Well, well. One can get interesting results by persistence. The code I
speak of here now works without using ipython.
All it took was moving the offending def (show() at the end) and putting
it somewhere else where the completion of the def bounced right back
into the main flow of the program. T
Certainly in IDLE, when one hits a show() in a def, the program does not
continue to the next statement. It goes somewhere else, because my
program continues normally. Apparently, it goes back up the def calls to
the "main" program, which is a loop that just reads the next file to
perform more
