Help, Assignment 1 - Problem 2 - Q7

Help, i’m stuck with this problem. I don’t know what is wrong with this AttributeError.

Did you declare, 'my_list' with [] square brackets or () round brackets.

To declare a list, you need to use [] square brackets, which will store your values, and later you can append any value in it with my_list.append(3)
i.e. like you did.

But in a tuple, declared with () round brackets, you can’t append as tuples are immutable.

thank you for your help