编写一个简单的学生信息管理程序及菜单系统。 工定义学生类和管理员类。以学生类为基础，派生出本科生类和研究生类。学生包括学号、 姓名、性别、年龄、专业、班级、成绩等成员：研究生还包括导师等信息，本科生还包括学制 （4年或3年）等信息。

好的，我可以帮你编写一个简单的学生信息管理程序及菜单系统。首先需要定义学生类和管理员类，代码如下：

class Student:
    def __init__(self, id, name, gender, age, major, clazz, score):
        self.id = id
        self.name = name
        self.gender = gender
        self.age = age
        self.major = major
        self.clazz = clazz
        self.score = score

class Undergraduate(Student):
    def __init__(self, id, name, gender, age, major, clazz, score, year):
        super().__init__(id, name, gender, age, major, clazz, score)
        self.year = year

class Graduate(Student):
    def __init__(self, id, name, gender, age, major, clazz, score, advisor):
        super().__init__(id, name, gender, age, major, clazz, score)
        self.advisor = advisor

class Admin:
    def __init__(self, username, password):
        self.username = username
        self.password = password

接下来，我们可以定义一些方法来实现学生信息的增删改查功能，代码如下：

class StudentManager:
    def __init__(self):
        self.students = []

    def add_student(self, student):
        self.students.append(student)

    def remove_student(self, id):
        for student in self.students:
            if student.id == id:
                self.students.remove(student)
                return True
        return False

    def update_student(self, id, name, gender, age, major, clazz, score, year=None, advisor=None):
        for student in self.students:
            if student.id == id:
                student.name = name
                student.gender = gender
                student.age = age
                student.major = major
                student.clazz = clazz
                student.score = score
                if isinstance(student, Undergraduate):
                    student.year = year
                elif isinstance(student, Graduate):
                    student.advisor = advisor
                return True
        return False

    def get_student(self, id):
        for student in self.students:
            if student.id == id:
                return student
        return None

    def get_all_students(self):
        return self.students

最后，我们可以编写一个菜单系统来实现用户与程序的交互，代码如下：

def main():
    student_manager = StudentManager()
    admin = Admin('admin', '123456')

    while True:
        print('欢迎使用学生信息管理系统')
        username = input('请输入管理员用户名：')
        password = input('请输入管理员密码：')
        if username == admin.username and password == admin.password:
            print('登录成功！')
            break
        else:
            print('用户名或密码错误，请重新输入！')

    while True:
        print('请选择操作：')
        print('1. 添加学生')
        print('2. 删除学生')
        print('3. 修改学生信息')
        print('4. 查询学生信息')
        print('5. 显示所有学生信息')
        print('0. 退出系统')

        choice = input('请输入操作编号：')
        if choice == '1':
            id = input('请输入学生学号：')
            name = input('请输入学生姓名：')
            gender = input('请输入学生性别：')
            age = input('请输入学生年龄：')
            major = input('请输入学生专业：')
            clazz = input('请输入学生班级：')
            score = input('请输入学生成绩：')
            category = input('请输入学生类别（1：本科生，2：研究生）：')
            if category == '1':
                year = input('请输入学制（4年或3年）：')
                student = Undergraduate(id, name, gender, age, major, clazz, score, year)
            elif category == '2':
                advisor = input('请输入导师姓名：')
                student = Graduate(id, name, gender, age, major, clazz, score, advisor)
            student_manager.add_student(student)
            print('添加成功！')

        elif choice == '2':
            id = input('请输入学生学号：')
            if student_manager.remove_student(id):
                print('删除成功！')
            else:
                print('学生不存在！')

        elif choice == '3':
            id = input('请输入学生学号：')
            name = input('请输入学生姓名：')
            gender = input('请输入学生性别：')
            age = input('请输入学生年龄：')
            major = input('请输入学生专业：')
            clazz = input('请输入学生班级：')
            score = input('请输入学生成绩：')
            student = student_manager.get_student(id)
            if isinstance(student, Undergraduate):
                year = input('请输入学制（4年或3年）：')
                student_manager.update_student(id, name, gender, age, major, clazz, score, year=year)
            elif isinstance(student, Graduate):
                advisor = input('请输入导师姓名：')
                student_manager.update_student(id, name, gender, age, major, clazz, score, advisor=advisor)
            else:
                student_manager.update_student(id, name, gender, age, major, clazz, score)
            print('修改成功！')

        elif choice == '4':
            id = input('请输入学生学号：')
            student = student_manager.get_student(id)
            if student is not None:
                print('学号：', student.id)
                print('姓名：', student.name)
                print('性别：', student.gender)
                print('年龄：', student.age)
                print('专业：', student.major)
                print('班级：', student.clazz)
                print('成绩：', student.score)
                if isinstance(student, Undergraduate):
                    print('学制：', student.year)
                elif isinstance(student, Graduate):
                    print('导师：', student.advisor)
            else:
                print('学生不存在！')

        elif choice == '5':
            students = student_manager.get_all_students()
            if len(students) > 0:
                for student in students:
                    print('学号：', student.id)
                    print('姓名：', student.name)
                    print('性别：', student.gender)
                    print('年龄：', student.age)
                    print('专业：', student.major)
                    print('班级：', student.clazz)
                    print('成绩：', student.score)
                    if isinstance(student, Undergraduate):
                        print('学制：', student.year)
                    elif isinstance(student, Graduate):
                        print('导师：', student.advisor)
            else:
                print('没有学生信息！')

        elif choice == '0':
            print('谢谢使用！')
            break

        else:
            print('输入有误，请重新输入！')


if __name__ == '__main__':
    main()

这样，我们就完成了一个简单的学生信息管理程序及菜单系统。用户可以通过不同的操作来实现对学生信息的增删改查功能。