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

For those coming from Google:

%reset

This is useful when you want to reset all variables after a certain point in the notebook. It is going to ask if you are sure that you want to reset. If you want to force reset without asking, then use:

%reset -f