Check out our reproducibility focused notebook Vizier (https://vizierdb.info https://vizierdb.info). In Vizier, inter-cell communication happens through spark

Check out our reproducibility focused notebook Vizier (https://vizierdb.info https://vizierdb.info). In Vizier, inter-cell communication happens through spark dataframes (and we're working on other datatypes too. This makes it possible for Vizier to track inter-cell dependencies and automatically reschedules execution of dependent cells. (It also makes Vizier a polyglot notebook :) )