The provided response is not a solution to a specific problem but rather an extensive explanation of the Python `re` module, its features, and best practices for using it.

Conditional Row Deletion in Pandas DataFrames: A Comprehensive Guide.

Passing and Returning Values within Functions in R: A Comprehensive Guide to Efficient Code Creation

Understanding Pandas Stack Function for Efficient DataFrame Reorganization

Unlisting a DataFrame from a List of Lists in R: A Step-by-Step Guide

How to Count Zero-Value Occurrences in Groupby Operations Using Pandas

Extending Pandas DataFrames: Adding Custom Metadata

How to Use Pandas Groupby Operations for Data Manipulation and Analysis in Python

Merging Two Varying Sized DataFrames on 2 Columns in Python Using Left Join

Handling KeyError When Assigning New Columns to a DataFrame in Pandas