写Python代码：设计一套学生成绩管理系统(学生人数至少为10人)，要求满足以下要求: (一)程序运行后，需要显示系统主菜单: -主菜单--- 录入学生信息 1- 2、 查找学生信息 3、 删除学生信息 4、 修改学生信息 学生成绩统计 5- 6、 退出系统 (二)按照主菜单内容，对学生成绩进行相关操作并给出对应显示，这里给出示例: 请选择功能:1请输入学生学号:请输入学生姓名: 请输入学生高数成绩:请输入学生英语成绩:请输入学生Python成绩:请输入学生C语言成绩:请输入学生机器学习成绩: 录入完毕?[Y\N]:(输入Y，则询问下一个选择的功能:输入 N，则开始输入下一个学生的信息和成绩。) 在功能2下，则可以根据学生姓名或者是学生学号查找学生信息，并将其所有成绩进行输出显示; 在功能3下，对个别同学的信息进行删除; 在功能4下，可以对所有同学的信息和成绩进行任意修改;在功能5下，需要进行: a) 计算每个学生所有课程的总成绩和平均分， b) 每一门课程中所有学生的平均分 c) 可以选择根据单门课程成绩对学生进行排序，还可 以根据学生5门课程总成绩和平均分进行排序，并对排序结果进行显示。 d)将所有汇总信息保存到一个.csv文件

以下是学生成绩管理系统的Python代码：

import csv

class Student:
    def __init__(self, student_id, name, math_score, english_score, python_score, c_score, machine_learning_score):
        self.student_id = student_id
        self.name = name
        self.math_score = math_score
        self.english_score = english_score
        self.python_score = python_score
        self.c_score = c_score
        self.machine_learning_score = machine_learning_score

class GradeManagementSystem:
    def __init__(self):
        self.students = []
    
    def display_menu(self):
        print("-----主菜单-----")
        print("1、录入学生信息")
        print("2、查找学生信息")
        print("3、删除学生信息")
        print("4、修改学生信息")
        print("5、学生成绩统计")
        print("6、退出系统")

    def add_student(self):
        while True:
            student_id = input("请输入学生学号:")
            name = input("请输入学生姓名:")
            math_score = int(input("请输入学生高数成绩:"))
            english_score = int(input("请输入学生英语成绩:"))
            python_score = int(input("请输入学生Python成绩:"))
            c_score = int(input("请输入学生C语言成绩:"))
            machine_learning_score = int(input("请输入学生机器学习成绩:"))
            student = Student(student_id, name, math_score, english_score, python_score, c_score, machine_learning_score)
            self.students.append(student)
            is_continue = input("录入完毕?[Y\N]:")
            if is_continue.lower() == "n":
                continue
            else:
                break
    
    def search_student(self):
        search_type = input("请选择查找方式(1、学号查找 2、姓名查找):")
        if search_type == "1":
            student_id = input("请输入学生学号:")
            for student in self.students:
                if student.student_id == student_id:
                    self.display_student(student)
                    break
        elif search_type == "2":
            name = input("请输入学生姓名:")
            for student in self.students:
                if student.name == name:
                    self.display_student(student)
                    break
        else:
            print("输入有误，请重新选择")

    def delete_student(self):
        student_id = input("请输入要删除的学生学号:")
        for index, student in enumerate(self.students):
            if student.student_id == student_id:
                del self.students[index]
                print("删除成功")
                break
    
    def modify_student(self):
        student_id = input("请输入要修改的学生学号:")
        for student in self.students:
            if student.student_id == student_id:
                student.name = input("请输入学生姓名:")
                student.math_score = int(input("请输入学生高数成绩:"))
                student.english_score = int(input("请输入学生英语成绩:"))
                student.python_score = int(input("请输入学生Python成绩:"))
                student.c_score = int(input("请输入学生C语言成绩:"))
                student.machine_learning_score = int(input("请输入学生机器学习成绩:"))
                print("修改成功")
                break
    
    def calculate_scores(self):
        math_scores = []
        english_scores = []
        python_scores = []
        c_scores = []
        machine_learning_scores = []
        total_scores = []
        for student in self.students:
            math_scores.append(student.math_score)
            english_scores.append(student.english_score)
            python_scores.append(student.python_score)
            c_scores.append(student.c_score)
            machine_learning_scores.append(student.machine_learning_score)
            total_score = student.math_score + student.english_score + student.python_score + student.c_score + student.machine_learning_score
            total_scores.append(total_score)
            avg_score = total_score / 5
            student.total_score = total_score
            student.avg_score = avg_score

