code: def save_image(tensor, filename, nrow=8, padding=2, pad_value=0):
      
      from PIL import Image
      grid = make_grid(tensor, nrow=nrow, padding=padding, pad_value=pad_value)
      im = Image.fromarray(pre_pillow_float_img_process(grid))
      im.save(filename)
docs: Save a given Tensor into an image file.
  
      Args:
          tensor (Tensor or list): Image to be saved. If given a mini-batch tensor,
              saves the tensor as a grid of images by calling ``make_grid``.
          **kwargs: Other arguments are documented in ``make_grid``.