day18——json

#例子1：把Python的dict格式转换成json字符串格式
import json

a = dict(name = ‘Yangling‘,age = 28,message = ‘you are so cool‘)
print(a)
print(type(a))
b = json.dumps(a)
print(b)
print(type(b))

#例子2：
c = json.loads(b)
print(type(c))
print((c))
print(c[‘name‘])

1 jsondata = ‘{\"a\":1,\"b\":2,\"c\":3,\"d\":4,\"e\":5}‘
2 with open(‘a.txt‘,‘w‘) as f:
3 json.dump(jsondata,f)
4 
5 with open(‘a.txt‘,‘r‘) as fr:
6 m = json.load(fr)
7 print(m)
8 print(type(m))