python脚本管理日记文件

import shutil
import os
import time

class diary():
def __init__(self,myfilename):
self.myfilename=myfilename

def mydiary(self):
now=time.strftime("%Y-%m-%d_%H-%M-%S",time.localtime(time.time()))
filename=now+'diary.txt'
shutil.copy(self.myfilename,filename)
shutil.move(filename,"diary")

myfile=diary("my.txt")
myfile.mydiary()