code: def test_webp_transparency():
      assert (
          features.check("transp_webp") != _webp.WebPDecoderBuggyAlpha()
      )
      assert features.check("transp_webp") == _webp.HAVE_TRANSPARENCY
  
file_path: pillow/Tests/test_features.py
imports: from __future__ import annotations
  import io
  import re
  import pytest
  from PIL import features
  from .helper import skip_unless_feature
label_desc: Use image node_id 3 for calling a global function with example usage: test_webp_transparency() without return types