code: def test_preserved_palette_length(self):
      pal_in = palettes.color_palette("Set1", 10)
      pal_out = palettes.color_palette(pal_in)
      assert pal_in == pal_out
  
imports: import colorsys
  import numpy
  import matplotlib
  import pytest
  import numpy.testing
  from seaborn import palettes, utils, rcmod
  from seaborn.external import husl
  from seaborn._compat import get_colormap
  from seaborn.colors import xkcd_rgb, crayons
label_desc: Use image node_id 36 for calling the TestColorPalettes obj's underlying member method code with example usage: obj.test_preserved_palette_length() without return types