爬虫

#!/usr/bin/env python
#coding=utf-8
import re
import urllib

def getHtml(url):
    page = urllib.urlopen(url)
    html = page.read()
    return html

def getImg(html):
    reg = r'src="(.+\.png)"'
    imgre = re.compile(reg)
    imglist = re.findall(imgre,html)
    x = 1
    for imgurl in imglist:
        urllib.urlretrieve(imgurl,'%s.png' % x)
        x += 1
html = getHtml("http://172.25.254.100")
print getImg(html)