Book Image

Mastering pandas - Second Edition

By : Ashish Kumar
Book Image

Mastering pandas - Second Edition

By: Ashish Kumar

Overview of this book

pandas is a popular Python library used by data scientists and analysts worldwide to manipulate and analyze their data. This book presents useful data manipulation techniques in pandas to perform complex data analysis in various domains. An update to our highly successful previous edition with new features, examples, updated code, and more, this book is an in-depth guide to get the most out of pandas for data analysis. Designed for both intermediate users as well as seasoned practitioners, you will learn advanced data manipulation techniques, such as multi-indexing, modifying data structures, and sampling your data, which allow for powerful analysis and help you gain accurate insights from it. With the help of this book, you will apply pandas to different domains, such as Bayesian statistics, predictive analytics, and time series analysis using an example-based approach. And not just that; you will also learn how to prepare powerful, interactive business reports in pandas using the Jupyter notebook. By the end of this book, you will learn how to perform efficient data analysis using pandas on complex data, and become an expert data analyst or data scientist in the process.
Table of Contents (21 chapters)
Free Chapter
1
Section 1: Overview of Data Analysis and pandas
4
Section 2: Data Structures and I/O in pandas
7
Section 3: Mastering Different Data Operations in pandas
12
Section 4: Going a Step Beyond with pandas

Summary

After reading this chapter, the following points have been observed:

  • pandas provides powerful methods so that we can read from and write to a variety of data structures and a variety of sources.
  • The read_csv method in pandas can be used for reading CSV files, TXT files, and tables. This method has a multitude of arguments in order to specify delimiters, which rows to skip while reading, reading a file in smaller chunks, and so on.
  • pandas can be used to read data directly from URLs or S3.
  • DataFrames can be converted into JSON and vice versa. JSON can be stored in text files that can be read.
  • JSONs have dictionary-like structures that can be nested an infinite number of times. This nested data can be subsetted just like a dictionary with keys.
  • Pandas provide methods so that we can read data from the HD5, HTML, SAS, SQL, parquet, feather, and Google BigQuery data formats...