code: def reset_headers(self):
          
          rows = self.rowCount()
          cols = self.columnCount()
  
          for r in range(rows):
              self.setVerticalHeaderItem(r, QTableWidgetItem(str(r)))
          for c in range(cols):
              self.setHorizontalHeaderItem(c, QTableWidgetItem(str(c)))
              self.setColumnWidth(c, 40)
docs: Update the column and row numbering in the headers.