4_2 json字符串转Python对象

 1 """json字符串到Python对象"""
 2 
 3 
 4 import json
 5 
 6 json_str = '[{"username": "张三", "age": 18, "country": "china"}, {"username": "lisi", "age": 20, "country": "USA"}]'
 7 # json字符串到Python对象
 8 persons = json.loads(json_str)
 9 print(type(persons))        # <class 'list'>
10 for person in persons:
11     print(person)
12 
13 # 从json文件中读取json数据
14 with open('4_1person.json', 'r', encoding='utf-8') as fp:
15     persons = json.load(fp)
16 print(type(persons))  # <class 'list'>
17 for person in persons:
18     print(person)