How to make a simple alarm clock program using Python and Tkinter?

This article mainly uses Python's Tkinter library to create a simple alarm clock program, which can play a sound to remind you at the specified time. The interface of this program is relatively simple, with only one label, three option menus and one button. The user can set the alarm time through the option menu, and then click the button to start timing. When the alarm time is reached, the program will play a sound to remind the user.

Now let us explain the role of each code block one by one.

from tkinter import *
import datetime
import time
import winsound
from threading import *

First, we imported the tkinter library, datetime, time library, winsound library and threading library.

root = Tk()
root.geometry("400x200")

Create a window named root and set the window size to 400x200.

def Threading():
    t1=Thread(target=alarm)
    t1.start()

Define a function Threading(), which will create a new thread named t1 whose goal is to run the alarm() function and start the thread.

def alarm():
    while True:
        set_alarm_time = f"{hour.get()}:{minute.get()}:{second.get()}"
        time.sleep(1)
        current_time = datetime.datetime.now().strftime("%H:%M:%S")
        print(current_time,set_alarm_time)
        if current_time == set_alarm_time:
            print("Time to Wake up")
            winsound.PlaySound("sound.wav",winsound.SND_ASYNC)

This function alarm() is run in a separate thread, which checks every second whether the current time is equal to the set time. If the current time is equal to the set time, winsound.PlaySound() will be called to play a music file to indicate that the time is up.

At the beginning of the function, first get the hours, minutes and seconds set by the user on the interface through hour.get(), minute.get() and second.get(), and then combine them into one character String set_alarm_time. Next, use time.sleep() to make the thread sleep for 1 second, so that every 1 second it will check whether the current time is equal to the set time.

Then, get the current time via datetime.datetime.now().strftime("%H:%M:%S") and format it into a string of hours, minutes and seconds current_time . Finally, if current_time is equal to set_alarm_time, a message is printed and winsound.PlaySound() is called to play a music file.

Label(root,text="Alarm Clock",font=("Helvetica 20 bold"),fg="red").pack(pady=10)
Label(root,text="Set Time",font=("Helvetica 15 bold")).pack()

frame = Frame(root)
frame.pack()

hour = StringVar(root)
hours = ('00', '01', '02', '03', '04', '05', '06', '07',
		'08', '09', '10', '11', '12', '13', '14', '15',
		'16', '17', '18', '19', '20', '21', '22', '23', '24'
		)
hour.set(hours[0])

hrs = OptionMenu(frame, hour, *hours)
hrs.pack(side=LEFT)

minute = StringVar(root)
minutes = ('00', '01', '02', '03', '04', '05', '06', '07',
		'08', '09', '10', '11', '12', '13', '14', '15',
		'16', '17', '18', '19', '20', '21', '22', '23',
		'24', '25', '26', '27', '28', '29', '30', '31',
		'32', '33', '34', '35', '36', '37', '38', '39',
		'40', '41', '42', '43', '44', '45', '46', '47',
		'48', '49', '50', '51', '52', '53', '54', '55',
		'56', '57', '58', '59', '60')
minute.set(minutes[0])

mins = OptionMenu(frame, minute, *minutes)
mins.pack(side=LEFT)

second = StringVar(root)
seconds = ('00', '01', '02', '03', '04', '05', '06', '07',
		'08', '09', '10', '11', '12', '13', '14', '15',
		'16', '17', '18', '19', '20', '21', '22', '23',
		'24', '25', '26', '27', '28', '29', '30', '31',
		'32', '33', '34', '35', '36', '37', '38', '39',
		'40', '41', '42', '43', '44', '45', '46', '47',
		'48', '49', '50', '51', '52', '53', '54', '55',
		'56', '57', '58', '59', '60')
second.set(seconds[0])

secs = OptionMenu(frame, second, *seconds)
secs.pack(side=LEFT)

Button(root,text="Set Alarm",font=("Helvetica 15"),command=Threading).pack(pady=20)

This code is used to add labels, frames, buttons and option menus. First, a frame is created, and then three StringVar type variables hour, minute, and second are created to store the hours, minutes, and seconds selected by the user. Then three tuples hours, minutes, and seconds are defined to store numeric strings from 00 to 60 respectively. The numbers 0~9 are preceded by zeros to ensure a consistent format. Then use OptionMenu to create three option menus for selecting hours, minutes, and seconds.

To sum up, this article provides a basic alarm clock application that can be set up and started through the GUI interface. When the alarm time arrives, the application will play a sound to remind the user.

Attached is the complete source code:

# 导入所需库
from tkinter import *
import datetime
import time
import winsound
from threading import *

# 创建对象
root = Tk()

# 设置几何体
root.geometry("400x200")

# 使用线程
def Threading():
	t1=Thread(target=alarm)
	t1.start()

def alarm():
	# 无限循环
	while True:
		# 设置警报
		set_alarm_time = f"{hour.get()}:{minute.get()}:{second.get()}"

		# 等待一秒钟
		time.sleep(1)

		# 获取当前时间
		current_time = datetime.datetime.now().strftime("%H:%M:%S")
		print(current_time,set_alarm_time)

		# 检查设置的报警是否等于当前时间
		if current_time == set_alarm_time:
			print("Time to Wake up")
			# 播放声音
			winsound.PlaySound("sound.wav",winsound.SND_ASYNC)

# 添加标签、框架、按钮、选项菜单
Label(root,text="Alarm Clock",font=("Helvetica 20 bold"),fg="red").pack(pady=10)
Label(root,text="Set Time",font=("Helvetica 15 bold")).pack()

frame = Frame(root)
frame.pack()

hour = StringVar(root)
hours = ('00', '01', '02', '03', '04', '05', '06', '07',
		'08', '09', '10', '11', '12', '13', '14', '15',
		'16', '17', '18', '19', '20', '21', '22', '23', '24'
		)
hour.set(hours[0])

hrs = OptionMenu(frame, hour, *hours)
hrs.pack(side=LEFT)

minute = StringVar(root)
minutes = ('00', '01', '02', '03', '04', '05', '06', '07',
		'08', '09', '10', '11', '12', '13', '14', '15',
		'16', '17', '18', '19', '20', '21', '22', '23',
		'24', '25', '26', '27', '28', '29', '30', '31',
		'32', '33', '34', '35', '36', '37', '38', '39',
		'40', '41', '42', '43', '44', '45', '46', '47',
		'48', '49', '50', '51', '52', '53', '54', '55',
		'56', '57', '58', '59', '60')
minute.set(minutes[0])

mins = OptionMenu(frame, minute, *minutes)
mins.pack(side=LEFT)

second = StringVar(root)
seconds = ('00', '01', '02', '03', '04', '05', '06', '07',
		'08', '09', '10', '11', '12', '13', '14', '15',
		'16', '17', '18', '19', '20', '21', '22', '23',
		'24', '25', '26', '27', '28', '29', '30', '31',
		'32', '33', '34', '35', '36', '37', '38', '39',
		'40', '41', '42', '43', '44', '45', '46', '47',
		'48', '49', '50', '51', '52', '53', '54', '55',
		'56', '57', '58', '59', '60')
second.set(seconds[0])

secs = OptionMenu(frame, second, *seconds)
secs.pack(side=LEFT)

Button(root,text="Set Alarm",font=("Helvetica 15"),command=Threading).pack(pady=20)

# 执行Tkinter	
root.mainloop()

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