网页采集中文乱码问题

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https://item.taobao.com/item.htm?spm=a1z38n.10677092.0.0.482434a6EmUbbW&id=564564604865

源码

# -*- coding: utf-8 -*-
"""
Created on Tue Mar 15 08:53:08 2016
采集化工标准补录项目
@author: Administrator
"""
import requests,bs4
text=open("hb.txt",'w',encoding='utf-8')
webpage="http://www.bzwxw.com/html/2016/1988_0116/9.html"
res=requests.get(webpage)
requests.codes.ok

#中文显示全是乱码
res.text

#soup1=bs4.BeautifulSoup(res.text,"lxml",from_encoding="gb18030")
soup1=bs4.BeautifulSoup(res.text,"lxml")

elems=soup1.select('title')
len(elems)
content=elems[0].getText()

#text.write("hello")
text.write(content)

text.close()

bs4显示出来是乱码

查看网页源码

发现charset=gbk,这可能是中文编码

增加一句话res.encoding = 'gbk'

# -*- coding: utf-8 -*-
"""
Created on Tue Mar 15 08:53:08 2016
采集化工标准补录项目
@author: Administrator
"""
import requests,bs4
text=open("hb.txt",'w',encoding='utf-8')
webpage="http://www.bzwxw.com/html/2016/1988_0116/9.html"
res=requests.get(webpage)
res.encoding = 'gbk'
requests.codes.ok

#中文显示全是乱码
res.text

#soup1=bs4.BeautifulSoup(res.text,"lxml",from_encoding="gb18030")
soup1=bs4.BeautifulSoup(res.text,"lxml")

elems=soup1.select('title')
len(elems)
content=elems[0].getText()

#text.write("hello")
text.write(content)

text.close()

发现输出正常

而且写入txt的中文也能正常显示