如何从其他数组中获取多维数组

def get_multi_dimensional_array(arr):
    result = []  # 创建空的多维数组

    for item in arr:
        if isinstance(item, list):  # 判断是否为数组类型
            result.append(get_multi_dimensional_array(item))  # 递归获取内部的多维数组
        else:
            result.append(item)  # 添加一维数组到多维数组中

    return result

# 示例用法
arr1 = [1, 2, [3, 4, [5, 6]], 7]
arr2 = [8, [9, [10, 11]], 12]
arr3 = [arr1, arr2]

multi_dimensional_array = get_multi_dimensional_array(arr3)
print(multi_dimensional_array)