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    <p>A very basic WSGI application can look as follows:</p> <pre><code>def application(environ, start_response): start_response('200 OK', [('content-type', 'text/html')]) return ['Hello world!'] </code></pre> <p>Unfortunately, if you put this into helloworld.py on the server and then browse to URL/helloworld.py you will most likely see the code.</p> <p>In general you need to add very specific configuration options to the server (or to a server configuration file) to get it to serve your python 'application' correctly. Given you are using mod_wsgi on Apache 2, a configuration could look as follows:</p> <pre><code>&lt;VirtualHost *&gt; ServerName example.com WSGIScriptAlias /server/location/address /path/to/helloworld.py &lt;/VirtualHost&gt; </code></pre> <p>Where /server/location/address is the endpoint of the URL you have to browse to.</p> <p>This is because python WSGI catches all URLs passed to it, and pushes them to the same entry point (your application method/class). And from the information received in the parameters, the application must decide what page to return. </p> <p>Since this information is so application specific there 'should' be a way to configure it on the server, however I have yet to come across a web-hosting configuration panel that allows the configuration of Python applications. This generally means you have to contact the server administrators and have them configure it for you.</p> <p>However, in general, when you sign up for hosting the company generally has a page where they tell you exactly what is supported on their servers (generally: php, mysql) and how much space and bandwidth you are allowed. Thus if they do not list it on their site, it is highly likely they will not support it.</p> <p>To get around this you can instead buy a VPS (Virtual Private Server) and then configure it however you want.</p>
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    1. COThanks, this is helpful! I have a few follow-up questions if you don't mind? There is a shared cgi-bin on the server, and I noticed there is a test.py file in there that works: http://chil.rice.edu/cgi-bin/test.py My python file gives an error message. I remember reading that any changes to a python file require the web server to restart (when using CGI method), so presumably if I restart the server it should work correctly, right? As far as WSGI goes, I guess it's safe to assume I can't use WSGI without contacting my sysadmin, right?
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    2. COIt depends on how they have configured the python system. The server header returned is: Server - Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.7l DAV/2 PHP/5.2.12. So I assume they are using mod_python, in which case yes you will need to somehow restart Apache to get it to serve a newer version of the file. There are ways to get around this (using automatic code reloading) if they are using mod_wsgi, see http://code.google.com/p/modwsgi/wiki/ReloadingSourceCode.
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