学习的爬虫代码执行出现 ValueError: not enough values to unpack (expected 2, got 1) 求解

import urllib.request
import re

# 请求头信息，字段名:字段值  格式：header = {"user-agent",具体用户代理值}
headers = {"User-Agent": "Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.99 Mobile Safari/537.36"}
opener = urllib.request.build_opener()
url = "http://www.xiaohuabang.cn/duanzi/hunduanzi/12800.htm"
# 把header赋给opener.addheaders
opener.addheaders = [headers]
# 安装为全局
urllib.request.install_opener(opener)

for i in range(12800,12810):
    # 实现自动翻页网址拼接             
    this_url = "http://www.xiaohuabang.cn/duanzi/hunduanzi/"+str(i+1)+".htm"
    # # 'utf-8','ignore'
    data = urllib.request.urlopen(this_url).read().decode("utf-8")
    print(data)

headers应该是一个元组而不是字典，参考 https://blog.csdn.net/qdPython/article/details/108682245
顺便一提，学爬虫不推荐使用urllib，建议使用requests