PEP 8 -- Style Guide for Python Code, Guido van Rossum, Barry Warsaw, and Alyssa Coghlan, 2001 - Provides official guidelines for writing clean, readable Python code, including conventions for comments and code documentation.
Clean Code: A Handbook of Agile Software Craftsmanship, Robert C. Martin, 2008 (Prentice Hall) - Discusses principles of writing clean, maintainable code, with significant emphasis on effective commenting practices, explaining when and how to use comments judiciously.
The Python Tutorial, Python Software Foundation, 2024 - Introduces basic Python syntax, including the simple use of comments for explaining code, suitable for beginners.