import urllib.request import random def load_baidu(): url = "http://www.baidu.com" user_agent_list = [ "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.163 Safari/535.1", "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0) Gecko/20100101 Firefox/6.0", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50", "Opera/9.80 (Windows NT 6.1; U; zh-cn) Presto/2.9.168 Version/11.50" ] #每次请求的浏览器都是不一样的 random_user_agent = random.choice(user_agent_list) request = urllib.request.Request(url) #增加对应的请求头信息(user_agent) request.add_header("User-Agent",random_user_agent) #请求数据 response = urllib.request.urlopen(request) #请求头的信息 print(request.get_header("User-agent")) load_baidu()