python文件备份脚本

import os

import time

source = ['D:\\MyDrivers\hotfix'] #这里可以用自然字符串表示r',因为windows下的分隔符

与python的有冲突,所以需要转义字符\

# 2. 备份文件到目标路径

target_dir = 'F:\\DMDownLoad\\' #这里的末尾一定不要丢分隔符,否者创建的文件会在F:目录下,

而不会在DMDownload目录下

# 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') #time.strftime表示对当前时间的调用,括号内为参数设定

# The current time is the name of the zip archive

now = time.strftime('%H%M%S')

# Take a comment from the user to create the name of the zip file

comment = raw_input('Enter a comment -->')

if len(comment)==0:

target = today+os.sep+now+'.zip'

#os.sep表示目录符号,windows下是\\,linux下是/,mac下是:,这里为了保证移植性,

所以os.sep会根据系统给出分隔符

else:

target = today+os.sep+now+'_'+\

comment.replace(' ','_')+'.zip'

# Notice the backslash!

# Create the subdirectory if it isn't already there

if not os.path.exists(today):

os.mkdir(today) # make directory

print('Successfully created directory', today)

# 5. 用winrar的rar命令压缩文件,但首先要安装有winrar且设置winrar到环境变量的路径path中

zip_command = "rar a %s %s" %(target,''.join(source))

#这行命令之前的所有target 、target_dir、today这些都是字符串,只有在

这个命令和os.makedir中才是真正的表示路径

# Run the backup

#设置winrar到path环境中,这里已经手动添加了,如果没有去掉#号

#os.system('set Path=%Path%;C:\Program Files\WinRAR')

if os.system(zip_command)==0:

print'Successful backup to', target

else:

print'Backup FAILED'