Question

我有以下JSON字符串，我想获得doc_count：

import json

text = '''{
  "took": 1,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "failed": 0
  },
  "hits": {
    "total": 11,
    "max_score": 0,
    "hits": []
  },
  "aggregations": {
    "range": {
      "buckets": [
        {
          "key": "2017-02-17T15:00:00.000Z-2017-02-17T16:00:00.000Z",
          "from": 1487343600000,
          "from_as_string": "2017-02-17T15:00:00.000Z",
          "to": 1487347200000,
          "to_as_string": "2017-02-17T16:00:00.000Z",
          "doc_count": 2
        }
      ]
    }
  }
}'''

obj = json.loads(text)

obj

我尝试了obj['aggregations']['range']['buckets']['doc_count']，但它不起作用。如何搜索此JSON文件的层次结构？

Answer 1

您错过了"buckets"键包含列表的事实。你需要：

obj['aggregations']['range']['buckets'][0]['doc_count']

选择存储桶密钥后注意[0]。

Answer 2

因为'buckets'键包含元素数组。你需要

obj['aggregations']['range']['buckets'][0]['doc_count']

如何从我的JSON字符串

2 个答案: