Breaking While Loop

[perfringo]

If I understand correctly it can be done with for-loop:

lst = [0, -2, -5, 6, 8]

def my_func(num):
    return num

for item in lst:
    x = my_func(item)
    if x > 0:
        break

Of course one can have onliner fun as well:

next((item for item in lst if my_func(item) > 0))