Sum item in list

Question

How do I sum up items of a list using a For loop
E.g my_num = [1, 2, 3, 5, 2, 5]

Answer 1

my_list = [1, 3, 4, 7]
sum=0
for x in my_list:
sum+=x
print(sum)

OR

my_list = [1, 3, 4, 7]
print(sum(my_list))