text: from fastai.vision.all import *
  from matplotlib import pyplot as plt
  
  path = untar_data(URLs.CAMVID_TINY)
  dls = SegmentationDataLoaders.from_label_func(
      path, bs=8, fnames = get_image_files(path/"images"),
      label_func = lambda o: path/'labels'/f'{o.stem}_P{o.suffix}',
      codes = np.loadtxt(path/'codes.txt', dtype=str)
  )
  
  learn = unet_learner(dls, resnet34)
  learn.fine_tune(8)
  learn.show_results(max_n=6, figsize=(7,8))
  plt.show()