code: def _render_rows(self):
          
          _datas = getattr(self, '_datas', ())
          headers = getattr(self, 'headers', ())
          for index, row in enumerate(_datas):
              row_number = index + 2
              for col_num, value in enumerate(row):
                  cell = self.worksheet.cell(row=row_number, column=col_num + 1)
                  if value is not None:
                      cell.value = value
                  else:
                      cell.value = ""
                  if len(headers) > col_num:
                      header = headers[col_num]
                      format = get_cell_format(header)
                      if format is not None:
                          cell.number_format = format
docs: Render the rows in the current stylesheet