I recommend to study the actual language (and partially affected web development) "mark Lutz. Learning Python, 3rd edition" (Icon, 2009) or the original :) Learning Python. Third Edition. Mark Lutz? (O'reilly, 2008, may already have the 4th edition, but not met). Focused on Python 2.5, the most in a game.
On App Engine in 90% of cases have enough docks (at least if pehepe worked with frameworks type Symphony and ORM-type doctrines) — in English better docks (don't have time to translate, apparently), plus holograph
If pehepe wrote in a style close to procedural, highly recommend once (and even before) to examine the books of the "gang of four", Fowler, etc. patterns, DDD, TDD, UML, etc.