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1path = untar_data(URLs.PETS)/'images'
2
3def is_cat(x): return x[0].isupper()
4dls = ImageDataLoaders.from_name_func(
5 path, get_image_files(path), valid_pct=0.2, seed=42,
6 label_func=is_cat, item_tfms=Resize(224))
7
8learn = cnn_learner(dls, resnet34, metrics=error_rate)
9learn.fine_tune(1)