code: def test_red():
      # l= 50 (/100), a = 100 (-128 .. 128) b=0 in PS
      # == RGB: 255, 0, 124
      with Image.open("Tests/images/lab-red.tif") as i:
          k = i.getpixel((0, 0))
      assert k == (128, 228, 128)
  
imports: from __future__ import annotations
  from PIL import Image
label_desc: Use image node_id 3 for calling a global function with example usage: test_red() without return types