How can I convert a CSV file to a JSON file with a nested json object using Python?

Question

I am stuck with a problem where I don't know how I can convert a "nested JSON object" inside a CSV file into a JSON object.

所以我有一个 CSV 文件，其值如下：

数据.csv

1, 12385, {'message': 'test 1', 'EngineId': 3, 'PersonId': 1, 'GUID': '0ace2-02d8-4eb6-b2f0-63bb10829cd4s56'}, 6486D, TestSender1
2, 12347, {'message': 'test 2', 'EngineId': 3, 'PersonId': 2, 'GUID': 'c6d25672-cb17-45e8-87be-46a6cf14e76b'}, 8743F, TestSender2

我写了一个 python 脚本，将这个 CSV 文件转换为一个数组内的 JSON 文件。 这是我使用以下 python 脚本完成的

csvToJson.py

import json
import csv


with open("data.csv","r") as f:
    reader = csv.reader(f)
    data = []
    for row in reader:
        data.append({"id": row[0],
        "receiver": row[1],
        "payload": row[2],
        "operator": row[3],
        "sender": row[4]})

with open("data.json", "w") as f:
    json.dump(data, f, indent=4)

我面临的问题是我没有在“有效负载”中得到正确的值，我想成为一个嵌套的 JSON object。 我得到的结果如下：

数据.json

[
    {
        "id": "1",
        "receiver": " 12385",
        "payload": " {'message': 'test 1'",
        "operator": " 'EngineId': 3",
        "sender": " 'PersonId': 1"
    },
    {
        "id": "2",
        "receiver": " 12347",
        "payload": " {'message': 'test 2'",
        "operator": " 'EngineId': 3",
        "sender": " 'PersonId': 2"
    }
]

So my question is, how can I create a nested JSON object for the "payload" while I'm doing the conversion from CSV to JSON? 我认为主要问题是它被视为字符串而不是 object。

Answer 1

试试下面的。 您可以像以前一样做所有事情，但合并第三列中的所有元素并通过ast.literal_eval加载它。

import json
import csv
import ast    

with open("data.csv","r") as f:
    reader = csv.reader(f,skipinitialspace=True)
    data = [{"id": ident,
             "receiver": rcv,
             "payload": ast.literal_eval(','.join(payload)),
             "operator": op,
             "sender": snd}
            for ident,rcv,*payload,op,snd in reader]

with open("data.json", "w") as f:
    json.dump(data, f, indent=4)