Pyramid

Be it a spreadsheet, corporate intranet or a social networking platform, Pyramid is general enough to cover all the different strategies and it can be used in wide variety of circumstances.

Pyramid allows you to start with a small application and it won't hold you back when your application becomes large. Some frameworks are build for just small or large applications. Well designed framework should be able to be good at both. Pyramid attempts to follow these design and engineering principles (source: https://docs.pylonsproject.org):

• Simplicity: Pyramid takes a "pay only for what you eat" approach. You can get results even if you have only a partial understanding of Pyramid. It doesn’t force you to use any particular technology to produce an application, and we try to keep the core set of concepts that you need to understand to a minimum.
• Speed: Pyramid is designed to provide noticeably fast execution for common tasks such as templating and simple response generation.
• Minimalism: Pyramid tries to solve only the fundamental problems of creating a web application: the mapping of URLs to code, templating, security and serving static assets. We consider these to be the core activities that are common to nearly all web applications.
• Reliability: Pyramid is developed conservatively and tested exhaustively. Where Pyramid source code is concerned, our motto is: "If it ain’t tested, it’s broke".