python压缩文件夹内所有文件为zip文件的方法

import zipfile
z = zipfile.ZipFile('my-archive.zip', 'w', zipfile.ZIP_DEFLATED)
startdir = "/home/johnf"
for dirpath, dirnames, filenames in os.walk(startdir):
 for filename in filenames:
  z.write(os.path.join(dirpath, filename))
z.close()