stevemac,
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The document at provided two implementations of () and one of those might be used as your script closes down for the next trial run.
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If your development is still at the stage of unexpected termination, this idea might not be very useful.
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Suggestions for all beginning Jython programmers: Keep the Console window open and at least partially visible and put in a lot of print or log statements.
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Cliff in Baja SoCal