import requests
import chardet

headers = {
    'User-Agent':'Mozilla/5.0 (Windows NT 6.1; Win64; x64) 
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 
Safari/537.36',
}
response = requests.get('http://www.baidu.com/',headers =headers )
 # print response.content

判断网页的编码类型

print chardet.detect(response.content)['encoding']

# print chardet.detect(response.content)

结果：

    >>   utf-8