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 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'