ValueError: max_features must be in (0, n_features] in Random Forest

Question

No code appears or error: ValueError: max_features must be in (0, n_features]. I have already tried the Stack solutions and I did not get a solution. Could anyone help?

def predict_RF(x_test_sel, k_vetor, y_train):
    model = RandomForestRegressor()
    model.fit(k_vetor, y_train)
    y_predict = model.predict(x_test_sel)

    kf = KFold(n_splits=3)

    n_estimators = [25, 50, 75, 100] 
    max_features = [0.2, 0,7, 0.5, 1.0]
    min_samples_leaf = [1, 2, 5, 10] 

    hyperF = dict (n_estimators = n_estimators, max_features=max_features, min_samples_leaf = min_samples_leaf) 

    gridF = GridSearchCV(model, hyperF, cv = kf, verbose = 1, n_jobs = -1)

    grid_fit = gridF.fit(k_vetor, y_train) #Fit the gridsearch object with X_train, (k_vetor, y_train) -> dar nome x_train para k_vetor 
    
    print(grid_fit.best_params_)
    
    return (y_predict)

Answer 1

I have had the same problem using max_features as float. I suggest max_features list should contain only integers. For instance: max_features = [2, 5, 7, 10]