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{{essay-like|date=February 2010}}
'''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>{{Cite web|url=http://blog.ianbicking.org/its-not-another-damn-framework.html|title = It's Not Another Damn Framework}}</ref>
'''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>.


== WSGI middleware ==
The Python Paste package contains Python modules that help in implementing [[Web Server Gateway Interface|WSGI]] middleware.


To understand the function of paste it is first necessary to understand WSGI middleware.
The package includes a WSGI wrapper for [[Common Gateway Interface|CGI]] applications. It also includes a simple webserver that can produce WSGI requests.


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.
==WSGI middleware==
The [[Web Server Gateway Interface|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. 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.
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 [[Pipeline (Unix)|pipes on Unix systems]]. Functionality provided by WSGI middleware may include authentication, logging, [[URL redirection]], creation of [[session (computer science)|session]]s, and compression.


== Python paste ==
Paste helps in developing such WSGI middleware systems. For example, it is used in the [[Pylons (web framework)|Pylons]] web application framework.


The Python Paste package mainly provides python modules to act as middleware.  
==Subcomponents of Paste ==
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]].
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:
* Paste Deploy is a system for finding and configuring WSGI applications and servers.
* Paste Script, ScriptType, INITools, Tempita, WaitForIt, WPHP, WSGIFilter, and WSGIProxy are other notable bundles.
* WebTest
* WebOb is a wrapper around the WSGI environment.
WebTest and WebOb have migrated and are now part of the [[Pylons project]].


== Uses of Paste ==
==See also==
 
Paste is a component used in the [[Pylons (web framework)|Pylons]] web application framework.
 
== See Also ==
* [[TurboGears]]
* [[TurboGears]]
* [[Pylons]]
* [[Pylons project]]
* [[Seaside_(software)|Smalltalk Seaside]]
* [[Seaside (software)|Smalltalk Seaside]]
* [[Java Servlet]]
* [[Java servlet]]
* [[ISAPI]]
* [[Internet Server Application Programming Interface]] (ISAPI)
* [[FastCGI]]
* [[FastCGI]]
* [[Thrift_(protocol)|Apache Thrift]] (from Facebook and Evernote teams)
* [[Apache Thrift]] (from Facebook and Evernote teams)
* [[Server-side JavaScript]]
* [[Server-side JavaScript]]
* [[PHP]]
* [[PHP]]
* [[Web application framework]]
* [[Web framework]]
 
== References ==
<references/>
 
== External links ==
* [http://pythonpaste.org Python Paste]: official site
* [http://www.ianbicking.org Ian Bicking] page
* [http://video.google.com/videoplay?docid=-872784530622495809 Ben Bangert's Google Tech Talk], Sep 13, 2006
* [http://pycon.blogspot.com/2009/03/pycon-2009-videos.html Ian Bicking's Topics of Interest, 4:30-9:30], PyCon 2009


{{Python Web Application Frameworks}}
==References==
{{Reflist}}


[[Category:Python web application frameworks]]
[[Category:Python (programming language) web frameworks]]

Latest revision as of 09:17, 4 October 2026

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]

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:

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

WebTest and WebOb have migrated and are now part of the Pylons project.

See also

References

  1. ↑ "It's Not Another Damn Framework". http://blog.ianbicking.org/its-not-another-damn-framework.html. 
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