py3+urllib+re，爬虫下载捧腹网图片

实现原理及思路请参考我的另外几篇爬虫实践博客

py3+urllib+bs4+反爬，20+行代码教你爬取豆瓣妹子图：http://www.cnblogs.com/UncleYong/p/6892688.html
py3+requests+json+xlwt，爬取拉勾招聘信息：http://www.cnblogs.com/UncleYong/p/6960044.html
py3+urllib+re，轻轻松松爬取双色球最近100期中奖号码：http://www.cnblogs.com/UncleYong/p/6958242.html

实现代码如下：

import urllib.request, re

# 获取网页源码
def page(pg):
	url = 'https://www.pengfu.com/index_%s.html'%pg
	# 页面是utf8编码，所有解码成unicode
	html = urllib.request.urlopen(url).read().decode('utf8') # <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	# print(html)
	return html

# 获取标题
def title(html):
	reg = re.compile(r'<h1 class="dp-b"><a href=".*?" target="_blank">(.*?)</a>') # r表示防止转义
	item = re.findall(reg, html)
	# print(item)
	return item

# 获取图片url
def content(html):
	# html = page(1)
	reg = r'<img src="(.*?)" width='
	item = re.findall(reg, html)
	# print(item)
	return item

def download(url, name):
	path = 'image\%s.jpg'%name#.decode('utf-8').encode('gbk') # win下只识别gbk
	urllib.request.urlretrieve(url, path)

for i in range(5,9):
	html = page(i)
	title_list = title(html)
	content_list = content(html)
	for m, n in zip(title_list, content_list): # 把标题和图片对个对应
		print('正在下载>>>>>：' + m, n)
		download(n, m)