第三十五节，json数据类型转换字符串模块

#!/usr/bin/env python
# -*- coding:utf8 -*-
import json
yhxxi = {   #创建一个嵌套字典
    1:{
        "yonghu":"liguixiou",
        "mima":"12345",
        "youjian":"729088188@qq.com",
        "zichan":700,
    },
    2:{
        "yonghu":"liguixiou2",
        "mima":"123452",
        "youjian":"7290881882@qq.com",
        "zichan":7002,
    }
}
a = json.dumps(yhxxi)   #将字典转换成字符串格式
print(a)    #打印转换的字符串格式
b = open("yh.txt", "w") #以写入模式打开文件
b.write(a) #将转换的字符串写入文件
b.close()   #关闭打开的文件
#输出
# {"1": {"youjian": "729088188@qq.com", "yonghu": "liguixiou", "mima": "12345", "zichan": 700}, "2": {"youjian": "7290881882@qq.com", "yonghu": "liguixiou2", "mima": "123452", "zichan": 7002}}