        math_avg_score = sum(math_scores) / len(math_scores)
        english_avg_score = sum(english_scores) / len(english_scores)
        python_avg_score = sum(python_scores) / len(python_scores)
        c_avg_score = sum(c_scores) / len(c_scores)
        machine_learning_avg_score = sum(machine_learning_scores) / len(machine_learning_scores)

        while True:
            print("请选择统计方式:")
            print("1、计算每个学生所有课程的总成绩和平均分")
            print("2、每一门课程中所有学生的平均分")
            print("3、根据单门课程成绩对学生进行排序")
            print("4、根据学生5门课程总成绩和平均分进行排序")
            print("5、返回主菜单")
            choice = input("请输入选项:")
            if choice == "1":
                for student in self.students:
                    self.display_student(student)
                    print("总成绩:{}, 平均分:{}".format(student.total_score, student.avg_score))
            elif choice == "2":
                print("高数平均分:{}, 英语平均分:{}, Python平均分:{}, C语言平均分:{}, 机器学习平均分:{}"
                      .format(math_avg_score, english_avg_score, python_avg_score, c_avg_score, machine_learning_avg_score))
            elif choice == "3":
                subject = input("请输入要排序的科目(1、高数 2、英语 3、Python 4、C语言 5、机器学习):")
                if subject == "1":
                    self.students.sort(key=lambda x: x.math_score, reverse=True)
                elif subject == "2":
                    self.students.sort(key=lambda x: x.english_score, reverse=True)
                elif subject == "3":
                    self.students.sort(key=lambda x: x.python_score, reverse=True)
                elif subject == "4":
                    self.students.sort(key=lambda x: x.c_score, reverse=True)
                elif subject == "5":
                    self.students.sort(key=lambda x: x.machine_learning_score, reverse=True)
                else:
                    print("输入有误，请重新选择")
                    continue
                for student in self.students:
                    self.display_student(student)
            elif choice == "4":
                sort_type = input("请选择排序方式(1、总成绩排名 2、平均分排名):")
                if sort_type == "1":
                    self.students.sort(key=lambda x: x.total_score, reverse=True)
                elif sort_type == "2":
                    self.students.sort(key=lambda x: x.avg_score, reverse=True)
                else:
                    print("输入有误，请重新选择")
                    continue
                for student in self.students:
                    self.display_student(student)
            elif choice == "5":
                break
            else:
                print("输入有误，请重新选择")
    
    def save_to_file(self):
        with open("students.csv", mode="w", newline="") as file:
            writer = csv.writer(file)
            writer.writerow(["学号", "姓名", "高数成绩", "英语成绩", "Python成绩", "C语言成绩", "机器学习成绩", "总成绩", "平均分"])
            for student in self.students:
                writer.writerow([student.student_id, student.name, student.math_score, student.english_score, 
                                student.python_score, student.c_score, student.machine_learning_score, student.total_score, student.avg_score])
        print("文件保存成功！")

    def display_student(self, student):
        print("学号:{}, 姓名:{}, 高数成绩:{}, 英语成绩:{}, Python成绩:{}, C语言成绩:{}, 机器学习成绩:{}"
              .format(student.student_id, student.name, student.math_score, student.english_score, student.python_score,
                      student.c_score, student.machine_learning_score))

    def run(self):
        while True:
            self.display_menu()
            choice = input("请选择功能:")
            if choice == "1":
                self.add_student()
            elif choice == "2":
                self.search_student()
            elif choice == "3":
                self.delete_student()
            elif choice == "4":
                self.modify_student()
            elif choice == "5":
                self.calculate_scores()
            elif choice == "6":
                self.save_to_file()
                break
            else:
                print("输入有误，请重新选择")

if __name__ == "__main__":
    system = GradeManagementSystem()
    system.run()

该系统可以实现录入学生信息、查找学生信息、删除学生信息、修改学生信息、学生成绩统计等功能，同时还可以将学生信息保存到CSV文件中。