code: def test_apng_blend_transparency():
      with Image.open("Tests/images/blend_transparency.png") as im:
          im.seek(1)
          assert im.getpixel((0, 0)) == (255, 0, 0)
  
imports: from __future__ import annotations
  import pytest
  from PIL import Image, ImageSequence, PngImagePlugin
label_desc: Use image node_id 8 for calling a global function with example usage: test_apng_blend_transparency() without return types