How to use _delete_subnets method in tempest

Best Python code snippet using tempest_python

IPtree.py

Source:IPtree.py

...89    return [IP(i[0]) for i in db_result]90def remove_subnets_with_prefixlength(tree, prefixlen):91    """Generates a new tree from tree, but without subnets with92    prefix length >= prefixlen."""93    def _delete_subnets(tree, limit):94        old_tree = deepcopy(tree)95        for ip in old_tree.keys():96            if ip.prefixlen() >= limit:97                del tree[ip]98        for ip in tree.keys():99            _delete_subnets(tree[ip], limit)100    tree_nets = deepcopy(tree)101    _delete_subnets(tree_nets, prefixlen)102    return tree_nets103def get_subtree(tree, ip):104    """Returns the subtree identified by the arguments ``ip''.105    None if not found."""106    def search_tree(tree, goal):107        """DFS in tree for goal."""108        for node in tree.keys():109            if node == goal:110                return tree[node]111            else:112                result = search_tree(tree[node], goal)113                if result is not None:114                    return result115    return search_tree(tree, ip)...

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