python json模块

import json

dic = {"name":"liao","age":18}
data = json.dumps(dic)              #转化为json字符串
print(data)     #===>{"name": "liao", "age": 18}
print(type(data))    #===> <class 'str'>               #字符串

f = open("json1","w")
f.write(data)
f.close()

f1 = open("json1","r")
r = f1.read()         #读出来的是字符串
print(json.loads(r))   #===> {'name': 'liao', 'age': 18}               #通过json转为字典
print(type(json.loads(r)))  #===><class 'dict'>            #字典
f1.close()