WESLEY J. CHUN, MSCS, is the author of Prentice Hall's bestseller, "Core Python Programming," its video training course, "Python Fundamentals" (LiveLessons DVD), and co-author of "Python Web Development with Django," and has written technical articles for Linux Journal, CNET, and InformIT. In addition to being a software architect and Developer Advocate at Google, he runs CyberWeb, a consulting business specializing in Python software engineering and technical training. He has over 25 years of programming, teaching, and writing experience, including more than a decade of Python. While at Yahoo!, he helped create Yahoo! Mail and Yahoo! People Search using Python. He holds degrees in Computer Science, Mathematics, and Music from the University of California and is based in Silicon Valley.