Thanks! I think you're right.

A lot of "learn to code" materials take the approach of just being "a Python book" (for example) with the result being that people don't get any CS background.

* Where is there an introductory book on CS, separated from some language? * What beginner wants to learn abstract CS, separated from some language?

I think I like the book because it combines the CS with the Python - it isn't just a summary of syntax with exercises.