Tell me a book on Python

Mark Lutz: learning Python 3rd edition. Now lying on the table next to me. About the electronic version — I don't know, but most likely is.
Well said, truth and more detail than you need someone who is familiar with programming, but overall a very good book.
And — tutorial python is a wonderful thing, in terms of language learning.

on rutrekere there is a distribution with almost all books on Python and Django, you can download to evaluate the style of writing and buy a paper version of the one which you find more understandable.

Strange that nobody mentioned D. Beazley's "Python. A detailed Handbook." Although it is certainly more like a reference book, but the book is quite sensible, I periodically use.

About Python 3, SUMMERFIELD tells, but to say how detailed and complete they can't.
"Mark SUMMERFIELD — Programming in Python 3. Detailed guidance". The book is ~600 pages.

If you are interested in web development, then better, perhaps, after studying the basic syntax of python to start with django, if you now use the web frameworks in php type symfony or zend. In this case, it is not necessary, IMHO, to delve into the intricacies of Python as a language, and it is better to read something by django and either start writing your project, or to join the many already available, studying the actual language and the standard library as needed. The second option is a valuable opportunity to get the proper feedbacks on your code and not continue to write php just changing the syntax, but leaving the same approaches.

Dive into Python