import os
import time
source='C:\\Linda\\Test\\Python\\source'
target_dir='C:\\Linda\\Test\\Python\\backup\\'
target=target_dir + time.strftime('%Y%m%d%H%M%S')+'.rar'
print(target)
rar_command = "winrar a %s %s"%(target,source)
print (rar_command)
if os.system(rar_command)==0:
print ('Succeed to backup to', target)
else:
print ("Backup FAILED")