百度贴吧图片抓取工具（Python）

import os,urllib,urllib2,re
path='E:/img'     #图片保存路径
url=raw_input('Please input URL:')#贴吧地址
pn=1            #贴吧页码
while 1:
address=url+'?'+'pn='+str(pn)#当前页地址
try:
html=urllib2.urlopen(address).read()#读取当前页html
print '!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!page%d!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'%(pn)
except:
print 'TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT'
exit(0)
m=re.findall('http://imgsrc.baidu.com/forum/w%3D580/sign=.*?\.jpg',html)#利用正则表达式分析图片URL
for i in range(0,len(m)):
print m[i]
n=re.search('sign=(.*?)/',m[i])#提取图片URL部分字符串作为文件名
file_name=n.group(1)+'.jpg'
file_name=os.path.join(path,file_name)
try:
print 'loading...'
urllib.urlretrieve(m[i],file_name)#下载图片
print 'this picture down complete.'
except:
print 'error'
pn=pn+1#翻页