Fluent Python 2nd Edition
Luciano Ramalho
Agile Web Development with Rails 4
Dave Thomas
Architecture Patterns with Python: Enabling Test-Driven Development, ...
Harry Percival
Serious Python: Black-Belt Advice on Deployment, Scalability, ...
Julien Danjou
Programming Ruby: a Pragmatic Programmer's Guide
The Art of R Programming: A Tour of Statistical Software Design
Norman Matloff