json模块

 1 import json
 2 x="[null,true,false,1]"
 3 # print(eval(x))
 4 print(json.loads(x))
 5 import json
 6 l = [1,2,3]
 7 data_l = json.dumps(l)
 8 print(data_l)
 9 print(type(data_l))
10 
11 dic = {"name":"sttttt"}
12 f = open(‘json_test‘,‘w‘)
13 f.write(json.dumps(dic))      #写入json转化为字符串的字典
14 f.close()
15 
16 f = open(‘json_test‘,‘r‘)
17 data = json.loads(f.read())   #把json转化为字符串的字典转换回字典
18 print(data,type(data))
19 
20 f = open(‘json_test‘,‘w‘)
21 json.dump(dic,f)              #json.dump写入json转化为字符串的字典
22 
23 f = open(‘json_test‘,‘r‘)
24 data = json.load(f)             #把json.dumo转化为字符串的字典用json.load转换回字典
25 print(data,type(data))