import Augmentor p = [Augmentor.Pipeline("Images/TrainingImages/glass"), Augmentor.Pipeline("Images/TrainingImages/metal"), Augmentor.Pipeline("Images/TrainingImages/paper"), Augmentor.Pipeline("Images/TrainingImages/plastic")] for i in range(len(p)): p[i].rotate(probability=0.7, max_left_rotation=10, max_right_rotation=10) p[i].zoom(probability=0.5, min_factor=1.1, max_factor=1.5) p[i].sample(1000) p[i].process()