Data Manipulation with Pandas: A Brief Tutorial

https://www.marsja.se/data-manipulation-pandas-tutorial/ 

How to Read and Write JSON Files using Python and Pandas

https://www.marsja.se/how-to-read-and-write-json-files-using-python-and-pandas/ 

An Investigation of Imputation Methods

https://www.kaggle.com/athi94/investigating-imputation-methods

Sentiment Analysis

https://github.com/declare-lab/awesome-sentiment-analysis