openpyxl
openpyxl is a Python library for reading and writing Excel files (specifically .xlsx and .xlsm formats) without requiring Microsoft Excel. It provides a comprehensive set of tools to manipulate spreadsheets, including creating, modifying, and extracting data from cells, rows, columns, and worksheets. The library supports features like formulas, charts, images, and styling, making it a powerful tool for automating Excel-related tasks in Python applications.
Developers should learn openpyxl when they need to automate Excel file processing in Python, such as generating reports, parsing data from spreadsheets, or integrating Excel data into web applications or data pipelines. It is particularly useful in data analysis, business automation, and financial applications where Excel files are commonly used for data exchange and storage, offering a programmatic alternative to manual Excel operations.