python之json&pickle

Posted 2020-12-31 黄泉上的纸船

用于序列化的两个模块：

json：用于字符串和python数类型间进行转换

oickle：用于python特有的类型和python的数据类型间进行转换

json、pickle模块提供四个功能：dumps、dump、loads、load

使用json&pickle将转化成字符串写入文件

 1 import json
 2 import pickle
 3 
 4 def sayhi(name):
 5     print("hello,", name)
 6 
 7 info = {
 8     "name":"guoxf",
 9     "age":"18",
10     "sex":"nan",
11     "func":sayhi
12 }
13 
14 info1 = {
15     "name":"guoxf",
16     "age":"18",
17     "sex":"nan",
18     # "func":sayhi
19 }
20 
21 f = open("a.txt", "wb")
22 # json.dump(info1)    # 两者完全相等 json.dumps(info1)
23 pickle.dump(info, f)    # 两者完全相等 f.write(pickle.dumps(info))
24 f.close()

 

使用json&pickle将文件中的字符串转化成字典读取

 1 import json
 2 import pickle
 3 
 4 def sayhi(name):
 5     print("hello,", name)
 6 
 7 f = open("a.txt", "rb")
 8 # data = json.loads(f.read())
 9 # data = pickle.loads(f.read())
10 data = pickle.load(f)
11 print(data)
12 
13 f.close()
14 
15 print(data["func"]("gxf"))