code: def test_no_period(default_kwargs):
      class_kwargs, _, _ = _to_class_kwargs(default_kwargs)
      del class_kwargs["period"]
      class_kwargs["endog"] = pd.Series(class_kwargs["endog"])
      with pytest.raises(
          ValueError, match="Unable to determine period from"
      ):
          STL(**class_kwargs)
  
imports: from statsmodels.compat.pandas import MONTH_END
  import os
  import pickle
  import numpy
  from numpy.testing import assert_allclose
  import pandas
  import pytest
  from statsmodels.datasets import co2
  from statsmodels.tsa.seasonal import STL, DecomposeResult
label_desc: Use image node_id 19 for calling a global function with example usage: test_no_period(default_kwargs) without return types