使用Python设计一个学生管理系统

好的，以下是一个简单的学生管理系统的Python代码：

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

    def modify_student(self, name, age, score):
        for student in self.students:
            if student.name == name:
                student.age = age
                student.score = score
                return True
        return False

    def search_student(self, name):
        for student in self.students:
            if student.name == name:
                return student
        return None

    def show_all_students(self):
        for student in self.students:
            print("姓名：{}，年龄：{}，成绩：{}".format(student.name, student.age, student.score))

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

    while True:
        print("1. 添加学生")
        print("2. 删除学生")
        print("3. 修改学生")
        print("4. 查找学生")
        print("5. 显示所有学生")
        print("0. 退出程序")

        choice = input("请输入您的选择：")

        if choice == "1":
            name = input("请输入学生姓名：")
            age = input("请输入学生年龄：")
            score = input("请输入学生成绩：")
            student = Student(name, age, score)
            manager.add_student(student)
            print("添加成功！")

        elif choice == "2":
            name = input("请输入要删除的学生姓名：")
            if manager.remove_student(name):
                print("删除成功！")
            else:
                print("该学生不存在！")

        elif choice == "3":
            name = input("请输入要修改的学生姓名：")
            age = input("请输入修改后的学生年龄：")
            score = input("请输入修改后的学生成绩：")
            if manager.modify_student(name, age, score):
                print("修改成功！")
            else:
                print("该学生不存在！")

        elif choice == "4":
            name = input("请输入要查找的学生姓名：")
            student = manager.search_student(name)
            if student:
                print("姓名：{}，年龄：{}，成绩：{}".format(student.name, student.age, student.score))
            else:
                print("该学生不存在！")

        elif choice == "5":
            manager.show_all_students()

        elif choice == "0":
            break

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

这个学生管理系统可以添加、删除、修改、查找和显示所有学生信息。你可以根据自己的需求进行修改和扩展。