Jeremy Howard developed the fastai library using Jupyter Notebooks and his nbdev tool[1]. I'm not saying that to disagree with your claim - I don't have enough

Jeremy Howard developed the fastai library using Jupyter Notebooks and his nbdev tool[1]. I'm not saying that to disagree with your claim - I don't have enough experience with Jupyter Notebooks yet to have much of a strong opinion on whether or not it discourages modularity. Just that folks who want to have the best of both worlds might be interested in how it can be done. My first thought is that it looks like Donald Knuth's literate programming ideas put to practice, and it has me excited about programming again. [1] https://github.com/fastai/nbdev https://github.com/fastai/nbdev