python模块序列化--json&pickle

 1 #!/usr/bin/env python
 2 # -*- coding:utf-8 -*-
 3 
 4 import json, pickle
 5 
 6 data = {‘k1‘:123, ‘k2‘:‘hello‘}
 7 
 8 ## json
 9 # json.dumps 将数据通过特殊的形式转换为所有程序都识别的字符串
10 j_str = json.dumps(data)
11 print(j_str)        #{"k2": "hello", "k1": 123}
12 
13 # json.loads 读取json.dumps特殊处理后的数据并返回该对象
14 j_str_loads = json.loads(j_str)
15 print(j_str_loads)      #{‘k2‘: ‘hello‘, ‘k1‘: 123}
16 
17 # json.dump 将数据通过特殊的形式转换为所有程序都识别的字符串，并写入文件
18 with open(‘file.json‘, ‘w‘) as fp:
19     json.dump(data, fp)
20 
21 with open(‘file.json‘, ‘r‘) as fp:
22     data_j_load = json.load(fp)
23 print(data_j_load)      #{‘k2‘: ‘hello‘, ‘k1‘: 123}
24 
25 
26 ## pickle
27 # pickle.dumps将数据通过特殊的形式转换成只有python语言能识别的字符串
28 p_str = pickle.dumps(data)
29 print(p_str)       #b‘\x80\x03}q\x00(X\x02\x00\x00\x00k2q\x01X\x05\x00\x00\x00helloq\x02X\x02\x00\x00\x00k1q\x03K{u.‘
30 
31 # pickle.loads 读取pickle.dumps特殊处理后的数据并返回该对象
32 p_loads = pickle.loads(p_str)
33 print(p_loads)      #{‘k2‘: ‘hello‘, ‘k1‘: 123}
34 
35 # pickle.dump将数据通过特殊的形式转换成只有python语言识别的字符串，并写入文件
36 with open(‘file.pickle‘, ‘wb‘) as fp:
37     pickle.dump(data, fp)
38 
39 # pickle.loads 从文件中读取pickle.dumps特殊处理后的数据并返回该对象
40 with open(‘file.pickle‘, ‘rb‘) as fp:
41     data_p_load = pickle.load(fp)
42 print(data_p_load)        #{‘k2‘: ‘hello‘, ‘k1‘: 123}