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

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!

Greetings,
Fips