Summary  
Demonstrates how to programmatically open an existing workbook, modify its contents, and save the changes using a library.

General domain of usage  
Spreadsheet data processing and automation

Now that we are halfway into our project, let's practice a full pipeline with **openpyxl**!
Here is our file "hello_world.xlsx":

Here is "hello_world_append.xlsx" after successfully completing the task:

In this project, we will study how to create, modify, and extract data from Excel spreadsheets using Python code.

Excel Automation with Python (project)

Open, Edit and Save

Solución