from os.path import basename
from urlparse import urlsplit
import urllib,urllib2
def url2name(url):
return basename(urlsplit(url)[2])
def download(url, localFileName = None):
localName = url2name(url)
req = urllib2.Request(url, headers={'User-Agent' : "Magic Browser"})
r = urllib2.urlopen(req)
if r.info().has_key('Content-Disposition'):
# If the response has Content-Disposition, we take file name from it
localName = r.info()['Content-Disposition'].split('filename=')[1]
if localName[0] == '"' or localName[0] == "'":
localName = localName[1:-1]
elif r.url != url:
# if we were redirected, the real file name we take from the final URL
localName = url2name(r.url)
if localFileName:
# we can force to save the file as specified name
localName = localFileName
f = open(localName, 'wb')
f.write(r.read())
f.close()
下载文件,一般可用urllib.urlretrieve(url,path,cbk)实现,但如果下载需要登录后的文件,可利用Cookies和上面的程序段一起下载