code: def data():
      return load_iris(return_X_y=True)
  
imports: import numpy
  import pytest
  from sklearn.base import ClassifierMixin, clone
  from sklearn.calibration import CalibrationDisplay
  from sklearn.compose import make_column_transformer
  from sklearn.datasets import load_iris
  from sklearn.exceptions import NotFittedError
  from sklearn.linear_model import LogisticRegression
  from sklearn.metrics import ConfusionMatrixDisplay, DetCurveDisplay, PrecisionRecallDisplay, PredictionErrorDisplay, RocCurveDisplay
  from sklearn.pipeline import make_pipeline
  from sklearn.preprocessing import StandardScaler
  from sklearn.tree import DecisionTreeClassifier, DecisionTreeRegressor
label_desc: Use image node_id 1 for calling a global function with example usage: data() and returns: load_iris