Python GUI Programming with Tkinter

Fixing the open_record() method

Next, we need to fix our open_record() method. It takes a rownum currently, but we no longer have row numbers; we have date, time, lab, and plot.

To reflect this, replace all instances of rownum with rowkey:

    def open_record(self, rowkey=None):
        if rowkey is None:
        # ...etc

Finally, expand rowkey in the get_record() call, since it expects four positional arguments:

        record = self.data_model.get_record(*rowkey)