from sklearn.datasets import load_iris
from sklearn.linear_model import LogisticRegression
from sklearn.model_selection import train_test_split
from sklearn.pipeline import make_pipeline
from sklearn.preprocessing import StandardScaler


iris = load_iris()
X_train, X_test, y_train, y_test = train_test_split(
    iris.data,
    iris.target,
    test_size=0.25,
    stratify=iris.target,
    random_state=42,
)