Copyright Notice — How to Think Like a Computer Scientist: Learning with Python 3 (AoPS Edition)
Copyright (C) 2014, AoPS Incorporated.
Copyright (C) Peter Wentworth, Jeffrey Elkner, Allen B. Downey and Chris Meyers.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3
or any later version published by the Free Software Foundation;
with Invariant Sections being Foreword, Foreword-AoPS Edition, Preface, and Contributor List,
no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is
included in the section entitled “GNU Free Documentation License”.