Handling numbers in lists (Python)

Question

I'm starting to learn how to code and I've been trying to work out how to sum numbers from a list.

list1 = [1,2,3,4,5]

Using a for-loop, how would I set a variable to the sum of the list (15)?

Answer 1

Using a for loop:

acc = 0
for num in list1:
    acc += num

Another approach:

acc = sum(list1)