Looping Through Elements of a Pandas DataFrame to Create a New Nested Dictionary: A Practical Guide for Efficient Data Analysis

Merging Data Frames in Pandas: A Step-by-Step Guide to Avoiding Column Loss

Modifying Column Values in Pandas DataFrames Using Apply and Map

Replacing Dates in a Pandas DataFrame Column Greater Than Reference Date

Grouping Multiple Columns Under a Single Column in Pandas: A Step-by-Step Guide

Sampling a Time Series Dataset at Pre-Defined Time Points: A Step-by-Step Guide

Constructing a DataFrame from Values in Nested Dictionary: A Creative Solution

Counting Unique Values in Python DataFrames Using Pandas

Using Pandas Indexing and Selection to Fetch Specific Data from Excel Files in Python

Here is the code for the solution: