python删除空文件夹

import os

def delete_gap_dir(dir):
  if os.path.isdir(dir):
    for d in os.listdir(dir):
      #print('1',os.path.join(dir, d))

      path = os.path.join(dir, d)
      if os.path.isdir(path) and not path.endswith('pic_neg'):
        delete_gap_dir(path)
    if not os.listdir(dir):
      #print('空文件夹：' + dir)
      os.rmdir(dir)
      print('移除空目录: ' + dir)
    #else:
      #print(dir)
# delete_gap_dir(os.getcwd())

if __name__ == "__main__":
  dir = r'C:\newpython\123'
  delete_gap_dir(dir)
  print(u'删除完毕')