1、报错：
import urllib2
url = u"http://www.baidu.com/wd=测试"
urllib2.urlopen(url).read()
错误如下：
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/urllib2.py", line 127, in urlopen
r[......]

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