code: def test_shift_drop_nulls_10875() -> None:
      assert pl.LazyFrame({"a": [1, 2, 3]}).shift(
          1
      ).drop_nulls().collect()["a"].to_list() == [1, 2]
  
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 19 for calling a global function with example usage: test_shift_drop_nulls_10875() without return types