to glean insights from data just waiting to be exploited. We’ll begin with a quick-fire introduction to Python for BI and show you what problems Python solves. From there, we move on to working with a predefined data set to extract data as per business requirements, using the Pandas library and MongoDB as our storage engine. Next, we will analyze data and perform transformations for BI with Python. Through this, you will gather insightful data that will help you make informed decisions for your business. The final part of the book will show you the most important task of BI—visualizing data by building stunning dashboards using Matplotlib, PyTables, and iPython Notebook.
Table of Contents (12 chapters)
Python Business Intelligence Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Creating a Pandas DataFrame from a JSON file


Along with CSV, JSON is another commonly found format for datasets, especially when extracting data from web APIs.

How to do it…

  1. To create a Pandas DataFrame from a JSON file, first import the Python libraries that you need:

    import pandas as pd
  2. Next, define a variable for the JSON file and enter the full path to the file:

    customer_json_file = 'customer_data.json'
  3. Next, create a DataFrame from the JSON file using the read_json() method provided by Pandas. Note that the dates in our JSON file are stored in the ISO format, so we're going to tell the read_json() method to convert dates:

    customers_json = pd.read_json(customer_json_file,
       convert_dates=True)
  4. Finally, use the head() command to see the top five rows of data:

    customers_json.head()

How it works…

After importing Pandas and defining a variable for the full path to our JSON file, we use the read_json() method provided by Pandas to create a DataFrame from our JSON file.

read_json() takes a number of...