1、dumps：將python中的 字典 轉換為 字串

import json

test_dict = {'bigberg': [7600, {1: [['iPhone', 6300], ['Bike', 800], ['shirt', 300]]}]}
print(test_dict)
print(type(test_dict))
#dumps 將資料轉換成字串
json_str = json.dumps(test_dict)
print(json_str)
print(type(json_str))

2、loads: 將 字串 轉換為 字典

new_dict = json.loads(json_str)
print(new_dict)
print(type(new_dict))
 

3、dump: 將資料寫入json檔案中

with open("../config/record.json","w") as f:
     json.dump(new_dict,f)
     print("載入入檔案完成...")

4、load:把檔案開啟，並把字串變換為資料型別

with open("../config/record.json",'r') as load_f:
    load_dict = json.load(load_f)
    print(load_dict)
load_dict['smallberg'] = [8200,{1:[['Python',81],['shirt',300]]}]
print(load_dict)

with open("../config/record.json","w") as dump_f:
    json.dump(load_dict,dump_f)
 

5、遍歷key value

test_json = {"a":1,"b":2,"c":3}
for key,value in test_json.items():
    print key,value