This package is intended to be independently reusable in any Python project and it is maintained by the Zope Toolkit project. This package provides an implementation of “object interfaces” for Python. Interfaces are a mechanism for labeling objects as conforming to a given API or contract. So, this package can be considered as implementation of the Design By Contract methodology support in Python. Interfaces are objects that specify (document) the external behavior of objects that “provide” them. An interface specifies behavior through: Informal documentation in a doc string; Attribute definitions and; Invariants, which are conditions that must hold for [...]

Quixote is a framework for writing Web-based applications using Python. Its goals are flexibility and high-performance, in that order. The two major versions of Quixote, version 1 and version 2, are similar but incompatible with each other. Both are actively maintained and are used by numerous public sites. There is a small demo as part of the Quixote distribution. It provides a basic example of a Quixote application and could also serve as a template for new applications. Quixote is an open-source project and users are encouraged to join the mailing list. The latest stable version of Quixote is version 2.9.1 (2.9.1 sig), released 2016-04-18. The latest [...]

Divmod Nevow is a web application construction kit written in Python. It is designed to allow the programmer to express as much of the view logic as desired in Python, and includes a pure Python XML expression syntax named stan to facilitate this. However it also provides rich support for designer-edited templates, using a very small XML attribute language to provide bi-directional template manipulation capability. Nevow also includes Divmod Athena, a "two way web" or "COMET" implementation, providing a two-way bridge between Python code on the server and JavaScript code on the client. Modular portions of a page, known as "athena fragments" in the server [...]

Grok is a web application framework for Python developers. It is aimed at both beginners and very experienced web developers. Grok has an emphasis on agile development. Grok is easy and powerful, and it offers a lot of building blocks for web application. Grok is informed by a lot of hard-earned wisdom. Grok accomplishes this by using at its core the Zope Toolkit (ZTK), an advanced object-oriented set of libraries intended for reuse by web frameworks. While Grok uses the Zope Toolkit, and benefits a lot from it, and users can get started with Grok without any special knowledge of the ZTK. Some aspects of Grok development require more detailed knowledge of [...]

Pyramid makes it easy to write web applications. Developer can start small with this "hello world" minimal request/response web app. This may take you far, especially while learning. As your application grows, Pyramid offers many features that make writing complex software take less effort.Pyramid works in all supported versions of Python. Full-stack frameworks provide built-in value by telling that what to do. But doing something different, or using something better, leads to the dreaded "fighting the framework". Pyramid starts from a very small base, providing many high-quality choices. Pyramid is uniquely equipped to scale. Its configuration, [...]