Not able to get URLs.MNIST running

Part 1 (2020)
1

Hi dear community! I try now for some time getting the normal MNIST dataset running -> not possible what I have tried:

  1. DataBlock
    mnist = DataBlock(blocks=(ImageBlock(cls=PILImageBW), CategoryBlock),
    get_items = get_image_files,
    splitter = GrandparentSplitter(train_name=“training”, valid_name=“testing”),
    get_y = parent_label)

dls = mnist.dataloaders(path)

-> I get this error! (for inference only):

image
image1158×25 8.48 KB

  1. ImageDataLoaders
    ImageDataLoaders.from_folder(path, train=“training”, valid=“testing”)

  2. DataBunch (I do not want to switch to Fastai v1 just for this problem there must be an other solution)
    datapath = untar_data(URLs.MNIST)
    data = ImageDataBunch.from_folder(path=datapath, train=‘training’, test=‘testing’, valid_pct=0.2)
    learn = cnn_learner(data,base_arch=models.resnet34, metrics= [error_rate, accuracy])
    learn.fit_one_cycle(4)

I really do not know what to do further … 2 basically worked but the accuracy is about as good as choosing randomly.

Please help me out :slight_smile:

Best Regards,
mlAlex