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is an open-source Web framework based on Zope Toolkit
Zope is a free and open-source, object-oriented Web application server written in the Python programming language. Zope stands for "Z Object Publishing Environment", and was the first system using the now common object publishing methodology for the Web...
technology. The project was started in 2006 by a number of Zope developers. Grok has since then seen regular releases. Its core technologies (Martian, grokcore.component) are also used in other Zope-based projects.
The primary motive behind Grok is to make the Zope Toolkit technology more accessible and easier to use for newcomers and, at the same time, speed up application development, in accordance with the agile programming paradigm
Agile software development is a group of software development methodologies based on iterative and incremental development, where requirements and solutions evolve through collaboration between self-organizing, cross-functional teams...
To achieve this, Grok uses convention-over-configuration
Convention over configuration is a software design paradigm which seeks to decrease the number of decisions that developers need to make, gaining simplicity, but not necessarily losing flexibility....
instead of using an explicit XML based configuration language (ZCML) like Zope Toolkit and BlueBream do. Grok uses Python code for component configuration, and has many implicit defaults and conventions. Grok is similar in feel to other Python Web frameworks like TurboGears
TurboGears is a Python web application framework consisting of several WSGI components such as Pylons, SQLAlchemy, Genshi and Repoze.TurboGears is designed around the model-view-controller architecture, much like Struts or Ruby on Rails, designed to make rapid web application development in Python...
, Pylons and Django.