First introduction to python web framework--Django

Django is an open source web application framework written in Python. The MVC software design pattern is adopted, namely model M, view V and controller C. It was originally developed to manage news content-focused websites owned by Lawrence Publishing Group. And was released under the BSD license in July 2005. This frame is named after the Belgian gypsy jazz guitarist Django Reinhardt.

Django’s main goal is to make developing complex, database-driven websites easy. Django focuses on the reusability and "pluggability" of components, agile development and the DRY rule (Don't Repeat Yourself). Python is commonly used in Django, even including configuration files and data models.

Django officially established the foundation on June 17, 2008.

The core of the Django framework includes: an object-oriented mapper, used as an intermediary between the data model (defined in the form of Python classes) and the relational database; a regular expression-based URL dispatcher; a view system , for handling requests; and a template system.

The core framework also includes:

A lightweight, independent web server for development and testing.

A form serialization and validation system for conversion between HTML forms and data suitable for database storage.

A caching framework with several caching methods to choose from.

Middleware support allows intervention in various stages of request processing.

The built-in distribution system allows components in the application to communicate with each other using predefined signals.

A serialization system capable of generating or reading Django model instances represented in XML or JSON.

A system for extending the capabilities of template engines.

Django includes many applications in its "contrib" package, these include:

An extensible authentication system

Dynamic site management pages

A set of tools for generating RSS and Atom

A flexible Comment system

Tool to generate Google Sitemaps

Tool to prevent cross-site request forgery

A set of template libraries that support lightweight markup languages ​​(Textile and Markdown)

A basic framework to help create geographic information systems (GIS)

Django can run on Apache 2 with mod python enabled, or any WSGI-compatible web server. Django also has the ability to start the FastCGI service, so it can be used on any machine that supports FastCGI.