Python, Error, Prediction, Reducing.
the dataset into training and testing sets X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42) # Handle missing values imputer = SimpleImputer(strategy='median') X_train = imputer.fit_transform(X_train) X_test = imputer.transform(X_test) # Scale the features