[Gnuplot-py-users] clean exit

When I try to quit from my python programs that called gnuplot.py, they
complain "The program is still running; do you wish to kill it?" 

Even if I click "ok" they still won't go away. 

How do I clean up the gnuplot processes that I've started in python?

Bill Baxter 
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Wadsworth Center
Empire State Plaza, PO Box 509
Albany, NY 12201-0509