Why it appends 2 diferent values of the same variable?

Instead of getting "1,2,3,4,5" in my list i am getting "1,1,2,1,3,1,4,1,5"

Why does it append it that way?!

I have tried changing the ("if" and "elif") to "while" put it still have the bug Here is the code:

c_streak = 1

if len(a_1_list) > 1:
        while a_1_list[-1] != [-2]:
            streak = 1
            if a_1_list[-1] > 0:
                p_streaks_list.append(streak)
            else: n_streaks_list.append(streak)
            break

# This part has the bug
        while a_1_list[-1] == a_1_list[-2]:
            c_streak += 1
            if a_1_list[-1] > 0:
                p_streaks_list.append(c_streak)
            elif a_1_list[-1] < 0:
                n_streaks_list.append(c_streak)
            break
# This part has the bug

Instead of getting "1,2,3,4,5" in my list i am getting "1,1,2,1,3,1,4,1,5" Why does it append it that way?! It looks like every new value its attached to a one