while loop question

[buran]

just to mention that using while in this case/this way is how to say ... unusual

if you have to use while loop, although not recommended

my_list = [-3, 4, 6, 7, -10, -3, 8, -4]
total = 0
j = 0
while j < len(my_list):
    if my_list[j] < 0:
        total += my_list[j]
    j += 1
print(total)

two more pythonic ways, there are also others:

my_list = [-3, 4, 6, 7, -10, -3, 8, -4]
total = 0
for number in my_list:
    if number < 0:
        total += number
print(total)

my_list = [-3, 4, 6, 7, -10, -3, 8, -4]
print(sum(number for number in my_list if number < 0))