Transforming a Pandas DataFrame into Multi-Column Format with Multiple Approaches

Selecting Data from a Multi-Indexed DataFrame with Pandas: A Comparison of `query` and `eval` Methods

Determining Multiple Values in a Cell and Counting Occurrences

Combining Pandas Index Columns in a Method Chain Without Breaking Out of the Chain

Exporting Multi-Index Pandas DataFrames to Excel with Ease

Selecting Rows from MultiIndex DataFrames Using Broadcasting and Intersection

Modifying Values in Multi-Index DataFrames: A Safer Alternative for Append Operations

How to Collapse Rows in a Pandas Multi-Index DataFrame

Building a MultiIndex Database with Pandas: A Step-by-Step Guide

Creating a Pandas MultiIndex DataFrame from Multi-Dimensional NumPy Arrays: A Step-by-Step Solution