code: def test_rgb_to_hsl_part_2():
      """Test rgb to hsl color function"""
      # assert rgb_to_hsl(255, 0, 0) == (360, 100, 50)
      # assert rgb_to_hsl(255, 255, 0) == (420, 100, 50)
      # assert rgb_to_hsl(0, 255, 0) == (480, 100, 50)
      # assert rgb_to_hsl(0, 255, 255) == (540, 100, 50)
      # assert rgb_to_hsl(0, 0, 255) == (600, 100, 50)
      # assert rgb_to_hsl(255, 0, 255) == (660, 100, 50)
      pass
  
imports: from __future__ import division
  from pygal.colors import darken, desaturate, hsl_to_rgb, lighten, parse_color, rgb_to_hsl, rotate, saturate, unparse_color
label_desc: Use image node_id 13 for calling a global function with example usage: test_rgb_to_hsl_part_2() without return types