code: def test_leaderboard_with_no_algos():
      print(
          "Check leaderboard for excluding all algos (empty leaderboard)"
      )
      ds = import_dataset("binary", split=False)
      exclude_algos = all_algos
      aml = H2OAutoML(
          project_name="py_aml_lb_test_no_algo",
          exclude_algos=exclude_algos,
          max_runtime_secs=10,
          nfolds=2,
          stopping_rounds=1,
          stopping_tolerance=0.5,
          seed=automl_seed,
      )
      aml.train(y=ds.target, training_frame=ds.train)
  
      lb = aml.leaderboard
      assert lb.nrows == 0
      check_leaderboard(aml, exclude_algos, [], None, None)
  
file_path: h2o-3/h2o-py/tests/testdir_algos/automl/leaderboard/pyunit_automl_leaderboard.py
imports: import os
  import sys
  from h2o.automl import H2OAutoML
  from tests import pyunit_utils
  from _leaderboard_utils import all_algos, check_leaderboard
  from _automl_utils import import_dataset, get_partitioned_model_names
label_desc: Use image node_id 3 for calling a global function with example usage: test_leaderboard_with_no_algos() without return types