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35 changes: 32 additions & 3 deletions nodes/manager.py
Original file line number Diff line number Diff line change
@@ -1,5 +1,34 @@
# Create here the NodeManager Class

from nodes.node import Node
from typing import List

class NodeManager:
pass
nodes: List[Node]

def __init__(self, nodes: List[Node]):
if not isinstance(nodes, list):
raise ValueError("nodes must be a List of Nodes")

self.nodes = nodes.copy()

def __len__(self):
return len(self.nodes)

def __getitem__(self, index):
return self.nodes[index]

def remove(self, node: Node):
if node not in self.nodes:
raise ValueError("Node is not in the list of nodes")

self.nodes.remove(node)

def remove_cascade(self, node: Node):
if node not in self.nodes:
raise ValueError("Node is not in the list of nodes")

children = [n for n in self.nodes if n.parent == node.id]

for child in children:
self.remove_cascade(child)

self.nodes.remove(node)
18 changes: 15 additions & 3 deletions nodes/node.py
Original file line number Diff line number Diff line change
@@ -1,5 +1,17 @@
# Create here the Node Class
class Node:
id: int
parent: int

def __init__(self, id: int, parent: int):
if not isinstance(id, int) or not isinstance(parent, int):
raise ValueError("ID and Parent must be integers")
if parent > id:
raise ValueError("Parent must not be greater than ID")
if parent == id:
raise ValueError("Parent and ID must not be equal")

self.id = id
self.parent = parent

class Node:
pass
def __repr__(self):
return f"Node({self.id}, {self.parent})"