[Twisted-Python] Execute interactive commands with a custom ssh shell

Hello all, I try to implement a custom ssh server with twisted . I use* sshserver.py to begin (* http://www.devshed.com/c/a/Python/SSH-with-Twisted/ ) I would like to execute interactive scripts which are on my server. The problem is theses scripts are interactives. How can I redirect IO on my shell ? For example, if I want to install a software with apt. I have questions to install dependencies ( yes/no) I start to create a definition for this function like def do_apt. And then when in my custom shell I execute ( apt python)., that executes apt-get install python on the server. But how can I redirect the output in my shell to answer dependencies questions ? Thanks for your help Best Regards The Noob06