字典 dict 和 json 如何相互转化, 将字典数据转 json 格式写入文件，然后从文件中读取出来还原为字典。

知识点

• 文件读写
• 基础语法
• 多级字典
• json

代码展示

使用的模块

import platform
import json

输入多级字典数据

input_dict = {
    "students": [
        {"name": "John", "age": "15"},
        {"name": "Anna", "age": "16"},
        {"name": "Peter", "age": "16"}
    ],
    "teachers": [
        {"name": "Jack", "age": "30"},
        {"name": "Jessy", "age": "33"}
    ]}

print("输入数据: ", input_dict)

字典 dict 转 json, 写入文件

def dict_to_json():

    with open("py013.json", "w") as f:
        f.write(json.dumps(input_dict, indent=4))

json 转 字典 dict , 从文件读取

def json_to_dict():

    with open("py013.json") as f:
        output_dict = json.loads(f.read())

全部代码

import platform
import json

print("孟曰：如欲平治天下，当今之世，舍我其谁也？")
print("字典 dict 和 json 如何相互转化 ")

input_dict = {
    "students": [
        {"name": "John", "age": "15"},
        {"name": "Anna", "age": "16"},
        {"name": "Peter", "age": "16"}
    ],
    "teachers": [
        {"name": "Jack", "age": "30"},
        {"name": "Jessy", "age": "33"}
    ]}

print("输入数据: ", input_dict)

def dict_to_json():

    with open("py013.json", "w") as f:
        f.write(json.dumps(input_dict, indent=4))

def json_to_dict():

    with open("py013.json") as f:
        output_dict = json.loads(f.read())

    print("json 转字典的结果: ", output_dict)

dict_to_json()

json_to_dict()

print("Python 版本", platform.python_version())

效果展示

Json 格式数据

{
    "students": [
        {
            "name": "John",
            "age": "15"
        },
        {
            "name": "Anna",
            "age": "16"
        },
        {
            "name": "Peter",
            "age": "16"
        }
    ],
    "teachers": [
        {
            "name": "Jack",
            "age": "30"
        },
        {
            "name": "Jessy",
            "age": "33"
        }
    ]
}

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