【python2.7】urllib2抓取网页基础

参考官方文档：https://docs.python.org/2/library/urllib2.html

1. urllib2模块只能在python2.7中使用，它在python3中被拆分成urllib.request和urllib.error
2. urllib2模块定义的方法与类主要涉及：

• basic and digest authentication
• redirections
• cookies
  These are provided by objects called handlers and openers.

写法1

import urllib2

response = urllib2.urlopen("http://www.baidu.com")
#print response.read()
file = open("baidu.html", 'w')
file.write(response.read())
file.close()

写法2

import  urllib2
req = urllib2.request("http://www.baidu.com")
fp = urllib2.urlopen(req)
file = open("baidu.html", 'w')
file.write(fp.read())
file.close()