> it was (and still is) a pain to version control notebooks in a way that’s conducive to collaboration. For practical purposes, you cannot perform code reviews

> it was (and still is) a pain to version control notebooks in a way that’s conducive to collaboration. For practical purposes, you cannot perform code reviews of notebooks on GitHub without purchasing a tool called ReviewNB. I have always been really surprised that the IPython developers made the choice to use JSON despite it being unusable with git (and despite them being excellent software engineers). This is one reason I never use notebooks (though not as big as the difficulty of developing with all that long-lived mutable state). Have they ever commented on this?