Counting Word Frequency in Python Dataframe using Dictionaries and Scikit-learn's CountVectorizer

Reshaping DataFrames with Pandas: A Comprehensive Guide to Merging and Rearranging Data

Aggregating Cells/Columns in Pandas DataFrame

Understanding the Issue with Subtracting Columns from a Pandas DataFrame: A Guide to Handling Non-Numeric Data and Accessing Specific Columns.

Understanding NaN vs nan in Pandas DataFrames: A Guide to Precision and Accuracy

Sorting and Aggregating Data with Pandas in Python: A Comprehensive Guide

Merging Columns from Multiple DataFrames into One DataFrame Using Pandas

Understanding and Overcoming the SettingWithCopyWarning in Pandas

Here's an example code that demonstrates how to use the `groupby` and `agg` functions together:

Using Nested If Statements in R for Date-Based Data Categorization