python 正则表达式匹配中文utf8

>>> import re
>>> x = u'中国'.encode('utf8')
>>> s = x.__repr__()
>>> s
"'\\xc3\\x96\\xc3\\x90\\xc2\\xb9\\xc3\\xba'"
>>> pattern = '.*%s.*' % s[1:-1]
>>> pattern
'.*\\xc3\\x96\\xc3\\x90\\xc2\\xb9\\xc3\\xba.*'
>>> r = re.match(pattern,u'我是中国人'.encode('utf8'))
>>> r
<_sre.SRE_Match object at 0x012A52C0>
>>> dir(r)
['__copy__', '__deepcopy__', 'end', 'expand', 'group', 'groupdict', 'groups', 'span', 'start']
>>> r.group()
'\xc3\x8e\xc3\x92\xc3\x8a\xc3\x87\xc3\x96\xc3\x90\xc2\xb9\xc3\xba\xc3\x88\xc3\x8b'
>>> 

我很懒，看代码吧