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<div>'''Python Paste''', often simply called '''paste''', is a set of [[utility software|utilities]] for [[web development]] in [[Python (programming language)|Python]]. Paste has been described as "a framework for [[web framework]]s"<ref>http://reddit.com/r/programming/info/ehyf/comments/ceifh</ref>. Paste may prove to influence [[TurboGears]] in much the same way that [[Rack_(web_server_interface)|Rack]] has influenced Ruby<ref>http://groovie.org/2005/10/04/python-paste-power</ref>.<br />
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== WSGI middleware ==<br />
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To understand the function of paste it is first necessary to understand WSGI middleware.<br />
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The [[Web Server Gateway Interface|WSGI]] standard is an interface that allows applications to use python code to handle HTTP requests. Python code is passed a python representation of an HTTP request by an application, and in return passes back content which will normally eventually be rendered by a web browser. This Python code is called a '''WSGI application'''. A common use for this is when a [[web server]] serves content created by python code.<br />
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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. This is analogous to the function of pipes on Unix systems. Functionality provided by WSGI middleware include authentication, logging, [[url redirection]], creation of [[sessions]], and compression.<br />
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== Python paste ==<br />
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The Python Paste package mainly provides python modules to act as middleware. <br />
In addition to middleware, it provides a simple python webserver that can produce WSGI request and a wrapper used to pass WSGI requests to [[Common Gateway Interface|CGI]] applications. Paste may be understood as a set of libraries making use of the WSGI standard to provide functionality other than the direct creation of content. This is useful when one is deploying applications written in a python [[web_application_framework|web framework]].<br />
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== Uses of Paste ==<br />
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Paste is a component used in the [[Pylons (web framework)|Pylons]] web application framework.<br />
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== See Also ==<br />
* [[TurboGears]]<br />
* [[Pylons]]<br />
* [[Rack_(web_server_interface)|Ruby Rack]]<br />
* [[Seaside_(software)|Smalltalk Seaside]]<br />
* [[Java_Servlet|Java Servlet]]<br />
* [[ISAPI]]<br />
* [[FastCGI]]<br />
* [[Thrift_(protocol)|Apache Thrift]] (from Facebook and Evernote teams)<br />
* [[Server-side_JavaScript|Server-side JavaScript]]<br />
* [[PHP]]<br />
* [[Web_application_framework|Web application framework]]<br />
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== References ==<br />
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== External links ==<br />
* [http://pythonpaste.org Python Paste]: official site<br />
* [http://www.ianbicking.org Ian Bicking] page<br />
* [http://video.google.com/videoplay?docid=-872784530622495809 Ben Bangert's Google Tech Talk], Sep 13, 2006<br />
* [http://pycon.blogspot.com/2009/03/pycon-2009-videos.html Ian Bicking's Topics of Interest, 4:30-9:30], PyCon 2009<br />
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{{Python Web Application Frameworks}}<br />
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[[Category:Python web application frameworks]]</div>98.246.163.74