computer algebra packages

[JCDenton]

> Rahulwrote:
Hi.
> Well is there an open source computer algebra system written in
python
> or at least having a python interface?
> I know of 2 efforts: pythonica and pyginac...are there any others?
> 
> rahul

There is mascyma 
http://home.arcor.de/mulk/projects/mascyma/download.xhtml.en 
that is a pyhton based interface to maxima. I do not know how it
works, since it does not work for me in the moment.  The window
appears on screen but I get no promt in the moment.

Regards, 
JC