Support to lint JupyterNotebook

[santhoshramaraj]

How would one lint Jupyter Notebooks using ni-python-styleguide?

[mshafer-NI]

Great question.

Since ni-python-styleguide is a flake8 aggregator, I tried following this SO:
https://stackoverflow.com/a/47204361 (even though invoking flake8 directly will miss the configs ni-python-styleguide provides); however, I keep getting errors in JupyterLab (AttributeError: '_io.StringIO' object has no attribute 'buffer') so I'm not sure the proposed solution there is up to date...