[mod_python] Mod python + apache problem

Hello, I am trying to write some web application using modpython.

I failed at beginning, I cannot configure apache to work with mod-python.

I am using Debian Sarge, apache and libapache-mod-python2.3.

Fragments my configurations are:

<Directory /var/www/modpython>
        AllowOverride All
        AddHandler python-program .py
        PythonHandler mptest.py #i tried also with mptest (withoout .py)
        PythonDebug On
</Directory>


my mptest.py looks like:
jabberpl:/var/www/modpython# cat mptest.py
from mod_python import apache
def handler(req):
        req.send_http_header()
        req.write("Hello World!")
        return apache.OK
jabberpl:/var/www/modpython#  


I started apache again... URL: http://jabberpl.org/modpython/

Apache show mptest.py source, any idea?

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