python爬虫中文乱码，用了utf-8解码，仍然是乱码, 如何处理？

import requests
import json
from requests.packages.urllib3.exceptions import InsecureRequestWarning
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
from bs4 import BeautifulSoup
import sys

def getHTMLText(url):
    try:
        headers = {'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.146 Safari/537.36'}
        h=requests.get(url,headers = headers, verify = False)
        h.raise_for_status()
        h.encoding="gbk"
        return h.text
    except:
        return ""

url = 'http://www.shicimingju.com/book/hongloumeng/1.html'
soup = BeautifulSoup(getHTMLText(url),"html.parser")
with open('第一章.txt','w',encoding = 'UTF-8',errors = 'ignore') as f:
    f.write(str(soup))    

运行结果（部分）是

h.encoding="gbk"应该是decoding吧。 这个和下面的open('第一章.txt','w',encoding = 'UTF-8',errors = 'ignore')，不一致吧，
建议参考下，https://blog.csdn.net/FCinPJP/article/details/82872015