Python——处理json文件

转载来源： https://blog.csdn.net/lwbeyond/article/details/61198555

123.json

[
    {
            "Country Name": "Arab World",
            "Country Code": "ARB",
            "Year": "1960",
            "Value": "96388069"
    },
    {
            "Country Name": "Arab World",
            "Country Code": "ARB",
            "Year": "1961",
            "Value": "98882541.4"
    }
]

repositories.json

{
     "fontFamily": "微软雅黑",
     "fontSize": 12,
     "BaseSettings":{
         "font":1,
         "size":2
                    }
}

 

读取json写入txt

import json
import os


def opera_file1():
    document = open("testfile.txt", "w+")
    # print("文件名: ", document.name)
    document.write("这是我创建的第一个测试文件！\nwelcome!")
    print(document.tell())

    # 输出当前指针位置
    document.seek(os.SEEK_SET)

    # 设置指针回到文件最初
    context = document.read()
    print(context)
    document.close()


def opera_file2(str_content):
    with open("testfile.txt", "w+") as f:
        f.write(str_content)


# 读取 {字典} 类型的 json 文件：
# 设置以utf-8解码模式读取文件，encoding参数必须设置，否则默认以gbk模式读取文件，当文件中包含中文时，会报错
def json_dict():
    f = open("repositories.json", encoding='utf-8')
    setting = json.load(f)

    # 注意多重结构的读取语法
    family = setting['BaseSettings']['font']
    style = setting['fontFamily']

    print(family)
    print(style)


# 读取【列表】格式的 json 文件
# 将数据加载到一个列表中
def json_list():
    filename = 'C:/Users/Administrator/Desktop/123.json'   # 注意点1：绝对路径的写法
    temp_content = ''
    with open(filename, encoding='utf-8') as f:
        pop_data = json.load(f)

        # 打印每个国家2010年的人口数量
        for pop_dict in pop_data:
            country_name = pop_dict['Country Name']
            population = pop_dict['Value']
            temp_content += country_name + ' : ' + population + " ;\n"
            # print(country_name + ": " + population)
        opera_file2(temp_content)
        # print(temp_content)  # 打印出json最终的字符串


json_list()
# json_dict()