text: import shutil
  import os
  
  source_folder = '/home/ljm/NiuChuang/AuroraObjectData/img/'
  names_file = '/home/ljm/NiuChuang/AuroraObjectData/test_spread_416_d60s.txt'
  save_folder = '/home/ljm/NiuChuang/AuroraObjectData/img_test/'
  img_type = '.jpg'
  if not os.path.exists(save_folder):
      os.mkdir(save_folder)
  
  f = open(names_file, 'r')
  lines = f.readlines()
  num_img = len(lines)
  
  for i in range(num_img):
      img_file = source_folder + lines[i][0:-1] + img_type
      save_file = save_folder + lines[i][0:-1] + img_type
      shutil.copy(img_file, save_file)
  