知乎问题：美腿是怎么炼成的-Python爬一趴

#!/usr/bin/env python

import re, requests

SAVE_DIR_PATH = 'E:/zhihu_beautylegs/'
save = lambda url: open(SAVE_DIR_PATH + url[url.rfind('/')+1:], 'wb').write(requests.get(url).content)


def flushBlog():
    print("flush blog stat...")
    session = requests.Session()
    url="http://www.zhihu.com/question/20399991"
    print("url-is:" + url)
    header = {
        'User-Agent': "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36",
        'Accept-Encoding': 'gzip, deflate'
    }
    res = session.get(url, headers=header)
    cntt = res.content
    urls = re.findall(r'https://pic\d.zhimg.com/[a-fA-F0-9]{5,32}_\w+.(?:png|jpg|jpeg)', cntt)
    return urls


if __name__ == '__main__':
    urls = flushBlog()
    for url in urls:
        print "image-usl=" + url
        save(url)