The package Jeremy Howard uses for Claudette, nbdev, actually does address the notebook pain points of version control, testing, integration, and deployment: ht

The package Jeremy Howard uses for Claudette, nbdev, actually does address the notebook pain points of version control, testing, integration, and deployment: https://nbdev.fast.ai/ https://nbdev.fast.ai/ (Debugging is already a strong point of developing within a notebook.) But it's admittedly used mostly for solo projects or small teams and may not be ready for large orgs.