python如何读取和存储dict()与.json格式文件

# -*- coding: utf-8 -*-
import json
import codecs

data = []
with codecs.open("hg.json", "r", "utf-8") as f:
    for line in f:
        dic = json.loads(line)
        data.append(dic)
        print(json.dumps(dic, indent=4, ensure_ascii=False, encoding='utf-8'))

dic = {"商家名称": "井格老灶火锅(望京新世界店)", "评分": 26.2, "地址": "火锅望京广顺南大街路16号", "人均消费": 105, "评论数量": 1387}
with codecs.open('hg.json','a', 'utf-8') as outf:
    json.dump(dic, outf, ensure_ascii=False)
    outf.write('\n')

dic = {"北京": [446, 208.7, 110000], "天津": [454.2, 219.8, 120000], "上海": [498.6, 319.7, 310000]}
print(json.dumps(dic, ensure_ascii=False, encoding='utf-8', indent=4))

user = "{'name' : 'LiHua', 'sex' : 'male', 'age': 18}"
dic1 = eval(user)
exec("dic2="+user)

>>> s = '{"name":"ACME", "SHARES":50, "PRICE":490}'
>>> from collections import OrderedDict
>>> data = json.load(s, object_pairs_hook=OrderedDict)
>>> data
OrderedDict([('name', 'ACME'), ('shares', 50), ('price', 490)]
>>>

with open('./medical.json', 'w',encoding='utf-8') as fp:
   json.dump(data, fp)

with open('./medical.json', 'w',encoding='utf-8') as fp:
   json.dump(data, fp,ensure_ascii=False)