Saving several NN into an octree file

My main problem is to save several NN into a octree structure. I have created a octree, with a very simple definition :

class Tree(object):
    def __init__(self):
        self.childs = []
        self.model = None
        self.depth = None
        self.minRightValue = torch.ones(3)
        self.maxLeftValue = torch.ones(3)
    def createChildren(self,amount):
        for i in range(0,amount):

Where tree.model is a trained Neural network.

This definition works quite well. However, what I want to do is to save the octree into one file where each child have is a trained NN.

The only idea I have for now is to save each NN with a complex naming convention to read each of them and create the octree in another computer. But I think there should be easier way to do it.

Any ideas? This is my first time using octrees, so if there is any recommendation I would love one.

Thank you!