练习1

'''有一个列表[3,4,1,2,5,6,6,5,4,3,3]请写出一个函数，找出该列表中没有重复的数的总和'''
def func(l):
    res = []
    sum_s = 0
    for i in l:
        if i not in res:
            res.append(i)
            sum_s += i

    return sum_s


list1 = [3, 4, 1, 2, 5, 6, 6, 5, 4, 3, 3]

print(func(list1))  # 21