## Nested Structure of Tree Data

Grouping and Filtering Data from Excel Using GroupBy with Multiple Columns and Boolean Indexing Techniques

Merging Data from Two Excel Files into a Single File Using Pandas in Python

Inserting Special Characters into Result Array Using NumPy and Loops in Python

Python Pandas Parsing with DataFrames: A Comprehensive Guide to Log File Analysis

Mixing NumPy Arrays with Pandas DataFrames: Best Practices for Integration and Visualization

Looping Over CSV Files and Creating a Dictionary from a File List Using Python's Glob Module and Regular Expressions

Sorting Month Columns in pandas Pivot Table: 2 Approaches for Solving the Problem

How to Use Function Attributes as Both Python Objects and Strings in pandas Data Frames

Saving Custom Data Types in Pandas: A Comparison of HDF5 and Feather Formats