Lott Steven F. Lott 
Mastering Objectoriented Python [EPUB ebook] 

This book follows a standard tutorial approach with approximately 750 code samples spread through the 19 chapters. This amounts to over 5, 900 lines of code that illustrate each concept. This book is aimed at programmers who have already learned the basics of object-oriented Python and need to write more sophisticated, flexible code that integrates seamlessly with the rest of Python. This book assumes a computer science background, with experience of common Python design patterns.