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Django (web framework) Programming and Development

Introduction:
Django is a Python-based free and open-source web system, which takes after the model-view-template (MVT) building design. It is kept up by the Django Computer program Establishment (DSF), an autonomous organization built up as a non-profit. Django's essential objective is to ease the creation of complex, database-driven websites. The system emphasizes reusability and "pluggability" of components, less code, coupling, quick advancement, and the guideline of do not rehash yourself. Python is utilized all through, indeed for settings records and information models. Django too gives an discretionary administrative create, examined, upgrade and erase interface that's produced powerfully through contemplation and designed through admin models. A few well-known destinations that utilize Django incorporate the Open Broadcasting Benefit, Instagram, Mozilla, The Washington Times, Disqus, Bitbucket, and Nextdoor. It was utilized on Pinterest, but afterward the location moved to a system built over Flask. 

HISTORY:
Django was created in the fall of 2003, when the web programmers at the Lawrence Journal-World newspaper, Adrian Holovaty and Simon Willison, began using Python to build applications. It was released publicly under a BSD license in July 2005. The framework was named after guitarist Django Reinhardt. In June 2008, it was announced that a newly formed Django Software Foundation (DSF) would maintain Django in the future.

COMPONENTS:
Despite having its own nomenclature, such as naming the callable objects generating the HTTP responses "views", the core Django framework can be seen as an MVC architecture. It consists of an object-relational mapper (ORM) that mediates between data models (defined as Python classes) and a relational database ("Model"), a system for processing HTTP requests with a web templating system ("View"), and a regular-expression-based URL dispatcher ("Controller"). Also included in the core framework are:
- a lightweight and standalone web server for development and testing
- a form serialization and validation system that can translate between HTML forms and values suitable for storage in the database
- a template system that utilizes the concept of inheritance borrowed from object-oriented programming
- a caching framework that can use any of several cache methods
- support for middleware classes that can intervene at various stages of request processing and carry out custom functions
- an internal dispatcher system that allows components of an application to communicate events to each other via pre-defined signals
- an internationalization system, including translations of Django's own components into a variety of languages
- a serialization system that can produce and read XML and/or JSON representations of Django model instances
- a system for extending the capabilities of the template engine
- an interface to Python's built-in unit test framework

DEVELOPMENT TOOLS with DJANGO SUPPORT:
For developing a Django project, no special tools are necessary, since the source code can be edited with any conventional text editor.

COMMUNITY:

There is a semiannual conference for Django developers and users, named "DjangoCon", that has been held since September 2008.

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