lst = [0,0,1,0,0,2,3,0]

ikkeFerdig = True
while ikkeFerdig:
    if lst[0] == 0:
        lst.pop(0)
    if lst[len(lst)-1] == 0:
        lst.pop(len(lst)-1)
    
    if lst[0] != 0 and lst[len(lst)-1] != 0:
        ikkeFerdig = False

print(lst)