How do I reset the Jupyter/IPython input prompt numbering?

Question

I just wrote my first extensive Python tutorial using IPython notebooks. All went well, except I did a lot of testing and moving blocks around. How do I reset the In [

Answer 1

'Kernel' -> 'Restart & Run All'

Just make sure you saved your Notebook. You can also bind/assign keyboard key for running this command.

'Help' -> 'Edit Keyboard Shortcuts'