'Send json-serialized version of an object.
See zmq.socket.send_json for details.'

def send_json(self, obj, flags=0, callback=None):

    if (jsonapi is None):
        raise ImportError('jsonlib{1,2},    json    or    simplejson    library    is    required.')
    else:
        msg = jsonapi.dumps(obj)
        return self.send(msg, flags=flags, callback=callback)
