def get_row_generator(sheet, start_idx):
    """
    获取行的生成器，用于遍历sheet
    Args:
        sheet: openpyxl.worksheet.worksheet.Worksheet
        start_idx: [int]起始索引值，索引值从0开始
    Returns:
        types.GeneratorType
    """
    return sheet.iter_rows(min_row=start_idx + 1, values_only=True)