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# About the book

The text of Dive Into Python 3 is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License.

The `chardet` library referenced in Case study: porting `chardet` to Python 3 is licensed under the LGPL 2.1 or later. The alphametics solver referenced in Advanced Iterators is based on Raymond Hettinger's solver for Python 2, which he has graciously relicensed under the MIT license so I could port it to Python 3. Advanced Classes and Special Method Names contain snippets of code from the Python standard library which are released under the Python Software Foundation License version 2. All other example code is my original work and is licensed under the MIT license. Full licensing terms are included in each source code file.

The dynamic highlighting effects in the online edition are built on top of jQuery, which is dual-licensed under the MIT and GPL licenses.

The online edition loads as quickly as it does because

1. jQuery is served by Google AJAX Libraries API.
2. Other Javascript and CSS resources are minimized by YUI Compressor.
3. HTTP caching and other server-side options are optimized based on advice from YSlow.
4. The text uses Unicode characters in place of graphics wherever possible.
5. The entire book was lovingly hand-authored in HTML 5 to avoid markup cruft.

Send corrections and feedback to mark@diveintomark.org.

© 2001–9 Mark Pilgrim