message: Fix plot_model for PDF
diff: @@ -293,6 +293,7 @@ def plot_model(model,
  # Return the image as a Jupyter Image object, to be displayed in-line.
  # Note that we cannot easily detect whether the code is running in a
  # notebook, and thus we always return the Image if Jupyter is available.
  + if extension != 'pdf':
  try:
  from IPython import display
  return display.Image(filename=to_file)
  