[execution_dependencies] conditional execution [feature request]

ipython-contrib / jupyter_contrib_nbextensions

A collection of various notebook extensions for Jupyter

http://jupyter-contrib-nbextensions.readthedocs.io/en/latest

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[execution_dependencies] conditional execution [feature request] #1395

Open casperdcl opened 5 years ago

casperdcl commented 5 years ago

related to #1193 -> #1213

add options to only execute dependents:

[ ] once per kernel execution
[ ] if modified since they were last executed

Alexis-Prel commented 5 years ago

Hi, just a comment : I believe this is a great idea but should be on a cell-by-cell basis (for example by applying a lazy tag on it). Consider the following examples:

a += 1

import time
t = time.time()

The user might or might not want to re-run these every time regardless of the cell modification status.