code: def test_rolling_skew_lagging_null_5179() -> None:
      s = pl.Series(
          [
              None,
              3,
              4,
              1,
              None,
              None,
              None,
              None,
              3,
              None,
              5,
              4,
              7,
              2,
              1,
              None,
          ]
      )
      assert s.rolling_skew(3).fill_nan(-1.0).to_list() == [
          None,
          None,
          0.0,
          -0.3818017741606059,
          0.0,
          -1.0,
          None,
          None,
          -1.0,
          -1.0,
          0.0,
          0.0,
          0.38180177416060695,
          0.23906314692954517,
          0.6309038567106234,
          0.0,
      ]
  
imports: from __future__ import annotations
  from datetime import date, datetime, timedelta
  from typing import TYPE_CHECKING
  import numpy
  import pytest
  from numpy import nan
  import polars
  from polars.exceptions import ComputeError
  from polars.testing import assert_frame_equal, assert_series_equal
label_desc: Use image node_id 11 for calling a global function with example usage: test_rolling_skew_lagging_null_5179() without return types