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 [...]