(I just got it by googling “pickle an object in jupyter,” so sorry if this is something obvious that you’ve already seen and doesn’t quite solve your problem).
Yeah it got my hopes up when I found it. But when I was testing it, I didn't find the data actually made it into the .ipynb. It turns out that's actually a global storage in your home directory and doesn't go into the notebook at all. So different notebooks each overwrite the value if they use the same variable name.
https://stackoverflow.com/questions/34342155/how-to-pickle-o...
(I just got it by googling “pickle an object in jupyter,” so sorry if this is something obvious that you’ve already seen and doesn’t quite solve your problem).