code: def test_none_comparison_4773() -> None:
      df = pl.DataFrame(
          {
              "x": [0, 1, None, 2],
              "y": [1, 2, None, 3],
          }
      ).filter(pl.col("x") != pl.col("y"))
      assert df.shape == (3, 2)
      assert df.rows() == [(0, 1), (1, 2), (2, 3)]
  
imports: from __future__ import annotations
  from datetime import datetime, timedelta
  from typing import Any
  import numpy
  import pandas
  import polars
  from polars.testing import assert_frame_equal
label_desc: Use image node_id 17 for calling a global function with example usage: test_none_comparison_4773() without return types