python - 为什么Python无法解析此JSON数据？ [关闭](Why can't Python parse this JSON data? [closed])

Question

I have this JSON in a file:

(我在文件中有此JSON：)

{
    "maps": [
        {
            "id": "blabla",
            "iscategorical": "0"
        },
        {
            "id": "blabla",
            "iscategorical": "0"
        }
    ],
    "masks": [
        "id": "valore"
    ],
    "om_points": "value",
    "parameters": [
        "id": "valore"
    ]
}

I wrote this script to print all of the JSON data:

(我编写了以下脚本来打印所有JSON数据：)

import json
from pprint import pprint

with open('data.json') as f:
    data = json.load(f)

pprint(data)

This program raises an exception, though:

(但是，该程序会引发异常：)

Traceback (most recent call last):
  File "<pyshell#1>", line 5, in <module>
    data = json.load(f)
  File "/usr/lib/python3.5/json/__init__.py", line 319, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python3.5/json/decoder.py", line 339, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python3.5/json/decoder.py", line 355, in raw_decode
    obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting ',' delimiter: line 13 column 13 (char 213)

How can I parse the JSON and extract its values?

(如何解析JSON并提取其值？)

  ask by michele translate from so

Answer 1

Your data is not valid JSON format.

(您的数据不是有效的JSON格式。)

You have [] when you should have {} :

(您应该有{}时拥有[] ：)

• [] are for JSON arrays, which are called list in Python

  ([]用于JSON数组，在Python中称为list)

• {} are for JSON objects, which are called dict in Python

  ({}用于JSON对象，在Python中称为dict)

Here's how your JSON file should look:

(JSON文件的外观如下：)

{
    "maps": [
        {
            "id": "blabla",
            "iscategorical": "0"
        },
        {
            "id": "blabla",
            "iscategorical": "0"
        }
    ],
    "masks": {
        "id": "valore"
    },
    "om_points": "value",
    "parameters": {
        "id": "valore"
    }
}

Then you can use your code:

(然后，您可以使用您的代码：)

import json
from pprint import pprint

with open('data.json') as f:
    data = json.load(f)

pprint(data)

With data, you can now also find values like so:

(使用数据，您现在还可以找到类似的值：)

data["maps"][0]["id"]
data["masks"]["id"]
data["om_points"]

Try those out and see if it starts to make sense.

(试试看，看看是否有意义。)