python 实现倒计时功能(gui界面)

运行效果：

完整源码：

##import library
from tkinter import *
import time
from playsound import playsound

## display window
root = Tk()
root.geometry('400x300')
root.resizable(0,0)
root.config(bg ='blanched almond')
root.title('TechVidvan - Countdown Clock And Timer')
Label(root, text = 'Countdown Clock and Timer' , font = 'arial 20 bold', bg ='papaya whip').pack()

#display current time#######################

Label(root, font ='arial 15 bold', text = 'current time :', bg = 'papaya whip').place(x = 40 ,y = 70)

####fun to display current time
def clock():
clock_time = time.strftime('％H:％M:％S ％p')
curr_time.config(text = clock_time)
curr_time.after(1000,clock)

curr_time =Label(root, font ='arial 15 bold', text = '', fg = 'gray25' ,bg ='papaya whip')
curr_time.place(x = 190 , y = 70)
clock()

#######################timer countdown##########

#storing seconds
sec = StringVar()
Entry(root, textvariable = sec, width = 2, font = 'arial 12').place(x=250, y=155)
sec.set('00')

#storing minutes
mins= StringVar()
Entry(root, textvariable = mins, width =2, font = 'arial 12').place(x=225, y=155)
mins.set('00')

# storing hours
hrs= StringVar()
Entry(root, textvariable = hrs, width =2, font = 'arial 12').place(x=200, y=155)
hrs.set('00')

##########fun to start countdown

def countdown():
times = int(hrs.get())*3600+ int(mins.get())*60 + int(sec.get())
while times > -1:
 minute,second = (times // 60 , times ％ 60)

hour = 0
 if minute > 60:
  hour , minute = (minute // 60 , minute ％ 60)

sec.set(second)
 mins.set(minute)
 hrs.set(hour)

root.update()
 time.sleep(1)

if(times == 0):
  playsound('Loud_Alarm_Clock_Buzzer.mp3')
  sec.set('00')
  mins.set('00')
  hrs.set('00')
 times -= 1

Label(root, font ='arial 15 bold', text = 'set the time', bg ='papaya whip').place(x = 40 ,y = 150)

Button(root, text='START', bd ='5', command = countdown, bg = 'antique white', font = 'arial 10 bold').place(x=150, y=210)

root.mainloop()

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来源：https://techvidvan.com/tutorials/countdown-clock-timer-python/