python判断对象是否为嵌套数组

可以使用isinstance()函数来判断一个对象是否为嵌套数组，示例代码如下：

lst = [1, [2, 3], 4]
if isinstance(lst, list) and any(isinstance(elem, list) for elem in lst):
    print("lst is a nested list")
else:
    print("lst is not a nested list")

输出结果为"lst is a nested list"，因为lst包含一个嵌套数组[2, 3]。