John Machin thanks for all of your help, and I take responsibility for the way I worded my sentences in my last reply to this topic. So in an effort to say sorry, I want to make it clear to everybody that it seems as though errors in my code and use of external programs (Excel in particular) are making "range(sh.nrows)" have faulty results. I am trying to pinpoint the spot in my code or use of Excel, before "range(sh.nrows) is executed, that is bugged. John Machin, I am thrilled that the package xlrd exists at all because it simplifies a daunting task for a beginner programer--me. Its uses are not bound to beginners either. So thanks for the package and your help to this point.
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