I use Jupyter notebook. I accidentally deleted a cell, and I can't go step back.
How can I recover the notebook cell?
If you go to "Edit", there's an option for "Undo Delete Cells".
In MacOS
If you are familiar with shortcuts, you can do cmd + shift + p and then type in undo
to recover as well. No need to moving your mouse around.
In Windows
First, switch to command mode by pressing ESC, then you can press Z to recover the deleted cells. (Thanks to @nik7 who proposed this answer)