Fastai/Pytorch - doesn't do "fitting" in RMarkdown

Machine Learning and Modeling
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Hey all,

I am trying to copy a lesson from fast.ai -- specifically, the one from this github document (in a jupyter notebook).

My goal is to run it in an RMarkdown document, with some code chunks as R (for the data munging) and some as Python (for the fastai/pytorch code itself).

It works well until I run the learn.fit() function -- I get the error ValueError: I/O operation on closed file.

Does anyone know what might be causing this?

Thanks,

Alan

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