code: def export_to_xlsx(table, filename_or_fobj=None, sheet_name="Sheet1", *args, **kwargs):
      
  
      workbook = Workbook()
      sheet = workbook.active
      sheet.title = sheet_name
      prepared_table = prepare_to_export(table, *args, **kwargs)
  
      # Write header
      field_names = next(prepared_table)
      for col_index, field_name in enumerate(field_names):
          cell = sheet.cell(row=1, column=col_index + 1)
          cell.value = field_name
  
      # Write sheet rows
      _convert_row = _python_to_cell(list(map(table.fields.get, field_names)))
      for row_index, row in enumerate(prepared_table, start=1):
          for col_index, (value, number_format) in enumerate(_convert_row(row)):
              cell = sheet.cell(row=row_index + 1, column=col_index + 1)
              cell.value = value
              if number_format is not None:
                  cell.number_format = number_format
  
      return_result = False
      if filename_or_fobj is None:
          filename_or_fobj = BytesIO()
          return_result = True
  
      source = Source.from_file(filename_or_fobj, mode="wb", plugin_name="xlsx")
      workbook.save(source.fobj)
      source.fobj.flush()
  
      if return_result:
          source.fobj.seek(0)
          result = source.fobj.read()
      else:
          result = source.fobj
  
      if source.should_close:
          source.fobj.close()
  
      return result
docs: Export the rows.Table to XLSX file and return the saved file.