Elasticsearch报错

在Pycharm上运行Elasticsearch
代码如下：
from elasticsearch import Elasticsearch

es = Elasticsearch()
result = es.indices.create(index='news', ignore=400)
print(result)

结果报错：ValueError: Either 'hosts' or 'cloud_id' must be specified
请问一下这是怎么回事

主机ip和账户没有设置