Getting python to work, Internal Server Error

Question

I\'m trying to get Python scripts, called from a web browser, to work. I keep getting the error:

500 Internal Server Error

When I check my err

Answer 1

I tried many approaches to get Python working with Apache properly and finally settled with using Apache + mod_WSGI + web.py . It sounds like a lot, but it is much simpler than using the complicated frameworks like Django out there.

(You're right, don't bother with mod_python)

Note, I am using Apache2 , but mod_wsgi works on 1.3 as well, based on the modwsgi page.

If you are on Redhat, I believe you have yum, so make sure to get the apache wsgi module and other python packages:

$ yum update
$ yum install gcc gcc-c++ python-setuptools python-devel
$ yum install httpd mod_wsgi

And get web.py for your version of python. For example, using easy_install. I have v2.6.

$ easy_install-2.6 web.py

Create a directory for your python scripts : /opt/local/apache2/wsgi-scripts/

In your httpd.conf :

LoadModule wsgi_module modules/mod_wsgi.so 

# note foo.py is the python file to get executed 
# and /opt/local/apache2/wsgi-scripts/ is the dedicated directory for wsgi scripts
WSGIScriptAlias /myapp /opt/local/apache2/wsgi-scripts/foo.py/

AddType text/html .py



    Order allow,deny
    Allow from all

Note that web.py uses a "templates directory". Put that into the wsgi directory , /opt/local/apache2/wsgi-scripts/templates/ .

Create a file /opt/local/apache2/wsgi-scripts/templates/mytemplate.html :

$def with (text)


Hello $text.

Add appropriate permissions.

$ chown -R root:httpd   /opt/local/apache2/wsgi-scripts/
$ chmod -R 770   /opt/local/apache2/wsgi-scripts/

In your python file, foo.py :

import web

urls = ( '/', 'broker',)
render = web.template.render('/opt/local/apache2/wsgi-scripts/templates/')

application = web.application(urls, globals()).wsgifunc()

class broker:
    def GET(self):
        return render.mytemplate("World")

The above will replace the special web.py $text variable in the mytemplate with the word "World" before returning the result .

http://ivory.idyll.org/articles/wsgi-intro/what-is-wsgi.html