I had not heard of Grok before being asked to review this book. As it turns out, the framework is based on Zope. That rang a bell as Zope forms the core of the famous Plone CMS.
Compared to the popular Django, Grok is currently somewhat lesser known. Even though both Grok and Django are based on the MVC paradigm there are some vital differences between the two. It appears that by design and Zope Grok applications seem more extensible than ones written in Django. Sadly Grok appears to miss admin interface that's provided with Django by default although it would not surprise me if there was some Zope extension that fills this gap.
The description of the book states following:
- Develop efficient and powerful web applications and web sites from start to finish using Grok, which is based on Zope 3
- Integrate your applications or web sites with relational databases easily
- Extend your applications using the power of the Zope Toolkit
- Easy-to-follow and packed with practical, working code with clear explanations
