GUI设计秒表计时器

好的，可以使用Python和Tkinter库来实现一个简单的GUI秒表计时器。下面是一个示例代码：

import tkinter as tk
from datetime import datetime

class Stopwatch:

    def __init__(self, master):
        self.master = master
        master.title("秒表计时器")

        self.time_var = tk.StringVar()
        self.time_var.set("00:00:00")

        self.label = tk.Label(master, textvariable=self.time_var, font=("Arial", 36), width=8)
        self.label.pack(pady=20)

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

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

        self.reset_button = tk.Button(master, text="重置", command=self.reset, state=tk.DISABLED)
        self.reset_button.pack(side=tk.LEFT, padx=10)

        self.running = False
        self.elapsed_time = 0
        self.last_start_time = None

    def start(self):
        self.running = True
        self.start_button.config(state=tk.DISABLED)
        self.stop_button.config(state=tk.NORMAL)
        self.reset_button.config(state=tk.DISABLED)
        self.update_timer()

    def stop(self):
        self.running = False
        self.start_button.config(state=tk.NORMAL)
        self.stop_button.config(state=tk.DISABLED)
        self.reset_button.config(state=tk.NORMAL)

    def reset(self):
        self.elapsed_time = 0
        self.time_var.set("00:00:00")
        self.start_button.config(state=tk.NORMAL)
        self.stop_button.config(state=tk.DISABLED)
        self.reset_button.config(state=tk.DISABLED)

    def update_timer(self):
        if self.running:
            if self.last_start_time is None:
                self.last_start_time = datetime.now()
            else:
                current_time = datetime.now()
                self.elapsed_time += (current_time - self.last_start_time).total_seconds()
                self.last_start_time = current_time

            time_string = self.format_time(self.elapsed_time)
            self.time_var.set(time_string)
            self.master.after(100, self.update_timer)

    def format_time(self, elapsed_time):
        hours = int(elapsed_time // 3600)
        minutes = int((elapsed_time % 3600) // 60)
        seconds = int(elapsed_time % 60)
        return "{:02d}:{:02d}:{:02d}".format(hours, minutes, seconds)

root = tk.Tk()
stopwatch = Stopwatch(root)
root.mainloop()

这段代码创建了一个名为“秒表计时器”的窗口，其中包含一个标签、一个开始按钮、一个停止按钮和一个重置按钮。当点击开始按钮时，计时器开始计时，标签上显示的时间会不断更新。当点击停止按钮时，计时器停止计时，标签上的时间不再更新。当点击重置按钮时，计时器重置为初始状态。

希望这个示例能够帮助你实现自己的GUI秒表计时器。