code: def save(self, fn:PathOrStr):
          "Save the image to `fn`."
          x = image2np(self.data*255).astype(np.uint8)
          PIL.Image.fromarray(x).save(fnf save(self, fn:PathOrStr):
          "Save the image to `fn`."
          x = image2np(self.data*255).astype(np.uint8)
          PIL.Image.fromarray(x).save(fn)
docs: Save the image to `fn`.