json与字典相互转换

1.将字典转成json

import json

dic = {'name':'wangyujian','sex':'男','age':18}

js = json.dumps(dic,ensure_ascii=False)   # ensure_ascii=False 将字典中的中文编码转换一下，不然输出时显示的是ASCII码

print(js)

2.将字典转成json并存放在文件中

import json

dic = {'name':'wangyujian','sex':'男','age':18}

js = open('a.json','w',encoding='utf-8')

json.dump(dic,js,ensure_ascii=False,indent=4)  # indent代表首行缩进多少行

3.将json转成字典

import json

js = '{"name":"wangyujian","sex":"男","age":18}'

dic = json.loads(js)

print(dic)

4.从文件中读取json，并转化成字典

import json

js = open('a.json','r',enconding='utf-8')

dic = json.load(js)

print(dic)