python学习笔记-Day6(1)

shelve模块是一个简单的k,v将内存数据通过文件持久化的模块，可以持久化任何pickle可支持的python数据格式

>>> s=shelve.open('test')
>>> name=['a','b']
>>> name = ['a','b']
>>> s['t'] =name
>>> s.get('t')
['a', 'b']
>>>
>>> n = s.get('t')
>>> n[0]
'a'

　　

import shelve

d = shelve.open('shelve_test') #打开一个文件 

class Test(object):
    def __init__(self,n):
        self.n = n

t = Test(123)
t2 = Test(123334)

name = ["alex","rain","test"]
d["test"] = name #持久化列表
d["t1"] = t      #持久化类
d["t2"] = t2

d.close()