将字典转换为JSON [英] Converting dictionary to JSON

问题描述

r = {'is_claimed': 'True', 'rating': 3.5}
r = json.dumps(r)
file.write(str(r['rating']))

我无法访问JSON中的数据.我在做什么错了?

I am not able to access my data in the JSON. What am I doing wrong?

TypeError: string indices must be integers, not str

推荐答案

json.dumps()将字典转换为str对象，而不是json(dict)对象！因此，必须使用

json.dumps() converts a dictionary to str object, not a json(dict) object! So you have to load your str into a dict to use it by using json.loads() method

将json.dumps()作为保存方法，将json.loads()作为检索方法.

See json.dumps() as a save method and json.loads() as a retrieve method.

这是代码示例，可以帮助您进一步了解它:

This is the code sample which might help you understand it more:

import json

r = {'is_claimed': 'True', 'rating': 3.5}
r = json.dumps(r)
loaded_r = json.loads(r)
loaded_r['rating'] #Output 3.5
type(r) #Output str
type(loaded_r) #Output dict

这篇关于将字典转换为JSON的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！