Install with:
pip install --upgrade git+https://github.com/innovationOUtside/nb_cell_shell.git
Call it by:
%load_ext cell_shell
A really simple piece of magic that hacks the IPython input transformation (docs) to rewrite the contents of a cell that is not prefixed in the first line by a % so that the first line is a Python block cell magic: %%python
This has the effect of executing the code in each code cell in its own Python shell.
So no hidden state. In face, no state outside the cell. Like running a py file.
I bet you that folk will still complain though. "Oh, it doesn't have state. It's really rubbish and not a REPL at all..."