code: def test_xs_list_indexer_droplevel_false(self):
      # GH#41760
      mi = MultiIndex.from_tuples(
          [("x", "m", "a"), ("x", "n", "b"), ("y", "o", "c")]
      )
      df = DataFrame([[1, 2, 3], [4, 5, 6]], columns=mi)
      with pytest.raises(KeyError, match="y"):
          df.xs(("x", "y"), drop_level=False, axis=1)
  
imports: import re
  import numpy
  import pytest
  from pandas.errors import SettingWithCopyError
  from pandas import DataFrame, Index, IndexSlice, MultiIndex, Series, concat
  import pandas._testing
  from pandas.tseries.offsets import BDay
label_desc: Use image node_id 19 for calling the TestXSWithMultiIndex obj's underlying member method code with example usage: obj.test_xs_list_indexer_droplevel_false() without return types