Python Paste: Difference between revisions

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{{Short description|Python web development utilities}}

{{essay-like|date=February 2010}}

{{Infobox Software

{{Multiple issues|

{{refimprove|date=December 2017}}

{{notability|Products|date=May 2021}}

}}

{{Infobox Softwaresoftware

| name = Paste

| logo = ?

| released developer = {{startIan date|2005|?}}Bicking

| license released = [[MIT{{start License]]date|2005}}

| latest release version = 1.7.2

| latest release date version = ?2.0.3

| latest release date = {{start date and age|2016|03|08}}

| genre = [[Web application framework]]

| license = [[MIT License]]

| programming language = [[Python (programming language)|Python]]

| operating system = [[Cross-platform]]

| developergenre = Ian[[Web Bickingframework]]

| websitelicense = http://www.pythonpaste.org/[[MIT License]]

}}

'''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://redditblog.comianbicking.org/r/programming/info/ehyf/comments/ceifhits-not-another-damn-framework.html|title = It's Not Another Damn Framework}}</ref>.

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

==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.

To understand the function of paste it is first necessary to understand WSGI middleware.

==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. 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, [[urlURL redirection]], creation of [[sessionssession (computer science)|session]]s, and compression.

==Python paste==

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

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

==Uses of Paste==

==UsesSubcomponents of Paste ==

Paste is a component used in the [[Pylons (web framework)|Pylons]] web application framework. Paste has been a long-running open source project, dating from at least 2005. As Itit has grown, andit has unbundled numerousseveral 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 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.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==

* [[TurboGears]]

* [[Pylons project]]

* [[Seaside (software)|Smalltalk Seaside]]

* [[Java Servletservlet]]

* [[Internet Server Application Programming Interface]] (ISAPI)

* [[ISAPI]]

* [[FastCGI]]

* [[Thrift (protocol)|Apache Thrift]] (from Facebook and Evernote teams)

* [[Server-side JavaScript]]

* [[PHP]]

* [[Web application framework]]

==References==

{{Reflist}}

<references/>

==External links==

*{{Official website}}

* [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 Webweb Application Frameworksframeworks}}

{{Web server software}}

[[Category:Python web(programming applicationlanguage) web frameworks]]