如何获取位于嵌套json不同级别的键值？

Question

首先，这里是json的sn-p：

{
    "messages":
    [
        {
            "id": 460,
            "type": "message",
            "date": "2022-01-01T15:10:19",
            "text": "hello, ",
        },
        {
            "id": 461,
            "type": "message",
            "date": "2022-01-01T15:10:19",
            "text":
            [
                "this ",
                {
                    "type": "bold",
                    "text": "is"
                },
                " the ",
                {
                    "type": "underline",
                    "text": "code"
                },
                " names."
            ]
        },
        {
            "id": 462,
            "type": "message",
            "date": "2022-01-01T15:43:41",
            "text":
            [
                "But, ",
                {
                    "type": "bold",
                    "text": "list, set and string "
                },
                " are already builtin functions, so using these names is not recommended."
            ]
        }
    ]
}

我想使用 Python 来获取“text”键的所有值，它们位于 json 的不同级别，所以我可以将它们合并成一个句子，如下所示：

你好，这是代号。但是list、set和string已经是内置函数，所以不推荐使用这些名称。

我已经尝试了一些本地 dict 操作，还尝试了 Python 中用于 json 的模块 Jmespath，但我仍然无法找到完成它的方法。所以你可能知道我是 Python 的新手，希望我能有一个易于理解的解决方案来实现我的目标。

谢谢。

Answer 1

您可以处理可以找到dict,list,str 的不同数据类型并应用良好的逻辑

• dict : 如果 value 是一个容器 : 在里面搜索
• list : 搜索它的所有元素
• str ：添加它

def search(data, search_key) -> str:
    r = ''
    if isinstance(data, dict):
        for key, value in data.items():
            if isinstance(value, (dict, list)):
                r += search(value, search_key)
            if isinstance(value, str) and key == search_key:
                r += value

    if isinstance(data, list):
        for item in data:
            r += search(item, search_key)

    if isinstance(data, str):
        r += data

    return r

v = {"messages": [
    {"id": 460, "type": "message", "date": "2022-01-01T15:10:19", "text": "hello, "},
    {"id": 461, "type": "message", "date": "2022-01-01T15:10:19",
     "text": ["this ", {"type": "bold", "text": "is"}, " the ",
              {"type": "underline", "text": "code"}, " names."]},
    {"id": 462, "type": "message", "date": "2022-01-01T15:43:41",
     "text": ["But, ", {"type": "bold", "text": "list, set and string "},
              " are already builtin functions, so using these names is not recommended."]}
]}

result = search(v, 'text')
print(result)
# hello, this is the code names.But, list, set and string  are already builtin functions, so using these names is not recommended.