编制一个有GUI界面的Python成绩记录簿，每个学生信息包括：学号，姓名，Python成绩。具体功能如下： （1）输入学生信息并保存到文件中 （2）读取文件并显示输出所有学生的成绩； （3）按学号或姓名查询成绩 （4）添加成绩记录； （5）修改指定姓名或学号的学生的成绩并可存盘 （6）显示输出60分以下，60-79，80-89，90分以上各分数段的学生信息

好的，我可以帮你编写这个Python成绩记录簿的GUI程序。我们可以使用Tkinter模块来实现GUI界面，使用文件来保存学生信息和成绩记录。具体实现步骤如下：

1. 导入Tkinter模块和文件操作模块

import tkinter as tk
from tkinter import messagebox
import os

2. 定义主窗口和相关控件

root = tk.Tk()
root.title("Python成绩记录簿")

# 定义标签控件和输入框控件
label_id = tk.Label(root, text="学号：")
entry_id = tk.Entry(root)

label_name = tk.Label(root, text="姓名：")
entry_name = tk.Entry(root)

label_score = tk.Label(root, text="Python成绩：")
entry_score = tk.Entry(root)

# 定义按钮控件
button_add = tk.Button(root, text="添加记录", command=add_record)
button_query = tk.Button(root, text="查询记录", command=query_record)
button_modify = tk.Button(root, text="修改记录", command=modify_record)
button_show = tk.Button(root, text="显示记录", command=show_record)
button_show_stat = tk.Button(root, text="显示统计", command=show_stat)

3. 定义相关函数

（1）添加记录函数

def add_record():
    # 获取输入框内容
    id = entry_id.get()
    name = entry_name.get()
    score = entry_score.get()

    # 判断输入框是否为空
    if not id or not name or not score:
        messagebox.showwarning("警告", "请完整填写学生信息和成绩！")
        return

    # 判断成绩是否是数字
    try:
        score = int(score)
    except ValueError:
        messagebox.showwarning("警告", "成绩必须是数字！")
        return

    # 判断学号是否已存在
    if check_id_exists(id):
        messagebox.showwarning("警告", "该学号已存在，请重新输入！")
        return

    # 将学生信息和成绩记录保存到文件中
    with open("students.txt", "a") as f:
        f.write("{},{},{}\n".format(id, name, score))

    # 清空输入框内容
    entry_id.delete(0, tk.END)
    entry_name.delete(0, tk.END)
    entry_score.delete(0, tk.END)

    messagebox.showinfo("提示", "添加记录成功！")

（2）查询记录函数

def query_record():
    # 获取输入框内容
    id = entry_id.get()
    name = entry_name.get()

    # 判断输入框是否为空
    if not id and not name:
        messagebox.showwarning("警告", "请输入学号或姓名！")
        return

    # 查询学生信息和成绩记录
    records = []
    with open("students.txt", "r") as f:
        for line in f:
            fields = line.strip().split(",")
            if (id and fields[0] == id) or (name and fields[1] == name):
                records.append(fields)

    # 显示查询结果
    if len(records) == 0:
        messagebox.showinfo("提示", "未查询到任何记录！")
    else:
        messagebox.showinfo("查询结果", "\n".join(["学号：{}，姓名：{}，Python成绩：{}".format(record[0], record[1], record[2]) for record in records]))

（3）修改记录函数

def modify_record():
    # 获取输入框内容
    id = entry_id.get()
    name = entry_name.get()
    score = entry_score.get()

    # 判断输入框是否为空
    if not id and not name:
        messagebox.showwarning("警告", "请输入学号或姓名！")
        return
    if not score:
        messagebox.showwarning("警告", "请输入成绩！")
        return

    # 判断成绩是否是数字
    try:
        score = int(score)
    except ValueError:
        messagebox.showwarning("警告", "成绩必须是数字！")
        return

    # 查询学生信息和成绩记录
    records = []
    with open("students.txt", "r") as f:
        for line in f:
            fields = line.strip().split(",")
            if (id and fields[0] == id) or (name and fields[1] == name):
                records.append(fields)

    # 显示查询结果并修改记录
    if len(records) == 0:
        messagebox.showinfo("提示", "未查询到任何记录！")
    elif len(records) == 1:
        # 修改成绩记录
        records[0][2] = str(score)

        # 保存修改后的记录到文件中
        with open("students.txt", "w") as f:
            for record in records:
                f.write("{},{},{}\n".format(record[0], record[1], record[2]))

        messagebox.showinfo("提示", "修改记录成功！")
    else:
        messagebox.showwarning("警告", "查询到多条记录，请输入唯一的学号或姓名！")

（4）显示记录函数

def show_record():
    # 读取所有学生信息和成绩记录
    records = []
    with open("students.txt", "r") as f:
        for line in f:
            fields = line.strip().split(",")
            records.append(fields)

    # 显示所有记录
    if len(records) == 0:
        messagebox.showinfo("提示", "未查询到任何记录！")
    else:
        messagebox.showinfo("所有记录", "\n".join(["学号：{}，姓名：{}，Python成绩：{}".format(record[0], record[1], record[2]) for record in records]))

（5）显示统计函数

def show_stat():
    # 读取所有学生信息和成绩记录
    records = []
    with open("students.txt", "r") as f:
        for line in f:
            fields = line.strip().split(",")
            records.append(fields)

    # 统计各分数段的学生数量
    under_60, between_60_79, between_80_89, above_90 = 0, 0, 0, 0
    for record in records:
        if int(record[2]) < 60:
            under_60 += 1
        elif 60 <= int(record[2]) <= 79:
            between_60_79 += 1
        elif 80 <= int(record[2]) <= 89:
            between_80_89 += 1
        else:
            above_90 += 1

    # 显示统计结果
    messagebox.showinfo("统计结果", "60分以下：{}人\n60-79分：{}人\n80-89分：{}人\n90分以上：{}人".format(under_60, between_60_79, between_80_89, above_90))

（6）检查学号是否已存在函数

def check_id_exists(id):
    with open("students.txt", "r") as f:
        for line in f:
            fields = line.strip().split(",")
            if fields[0] == id:
                return True
    return False

4. 将控件添加到主窗口中

label_id.grid(row=0, column=0)
entry_id.grid(row=0, column=1)

label_name.grid(row=1, column=0)
entry_name.grid(row=1, column=1)

label_score.grid(row=2, column=0)
entry_score.grid(row=2, column=1)

button_add.grid(row=3, column=0)
button_query.grid(row=3, column=1)
button_modify.grid(row=4, column=0)
button_show.grid(row=4, column=1)
button_show_stat.grid(row=5, columnspan=2)

5. 运行主窗口

root.mainloop()

完整代码如下：