python创建文件备份的脚本

old_f_name = input(“请输入备份的文件路径:”) old_f = open(old_f_name, “r”)

new_f_name = “[复件]” + old_f_name  123.txt -> 123[复件].txt 123 + “[复件]” + .txt  index = old_f_name.rfind(“.”) # 获取.对应的后缀 if index >= 0: # 如果有后缀 new_f_name = old_f_name[:index] + “[复件]” + old_f_name[index:]  else: # 如果没有后缀 new_f_name = old_f_name + “[复件]” new_f = open(new_f_name, “w”)

import osimport timesource = ['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 directorytoday = 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 archivenow = time.strftime('%H%M%S')# Take a comment from the user to create the name of the zip filecomment = 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 thereif 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', targetelse:  print'Backup FAILED'