Python简明教程之一键备份

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问题：Linux和Windows下一键压缩多个文件
要求如下：
1.需要备份的文件和目录由一个列表指定
2.备份应该保存在主备份目录中
3.文件备份成一个zip文件
4.zip存档的名称是当时的日期和时间
5.我们用标准的zip命令，它通常默认地随Linux/Unix发行提供。Windows用户可用Info-Zip程序。

脚本如下：

# -*- coding:utf-8 -*-
#Filename:backup_ver3.py

import os
import time

#1.The first and directories to be backed up are specified in a list
source = ['/home/kanshan/Desktop/python_demon','/home/kanshan/Desktop/site' ]
#If you are using WIndows, use source = [r'C:\Documents', r'D:\Work'] or something like that

#2.The backup must be stored in a main backup directory
target_dir = '/home/kanshan/Desktop/'

#3.The files are backed up into a zip file
#4.The current day is the name of the subdirectory in the main directory
today = target_dir + time.strftime('%Y%m%d')
#The current time is the name of the zip archieve
now = time.strftime('%H%M%S')

#Take a comment from the user to creat the name of the zip file
comment = input("Enter a comment -->")
print(len(comment))
if len(comment) == 0:
    target = today + os.sep + now + '.zip'
else:
    target = today + os.sep + now + '_' + comment.replace(' ','_') + '.zip'

#Create the subdirectory if it is not already there
if not os.path.exists(today):
    os.mkdir(today)   #make directory
    print("Sucessful created directory",today)

#5.We use the zip command (in Linux/Unix) to put the files in a zip archive
zip_command = "zip -qr '%s' %s" % (target, ' '.join(source))

#Run the backup 
if os.system(zip_command) == 0:
    print ( "Successful backup to",target )
else:
    print ( "Backup Failed" )

运行结果如下

文件目录备份.png