Running Scripts in Darkradiant
DarkRadiant is offering a Python script interface which provides access to the most important functions. A complete reference of all available classes can be found here.
Where to place the scripts
How to run them
Select them under the "Scripts" menu and choose the one you want to run. Or paste the Python code into the input window in the GroupDialog (Script tab near to the Console and the Media Browser) and hit Run.
It seems you either have Python not installed, or the script module is not compiled in.