Python tkinter 实现十分钟的倒计时程序

下面是用Python tkinter实现10分钟倒计时程序的示例代码：

import tkinter as tk
from datetime import datetime, timedelta

class CountdownTimer():
    def __init__(self, master):
        self.master = master
        master.title("10 Minutes Countdown Timer")
        master.geometry("300x100")

        self.time_left = timedelta(minutes=10)
        self.timer_running = False

        self.label = tk.Label(master, text=self.format_time(self.time_left))
        self.label.pack(pady=10)

        self.start_button = tk.Button(master, text="Start", command=self.start_timer)
        self.start_button.pack(side=tk.LEFT, padx=10)

        self.stop_button = tk.Button(master, text="Stop", command=self.stop_timer, state=tk.DISABLED)
        self.stop_button.pack(side=tk.LEFT, padx=10)

    def start_timer(self):
        self.timer_running = True
        self.start_button.config(state=tk.DISABLED)
        self.stop_button.config(state=tk.NORMAL)
        self.update_time()

    def stop_timer(self):
        self.timer_running = False
        self.start_button.config(state=tk.NORMAL)
        self.stop_button.config(state=tk.DISABLED)

    def update_time(self):
        if self.timer_running:
            self.time_left -= timedelta(seconds=1)
            self.label.config(text=self.format_time(self.time_left))
            if self.time_left == timedelta(seconds=0):
                self.timer_running = False
                self.master.bell() # 播放提示音
        self.master.after(1000, self.update_time)

    def format_time(self, time_delta):
        minutes, seconds = divmod(time_delta.seconds, 60)
        return f'{minutes:02d}:{seconds:02d}'

root = tk.Tk()
timer = CountdownTimer(root)
root.mainloop()

运行上面的代码，会弹出一个窗口，窗口中心显示倒计时的时间，左侧是“开始”按钮，右侧是“停止”按钮，点击“开始”按钮，倒计时开始，按钮变为不可用状态，点击“停止”按钮，倒计时暂停，按钮变为不可用状态。当倒计时结束时，会播放提示音。