[mod_python] Several handlers

In my httpd.conf, I use
....
....
 SetHandler python-program
  PythonHandler django.core.handlers.modpython
...
...

now I would like to add my own PythonInputFilter.
How can  I add PythonInputFilter into httpd.conf?
I tried to add

 PythonInputFilter django.core.handlers.modpython

but it does not work.
The function inputfilter(filter)  was added into  django.core.handlers.modpython file.
Or must I use  a separate file, different from django.core.handlers.modpython file?

Thank you for help.
La.