使用Python解析JSON：TypeError：list indices必须是整数，而不是str

Question

我正在使用Python来解析特定值的一些JSON数据。 具体来说，我想提出以下内容：

• AUTHOR_ID
• created_at
• 上市

Python代码看起来像;

import json
import requests

# Set the request parameters
url = 'https:<MYURL.json'
user = 'MY_USER'
pwd = 'MY_PWD'

# Do the HTTP get request
response = requests.get(url, auth=(user, pwd))

# Check for HTTP codes other than 200
if response.status_code != 200: 
print('Status:', response.status_code, 'Problem with the request. Exiting.')
exit()

# Decode the JSON response
data = response.json()

# Print each value

field_list = data['audits']
for fields in field_list:
print(fields['author_id'])
print(fields['created_at'])
print(fields['events']['public'])
print '\n'

我的代码错误：

File "get_ticket_updates.py", line 27, in <module>
print(fields['events']['public'])
TypeError: list indices must be integers, not str

我得到public的值是一个字符串，它需要是整数所以，我怎么能用这个？

数据看起来像：

{

"audits": [
    {

        "id": 20994687984,
        "ticket_id": ####,
        "created_at": "2014-09-15T16:30:11Z",
        "author_id": 312016568,
        "via": {
            "channel": "email",
            "source": {
                "from": {
                    "address": "email@domain.com",
                    "name": "user name",
                    "original_recipients": [
                        "email@domain.com",
                        "email@domain.com"
                    ]
                },
                "to": {
                    "address": "email@domain.com",
                    "name": "My Portal"
                },
                "rel": null
            }
        },
    },
 {
        "id": 20994845144,
        "ticket_id": ####,
        "created_at": "2014-09-15T16:32:18Z",
        "author_id": 233915468,
        "via": {
            "channel": "web",
            "source": {
                "from": {},
                "to": {},
                "rel": null
            }
        },
        "events": [
            {
                "id": 20994845154,
                "type": "Comment",
                "author_id": 233915468,
                "body": "<SOME TEXT>",
                "public": true,
                "attachments": []
            },

Answer 1

fields['events']['public']内容应该是fields['events'][0]['public']

Answer 2

print(fields['events'][0]['public'])

fields['events']是一个列表，因此您需要使用['events'][0]来访问列表中的dict。

Answer 3

正如错误所说的那样。 fields['events']是一个列表，因此您无法使用['public']对其进行索引。 您需要遍历值，每个值都是字典。

for event in fields['events']:
    print event['public']