创建一个 Person 类(父类)，通过扩展创建 Student 和 Teacher 类(子类);并在主类 TestOne 里实现创建对象，成员变量的初始化、 方法调用等;

class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age
    
    def introduce(self):
        print("My name is {} and I'm {} years old.".format(self.name, self.age))

class Student(Person):
    def __init__(self, name, age, student_id):
        super().__init__(name, age)
        self.student_id = student_id

    def introduce(self):
        super().introduce()
        print("I am a student with ID: {}.".format(self.student_id))

class Teacher(Person):
    def __init__(self, name, age, subject):
        super().__init__(name, age)
        self.subject = subject

    def introduce(self):
        super().introduce()
        print("I am a teacher of {}.".format(self.subject))

# TestOne
student = Student("Tom", 18, "12345")
teacher = Teacher("John", 35, "Mathematics")

student.introduce()
teacher.introduce()

输出结果：

My name is Tom and I'm 18 years old.
I am a student with ID: 12345.
My name is John and I'm 35 years old.
I am a teacher of Mathematics.