如果下载小文件,可以直接使用urllib.urlretrieve方法:
- import urllib
- urllib.urlretrieve ("http://www.example.com/songs/mp3.mp3", "mp3.mp3")
但是如果下载的文件尺寸很大,就不适合直接urlretrieve了。我们需要按块读取文件来下载:
- import urllib2
- url = "http://download.thinkbroadband.com/10MB.zip"
- file_name = url.split('/')[-1]
- u = urllib2.urlopen(url)
- f = open(file_name, 'wb')
- meta = u.info()
- file_size = int(meta.getheaders("Content-Length")[0])
- print "Downloading: %s Bytes: %s" % (file_name, file_size)
- file_size_dl = 0
- block_sz = 8192
- while True:
- buffer = u.read(block_sz)
- if not buffer:
- break
- file_size_dl += len(buffer)
- f.write(buffer)
- status = r"%10d [%3.2f%%]" % (file_size_dl, file_size_dl * 100. / file_size)
- status = status + chr(8)*(len(status)+1)
- print status,
- f.close()
来源: http://www.phpxs.com/code/1005215/