使用：

from fake_useragent import UserAgent

ua = UserAgent() #ie浏览器的user agent print(ua.ie)

Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US)

#opera浏览器
print(ua.opera)

Opera/9.80 (X11; Linux i686; U; ru) Presto/2.8.131 Version/11.11

#chrome浏览器
print(ua.chrome)

Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.2 (KHTML, like Gecko) Chrome/22.0.1216.0 Safari/537.2

#firefox浏览器
print(ua.firefox)

Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:16.0.1) Gecko/20121011 Firefox/16.0.1

#safri浏览器
print(ua.safari)

Mozilla/5.0 (iPad; CPU OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5355d Safari/8536.25

最实用的

但我认为写爬虫最实用的是可以随意变换headers，一定要有随机性。在这里我写了三个随机生成user agent，三次打印都不一样，随机性很强，十分方便。

from fake_useragent import UserAgent ua = UserAgent() print(ua.random) print(ua.random) print(ua.random)

Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:15.0) Gecko/20100101 Firefox/15.0.1 Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:16.0.1) Gecko/20121011 Firefox/16.0.1 Opera/9.80 (X11; Linux i686; U; ru) Presto/2.8.131 Version/11.11

爬虫中具体使用方法

import requests
from fake_useragent import UserAgent ua = UserAgent() headers = {'User-Agent': ua.random} url = '待爬网页的url' resp = requests.get(url, headers=headers)