code: def matplotlib_to_numpy(plt):
      """Convert a matplotlib plot to a numpy array represent it as an image.
  
      Inputs:
        plot - matplotlib plot
  
      Returns:
        A numpy array with shape [W, H, 3], representing RGB values between 0 and 1.
      """
  
      f = io.BytesIO()
      plt.savefig(f, format="png")
      f.seek(0)
      arr = np.array(Image.open(f)).copy()
      f.close()
      return arr / 255.0
  
imports: import io
  import numpy
  from PIL import Image
label_desc: Use image node_id 1 for calling a global function with example usage: matplotlib_to_numpy(plt) and returns: unknown