用python实现wget功能

 把代码记录下来，以免以为忘了。

#wget_cmd.py

#!/usr/bin/python
import sys, urllib

def reporthook(*a):
    print a
for url in sys.argv[1:]:
    i = url.rfind('/')
    file = url[i+1:]
    print url, "->", file
    urllib.urlretrieve(url, file, reporthook)