python UnicodeDecodeError: 'utf8' codec can't decode byte 0xd6 in position 15: invalid continuation

 Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1997, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1985, in wsgi_app
    response = self.handle_exception(e)
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1540, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1982, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1614, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1517, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1612, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1598, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/root/flask/mojo.py", line 21, in sms
    a.Sms(message,phone)
  File "/root/flask/lib/Mojo/Base/SOCKET/SMSsendx.py", line 36, in Sms
    data +=phone+tab
UnicodeDecodeError: 'utf8' codec can't decode byte 0xd6 in position 15: invalid continuation byte

-->

reload(sys)
sys.setdefaultencoding('utf-8')
class SMSsendx (object):
  def Sms(self,a,b):
     message=a
     phone=b
     #.decode('utf-8').encode('gbk')
     print a
     print len(message)
     print type(message)
     message=message.encode('gbk')
     print message
     print type(message)
     print len(message)
     host='99.3.229.1'
     port=745
     bufsize=1024
     addr=(host,port)
     s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
     s.connect((host,port))
     data=""
     tab=chr(9)
     #my $data=^Xd$tab;
     data=chr(28)+chr(48)+chr(88)+chr(100)+tab
     data +='015802'+tab
     data +=tab
     data +='N'+tab
     data +=message+tab
     print data
     #data +=str(phone)+tab

python 强类型,需要把数值型转换成字符型
data +=str(phone)+tab
data +=str(phone)+tab