Having used Python for many years, it’s the least interesting aspect of the language. Almost all such tricks can be done with compile time meta programming, often even without API changes.

I'd like to read a blog post on this subject, if anyone knows one.

I don’t know about a blog post, but I mean the obvious stuff like codegen, generics/templates or macros to achieve the same things Python does by being dynamic.

Almost no one actually uses eval/exec.

Not only duck types (ie structural type hierarchies) can be statically verified but they can be statically infered as well, as demonstrated for instance by ocaml since 1996.

"Here is a nickel, kid, get yourself a better programming language" :-p