设计一个老师类的Teacher，描述老师的信息（年龄，姓名）职责（教学） 设计一个学生类的Student，描述学生的信息（姓名，年龄）和职责（学习）

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

def teach(self):
print(f"{self.name} is teaching the class.")

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

def study(self):
print(f"{self.name} is studying for the exam.")