用python并使用库实现操作界面写一个学生成绩管理系统设计 学生成绩信息包括：学期，学号，班别，姓名，四门课程成绩（语文、数学、英语和计算机）等。主要功能： （1）能按学期、按班级完成对学⽣成绩的录⼊、修改 （2）能按班级统计学⽣的成绩，求学⽣的总分及平均分 （3）能查询学⽣成绩，不及格科⽬及学⽣名单 （4）能按班级输出学⽣的成绩单 要求：使⽤⽂件⽅式存储数据。

好的，我可以帮你实现一个学生成绩管理系统，使用Python和Tkinter库来创建GUI界面，并使用文件来存储数据。以下是一个基本的代码框架，你可以根据需要进行修改和扩展：

import tkinter as tk
import os

class Student:
    def __init__(self, term, number, cls, name, scores):
        self.term = term
        self.number = number
        self.cls = cls
        self.name = name
        self.scores = scores

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

    def load_data(self):
        if os.path.exists("data.txt"):
            with open("data.txt", "r") as f:
                lines = f.readlines()
                for line in lines:
                    data = line.strip().split(",")
                    term = data[0]
                    number = data[1]
                    cls = data[2]
                    name = data[3]
                    scores = [int(x) for x in data[4:]]
                    student = Student(term, number, cls, name, scores)
                    self.students.append(student)

    def save_data(self):
        with open("data.txt", "w") as f:
            for student in self.students:
                data = [student.term, student.number, student.cls, student.name] + student.scores
                line = ",".join(str(x) for x in data) + "\n"
                f.write(line)

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

    def update_student(self, student):
        for i in range(len(self.students)):
            if self.students[i].number == student.number:
                self.students[i] = student
                self.save_data()
                break

    def get_students_by_term(self, term):
        return [student for student in self.students if student.term == term]

    def get_students_by_cls(self, cls):
        return [student for student in self.students if student.cls == cls]

    def get_student_by_number(self, number):
        for student in self.students:
            if student.number == number:
                return student
        return None

    def get_fail_students(self):
        fail_students = []
        for student in self.students:
            if any(score < 60 for score in student.scores):
                fail_students.append(student)
        return fail_students

    def get_total_score(self, student):
        return sum(student.scores)

    def get_avg_score(self, student):
        return sum(student.scores) / len(student.scores)

class App:
    def __init__(self, master):
        self.master = master
        self.manager = GradeManager()

        # TODO: 创建GUI界面，包括各种控件和事件处理函数

if __name__ == "__main__":
    root = tk.Tk()
    app = App(root)
    root.mainloop()

以上代码实现了一个GradeManager类，用于管理学生信息。它可以从文件中读取数据并保存数据，添加、更新、查询学生信息，计算学生成绩等。在GUI界面中，你可以创建各种控件，比如文本框、标签、下拉框、按钮等，来实现各种功能，比如添加学生、修改学生成绩、查询学生成绩等。你需要根据需求来设计界面和事件处理函数，将GUI控件和GradeManager类结合起来，完成学生成绩管理系统的开发。