Python txZMQ从0.7.0升级到0.7.3=>；异常。UnicodeDecodeError

以下代码适用于txZMQ 0.7.0，但在txZMQ 0.7.3中中断。有什么问题吗？这是txZMQ中的错误吗

以下是测试代码：

#!/usr/bin/env python

from twisted.internet import reactor
from txzmq import ZmqEndpoint, ZmqFactory, ZmqPubConnection

import msgpack


zf = ZmqFactory()
e = ZmqEndpoint('bind', 'tcp://*:5557')

s = ZmqPubConnection(zf, e) 

def publish():
    data = [35, 11, 20, 4, 49, 1, 1, 49]
    msgpack_data = msgpack.packb(data)
    print "publishing %r" % data
    s.publish(msgpack_data)

reactor.callLater(1, publish)
reactor.run()

对于txZMQ 0.7.0：

pivert@pivert-desktop:~/tmp/twisted$ ./example.py 
publishing [35, 11, 20, 4, 49, 1, 1, 49]
Unhandled Error
Traceback (most recent call last):
  File "./example.py", line 28, in <module>
    reactor.run()
  File "/usr/lib/python2.7/dist-packages/twisted/internet/base.py", line 1192, in run
    self.mainLoop()
  File "/usr/lib/python2.7/dist-packages/twisted/internet/base.py", line 1201, in mainLoop
    self.runUntilCurrent()
--- <exception caught here> ---
  File "/usr/lib/python2.7/dist-packages/twisted/internet/base.py", line 824, in runUntilCurrent
    call.func(*call.args, **call.kw)
  File "./example.py", line 24, in publish
    s.publish(msgpack_data)
  File "/usr/local/lib/python2.7/dist-packages/txzmq/pubsub.py", line 26, in publish
    self.send(tag + b'\0' + message)
exceptions.UnicodeDecodeError: 'ascii' codec can't decode byte 0x98 in position 0: ordinal not in range(128)

并重新执行：

pivert@pivert-desktop:~/tmp/twisted$ ./example.py 
publishing [35, 11, 20, 4, 49, 1, 1, 49]

---

这可能就是问题所在

我通过在对publish（）的调用中添加tag=b''来解决这个问题

e、 g:

pivert@pivert-desktop:~/tmp/twisted$ ./example.py 
publishing [35, 11, 20, 4, 49, 1, 1, 49]

s.publish(msgpack_data, tag=b'')