code: def test_names_glue_wrong_label2(df_checks_output):
      """Raise Warning if _value is in `names_glue`."""
      with pytest.warns(UserWarning):
          df_checks_output.rename(
              columns={"variable": "_value"}
          ).pivot_wider(
              index=["geoid", "name"],
              names_from="_value",
              values_from=["estimate", "error"],
              names_glue="{_value}_{_value}",
          )
  
imports: import numpy
  import pandas
  import pytest
  from pandas.testing import assert_frame_equal
label_desc: Use image node_id 12 for calling a global function with example usage: test_names_glue_wrong_label2(df_checks_output) without return types