这个图片保存哪去了

Question

import urllib2

req = urllib2.urlopen('http://www.imooc.com/course/list')

buf =req.read()

import re

listurl = re.findall(r'http：.+\.jpg',buf)

i=0

for url in listurl:

   f = open(str(i)+'.jpg','wb')

   req = urllib2.urlopen(url)

   buf = req.read()

   f.write(buf)

   i += 1