from fastai import *
from fastai.vision import *
from fastai.widgets import DatasetFormatter, ImageCleaner

path = untar_data(URLs.MNIST_SAMPLE)
data = ImageDataBunch.from_folder(path)

learner = create_cnn(data, models.resnet18, metrics=[accuracy])
ds, idxs = DatasetFormatter().from_toplosses(learner, ds_type=DatasetType.Valid)

ImageCleaner(ds, idxs)