code: def test_getitem(self):
      # reload configuration
      importlib.reload(chartify)
  
      palette = chartify.color_palettes["Category20"]
      assert isinstance(palette, chartify._core.colors.ColorPalette)
      assert palette.name == "Category20"
  
file_path: chartify/tests/test_colors.py
imports: import chartify
  import importlib
  import numpy
label_desc: Use image node_id 1 for calling the TestColorPalettes obj's underlying member method code with example usage: obj.test_getitem() without return types