找出这个生成的深拷贝钩子中两处与 memo 有关的错误。
Python
import copy
class Node:
def __init__(self, name):
self.name = name
self.children = []
def __deepcopy__(self, memo):
clone = type(self)(self.name)
clone.children = [copy.deepcopy(child) for child in self.children]
return clone