Book Image

Pandas Cookbook

By : Theodore Petrou
Book Image

Pandas Cookbook

By: Theodore Petrou

Overview of this book

This book will provide you with unique, idiomatic, and fun recipes for both fundamental and advanced data manipulation tasks with pandas 0.20. Some recipes focus on achieving a deeper understanding of basic principles, or comparing and contrasting two similar operations. Other recipes will dive deep into a particular dataset, uncovering new and unexpected insights along the way. The pandas library is massive, and it's common for frequent users to be unaware of many of its more impressive features. The official pandas documentation, while thorough, does not contain many useful examples of how to piece together multiple commands like one would do during an actual analysis. This book guides you, as if you were looking over the shoulder of an expert, through practical situations that you are highly likely to encounter. Many advanced recipes combine several different features across the pandas 0.20 library to generate results.
Table of Contents (12 chapters)

Calculating boolean statistics

When first getting introduced to boolean Series, it can be informative to calculate basic summary statistics on them. Each value of a boolean series evaluates to 0 or 1 so all the Series methods that work with numerical values also work with booleans.

Getting ready

In this recipe, we create a boolean Series by applying a condition to a column of data and then calculate summary statistics from it.

How to do it...

  1. Read in the movie dataset, set the index to the movie title, and inspect the first few rows:
>>> movie = pd.read_csv...