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31 lines
760 B
Python
31 lines
760 B
Python
#!/usr/bin/env python
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# coding=utf-8
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import urllib
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import urllib2
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class CacheUtils:
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def cbk(a, b, c):
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'''''回调函数
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@a: 已经下载的数据块
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@b: 数据块的大小
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@c: 远程文件的大小
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'''
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per = 100.0 * a * b / c
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if per > 100:
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per = 100
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print '%.2f%%' % per
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def download(self, url, local):
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urllib.urlretrieve(url, local, cbk)
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def cache(self, url):
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fileName = url.split('/')[-1]
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req = urllib2.Request(url)
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#req.add_header('Range', 'bytes=0-7000')
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response = urllib2.urlopen(req)
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buffer = response.read()
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with open("./cache/img.png", "a+") as fp:
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fp.write(buffer)
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