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Python Data Cleaning Cookbook

Python Data Cleaning Cookbook - Second Edition

By : Michael Walker
4.9 (22)
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Python Data Cleaning Cookbook

Python Data Cleaning Cookbook

4.9 (22)
By: Michael Walker

Overview of this book

Jumping into data analysis without proper data cleaning will certainly lead to incorrect results. The Python Data Cleaning Cookbook - Second Edition will show you tools and techniques for cleaning and handling data with Python for better outcomes. Fully updated to the latest version of Python and all relevant tools, this book will teach you how to manipulate and clean data to get it into a useful form. he current edition focuses on advanced techniques like machine learning and AI-specific approaches and tools for data cleaning along with the conventional ones. The book also delves into tips and techniques to process and clean data for ML, AI, and NLP models. You will learn how to filter and summarize data to gain insights and better understand what makes sense and what does not, along with discovering how to operate on data to address the issues you've identified. Next, you’ll cover recipes for using supervised learning and Naive Bayes analysis to identify unexpected values and classification errors and generate visualizations for exploratory data analysis (EDA) to identify unexpected values. Finally, you’ll build functions and classes that you can reuse without modification when you have new data. By the end of this Data Cleaning book, you'll know how to clean data and diagnose problems within it.
Table of Contents (14 chapters)
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13
Index

Persisting JSON data

There are several reasons why we might want to serialize a JSON file:

  • We may have retrieved the data with an API but need to keep a snapshot of the data.
  • The data in the JSON file is relatively static and informs our data cleaning and analysis over multiple phases of a project.
  • We might decide that the flexibility of a schema-less format such as JSON helps us solve many data cleaning and analysis problems.

It is worth highlighting this last reason to use JSON – that it can solve many data problems. Although tabular data structures clearly have many benefits, particularly for operational data, they are often not the best way to store data for analysis purposes. In preparing data for analysis, a substantial amount of time is spent either merging data from different tables or dealing with data redundancy when working with flat files. Not only are these processes time-consuming but every merge or reshaping leaves the door open...

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Python Data Cleaning Cookbook
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