如何从数组中删除数据？ ：Python

Question

这是我的rethinkdb数据库中的数据保存。我保存了数据 addtowatchlater是数组。我使用ember.js作为前端和龙卷风 rethinkdb的后端和数据库。

{
    "accesstoken": "ajflasjjfasjfjasfasdfjasjflsajjfas" ,

    "addtowatchlater": [
        {
            "beatdescription":  "aa" ,
            "beatname":  "aa" ,
            "categoryname":  "DJ" ,
            "filename":  "asfasdfasdfasdfa" ,
            "id":  "423423454352342344545423434" ,
            "price":  "aa" ,
            "soldout":  "No" ,
            "stamp":  "1510244267000" ,
            "userid":  "816fbfe8-ea81-4198-98f0-5fb0db01e25e"
        },
        {
            "beatdescription":  "aa" ,
            "beatname":  "aa" ,
            "categoryname":  "DJ" ,
            "filename":  "asfasdfasdfasdfa" ,
            "id":  "423423454352342344545423434" ,
            "price":  "aa" ,
            "soldout":  "No" ,
            "stamp":  "1510244267000" ,
            "userid":  "816fbfe8-ea81-4198-98f0-5fb0db01e25e"}] ,


            "id":  "et4545er5454354354354353" ,

            "role":  "user" ,

            "status":  "Active" ,
        }

我想从addtowatchlater数组字段中删除一个json数据。当我 删除我想要这样的例子。

{
    "accesstoken": "ajflasjjfasjfjasfasdfjasjflsajjfas" ,

    "addtowatchlater": [
        {
            "beatdescription": "aa" , 
            "beatname": "aa" , 
            "categoryname": "DJ" , 
            "filename": "asfasdfasdfasdfa" , 
            "id": "423423454352342344545423434" , 
            "price": "aa" , 
            "soldout": "No" , 
            "stamp": "1510244267000" , 
            "userid": "816fbfe8-ea81-4198-98f0-5fb0db01e25e"
        }
    ] ,

    "id": "et4545er5454354354354353" ,

    "role": "user" ,

    "status": "Active" , 
}

Answer 1

数据是否作为XML文件出现？如果是这样，你可以看到前端的数据，那么你可以在jquery中使用.removedata（）轻松实现。

请参考url attatched。如果你能更详细地阐述你的问题，那么可以再次重访，

这里[链接] http://www.jquerybyexample.net/2012/02/remove-item-from-array-using-jquery.html

https://api.jquery.com/removeData/

Answer 2

首先，将JSON对象转换为Python字典。现在，您可以轻松地使用该数据执行任何操作。

我们假设您的数据如下：

{
    "a": [
        {
            "p": 1, 
            "q": 2
        },
        {
            "x": 3,
            "y": 4
        }
    ],
}

你想要从数组a中删除一个项目，你可以这样做：

import json

data_dict = json.loads(data) # convert data to python dict

data_dict['a'].pop(0) # remove first item from array `a`

# you can convert data_dict back to json if you want
data = json.dumps(data_dict)