data.json的資料如下：
{
 "name":"中國",
 "province":[
 {
       "name1":"多測師",
       "city1":"上海多測師"
   },
   {
   "name2":"多測師",
       "city2":"上海多測師"
   },
   {
   "name3":"多測師",
       "city3":"上海多測師"
   },
   {
   "name4":"多測師",
       "city4":"上海多測師"

   }
 ]
}

#coding=utf-8
"""
===========================
Author:多測師_王sir
Time:2020-09-08 13:51
Wechat:xiaoshubass
website:www.duoceshi.cn
===========================
 
"""

import json

new_dict = {}
def to_dict(dict1):
    '''封裝一個轉換為字典的函式'''
    for k,v in dict1.items():
        if isinstance(v,dict):
            to_dict(v)
        elif isinstance(v,list):
            for j in v:
                to_dict(j)
        else:
            new_dict[k] = v
    return new_dict

 
def read_json(path):
    list1=[]
    dict2={}
    o = open(path,'r',encoding='utf-8')
    all = o.read()
    dict1 = json.loads(all)
    value = to_dict(dict1)
    name = input('請輸入您想要提取的鍵：')
    if name in value:
        dict2.setdefault(name,value[name])  #如果自己輸入的鍵在字典裡面就新增鍵值對到dict2裡面
        list1.append(dict2)
    
 
print(list1)

if __name__ == '__main__':
    read_json('C:\project\dcs6\decorator\data.json')