@register.filter
def is_equal_or_parent_of(page1, page2):
    try:
        return page1.tree_id == page2.tree_id and page1.lft <= page2.lft and page1.rght >= page2.rght
    except __HOLE__:
        return False

# ------------------------------------------------------------------------
dataset/ETHPy150Open django-leonardo/django-leonardo/leonardo/module/nav/templatetags/webcms_nav_tags.py/is_equal_or_parent_of