HI
the 3.02 solution it’s not related on 3.02 exercise?!
Hi @VIORELBALAN
I don’t know why but it seems that this exercise did not automatically synchronize with the most recent version.
To fetch the most recent version by hand you will have to click on the “File” menu of the jupyter notebook and the select “Reset to original”.
Please let me know if this works for you.
That works, but doing the wrong exercise was a waste of time !? … anyway an additional exercise 
That works, but doing the wrong exercise was a waste of time !? … anyway an additional exercise
I like the latter vision the best 