[mod_python] subprocesses

Hello,

I've read about the multitude of problems in running subprocesses under
mod_python using commands such as os.system() or one of the os.popen().
However, I've never been able to find a work around.  I'm particularly
interested in using os.popen3().  Does anyone know if this will work?
Should I just go back to straight cgi?

Thanks,
Eric