code: def display_image_file(fn, width='auto', height='auto', preserve_aspect_ratio=None):
      
      with open(os.path.realpath(os.path.expanduser(fn)), 'rb') as f:
          sys.stdout.buffer.write(image_bytes(f.read(), filename=fn,
              width=width, height=height,
              preserve_aspect_ratio=preserve_aspect_ratio))
docs: Display an image in the terminal.
  
      A newline is not printed.
  
      width and height are strings, following the format
  
          N: N character cells.
  
          Npx: N pixels.
  
          N%: N percent of the session's width or height.
  
          'auto': The image's inherent size will be used to determine an appropriate
                  dimension.
  
      preserve_aspect_ratio sets whether the aspect ratio of the image is
      preserved. The default (None) is True unless both width and height are
      set.
  
      See https://www.iterm2.com/documentation-images.html