Iglberger's "C++ Software Design: Design Principles and Patterns for High-Quality Software" and Viafore's "Robust Python: Write Clean and Maintainable Code" sou

Iglberger's "C++ Software Design: Design Principles and Patterns for High-Quality Software" and Viafore's "Robust Python: Write Clean and Maintainable Code" sound most useful to me personally, but there are several interesting books.