python中中文字符编码问题

data = client.request("commitRealnameAuth",{"sessionId":"ceshi","accountID":"867808"})
#data = client.request("qureyOnlineCashOutDStatusDatas",{})
buffer =  data['response']['ErrorMsg']
print buffer
str = u'\xd3\xc3\xbb\xa7\xbb\xf2\xd5\xdf\xc3\xdc\xc2\xeb\xb2\xbb\xb6\xd4'
#print str.decode("ascii").encode("utf-8")

b = array('u', str)
c = b.tostring()
d = c[::2]
e = d.decode('gbk')#不是gbk的ascii不用decode