国庆假期快到了，想查查还有几天几小时到假期，这对程序员小菜一碟，轻轻松松用python写个倒计时程序（天、时、分、秒），助你熬到假期！

一、先看效果：

 二、安装python：

1、下载安装python

下载安装python3.9.6，进入python官方网站：//www.python.org/

 点击Python 3.9.6

直接安装即可。

2、验证安装成功。

按win+R输入cmd，打开控制台，输入python -V，输出python版本号说明安装成功。

三、代码

##import libraryfrom tkinter import *import timefrom datetime import datetime,timedelta################GUI to display window ##########################root = Tk()root.geometry("450x300")root.resizable(0,0)root.config(bg ="blanched almond")root.title("国庆倒计时")Label(root, text = "国庆倒计时" , font = "arial 20 bold", bg ="papaya whip").pack()############GUI to display current time#######################Label(root, font ="arial 15 bold", text = " 当前时间：", bg = "papaya whip").place(x = 40 ,y = 70)#######################GUI to set the future time ##########Label(root, font ="arial 15 bold", text = " 到达时间：", bg = "papaya whip").place(x = 40 ,y = 110)#set yearyear_set = StringVar()Entry(root, textvariable =year_set , width = 4, font = "arial 12").place(x=175, y=115)Label(root, font ="arial 15", text = "-", bg = "papaya whip").place(x = 215 ,y = 110)year_set.set("0000")#set monthmonth_set= StringVar()Entry(root, textvariable =month_set, width =2, font = "arial 12").place(x=235, y=115)Label(root, font ="arial 15", text ="-", bg = "papaya whip").place(x = 260 ,y = 110)month_set.set("00")#set dayday_set= StringVar()Entry(root, textvariable =day_set, width =2, font = "arial 12").place(x=275, y=115)day_set.set("00")# set hourhour_set= StringVar()Entry(root, textvariable =hour_set, width =2, font = "arial 12").place(x=305, y=115)Label(root, font ="arial 15", text = ":", bg = "papaya whip").place(x = 330 ,y = 110)hour_set.set("00")# set minmin_set= StringVar()Entry(root, textvariable =min_set, width =2, font = "arial 12").place(x=345, y=115)Label(root, font ="arial 15", text = ":", bg = "papaya whip").place(x = 370 ,y = 110)min_set.set("00")# set secsec_set= StringVar()Entry(root, textvariable =sec_set, width =2, font = "arial 12").place(x=385, y=115)sec_set.set("00")#######################GUI to display timer countdown ##########Label(root, font ="arial 15 bold", text = " 倒计时：", bg ="papaya whip").place(x = 40 ,y = 150)#storing secondssec = StringVar()Entry(root, textvariable = sec, width = 2, font = "arial 12").place(x=325, y=155)Label(root, font ="arial 15", text = "秒", bg = "papaya whip").place(x = 350 ,y = 150)sec.set("00")#storing minutesmins= StringVar()Entry(root, textvariable = mins, width =2, font = "arial 12").place(x=275, y=155)Label(root, font ="arial 15", text = "分", bg = "papaya whip").place(x = 300 ,y = 150)mins.set("00")# storing hourshrs= StringVar()Entry(root, textvariable = hrs, width =2, font = "arial 12").place(x=225, y=155)Label(root, font ="arial 15", text = "时", bg = "papaya whip").place(x = 250 ,y = 150)hrs.set("00")# storing daysdays= StringVar()Entry(root, textvariable = days, width =2, font = "arial 12").place(x=175, y=155)Label(root, font ="arial 15", text = "天", bg = "papaya whip").place(x = 200 ,y = 150)days.set("00")#########fun to display current time#############def clock(): clock_time = time.strftime("%Y-%m-%d %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 = 175 , y = 70)clock()##########fun to start countdown########def countdown(): #now = datetime.now() #end = datetime((year_set).get(),(month_set).get(),(day_set).get(),(hour_set).get(),(min_set).get(),(sec_set).get(),00); global seconds_now now = time.time() lt_ = time.strptime(f"{(year_set).get()} {(month_set).get()} {(day_set).get()} {(hour_set).get()} {(min_set).get()} {(sec_set).get()}", "%Y %m %d %H %M %S") end = time.mktime(lt_) times=int (end-now)  #.total_seconds()); while times > -1:  minute,second = (times // 60 , times % 60)    hour = 0  if minute > 60:   hour , minute = (minute // 60 , minute % 60)    day=0  if hour>24:    day,hour=(hour//24,hour%24)      sec.set(second)  mins.set(minute)  hrs.set(hour)  days.set(day)  root.update()  time.sleep(1)  times -= 1Button(root, text="START", bd ="5", command = countdown, bg = "antique white", font = "arial 10 bold").place(x=150, y=210)  root.mainloop()

四、运行

打开工程文件，在地址栏里输入cmd，按Enter回车，即打开控制台。

 输入python main.py，按回车就打开了程序GUI界面。

 到达时间填2021年10月1日，按start按钮，就开始放假倒计时啦！

 相关资源：基于python的假期倒计时（天、时、分、秒）.zip