code: def test_split_blank_string_with_non_empty(any_string_dtype):
      values = Series(
          ["a b c", "a b", "", " "], name="test", dtype=any_string_dtype
      )
      result = values.str.split(expand=True)
      exp = DataFrame(
          [
              ["a", "b", "c"],
              ["a", "b", None],
              [None, None, None],
              [None, None, None],
          ],
          dtype=any_string_dtype,
      )
      tm.assert_frame_equal(result, exp)
  
imports: from datetime import datetime
  import re
  import numpy
  import pytest
  import pandas
  from pandas import DataFrame, Index, MultiIndex, Series, _testing
  from pandas.tests.strings import _convert_na_value, object_pyarrow_numpy
label_desc: Use image node_id 11 for calling a global function with example usage: test_split_blank_string_with_non_empty(any_string_dtype) without return types