Python面向对象方法写一个学生管理系统

好的，下面是一个简单的学生管理系统的Python面向对象实现：

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

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

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

    def remove_student(self, student):
        self.students.remove(student)

    def get_all_students(self):
        return self.students

    def get_student(self, name):
        for student in self.students:
            if student.name == name:
                return student

        return None

if __name__ == '__main__':
    manager = StudentManager()

    while True:
        print("1. Add student")
        print("2. Remove student")
        print("3. Get all students")
        print("4. Get student by name")
        print("5. Quit")

        choice = input("Enter choice: ")

        if choice == '1':
            name = input("Enter name: ")
            age = int(input("Enter age: "))
            score = int(input("Enter score: "))
            student = Student(name, age, score)
            manager.add_student(student)
        elif choice == '2':
            name = input("Enter name: ")
            student = manager.get_student(name)

            if student:
                manager.remove_student(student)
            else:
                print("Student not found")
        elif choice == '3':
            students = manager.get_all_students()

            for student in students:
                print(student.name, student.age, student.score)
        elif choice == '4':
            name = input("Enter name: ")
            student = manager.get_student(name)

            if student:
                print(student.name, student.age, student.score)
            else:
                print("Student not found")
        elif choice == '5':
            break
        else:
            print("Invalid choice")

这个程序包含了两个类，`Student` 和 `StudentManager`。`Student` 类表示一个学生，`StudentManager` 类表示学生管理系统。这个程序允许用户添加、删除、获取所有学生和获取指定学生的信息。