Thanks very much - your description of our workflow is really good (and is pretty close to exactly what we have!) I don't understand what dependencies everyone

Thanks very much - your description of our workflow is really good (and is pretty close to exactly what we have!) I don't understand what dependencies everyone keeps talking about (which seems to be a big deal with Poetry) - when you run: pip freeze It captures every single python module, dependencies as well. Because everything in the dependencies file is listed as: aaaaaaa==xy.z You are guaranteed to have the exact same version. We have all sorts of turf wars when someone wants to roll forward the version of a module, and, in the case of the big ones (Pandas) we sometimes hold off for 6-9 months before rolling it forward. But there is something that Poetry is doing that is better than "pip freeze" - I think once I figure that out, I'll have an "aha" moment and start evangelizing it. I just haven't got there yet.