Python请求url文件写入到本地txt文件后全是乱码

1. URL：

   http://www.dce.com.cn/publicweb/businessguidelines/exportFutAndOptSettle.html?year=2021&month=3&day=07&exportFlag=txt

2. URL打开直接是下载文件，要讲这个文件下载后保存在本地
3. 运行代码后，本地txt文件都是乱码如何解决

4. #encoding=utf-8
   
   import urllib.request
   import requests
   import base64
   url = "http://www.dce.com.cn/publicweb/businessguidelines/exportFutAndOptSettle.html?year=2021&month=3&day=07&exportFlag=txt"
   
   f = urllib.request.urlopen(url)
   data = f.read()
   # print(data)
   with open(file="code2.txt",mode= "wb") as code:
       code.write(data)

    

.encode = utf-8