shelve模块(二十三)

时间:2022-12-13 09:26:18

 

 shelve模块比pickle模块简单,只有一个open函数,返回类似字典的对象,可读可写;

 key必须为字符串,而值可以是python所支持的数据类型

用的比较少

目的: 将字典写入文件保存起来

import shelve

f = shelve.open(r'shelve.txt')  # f 就是一个字典
# f['stu1_info'] = {'name':'a', 'age':18, 'hobby':['pinao','smoking','drinking']}
# f['stu2_info'] = {'name':'b', 'age':20, 'hobby':['pinao','smoking','drinking']}

print(f['stu1_info']['hobby']) # ['pinao', 'smoking', 'drinking']
f.close()