在Python中覆盖嵌套类成员的更好方法是什么？

class Parent:
    def __init__(self, name, child):
        self.name = name
        self.child = child

class Child:
    def __init__(self, name, age):
        self.name = name
        self.age = age

def create_child(name, age, **kwargs):
    child = Child(name, age)
    child.name = kwargs.get("name", child.name)
    child.age = kwargs.get("age", child.age)
    return child

child = create_child("Alice", 3, name="Bob", age=4)
print(child.name, child.age)