[SOLVED] Why the last print() function returns a None value? -Python

Question

I was trying to challenge myself with the Collatz Conjecture challenge but I don't understand why when I call the function in the code it returns None instead of the list I have set. Any help? https://code.sololearn.com/cP5I87Wl4ymB/?ref=app

Answer 1

Hey @Biraj thanks a lot!