python 实现倒计时功能(gui界面)

##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()