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Python Data Analysis - Third Edition

You're reading from  Python Data Analysis - Third Edition

Product type Book
Published in Feb 2021
Publisher Packt
ISBN-13 9781789955248
Pages 478 pages
Edition 3rd Edition
Languages
Authors (2):
Avinash Navlani Avinash Navlani
Profile icon Avinash Navlani
Ivan Idris Ivan Idris
Profile icon Ivan Idris
View More author details
Toc

Table of Contents (20) Chapters close

Preface 1. Section 1: Foundation for Data Analysis
2. Getting Started with Python Libraries 3. NumPy and pandas 4. Statistics 5. Linear Algebra 6. Section 2: Exploratory Data Analysis and Data Cleaning
7. Data Visualization 8. Retrieving, Processing, and Storing Data 9. Cleaning Messy Data 10. Signal Processing and Time Series 11. Section 3: Deep Dive into Machine Learning
12. Supervised Learning - Regression Analysis 13. Supervised Learning - Classification Techniques 14. Unsupervised Learning - PCA and Clustering 15. Section 4: NLP, Image Analytics, and Parallel Computing
16. Analyzing Textual Data 17. Analyzing Image Data 18. Parallel Computing Using Dask 19. Other Books You May Enjoy

Reading and writing data from JSON

JSON (JavaScript Object Notation) files are a widely used format for interchanging data among web applications and servers. It acts as a data interchanger and is more readable compared to XML. pandas offers the read_json function for reading JSON data and to_json() for writing JSON data:

# Reading JSON file
df=pd.read_json('employee.json')

# display initial 5 records
df.head()

This results in the following output:

In the preceding code example, we have read the JSON file using the read_json() method. Let's see how to write a JSON file:

# Writing DataFrame to JSON file
df.to_json('employee_demo.json',orient="columns")

In the preceding code example, we have written the JSON file using the to_json() method. In the to_json() method, the orient parameter is used to handle the output string format. orient offers record, column, index, and value kind of formats. You can explore it in more detail on the official web page, at...

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