Hi, I apologize not to have answered to your question in a coherent way. I can take as excuses that I don't know English very well or that I was mistaken by the fact that you refer a piece of code with the error traceback (instead of simply asking for how entering command parameters in IDLE). But the "real" reason is what I call the "guru syndrome", that takes the newbies like me when they think they can teach something to experts! Of course I don't know the answer for your question, which can be referred also to the interactive Python and, AFAIK, also to the script itself. The only suggestion is to wrap your code with embedded the wanted parameters, and call it by means of import (but be carefull...I'm not an expert!) Bye.
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