如何从给定JSON数据中提取所有itog字段值并返回对应新数组

核心逻辑 #

• 遍历源JSON数组的所有顶层元素
• 依次读取每个元素下0属性对应的对象
• 提取该对象中itog字段的数值
• 将所有数值汇总为新数组即为目标结果

代码实现示例 #

JavaScript版本 #

const sourceData = [
    {
      "0": {
        "itog": 12860498,
        "return": 1107294,
        "beznal": 10598131
      },
      "date": "2021-01-31"
    },
    {
      "0": {
        "itog": 20156554,
        "return": 1147363,
        "beznal": 18127393
      },
      "date": "2021-02-28"
    },
    {
      "0": {
        "itog": 19187309,
        "return": 1667656,
        "beznal": 17597434
      },
      "date": "2021-03-31"
    }
];
const result = sourceData.map(item => item['0'].itog);

Python版本 #

source_data = [
    {
      "0": {
        "itog": 12860498,
        "return": 1107294,
        "beznal": 10598131
      },
      "date": "2021-01-31"
    },
    {
      "0": {
        "itog": 20156554,
        "return": 1147363,
        "beznal": 18127393
      },
      "date": "2021-02-28"
    },
    {
      "0": {
        "itog": 19187309,
        "return": 1667656,
        "beznal": 17597434
      },
      "date": "2021-03-31"
    }
]
result = [item['0']['itog'] for item in source_data]

最终输出结果 #

[12860498, 20156554, 19187309]

内容的提问来源于stack exchange，提问作者Васили