[FIXED] Jupyter Notebook didn't save for over a day. How can I recover lost work?

Issue

I've lost a day's work in Jupyter Notebook because it didn't autosave. As I was working, I would click on File > Save and Checkpoint to be safe. I closed the notebook when I finished working and when I tried reopening it, I see that essentially all my work is gone and it says Last Checkpoint: a day ago (autosaved) next to the filename. I now realize that I had been working for a long time on the notebook with an orange box with some kind of error message. I'm sorry that I can't remember the specific message right now, but I think it was something involving POS or POST or POSIT ...?. I saw Trusted next to the error message, so I must've thought things were OK.

I tried opening the filename-checkpoint.ipynb file within the .ipynb_checkpoints folder but it's blank. I looked up a possible solution on Recovering from a Jupyter Disaster, but it requires SQL, which I don't know. Is there any hope for recovering my work? I realize that this is probably a rookie mistake, but I'm pretty new at this.

Thanks

PS: I'm running Python3 on MacOS

Solution

Hope you've already found how to recover lost work from Jupyter notebook work. If not, try the following:

• Go to Anaconda Navigator (the green circle!)
• Launch a Jupyter Lab
• In Jupyter Lab, open a Terminal window
• Launch iPython in the terminal by typing ipython and hitting enter
• Hit Up arrow
• All your codes are stored in history and each cell compilation that you would've done in the past shows up there.
• Copy+Paste it back to a new Jupyter notebook and you are ready to go again!

Answered By - user3792245