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Python Paste

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Title: Python Paste  
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Subject: Gunicorn (HTTP server), Pylons project, Rack (web server interface), Mongrel2, Yaws (web server)
Collection: Python Web Application Frameworks
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Python Paste

Paste
Developer(s) Ian Bicking
Initial release 2005 (2005)
Stable release 1.7.5.1 / September 20, 2010 (2010-09-20)
Written in Python
Operating system Cross-platform
Type Web application framework
License MIT License
Website .orgpythonpaste

Python Paste, often simply called paste, is a set of utilities for web development in Python. Paste has been described as "a framework for web frameworks".[1]

Contents

  • Python Paste 1
  • WSGI middleware 2
  • Subcomponents of Paste 3
  • See also 4
  • References 5
  • External links 6

Python Paste

The Python Paste package contains Python modules that help in implementing WSGI middleware.

The package includes a WSGI wrapper for CGI applications. It also includes a simple webserver that can produce WSGI requests.

WSGI middleware

The WSGI standard is an interface that allows applications to use Python code to handle HTTP requests. A WSGI application is passed a Python representation of an HTTP request by an application, and returns content which will normally eventually be rendered by a web browser. A common use for this is when a web server serves content created by Python code.

There are, however, other uses: WSGI middleware is Python code that receives a WSGI request and then performs logic based upon this request, before passing the request on to a WSGI application or more WSGI middleware. WSGI middleware appears to an application as a server, and to the server as an application. This is analogous to the function of pipes on Unix systems. Functionality provided by WSGI middleware may include authentication, logging, URL redirection, creation of sessions, and compression.

Paste helps in developing such WSGI middleware systems. For example, it is used in the Pylons web application framework.

Subcomponents of Paste

Paste has been a long-running open source project, dating from at least 2005. As it has grown, it has unbundled several other utilities from the Paste core. These utilities are part of the Paste project, but form their own packages and have their own version numbers. They include:

  • WebOb is a wrapper around the WSGI environment.
  • Paste Deploy is a system for finding and configuring WSGI applications and servers.
  • Paste Script, WebTest, ScriptType, INITools, Tempita, WaitForIt, WPHP, WSGIFilter, and WSGIProxy are other notable bundles.

See also

References

  1. ^ http://blog.ianbicking.org/its-not-another-damn-framework.html

External links

  • Official website
  • Ian Bicking page
  • Ben Bangert's Google Tech Talk, Sep 13, 2006
  • Ian Bicking's Topics of Interest, 4:30-9:30, PyCon 2009
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