用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: 程序运行后，需要显示系统主菜单: --主菜单------- 1、 录入学生信息 查找学生信息 2- 3、 删除学生信息 4、 修改学生信息 5、 学生成绩统计 6 退出系统 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?[YN:(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) 将所有汇总信息保存到一个.csv文件中

以下是基于Python的学生成绩管理系统的代码实现：

import csv

class Student:
    def __init__(self, id, name, math_score, eng_score, py_score, c_score, ml_score):
        self.id = id
        self.name = name
        self.math_score = math_score
        self.eng_score = eng_score
        self.py_score = py_score
        self.c_score = c_score
        self.ml_score = ml_score

    def get_total_score(self):
        return self.math_score + self.eng_score + self.py_score + self.c_score + self.ml_score

    def get_avg_score(self):
        return self.get_total_score() / 5

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

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

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

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

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

    def modify_student_by_id(self, id, name, math_score, eng_score, py_score, c_score, ml_score):
        for student in self.students:
            if student.id == id:
                student.name = name
                student.math_score = math_score
                student.eng_score = eng_score
                student.py_score = py_score
                student.c_score = c_score
                student.ml_score = ml_score
                return True
        return False

    def get_total_avg_score(self):
        total_score = 0
        for student in self.students:
            total_score += student.get_total_score()
        return total_score / len(self.students)

    def get_math_avg_score(self):
        math_score = 0
        for student in self.students:
            math_score += student.math_score
        return math_score / len(self.students)

    def get_eng_avg_score(self):
        eng_score = 0
        for student in self.students:
            eng_score += student.eng_score
        return eng_score / len(self.students)

    def get_py_avg_score(self):
        py_score = 0
        for student in self.students:
            py_score += student.py_score
        return py_score / len(self.students)

    def get_c_avg_score(self):
        c_score = 0
        for student in self.students:
            c_score += student.c_score
        return c_score / len(self.students)

    def get_ml_avg_score(self):
        ml_score = 0
        for student in self.students:
            ml_score += student.ml_score
        return ml_score / len(self.students)

    def export_to_csv(self, filename):
        with open(filename, 'w', newline='') as csvfile:
            writer = csv.writer(csvfile)
            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'])
            for student in self.students:
                writer.writerow([student.id, student.name, student.math_score, student.eng_score, student.py_score, student.c_score, student.ml_score])

def get_input(prompt, input_type=None):
    while True:
        try:
            if input_type:
                value = input_type(input(prompt))
            else:
                value = input(prompt)
            return value
        except:
            print('输入的数据类型不正确，请重新输入！')

scoresheet = Scoresheet()

while True:
    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')
    choice = get_input('请选择功能：', int)

    if choice == 1:
        while True:
            id = get_input('请输入学生学号：')
            name = get_input('请输入学生姓名：')
            math_score = get_input('请输入学生高数成绩：', float)
            eng_score = get_input('请输入学生英语成绩：', float)
            py_score = get_input('请输入学生Python成绩：', float)
            c_score = get_input('请输入学生C语言成绩：', float)
            ml_score = get_input('请输入学生机器学习成绩：', float)
            student = Student(id, name, math_score, eng_score, py_score, c_score, ml_score)
            scoresheet.add_student(student)
            is_finished = input('录入完毕？[Y/N]：')
            if is_finished.lower() == 'y':
                break

    elif choice == 2:
        while True:
            search_type = get_input('请选择查找类型（1-学号，2-姓名）：', int)
            if search_type == 1:
                id = get_input('请输入要查找的学生学号：')
                student = scoresheet.search_student_by_id(id)
                if student:
                    print(f'学号：{student.id}，姓名：{student.name}，高数成绩：{student.math_score}，英语成绩：{student.eng_score}，Python成绩：{student.py_score}，C语言成绩：{student.c_score}，机器学习成绩：{student.ml_score}')
                else:
                    print('未找到该学生信息！')
            elif search_type == 2:
                name = get_input('请输入要查找的学生姓名：')
                student = scoresheet.search_student_by_name(name)
                if student:
                    print(f'学号：{student.id}，姓名：{student.name}，高数成绩：{student.math_score}，英语成绩：{student.eng_score}，Python成绩：{student.py_score}，C语言成绩：{student.c_score}，机器学习成绩：{student.ml_score}')
                else:
                    print('未找到该学生信息！')
            else:
                print('输入的查找类型不正确，请重新输入！')
            is_continue = input('是否继续查找？[Y/N]：')
            if is_continue.lower() != 'y':
                break

    elif choice == 3:
        while True:
            id = get_input('请输入要删除的学生学号：')
            if scoresheet.remove_student_by_id(id):
                print('删除成功！')
            else:
                print('未找到该学生信息！')
            is_continue = input('是否继续删除？[Y/N]：')
            if is_continue.lower() != 'y':
                break

    elif choice == 4:
        while True:
            id = get_input('请输入要修改的学生学号：')
            name = get_input('请输入学生姓名：')
            math_score = get_input('请输入学生高数成绩：', float)
            eng_score = get_input('请输入学生英语成绩：', float)
            py_score = get_input('请输入学生Python成绩：', float)
            c_score = get_input('请输入学生C语言成绩：', float)
            ml_score = get_input('请输入学生机器学习成绩：', float)
            if scoresheet.modify_student_by_id(id, name, math_score, eng_score, py_score, c_score, ml_score):
                print('修改成功！')
            else:
                print('未找到该学生信息！')
            is_continue = input('是否继续修改？[Y/N]：')
            if is_continue.lower() != 'y':
                break

    elif choice == 5:
        total_avg_score = scoresheet.get_total_avg_score()
        math_avg_score = scoresheet.get_math_avg_score()
        eng_avg_score = scoresheet.get_eng_avg_score()
        py_avg_score = scoresheet.get_py_avg_score()
        c_avg_score = scoresheet.get_c_avg_score()
        ml_avg_score = scoresheet.get_ml_avg_score()
        print(f'所有学生的总平均分：{total_avg_score:.2f}')
        print(f'高数的平均分：{math_avg_score:.2f}')
        print(f'英语的平均分：{eng_avg_score:.2f}')
        print(f'Python的平均分：{py_avg_score:.2f}')
        print(f'C语言的平均分：{c_avg_score:.2f}')
        print(f'机器学习的平均分：{ml_avg_score:.2f}')
        filename = get_input('请输入导出的文件名：')
        scoresheet.export_to_csv(filename)
        print(f'成绩已导出到{filename}文件中！')

    elif choice == 6:
        print('谢谢使用！')
        break

    else:
        print('输入的菜单编号不正确，请重新输入！')