How to Run a Cell in Jupyter Notebook Only If a Value Is Null?

Wow, thanks for all the suggestions, everyone! I tried the `sys.exit()` method, and it worked perfectly for skipping the cell when the value isn’t null.

I also checked out Papermill, and it looks super useful for automating my workflows. Definitely gonna dive deeper into that.

One quick follow-up: has anyone used `nbclient` for larger projects? I’m curious if it handles dependencies between cells well.

Thanks again, y’all are awesome!