from tkinter import *

root=Tk()

root.title("倒计时")

root.geometry("240x120")

running=False

paused=False

r_time=60

def update_timer():

global running,paused,r_time

if running:

if paused:

label1.config(text="暂停")

else:

if r_time>0:

r_time-=1

label1.config(text=str(r_time))

root.after(1000,update_timer)

else:

running=False

label1.config(text="时间到！")

def start():

global running

if not running:

running = True

update_timer()

def pause():

global running

global paused

if running and not paused:

paused = True

def resume():

global paused

if paused:

paused = False

update_timer()

label1=Label(root,font=("Arial",40,"bold"),bg="yellow",fg="blue",width=8,anchor="center")

label1.grid(row=0,rowspan=3)

start_button=Button(root,text="开始",command=start)

start_button.place(x=40,y=70)

pause_button=Button(root,text="暂停",command=pause)

pause_button.place(x=80,y=70)

resume_button=Button(root,text="恢复",command=resume)

resume_button.place(x=120,y=70)

releas_button=Button(root,text="关闭",command=root.destroy)

releas_button.place(x=160,y=70)

root.mainloop()