'get an item
ä»useful_proxy_queueéæºè·åäžäžªå¯çšä»£ç, äœ¿çšåéèŠè°çšchangeTable("useful_proxy_queue")
:return:'

def get(self):

    values = self.__conn.hgetall(name=self.name)
    return (random.choice(values.keys()) if values else None)
