Apache mod_python problem?

[whale]

I use Apache2.0.44 and mod_python3.0.1.
I add ProxyPass and PythonHandler directives in httpd.conf
## httpd.conf
ProxyPass  /test/  http://www.test.com
ProxyPassReverse  /test/   http://www.test.com
<Location />
    AddHandler python-program .htm .html
    PythonHandler mptest
</Location>    

And mptest.py:
from mod_python import apache
def handler(req):
    req.write('Hello!!')
    return apache.OK

ex. My apache server is www.server.com.
When I browsed the local server request(ex.
http://www.server.com/1.html),
I received 'Hello!!' response, the python handler worked well.
But when I browse the proxy request(ex.
http://www.server.com/test/1.html),
the response I received is the original content of
http://www.test.com/1.html, not 'Hello!!'.
The proxy requests didn't seem to be processed by mod_python handler.
How could I pre-process the proxy request before mod_proxy module?
Thanks a lot!!