Python programming book

Can you recommend a Python programming book for a serious, professional 24-30 hour course for programmers?

I'd like to focus on advanced programming techniques and introduce them to functional programming, rather than teach them what's a while loop (that's assumed to be known) or just teach them syntax, functions and classes (I don't want a "translate Java into Python" course).

>>20
No >>16 is right, Python brings absolutely nothing new to the table. It's just an ugly mess of features that Guido decided he'd like to have and don't work very well together.

Python's syntax is far more elegant than Ruby.
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