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

Importing a CSV file into a Pandas DataFrame


Pandas is an open-source, high-performance library that provides easy-to-use data structures and data analysis tools for Python. Pandas was created to aid in the analysis of time series data, and has become a standard in the Python community. Not only does it provide data structures, such as a Series and a DataFrame, that help with all aspects of data science, it also has built-in analysis methods which we'll use later in the book.

Before we can start cleaning and standardizing data using Pandas, we need to get the data into a Pandas DataFrame, the primary data structure of Pandas. You can think of a DataFrame like an Excel document—it has rows and columns. Once data is in a DataFrame, we can use the full power of Pandas to manipulate and query it.

Getting ready

Pandas provides a highly configurable function—read_csv()—that we'll use to import our data. On a modern laptop with 4+ GB of RAM, we can easily and quickly import the entire accidents dataset...