为什么Python无法解析此JSON数据? [英] Why can't Python parse this JSON data?

问题描述

我在文件中包含此JSON:

I have this JSON in a file:

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

我编写了此脚本来打印所有JSON数据:

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

import json
from pprint import pprint

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

pprint(data)

该程序会引发异常，但:

This program raises an exception, though:

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)

如何解析JSON并提取其值?

How can I parse the JSON and extract its values?

推荐答案

您的数据无效 JSON 格式.您应该拥有{}的时候拥有[]:

Your data is not valid JSON format. You have [] when you should have {}:

• []用于JSON数组，在JSON中称为list
• {}用于JSON对象，在Python中称为dict

• [] are for JSON arrays, which are called list in Python
• {} are for JSON objects, which are called dict in Python

这是您的JSON文件的外观:

Here's how your JSON file should look:

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

然后您可以使用您的代码:

Then you can use your code:

import json
from pprint import pprint

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

pprint(data)

有了数据，您现在还可以找到类似的值:

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

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

尝试一下，看看是否有意义.

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

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