删除对象数组中的JSON属性 [英] Removing JSON property in array of objects

问题描述

我有一个用Python清理的JSON数组.我要删除imageData属性:

I have a JSON array that I'm cleaning up in Python. I want to remove the imageData property:

data.json

[{"title": "foo", "imageData": "xyz123"},
{"title": "bar", "imageData": "abc123"},
{"title": "baz", "imageData": "def456"}]

我正在设置一个列表理解以删除该属性，但是我不确定如何创建专注于imageData的变量:

I am setting up a list comprehension to remove the property, but I'm not sure how to create the variable that focuses on imageData:

import json

with open('data.json') as json_data:
    data = json.load(json_data)
    clean_data = [ item for item in data if not item['imageData'] ]
    # Write `clean_data` to new json file

当我print列表理解时，它返回一个空数组.我必须纠正什么才能使其正常工作?

When I print the list comprehension, it returns an empty array. What do I have to correct to get this working properly?

推荐答案

一个简单的解决方案是使用del删除就位的不需要的密钥:

An easy solution to your problem is deleting the unwanted key in place, with del:

import json

with open('data.json') as json_data:
    data = json.load(json_data)
    for element in data: 
        del element['imageData'] 

您应该添加一些安全检查，但是您明白了.

You should add some safety checks, but you get the idea.

这篇关于删除对象数组中的JSON属性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！