code: def test_get_features_targets(df):
      """Test one column returned as target and rest as features."""
      X, y = df.clean_names().get_features_targets(
          target_column_names="bell_chart"
      )
      assert X.shape[1] == 4
      assert len(y.shape) == 1
  
imports: import pytest
  from hypothesis import given, settings
  import janitor.ml
  from janitor.testing_utils.strategies import df_strategy
label_desc: Use image node_id 1 for calling a global function with example usage: test_get_features_targets(df) without return types