python备份文件例子windows实现

zhouyangchenrui

python备份文件的例子在windows下采用winrar的rar命令运行可以成功，只是要有winrar软件和设置其环境变量。
# Filename: backup_ver4.pyimport osimport time# 1.需要备份的文件目录source = ['F:\\python\\code']# 2. 备份文件到目标路径target_dir = 'F:\\python\\backup\\'# 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')# 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 = input('Enter a comment -->')if len(comment)==0:     target = today+os.sep+now+'.zip'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))# Run the backup#设置winrar到path环境中，这里已经手动添加，如图#os.system('set Path=%Path%;C:\Program Files\WinRAR')if os.system(zip_command)==0:    print('Successful backup to', target)else:    print('Backup FAILED')
设置winrar环境变量如下图：