code: def test_colors():
      im = hopper()
      colors = 2
      converted = im.quantize(colors)
      assert len(converted.palette.palette) == colors * len("RGB")
  
file_path: pillow/Tests/test_image_quantize.py
imports: from __future__ import annotations
  import pytest
  from packaging.version import parse
  from PIL import Image, features
  from .helper import assert_image_similar, hopper, is_ppc64le, skip_unless_feature
label_desc: Use image node_id 9 for calling a global function with example usage: test_colors() without return types