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Python Data Cleaning Cookbook

You're reading from Python Data Cleaning Cookbook Prepare your data for analysis with pandas, NumPy, Matplotlib, scikit-learn, and OpenAI

Product type Paperback

Published in May 2024

Publisher Packt

ISBN-13 9781803239873

Length 486 pages

Edition 2nd Edition

Languages

Python

Tools

Matplotlib

Concepts

Data Analysis

Author (1):

Michael Walker

View More author details

Table of Contents (14) Chapters

Preface

1. Anticipating Data Cleaning Issues When Importing Tabular Data with pandas FREE CHAPTER

2. Anticipating Data Cleaning Issues When Working with HTML, JSON, and Spark Data

3. Taking the Measure of Your Data

4. Identifying Outliers in Subsets of Data

5. Using Visualizations for the Identification of Unexpected Values

6. Cleaning and Exploring Data with Series Operations

7. Identifying and Fixing Missing Values

8. Encoding, Transforming, and Scaling Features

9. Fixing Messy Data When Aggregating

10. Addressing Data Issues When Combining DataFrames

11. Tidying and Reshaping Data

12. Automate Data Cleaning with User-Defined Functions, Classes, and Pipelines

13. Index

Summary

We explored key tidy data topics in this chapter. These topics included handling duplicated data, either by dropping rows where the data are redundant, or aggregating by group. We also restructured data stored in a many-to-many format into a tidy format. Finally, we stepped through several ways of converting data from wide to long format, and back to wide when necessary. Up next is the final chapter of the book, where we will learn to automate data cleaning with user-defined functions, classes and pipelines.

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Authors (1)

Michael Walker

Michael Walker

Michael Walker has worked as a data analyst for over 30 years at a variety of educational institutions. He is currently the CIO at College Unbound in Providence, Rhode Island, in the United States. He has also taught data science, research methods, statistics, and computer programming to undergraduates since 2006.

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