如何获取基于深度嵌套子文档的父代ids？

def get_parent_ids(doc, parent_ids=[]):
    parent_ids.append(doc['id'])  # 将当前文档的id添加到父代ids列表中

    if 'children' in doc:
        for child in doc['children']:
            get_parent_ids(child, parent_ids)  # 递归遍历子文档

    return parent_ids

# 示例数据
document = {
    'id': 1,
    'children': [
        {
            'id': 2,
            'children': [
                {'id': 3},
                {'id': 4},
            ]
        },
        {
            'id': 5,
            'children': [
                {'id': 6},
                {'id': 7},
            ]
        }
    ]
}

parent_ids = get_parent_ids(document)
print(parent_ids)