[mod_python] python module loaded, but not parsed (huh?)

Graham Dumpleton grahamd at dscpl.com.au
Sun Jan 8 16:28:42 EST 2006

Fabiano Sidler wrote ..
> Hi folks!
> Just come back from holidays, I wanted to run a script with
> mod_python. According to the logs, mod_python was successfully loaded
> and my python module is getting imported, but the browser only
> receives the script code instead of its output. As usually, my
> .htaccess is fine:
> SetHandler python-program
> PythonHandler mymodule
> PythonDebug On
> There aren't no AllowOverride statements making the above settings
> fail. Can someone help me to fix this weird behaviour?
> Thank you in advance!

If receiving script code, presuming you are using URL ending in

Try the following.

1. Put a file hello.txt in the same directory with something in it and
try and access it using URL ending in 'hello.txt' instead of
'mymodule.py'. If it returns the contents of that file, it probably
isn't using mod_python at all.

2. Introduce a syntax error in your '.htaccess' file. Ie., add a line
containing just 'XXX'. If accessing anything in that directory yields
a 500 error, the '.htaccess' file is at least being consulted. If you
don't get a 500 error, then main Apache configuration has been
changed so as to disallow you to have a '.htaccess' file. The main
Apache configuration does not probably have the required:

  AllowOverride FileInfo

for that directory.

3. Add logging in your handler code to see if it truly is being loaded
and run. Ie.,

  from mod_python import apache

  apache.log_error("loading module")

  def handler(req):
    apache.log_error("running handler")

4. Ensure that your handler is not returning apache.DECLINED, which
would mean that Apache falls back to serving up static file. Ie., your
source code if the URL happened to match that.

5. Read:


for other debugging hints and ideas.


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