通過shelve模塊即可持久化對象

• 代碼

import shelve
import numpy as np

def writeObj(name,obj):
    with shelve.open(‘object‘) as db:
        db[name]=obj

def readObj(name):
    try:
        with shelve.open(‘object‘) as db:
            return db[name]
    except BaseException:
        return None

if __name__ == ‘__main__‘:
    a=np.array([1,2,3])
    writeObj(‘arr‘,a)
    print(readObj(‘arr‘))
    pass
 

吧一個對象持久化之後，不需要import原來對象依賴的庫，就可以調用對象所有的屬性、方法：

python持久化對象