Call OS commands via scripting

Is there a way to call OS commands via the Premiere scripting API?

Basically I would like to run a python script from within premiere, but I see no way to call a os command.

After Effects has the system.callSystem method, which could look something like this:

cmd = "from sb_pipeline import folderStructure; print folderStructure()"

// Call the python script.

var s = system.callSystem('python -c ' + '"' +  cmd + '"');

alert(s);

/Simon