Target WSGI script cannot be loaded as Python module

[Thierry]

I'm currently running Apache 2.2 on Windows and I can get the hello
world of modwsgi to run. However, when I configure my Django project,
Apache has the following errors from the error.log file:

mod_wsgi (pid=5956): Target WSGI script 'C:/django_proj/mysite/apache/
mysite.wsgi' cannot be loaded as Python module.
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] mod_wsgi
(pid=5956): Exception occurred processing WSGI script 'C:/django_proj/
mysite/apache/mysite.wsgi'.
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] Traceback (most
recent call last):
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] File "C:/
django_proj/mysite/apache/mysite.wsgi", line 7, in <module>
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] import
django.core.handlers.wsgi
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] File "C:\
\Python26\\lib\\site-packages\\django\\core\\handlers\\wsgi.py", line
8, in <module>
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] from django
import http
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] File "C:\
\Python26\\lib\\site-packages\\django\\http\\__init__.py", line 5, in
<module>
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] from urllib
import urlencode
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] File "C:\
\Python26\\lib\\urllib.py", line 26, in <module>
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] import
socket
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] File "C:\
\Python26\\lib\\socket.py", line 46, in <module>
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] import
_socket
[Tue Apr 14 21:59:21 2009] [error] [client 127.0.0.1] ImportError: DLL
load failed: The specified module could not be found.
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] mod_wsgi
(pid=5956): Target WSGI script 'C:/django_proj/mysite/apache/
mysite.wsgi' cannot be loaded as Python module.
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] mod_wsgi
(pid=5956): Exception occurred processing WSGI script 'C:/django_proj/
mysite/apache/myite.wsgi'.
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] Traceback (most
recent call last):
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] File "C:/
django_proj/mysite/apache/mysite.wsgi", line 7, in <module>
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] import
django.core.handlers.wsgi
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] File "C:\
\Python26\\lib\\site-packages\\django\\core\\handlers\\wsgi.py", line
8, in <module>
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] from django
import http
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] File "C:\
\Python26\\lib\\site-packages\\django\\http\\__init__.py", line 5, in
<module>
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] from urllib
import urlencode
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] File "C:\
\Python26\\lib\\urllib.py", line 26, in <module>
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] import
socket
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] File "C:\
\Python26\\lib\\socket.py", line 46, in <module>
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] import
_socket
[Tue Apr 14 21:59:24 2009] [error] [client 127.0.0.1] ImportError: DLL
load failed: The specified module could not be found.

My 'C:/django_proj/mysite/apache/mysite.wsgi' is the following:
import os, sys
sys.path.append('C:/django_proj')
sys.path.append('C:/django_proj/mysite')

os.environ['DJANGO_SETTINGS_MODULE'] = 'mysite.settings'

import django.core.handlers.wsgi
application = django.core.handlers.wsgi.WSGIHandler()

The apache conf is:
Alias /media/ "C:/django_proj/mysite/media/"

<Directory "C:/django_proj/mysite/media">
Order allow,deny
Options Indexes
Allow from all
IndexOptions FancyIndexing
</Directory>

WSGIScriptAlias /blah "C:/django_proj/mysite/apache/mysite.wsgi"

<Directory "C:/django_proj/mysite/apache">
Order allow,deny
Allow from all
</Directory>

I'm trying to run the above locally by accessing: http://localhost/blah,
I get the 500 Internal Server Error. Can anyone tell me what I'm
missing?

[Graham Dumpleton]

This is not a Django problem, there is something wrong with how Python
is installed on your system.

Replace your Django WSGI script file with:

# Attempt to import 'socket' module.

import socket

# Now for the hello world application.

def application(environ, start_response):
status = '200 OK'
output = 'Hello World!'

response_headers = [('Content-type', 'text/plain'),
('Content-Length', str(len(output)))]
start_response(status, response_headers)

return [output]

and you will likely get a similar result, because the import of
'socket' will fail.

When you install Python, ensure you did so as an account with
Administrator rights and select that you want to make it available to
all users on the system. If you don't do this, the registry entries
which setup where Python searches for modules may not be available to
the user that Apache service runs as. This can result in it not being
able to find some stuff properly.

Please try the WSGI script above instead as first step to show that
this is not a Django problem.

Graham

[Thierry]

Hello world with import socket gave me the same issue. I just re-
installed Python 2.6, more specifically 2.6.2 and everything is
working fine, thanks for your help.

On Apr 14, 10:25 pm, Graham Dumpleton <Graham.Dumple...@gmail.com>
wrote: