Why it is showing "none", what's wrong with it

Question

https://code.sololearn.com/cKUo3ueu218H/?ref=app

Answer 1

Hope it’s clear enough

https://code.sololearn.com/cCGwMbMDYUIP/?ref=app

Answer 2

The main problem is just that you forgot to include the colons after the declaration of each function, so adding them in allows the program to run correctly.

Answer 3

Thank you