Hi PyHacker and welcome to the forums.

As you wrote that you already learned it once it shouldn't be too hard to get in again. I would recommend to work on some projects so that you have a certain goal to achieve for yourself. This should also keep you motivated.

Besides the onlice resources and the good official python documentation I can recommend the book Learning Python which can be found here.
I also liked Python in a nutshell and the Python Cookbook.

You are welcome.

Check also the official documentation which should be enough when you understand the basics of programming in general.

Then there's also the 'far' simpler learning / method book, which don reviewed on eh-net, 'Hello World! Computer Programming for Kids and Other Beginners'

While it doesn't get 'uber-advanced,' it does make both someone's initial learning curve easier, and is a great refresher for main points and usages, in Python.

Again, it's much  more simplistic, and may be TOO easy to follow, but if you're looking to get back in quickly, it might be enough reminder / refresher, to be of help.

This is off topic, but Otter I actually own some O'Rielly eggs.  There are plenty of them out there.  They usually happen in two cases:

1.  O'Rielly rushes to press to be the only one publishing a book on a topic (or to beat another publisher to press).  This is happening less and less as there are more publishers in the market competing for share, but still happens occasionally.  The "regular expression pocket guide" is a prime example of a book they published that is completely unusable in any way, shape or form.  I know regex's and can't use the thing as a reference.

2.  They are publishing the second edition of a book and can't get the first edition's author back (see Advanced Perl Programming)

I learnt Python just through wanting to achieve a particular task and then googleing for things that I did not know or understand.

The way I learnt certainly takes longer however is much more fun than any book.

I would not recommend this book, at least not to a beginner. It had in my opinion some good points but was unfortunately lacking in some areas.