Major Changes in This Edition
The best way to get a feel for any book is to read it, of course. But especially for people who are familiar with the first edition, the next few sections go into more detail about what is new in this edition.
It’s Been Updated for Python 2.0
This edition has been updated for Python 2.0, and the Graphical User Interface (GUI) material has been updated for Tk versions 8.0 or later. Technically, this update was begun under Python 1.5.2, but all examples were revisited for 2.0 before publication.
For the trivia buffs among you: release 2.0 was the first Python release following Guido’s move to BeOpen, while 1.6 was the last release from Guido’s prior employer, CNRI. Just before I finished this book’s final draft and after the 2.0 release, Guido and the core Python development team moved from BeOpen to Digital Creations, home of the Zope web application construction kit, but this move is independent of Python releases (see Chapter 1, for more details).
Release 2.0 introduces a few language extensions, but 2.0 and 1.6 are similar in content, and the updates just add a handful of features. The examples in this book should generally work with later Python releases. Remarkably, almost all examples in the first edition still work five years later, with the latest Python releases; those that didn’t work required only small fixes (e.g., GUI call formats and C API interfaces).
On the other hand, although the core language hasn’t changed much since the first edition, ...
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