Python 2.0

url = "http://www.baidu.com" print '第一种方法' response1 = urllib2.urlopen(url) print response1.getcode() print len(response1.read()) print '第二种方法' request = urllib2.Request(url) request.add_header("user-agent","Mozilla/5.0") response2 = urllib2.urlopen(request) print response2.getcode() print len(response2.read()) print '第三种方法' cj = cookielib.CookieJar() opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj)) urllib2.install_opener(opener) response3 = urllib2.urlopen(url) print response3.getcode() print cj print response3.read()

Python 3.0

第一种方法import urllib.requestimport http.cookiejarurl="http://www.baidu.com"print('第一种方法：')response1 = urllib.request.urlopen(url)print(response1.getcode())print(len(response1.read()))print('第二种方法')request = urllib.request.Request(url)request.add_header('user-agent','Mozilla/5.0')response2 =urllib.request.urlopen(request)print(response1.getcode())print(len(response2.read()))print('第三种方法')cj = http.cookiejar.CookieJar()opener= urllib.request.build_opener(urllib.request.HTTPCookieProcessor(cj))urllib.request.install_opener(opener)response3 =urllib.request.urlopen(url)print(response3.getcode())print(cj)print(response3.read())

 

 

 

参考：http://www.imooc.com/article/16363