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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def y_select_cb(self, w, index):
 """Callback to set Y-axis column."""

        try:
            self.y_col = self.cols[index]
        except IndexError as e:
            self.logger.error(str(e))
        else:
            self.plot_two_columns(reset_ylimits=True)