When in doubt, and doesn’t look like fastai has it, check my repo walk with fastai2 
Bengali.AI here is an example using 4 getters, 3 labels and an input image via ColReaders.
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When in doubt, and doesn’t look like fastai has it, check my repo walk with fastai2 Bengali.AI here is an example using 4 getters, 3 labels and an input image via ColReaders.