初级python代码编程学习----简单的图形化闹钟小程序

我们来创建一个简单的图形化闹钟程序通常需要使用图形用户界面（GUI）库。以下是使用Python的Tkinter库创建一个基本闹钟程序的步骤：

环境准备

确保已安装Python。
安装Tkinter库（Python 3.8及以上版本自带Tkinter，无需额外安装）。

编写代码

以下是一个简单的闹钟程序示例：

import tkinter as tk
from datetime import datetime, timedelta
import time

class AlarmClock:
def __init__(self, master):
self.master = master
master.title("图形化闹钟")

self.label = tk.Label(master, text="", font=('Helvetica', 40))
self.label.pack()

self.set_alarm_button = tk.Button(master, text="设置闹钟", command=self.set_alarm)
self.set_alarm_button.pack()

self.alarm_time = None

def set_alarm(self):
now = datetime.now().strftime('%H:%M:%S')
self.alarm_time = datetime.strptime(now, '%H:%M:%S') + timedelta(seconds=60) # 闹钟设置为一分钟后
self.update_label()

def update_label(self):
now = datetime.now()
if now >= self.alarm_time:
self.label.config(text="闹钟响了！")
else:
seconds_remaining = (self.alarm_time - now).total_seconds()
minutes, seconds = divmod(seconds_remaining, 60)
time_string = f"{int(minutes):02d}:{int(seconds):02d}"
self.label.config(text=time_string)

self.master.after(1000, self.update_label)

if __name__ == "__main__":
root = tk.Tk()
alarm_clock = AlarmClock(root)
root.mainloop()

源代码

import tkinter as tk
from datetime import datetime, timedelta
import time

class AlarmClock:
    def __init__(self, master):
        self.master = master
        master.title("图形化闹钟")

        self.label = tk.Label(master, text="", font=('Helvetica', 40))
        self.label.pack()

        self.set_alarm_button = tk.Button(master, text="设置闹钟", command=self.set_alarm)
        self.set_alarm_button.pack()

        self.alarm_time = None

    def set_alarm(self):
        now = datetime.now().strftime('%H:%M:%S')
        self.alarm_time = datetime.strptime(now, '%H:%M:%S') + timedelta(seconds=60)  # 闹钟设置为一分钟后
        self.update_label()

    def update_label(self):
        now = datetime.now()
        if now >= self.alarm_time:
            self.label.config(text="闹钟响了！")
        else:
            seconds_remaining = (self.alarm_time - now).total_seconds()
            minutes, seconds = divmod(seconds_remaining, 60)
            time_string = f"{int(minutes):02d}:{int(seconds):02d}"
            self.label.config(text=time_string)
        
        self.master.after(1000, self.update_label)

if __name__ == "__main__":
    root = tk.Tk()
    alarm_clock = AlarmClock(root)
    root.mainloop()

保存为.py文件。例如123.py

然后在Python环境下运行它。例如

Python 123.py