GUI版的学生成绩管理系统，具有如下功能： 1）学生的信息输入，（学生，包括属性：学号，姓名，C成绩，C++成绩，python成绩） 2）显示输入的学生信息 3）按学生总分对学生降序排序。 4）计算每个学生的总分

好的，根据您的需求，我给您提供一个简单的GUI版的学生成绩管理系统，具有如下功能：

1. 学生的信息输入，包括学号、姓名、C成绩、C++成绩、Python成绩。
2. 显示输入的学生信息。
3. 按学生总分对学生降序排序。
4. 计算每个学生的总分。

import tkinter as tk
from tkinter import messagebox

class Student:
    def __init__(self, id, name, c_score, cpp_score, python_score):
        self.id = id
        self.name = name
        self.c_score = c_score
        self.cpp_score = cpp_score
        self.python_score = python_score
        self.total_score = c_score + cpp_score + python_score

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

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

    def get_students(self):
        return self.students

    def sort_students_by_total_score_desc(self):
        self.students.sort(key=lambda student: student.total_score, reverse=True)

class GUI:
    def __init__(self, parent):
        self.parent = parent
        self.grade_manager = GradeManager()
        self.create_widgets()

    def create_widgets(self):
        # Label for id
        tk.Label(self.parent, text="ID").grid(row=0, column=0)
        self.id_entry = tk.Entry(self.parent)
        self.id_entry.grid(row=0, column=1)

        # Label for name
        tk.Label(self.parent, text="Name").grid(row=1, column=0)
        self.name_entry = tk.Entry(self.parent)
        self.name_entry.grid(row=1, column=1)

        # Label for c_score
        tk.Label(self.parent, text="C Score").grid(row=2, column=0)
        self.c_score_entry = tk.Entry(self.parent)
        self.c_score_entry.grid(row=2, column=1)

        # Label for cpp_score
        tk.Label(self.parent, text="C++ Score").grid(row=3, column=0)
        self.cpp_score_entry = tk.Entry(self.parent)
        self.cpp_score_entry.grid(row=3, column=1)

        # Label for python_score
        tk.Label(self.parent, text="Python Score").grid(row=4, column=0)
        self.python_score_entry = tk.Entry(self.parent)
        self.python_score_entry.grid(row=4, column=1)

        # Button for adding a student
        tk.Button(self.parent, text="Add student", command=self.add_student).grid(row=5, columnspan=2)

        # Button for sorting students
        tk.Button(self.parent, text="Sort students by total score", command=self.sort_students).grid(row=6, columnspan=2)

        # Listbox for displaying students
        self.listbox = tk.Listbox(self.parent)
        self.listbox.grid(row=7, columnspan=2)

    def add_student(self):
        id = self.id_entry.get()
        name = self.name_entry.get()
        c_score = int(self.c_score_entry.get())
        cpp_score = int(self.cpp_score_entry.get())
        python_score = int(self.python_score_entry.get())
        student = Student(id, name, c_score, cpp_score, python_score)
        self.grade_manager.add_student(student)
        self.list_students()

    def sort_students(self):
        self.grade_manager.sort_students_by_total_score_desc()
        self.list_students()

    def list_students(self):
        self.listbox.delete(0, tk.END)
        for student in self.grade_manager.get_students():
            self.listbox.insert(tk.END, "ID: {}, Name: {}, C Score: {}, C++ Score: {}, Python Score: {}, Total Score: {}".format(student.id, student.name, student.c_score, student.cpp_score, student.python_score, student.total_score))

if __name__ == "__main__":
    root = tk.Tk()
    root.title("Grade Manager")
    gui = GUI(root)
    root.mainloop()

这个程序中，我们定义了一个学生类`Student`，包含学生的学号、姓名、C成绩、C++成绩、Python成绩和总分。然后定义了一个成绩管理类`GradeManager`，包含添加学生、获取学生列表和按总分排序的方法。最后，我们使用Tkinter来创建GUI界面，包含添加学生的表单、排序按钮和显示学生列表的列表框。在添加学生时，我们创建一个`Student`对象并添加到`GradeManager`中，然后重新显示学生列表。在按总分排序时，我们调用`GradeManager`的排序方法，然后重新显示学生列表。