i did this

since his sum is already declared 0, it will return 0 if list is empty.

Since sum is declared as 0, in case of an empty list it returns 0. Or am i mistaken?

This is what I think the author was looking for, though you might be missing the part about returning 0 if the list is empty.

Thank you so much for the great explanation.

Yep! In Python, there's a way to collapse logic that involves doing actions for every element in a list called "list comprehension". You can see docs online by searching that term or referring to the following example doc: https://www.w3schools.com/python/python_lists_comprehension.asp

Hi, great solution. Sorry to ask, You have used a compound statement right?
I want to learn about this :-)