如何获取n维嵌套列表中元素的索引

def find_index(lst, target):
    index = []
    for i, val in enumerate(lst):
        if val == target:
            index.append(i)
        elif isinstance(val, list):
            sub_index = find_index(val, target)
            if sub_index:
                index.append([i] + sub_index)
    return index

nested_list = [1, [2, 3], [4, [5, 6, [7, 8]]]]
target = 5
result = find_index(nested_list, target)
print(result)