#!/usr/bin/python# Filename: backup.pyimport osimport time# 1. The files and directories to be backed up are specified in a list.source = [r‘C:\Python34\Doc‘]# 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 directorytarget_dir = r‘D:\Myback\\‘ # Remember to change this to what you will be using# 3. The files are backed up into a zip file.# 4. The name of the zip archive is the current date and timetarget = target_dir + time.strftime(‘%Y%m%d%H%M%S‘) + ‘.zip‘# 5. We use the zip command (in Unix/Linux) to put the files in a zip archivezip_command = r"C:\7-Zip\7z.exe a %s %s" % (target, ‘‘.join(source)) # Run the backupprint (‘zip_command :‘,zip_command)if os.system(zip_command) == 0:    print (‘Successful backup to‘, target)else:    print (‘Backup FAILED‘)