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python從實際網頁得到HTML的兩種方法

import urllib
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def downloadhtml1():
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sock = urllib.urlopen("http://www.baidu.com")
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htmlContent = sock.read()
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sock.close()
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dirInfo = open('D:\\baidu1.html', 'a')
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dirInfo.write(htmlContent)
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dirInfo.close()
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def cbk(a, b, c):
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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 downloadhtml2():
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url = 'http://www.baidu.com'
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local = 'd:\\baidu2.html'
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urllib.urlretrieve(url,local,cbk)
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if __name__ == '__main__':
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downloadhtml1()
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downloadhtml2()