We expect that you know at least some Python. This book does not
attempt to teach Python as a whole; rather, it presents some specific
techniques (or tricks) for dealing with particular tasks. If you are
looking for an introduction to Python, consider some of the books
described in Section P.6 of this Preface. However, you don't need to
know a lot of Python to find this book helpful. Furthermore, somewhat
to the editors' surprise, even if you do know a lot
about Python, you might very well learn a few things梬e did!