code: def _xls2row_heights(self, worksheet, tab):
          
  
          for row in xrange(worksheet.nrows):
              try:
                  height_points = worksheet.rowinfo_map[row].height / 20.0
                  height_inches = height_points / 72.0
                  height_pixels = height_inches * get_dpi()[1]
  
                  self.code_array.row_heights[row, tab] = height_pixels
  
              except KeyError:
                  pass
docs: Updates row_heights in code_array