code: def painting(clip, saturation=1.4, black=0.006):
      """
      Transforms any photo into some kind of painting. Saturation
      tells at which point the colors of the result should be
      flashy. ``black`` gives the amount of black lines wanted.
      Requires Scikit-image or Scipy installed.
      """
      return clip.image_transform(
          lambda im: to_painting(im, saturation, black)
      )
  
label_desc: Use image node_id 2 for calling a global function with example usage: painting(clip, saturation, black) and returns: clip