def times():
  User_Agent = 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36'
  headers = {
    'User-Agent': User_Agent
  }
  search_url = 'https://www.cnss.com.cn/u/cms/www/indexJson/bdi_month.json":"(.*"', content) # 获取指数
  date = re.findall('date":"(.*"', content) # 获取时间
  time = []
  i = 0
  start_date = date[0].replace('.', '年')
  start_date.replace('.', '月')
  end_date = date[-1].replace('.', '年')
  end_date.replace('.', '月')
  # print(index,date,start_date,end_date)
  for j in range(int(len(date) / 1)):
    temp = date[i:i + 1]
    i += 1
    time.append(temp)
    hears = start_date + '日' + '——' + end_date + '日' + '嘻嘻嘻'
    title=['交易日期','干散货指数(BDI)','海岬型指数(BCI)','巴拿马型指数(BPI)','超灵便型船运价指数(BSI)','灵便型船指数(BHSI)']
    sheet1.write_merge(0, 0+0,0,0+5, hears, style)
    for ti in range(len(title)):
      sheet1.write(1, ti+0, title[ti], style)
    for x in range(len(time)):
      for y in range(len(time[x])):
        sheet1.write(x + 2, 0, time[x][y], style)
    f.save('你想放的路径.xls')

formatting_info=True这个参数能保留原excel格式

def write_excel_xls_append(path, value,u):
  index = len(value) # 获取需要写入数据的行数
  workbook = xlrd.open_workbook('./result/30波罗的海干散货运价指数.xls',formatting_info=True) # 打开工作簿
  sheets = workbook.sheet_names() # 获取工作簿中的所有表格
  worksheet = workbook.sheet_by_name(sheets[0]) # 获取工作簿中所有表格中的的第一个表格
  rows_old = worksheet.ncols # 获取表格中已存在的数据的行数
  new_workbook = copy(workbook) # 将xlrd对象拷贝转化为xlwt对象
  styleS = xlwt.XFStyle()
  alignment = xlwt.Alignment()
  alignment.horz = xlwt.Alignment.HORZ_CENTER
  alignment.vert = xlwt.Alignment.VERT_CENTER
  styleS.alignment = alignment
  new_worksheet = new_workbook.get_sheet(0) # 获取转化后工作簿中的第一个表格
  for i in range(0, index):
    for j in range(0, len(value[i])):
      new_worksheet.write(i+2, u+1, value[i][j],styleS) # 追加写入数据，注意是从i+rows_old行开始写入
  new_workbook.save(path) # 保存工作簿