Closed
Description
Problem
Today at the Jupyter Server meeting we talked about notebook restoration, where RTC could be a solution (see jupyter-server/jupyter_server#900). In that solution, the frontend just displays live changes to the notebook shared model. But currently, a notebook cell execution is either None
or an integer greater than 0, so there is no way to show that a cell is executing.
Proposed Solution
We could encode the "cell executing" state in the execution count, for instance as "*"
. I think it could even be part of nbformat, because it brings some information about the state of the notebook at the time it was saved.