免验证码下载itpub附件

stdin输入一行一个附件链接，Ctrl+D后会调用curl开始下载(希望显示下载进度，还得在header里读取文件名，懒得用urllib2搞了)

#!/usr/bin/env python2.7

import re
import sys
import subprocess as subp

ptn = re.compile(r'^{0}([\w\d]+)&fid=61$'.format(re.escape(r'http://www.itpub.net/attachment.php?aid=')))

for line in sys.stdin:
    line = line.strip()
    if line:
        mat = ptn.match(line)
        if mat is not None:
            filelink='http://www.itpub.net/forum.php?mod=attachment&aid={0}==&fid=61'.format(mat.group(1))
            subp.call(['curl', '-JOL', filelink])