ZADD Redis错误

Question

我正在使用Redis实现目标搜索 下面是索引广告的功能

def index_ad(conn,id,locations,content,type,value):
    pipeline = conn.pipeline(True)

    for location in locations:
        pipeline.sadd('idx:req:'+location,id)

    words = tokenize(content)
    for word in words:
        pipeline.zadd('idx:'+word,id,0)

    rvalue = TO_ECPM[type](1000,AVERAGE_PER_1K.get(type,1),value)
    pipeline.hset('type:',id,type)
    pipeline.zadd('idx:ad:value:',id,rvalue)
    pipeline.zadd('ad:base_value:',id,value)
    pipeline.sadd('terms:'+id,*list(words))
    pipeline.execute()

我收到以下错误：  管道的命令＃3（ZADD idx：look 0 1）导致错误：WRONGTYPE对一个持有错误值的键的操作