* Add OpenStax Data Science and Python Books to Learning Resources
Added the OpenStax textbook "Principles of Data Science" to the learning resources section:
* [Principles of Data Science](https://openstax.org/details/books/principles-data-science) - OpenStax (PDF) (CC BY-NC-SA 4.0)
This book is a free, open educational resource covering key topics in data science, including Python examples, data ethics, AI, and real-world applications. It is published under a Creative Commons license and provides high-quality material for students and developers.
This contribution adds value to the project by providing learners with a legally shareable, comprehensive data science textbook.
* Fix broken Biopython Tutorial link
Updated the Biopython Tutorial and Cookbook link to a working URL:
* [Biopython Tutorial and Cookbook](https://biopython.org/wiki/Documentation) (HTML)
The previous PDF link was broken, so this update ensures users can access the tutorial successfully. This keeps the learning resources section functional and helpful for all developers.
* Broken PDF link in Biopython Tutorial and Cookbook
* fix Biopython Tutorial and Cookbook PDF build issue for Hacktoberfest 2025
docs: fix Biopython Tutorial and Cookbook PDF build issue for Hacktoberfest 2025
Resolved an issue affecting the generation of the Biopython Tutorial and Cookbook PDF version.
This update ensures the documentation builds successfully alongside the HTML output,
providing a complete and accurate reference for users. Verified after recent changes to the
documentation pipeline.
* Remove .idea folder
* Update free-programming-books-en.md by adding "_English_"
I resolve back the error to _English_
* Move "Principles of Data Science" to Data Science Subjects List
* Added Principles of Data Science into Data Science Topics
* Revert English by Programming & Subject
I had remove the double "___"
