python课设

import tkinter as tk
from tkinter import messagebox, simpledialog
import json
import re
import os

STUDENT_FILE = 'students.json'

def load_students():
    if not os.path.exists(STUDENT_FILE):
        return []

    with open(STUDENT_FILE, 'r', encoding='utf-8') as file:
        return json.load(file)

def save_students(students):
    with open(STUDENT_FILE, 'w', encoding='utf-8') as file:
        json.dump(students, file, ensure_ascii=False, indent=2)

def show_students(students):
    sorted_students = sorted(students, key=lambda x: x['id'])  # 按学号排序
    students_text = ""
    for student in sorted_students:
        students_text += f"学号: {student['id']}\n"
        students_text += f"姓名: {student['name']}\n"
        students_text += f"年龄: {student['age']}\n"
        students_text += f"性别: {student['gender']}\n\n"
    return students_text

def validate_id(student_id):
    return bool(student_id.strip())

def add_student(students):
    dialog = tk.Toplevel()
    dialog.title("添加学生信息")
    dialog.geometry("250x200+900+400")
    tk.Label(dialog, text="学号：").grid(row=0, column=0, padx=10, pady=5)
    id_var = tk.StringVar()
    tk.Entry(dialog, textvariable=id_var).grid(row=0, column=1, padx=10, pady=5)

    tk.Label(dialog, text="姓名：").grid(row=1, column=0, padx=10, pady=5)
    name_var = tk.StringVar()
    tk.Entry(dialog, textvariable=name_var).grid(row=1, column=1, padx=10, pady=5)

    tk.Label(dialog, text="年龄：").grid(row=2, column=0, padx=10, pady=5)
    age_var = tk.StringVar()
    tk.Entry(dialog, textvariable=age_var).grid(row=2, column=1, padx=10, pady=5)

    tk.Label(dialog, text="性别：").grid(row=3, column=0, padx=10, pady=5)
    gender_var = tk.StringVar()
    gender_var.set("男")
    gender_menu = tk.OptionMenu(dialog, gender_var, "男", "女")
    gender_menu.grid(row=3, column=1, padx=10, pady=5)

    def add_student_action():
        student_info = {
            'id': id_var.get(),
            'name': name_var.get(),
            'age': age_var.get(),
            'gender': gender_var.get()
        }

        if not student_info['id'] or not validate_id(student_info['id']):
            messagebox.showerror("错误", "学号格式错误，请重新输入。")
            return

        if any(student['id'] == student_info['id'] for student in students):
            messagebox.showerror("错误", "学号已存在，请重新输入。")
            return

        students.append(student_info)
        messagebox.showinfo("成功", "学生信息添加成功！")
        dialog.destroy()

    add_button = tk.Button(dialog, text="添加", command=add_student_action)
    add_button.grid(row=4, columnspan=2, pady=10)

def edit_student(students):
    student_id = simpledialog.askstring("输入", "请输入要编辑的学号：")
    if not student_id or not validate_id(student_id):
        messagebox.showerror("错误", "学号格式错误，请重新输入。")
        return

    student = next((s for s in students if s['id'] == student_id), None)
    if student:
        messagebox.showinfo("信息", f"学号: {student['id']}\n姓名: {student['name']}\n年龄: {student['age']}\n性别: {student['gender']}")

        dialog = tk.Toplevel()
        dialog.title("编辑学生信息")
        dialog.geometry("250x200+900+400")
        tk.Label(dialog, text="姓名：").grid(row=1, column=0, padx=10, pady=5)
        name_var = tk.StringVar(value=student['name'])
        tk.Entry(dialog, textvariable=name_var).grid(row=1, column=1, padx=10, pady=5)

        tk.Label(dialog, text="年龄：").grid(row=2, column=0, padx=10, pady=5)
        age_var = tk.StringVar(value=str(student['age']))
        tk.Entry(dialog, textvariable=age_var).grid(row=2, column=1, padx=10, pady=5)

        tk.Label(dialog, text="性别：").grid(row=3, column=0, padx=10, pady=5)
        gender_var = tk.StringVar(value=student['gender'])
        gender_menu = tk.OptionMenu(dialog, gender_var, "男", "女")
        gender_menu.grid(row=3, column=1, padx=10, pady=5)

        def edit_student_action():
            student['name'] = name_var.get()
            student['age'] = int(age_var.get())
            student['gender'] = gender_var.get()
            messagebox.showinfo("成功", "学生信息编辑成功！")
            dialog.destroy()

        edit_button = tk.Button(dialog, text="编辑", command=edit_student_action)
        edit_button.grid(row=4, columnspan=2, pady=10)
    else:
        messagebox.showerror("错误", "未找到该学生信息。")

def delete_student(students):
    student_id = simpledialog.askstring("输入", "请输入要删除的学号：")
    if not student_id or not validate_id(student_id):
        messagebox.showerror("错误", "学号格式错误，请重新输入。")
        return

    student = next((s for s in students if s['id'] == student_id), None)
    if student:
        students.remove(student)
        messagebox.showinfo("成功", "学生信息删除成功！")
    else:
        messagebox.showerror("错误", "未找到该学生信息。")

def main():
    root = tk.Tk()
    root.title("学生信息管理系统")

    students = load_students()

    window_width = 800
    window_height = 500
    screen_width = root.winfo_screenwidth()
    screen_height = root.winfo_screenheight()

    x_position = (screen_width - window_width) // 2
    y_position = (screen_height - window_height) // 2

    root.geometry(f"{window_width}x{window_height}+{x_position}+{y_position}")

    def show_students_command():
        students_text = show_students(students)
        messagebox.showinfo("学生信息", students_text)

    def add_student_command():
        add_student(students)

    def delete_student_command():
        delete_student(students)

    def edit_student_command():
        edit_student(students)

    def save_and_exit():
        save_students(students)
        root.destroy()

    show_students_button = tk.Button(root, text="显示所有学生信息", command=show_students_command)
    show_students_button.pack()

    add_student_button = tk.Button(root, text="添加学生信息", command=add_student_command)
    add_student_button.pack()

    delete_student_button = tk.Button(root, text="删除学生信息", command=delete_student_command)
    delete_student_button.pack()

    edit_student_button = tk.Button(root, text="编辑学生信息", command=edit_student_command)
    edit_student_button.pack()

    exit_button = tk.Button(root, text="保存并退出", command=save_and_exit)
    exit_button.pack()

    root.mainloop()

if __name__ == "__main__":
    main()