python-设计高校人员信息包，并完成测试
【题目描述】定义一个人员类People，其属性有：姓名、性别、年龄；基于People实现学生类Student，添加属性：学号、入学时间和入学成绩；基于People实现教师类Teacher，添加属性：职务、部门、工作时间；基于Student实现究生类Graduate，添加属性：研究方向和导师，分别定义其中的构造函数和输出函数。程序中定义各种类的对象，并完成测试。 基于以上类利用接口实现在职研究生类 GradOnWork。
【源代码程序】
class People:
def __init__(self, name='Yuan', gender='女', age=20):
self.name = name
self.gender = gender
self.age = age
def display(self):
print("姓名：" + self.name + "\n性别：" + self.gender + "\n年龄：" + str(self.age))
class Student(People):
def __init__(self, name='Yuan', gender='女', age=20, student_id="20223794", into_time="2019-09-01",
into_score="100.0"):
super().__init__(name, gender, age)
self.student_id = student_id
self.into_time = into_time
self.into_score = into_score
def display(self):
super().display()
print("学号：" + self.student_id + "\n入学时间：" + self.into_time + "\n入学成绩：" + str(self.into_score))
class Teacher(People):
def __init__(self, name='Yuan', gender='女', age=20, post="院长", department="软件工程学院",
job_time="2008-12-03"):
super().__init__(name, gender, age)
self.post = post
self.department = department
self.job_time = job_time
def display(self):
super().display()
print("职务：" + self.post + "\n部门：" + self.department + "\n工作时间：" + self.job_time)
class Graduate(Student):
def __init__(self, name='Yuan', gender='女', age=20, student_id="20193250", into_time="2019-09-01",
into_score="100.0", research_fields="软件工程", teacher="Mr.Liu"):
super().__init__(name, gender, age, student_id, into_time, into_score)
self.research_fields = research_fields
self.teacher = teacher
def display(self):
super().display()
print("研究方向：" + self.research_fields + "\n导师：" + self.teacher)
class GradOnWork:
def __init__(self, teacher, graduate):
self.teacher = teacher
self.graduate = graduate
def display(self):
self.teacher.display()
print("----")
self.graduate.display()
# Testing
if __name__ == "__main__":
# Creating objects
person1 = People("yuan", "女", 20)
student1 = Student("1", "男", 22, "20210001", "2021-09-01", 95)
teacher1 = Teacher("2", "男", 40, "教授", "软件工程", "2010-03-15")
graduate1 = Graduate("3", "男", 28, "20180001", "2018-09-01", 88, "人工智能", "Dr. Liu")
# Displaying information
print("=== Person Information ===")
person1.display()
print("\n=== Student Information ===")
student1.display()
print("\n=== Teacher Information ===")
teacher1.display()
print("\n=== Graduate Information ===")
graduate1.display()
# Testing GradOnWork
print("\n=== GradOnWork Information ===")
grad_on_work = GradOnWork(teacher1, graduate1)
grad_on_work.display()
【运行测试】
