python采用json.dump和json.load存储数据

#!/usr/bin/python
# -*- coding: UTF-8 -*-
import json
numbers = [2,3,4,7,11,13]

filename = 'numbers.json'
with open(filename,'w') as f:
     json.dump(numbers,f)

with open(filename,'r') as ss:
     a = json.load(ss)
print(a)