When comparing Python Challenge vs Think Python, the Slant community recommends Think Python for most people. In the question“What are the best resources to learn Python?” Think Python is ranked 9th while Python Challenge is ranked 17th. The most important reason people chose Think Python is:
The book is available for free in PDF and HTML formats. A hardcover version can be bought from [Amazon](http://www.amazon.com/gp/product/144933072X).
Ranked in these QuestionsQuestion Ranking
Pro Practical approach
The site simply presents a variety of interesting challenges that can be solved with a little bit of programming. (While any language works, the challenges work best with Python.)
Pro Free versions available
The book is available for free in PDF and HTML formats. A hardcover version can be bought from Amazon.
Think Python is a free book designed for those with no background in programming. It starts with basic concepts of programming, and is carefully designed to define all terms when they are first used and to develop each new concept in a logical progression. Larger pieces, like recursion and object-oriented programming are divided into a sequence of smaller steps and introduced over the course of several chapters.
Con Beginners will quickly find themselves overwhelmed
The levels get tricky pretty quickly for beginners. Additional resources will be required to pass all levels.
Con Some missing instructions for absolute beginners
Some exercises sometimes require taking steps that aren't explained. Some functions and commands are used without explaining their purpose.