2-Regression/1-Tools/notebook.ipynb is an empty file

[devDavide]

Hi there,at first thank you for this amazing course.
I was following the lectures and I saw that 2-Regression/1-Tools/notebook.ipynb is an empty file and it does not contain what explained in the documentation.
Could you please add the mentioned notebook to the folder ?

Many thanks

[my-run]

Follow the tutorials and code by yourself as a playground.