code: def without_strata(shelter):
      check_cox(
          shelter,
          x=[
              "intake_condition",
              "intake_type",
              "animal_breed",
              "chip_status",
              "surv_hours",
          ],
          expected_hazard_cols=["baseline hazard"],
          expected_survival_cols=["baseline survival"],
          stratify_by=[],
      )
  
file_path: h2o-3/h2o-py/tests/testdir_algos/coxph/pyunit_coxph_baseline_names_shelter.py
imports: import sys
  import h2o
  from lifelines import CoxPHFitter
  from pandas.testing import assert_frame_equal
  from pandas import read_csv
  import numpy
  from tests import pyunit_utils
  from h2o.estimators.coxph import H2OCoxProportionalHazardsEstimator
label_desc: Use image node_id 2 for calling a global function with example usage: without_strata(shelter) without return types