如何在Python中实例化一个给定父类的类？

class ParentClass:
    def __init__(self, name):
        self.name = name

    def say_hello(self):
        print("Hello, I am", self.name)


class ChildClass(ParentClass):
    def __init__(self, name, age):
        super().__init__(name)
        self.age = age

    def say_age(self):
        print("I am", self.age, "years old")


# 实例化一个ChildClass对象
child = ChildClass("Alice", 10)
child.say_hello()  # 输出：Hello, I am Alice
child.say_age()  # 输出：I am 10 years old