校园管理系统Admin端新增Update Timetable功能需求及代码改造

一、重构现有课表数据结构 #

原代码用列表索引对应星期，维护性差，改成字典映射更直观，同时新增持久化逻辑避免重启后数据丢失：

import json

# 默认课表模板（首次运行或文件丢失时使用）
DEFAULT_TIMETABLE = {
    "Monday": ["English", "Maths", "Biology", "Moral"],
    "Tuesday": ["Add_Maths", "Physics", "Malay"],
    "Wednesday": ["History", "Chemistry", "English"],
    "Thursday": ["Moral", "Biology", "Maths", "Malay"],
    "Friday": ["Physics", "Chemistry", "Add_Maths", "History"]
}

# 从本地文件加载课表
def load_timetable():
    try:
        with open("science_timetable.json", "r") as f:
            return json.load(f)
    except FileNotFoundError:
        save_timetable(DEFAULT_TIMETABLE)
        return DEFAULT_TIMETABLE

# 将课表保存到本地文件
def save_timetable(timetable):
    with open("science_timetable.json", "w") as f:
        json.dump(timetable, f, indent=2)

# 初始化加载课表
timetable = load_timetable()

二、封装现有查看课表功能 #

把原查询逻辑封装成独立函数，方便在用户菜单和管理员页面复用：

def view_timetable():
    day = input("Day of the week? ").title()
    if day in timetable:
        print("Your lessons on this day:")
        for idx, lesson in enumerate(timetable[day], 1):
            print(f"{idx}. {lesson}")
    else:
        print("Not a valid week day!")

三、实现管理员课表更新功能 #

新增管理员专属的更新函数，支持单日课程修改和整表重置，包含输入校验和操作确认：

def update_timetable():
    print("\n=== Admin - Update Timetable ===")
    print("1. Update a single day's lessons")
    print("2. Reset entire timetable to default")
    choice = input("Enter your choice (1/2): ")

    if choice == "1":
        day = input("Enter the day to update (e.g. Monday): ").title()
        if day not in timetable:
            print("Invalid day!")
            return
        
        # 接收逗号分隔的课程输入，自动清理空格
        new_lessons = input(f"Enter new lessons for {day}, separated by commas: ").strip().split(",")
        new_lessons = [lesson.strip() for lesson in new_lessons if lesson.strip()]
        
        if not new_lessons:
            print("No valid lessons entered!")
            return
        
        # 确认更新操作
        confirm = input(f"Confirm update {day}'s lessons to: {', '.join(new_lessons)}? (y/n): ").lower()
        if confirm == "y":
            timetable[day] = new_lessons
            save_timetable(timetable)
            print(f"{day}'s timetable updated successfully!")
        else:
            print("Update cancelled.")
    
    elif choice == "2":
        confirm = input("Are you sure you want to reset entire timetable to default? (y/n): ").lower()
        if confirm == "y":
            global timetable
            timetable = DEFAULT_TIMETABLE.copy()
            save_timetable(timetable)
            print("Timetable reset to default successfully!")
        else:
            print("Reset cancelled.")
    
    else:
        print("Invalid choice!")

四、整合到Admin页面菜单 #

在现有Admin菜单中添加更新选项，示例菜单逻辑：

def admin_menu():
    while True:
        print("\n=== Admin Menu ===")
        print("1. View Timetable")
        print("2. Update Timetable")
        print("3. Exit")
        choice = input("Enter your choice: ")
        
        if choice == "1":
            view_timetable()
        elif choice == "2":
            update_timetable()
        elif choice == "3":
            print("Exiting admin panel...")
            break
        else:
            print("Invalid choice!")

# 系统入口示例（需结合现有身份验证逻辑调用）
if __name__ == "__main__":
    admin_menu()

核心优化说明 #

• 数据持久化：用JSON文件存储课表，解决内存数据重启丢失问题
• 代码复用：拆分功能函数，减少冗余代码，方便后续扩展
• 输入校验：对星期、课程输入、操作确认做多层校验，避免非法操作
• 操作灵活性：支持单日课程修改和整表重置，覆盖管理员常见操作场景

内容的提问来源于stack exchange，提问作者mjpro