Question

以下查询在elasticsearch中提供了我的文档的词汇量大小：

GET my_index/my_type/_search
{
  "size": 0, 
  "aggs": {
     "vocab": {
        "cardinality": {
           "field": "text"}}}}

输出结果为：

{
"took": 0,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"failed": 0
},
"hits": {
"total": 84678,
"max_score": 0,
"hits": []
},
"aggregations": {
"vocab": {
"value": 178050**
  }
 }
}

现在我想在python中打印字段＆＃34; value＆＃34;（= 178050）的值。

我在python中写了以下内容：

query_body={
  "size": 0, 
  "aggs": {
     "vocab": {
        "cardinality": {
           "field": "text"}}}}

res = es.search(index = INDEX_NAME, body=query_body)

如何打印该值？感谢。

Answer 1

这是你期待的？在python中，我们可以通过键来获取dict的值。

来自你的输出：

output = {
"took": 0,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"failed": 0
},
"hits": {
"total": 84678,
"max_score": 0,
"hits": []
},
"aggregations": {
"vocab": {
"value": 178050**
  }
 }
}

print (output["aggregations"]["vocab"]["value"]) # It will print the value or use output.get("aggregations").get("vocab").get("value")
178050

Answer 2

鉴于您的结果字典如下所示：

{
    "took": 0,
    "timed_out": false,
    "_shards": {
        "total": 1,
        "successful": 1,
        "failed": 0
    },
    "hits": {
        "total": 84678,
        "max_score": 0,
        "hits": []
    },
    "aggregations": {
        "vocab": {
            "value": 178050
        }
    }
}

您可以访问@mohammedyasin推荐的结果：

res['aggregations']['vocab']['value']

如果res是str，您可以使用json.loads将其转换为字典

import json
res = json.loads(s)
value = res['aggregations']['vocab']['value']

如何在python中打印elasticsearch的查询结果？

2 个答案: