[Python知识库]#python学习笔记（十八）#解析JSON

目录

1 JSON结构

2 解析JSON

1 JSON结构

▲JSON结构

{
    "name" : "Chuck",
    "phone" : {
        "type" : "intl",
        "number" : "+1 734 303 4456"
    },
    "email" : {
        "hide" : "yes"
    }
}

▲XML结构

<person>
    <name>Chuck</name>
    <phone type="intl">
        +1 734 303 4456
    </phone>
    <email hide="yes" />
</person>

▲JSON与XML的区别：

XML可以在元素中添加attribute属性，如<phone type="intl">?，而JSON中只有key-value对；

XML中有顶级元素<person>，而JSON最外层为{}

2 解析JSON

▲利用JSON库解析

▲示例一：

import json
data = '''
{
    "name" : "Chuck",
    "phone" : {
        "type" : "intl",
        "number" : "+1 734 303 4456"
    },
    "email" : {
        "hide" : "yes"
    }
}'''

info = json.loads(data)###json.loads解析JSON
print(info)
print(type(info))
print('User count:', len(info))


print('Name', info['name'])
print('phone number', info['phone']['number'])

▲示例二：?

import json
data = '''
[
    { "id" : "001",
        "x" : "2",
        "name" : "Chuck"
    } ,
    { "id" : "009",
        "x" : "7",
        "name" : "Brent"
    }
]'''

info = json.loads(data)###json.loads解析JSON
print(info)###info为包含两个字典的列表
print(type(info))###list
print('User count:', len(info))

for item in info:###列表循环输出
    print('Name', item['name'])
    print('Id', item['id'])
    print('Attribute', item['x'])