objectBase.py

class ObjectBase:
    def __init__(self, id_=None, parent_object=None):
        self.id = id_
        # Parent object initialization
        self.parent_object = parent_object
        if self.parent_object is not None:
            self.parent_object.assign_child_object(self)
        # Child objects initialization
        self.child_objects = []

    def assign_child_object(self, child_object):
        self.child_objects.append(child_object)

    def assing_parent_object(self, parent_object):
        self.parent_object = parent_object

    def get_child_objects(self):
        return self.child_objects

    def get_current_time(self):
        return self.parent_object.get_current_time()

    def get_intersection(self):
        intersection = self
        parent_object = self.get_parent_object()
        while parent_object is not None:
            intersection = parent_object
            parent_object = parent_object.get_parent_object()
        return intersection

    def get_parent_object(self):
        return self.parent_object