How to get children of level n MPTTModel in django?

Question

Django

I am building a tree in django, connected mptt. The task is as follows: get all children at level n of their subtree (grandchildren-great-grandchildren). get_children().all(), as I understand it, returns children of the first level. We also need grandparents. I use self.parent.parent.parent... but I suspect there is a more concise way to achieve the result. We need instances / arrays of instances of the TreeNode class

class TreeNode(MPTTModel):
    parent = TreeForeignKey('self', null=True, blank=True, related_name='child')
    ...

Answer 1

Select among children
Select among parents
node.get_ancestors().filter(level=n)