Re: A symbolic package using SymPy

[Colin Macdonald]

On 18/04/14 17:19, Juan Pablo Carbajal wrote:
> How do you implement the communication with python? It seems via
> stdout, am I right?

Essentially yes.

Two options: system() and popen2().  In both cases I construct the 
python commands as strings and pass them to stdin of python.  In case 
of system(), Octave does it all for me.

In popen2(), I pass commands to the file descriptor (which is python's 
stdin) and then read back from python's stdout.

Its a bit messy, but other more robust implementations could be 
dropped in (linking to libpython in a .oct file would be nice!)  Most 
of the @sym class doesn't care, just needs *some* mechanism.

(The two mechanisms I'm using don't need anything compiled.)

Colin