本文实例为大家分享了python实现倒计时小工具的具体代码，供大家参考，具体内容如下

#!/usr/bin/env python# coding=utf-8 import threadingimport timeimport Queuefrom Tkinter import *import tkMessageBoximport logginglogging.basicConfig(level=logging.INFO) ## Communication queuecommQueue = Queue.Queue()g_time = 0 ## Function run in threaddef timeThread(): global g_time g_time = timeVar.get() * 60 while 1: logging.info("线程放入队列:%d".decode("utf-8") % g_time) commQueue.put(g_time) try: root.event_generate('<<TimeChanged>>', when='tail') except TclError: break time.sleep(1) g_time -= 1 if g_time==-1: begin_btn["fg"] = "black" clockVar.set("开始计时") break def timeChanged(event): x = commQueue.get() logging.info("获取队列:%d".decode("utf-8") % x) minits = x//60 seconds = x%60 s = "剩余时间 {:02}:{:02}".format(minits, seconds) begin_btn["fg"] = "blue" clockVar.set(s) if x==0: tkMessageBox.showinfo("提醒","时间已到") def clock_func(*args): global g_time if threading.activeCount()>1: g_time = timeVar.get() * 60 else: th=threading.Thread(target=timeThread) th.start() ## Create main windowroot = Tk()root.title("计时工具")root.geometry("180x95-0-45")root.resizable(width=FALSE,height=FALSE)root.wm_attributes("-topmost",1)frame = Frame(root)frame.pack()Label(frame,text="设定时间间隔").grid(row=1,column=2)timeVar = IntVar()clockVar = StringVar()time_entry = Entry(frame, textvariable=timeVar, width=8)time_entry["justify"] = "center"time_entry.grid(row=2,column=2,sticky="W,E")begin_btn = Button(frame,textvariable=clockVar,command=clock_func)begin_btn.grid(row=3,column=2)timeVar.set(8)begin_btn["fg"] = "black"clockVar.set("开始计时") for child in frame.winfo_children(): child.grid_configure(pady=3) time_entry.focus()root.bind('<<TimeChanged>>', timeChanged)root.bind("<Return>",clock_func)root.mainloop()

小编再为大家分享一段代码：Python窗口倒计时

# Countdown using Tkinter from tkinter import *import timeimport tkinter.messagebox class App: def __init__(self,master): frame = Frame(master) frame.pack() self.entryWidget = Entry(frame) self.entryWidget["width"] = 15 self.entryWidget.pack(side=LEFT) self.hi_there = Button(frame, text="开始", command=self.start) self.hi_there.pack(side=LEFT) self.button = Button(frame, text="退出", fg="red", command=frame.quit) self.button.pack(side=LEFT) def start(self): text = self.entryWidget.get().strip() if text != "": num = int(text) self.countDown(num) def countDown(self,seconds): lbl1.config(bg='yellow') lbl1.config(height=3, font=('times', 20, 'bold')) for k in range(seconds, 0, -1): if k == 30: print("\a") if k== 29: print("\a") if k== 28: print("\a") lbl1["text"] = k root.update() time.sleep(1) lbl1.config(bg='red') lbl1.config(fg='white') lbl1["text"] = "时间到！" tkMessageBox.showinfo("时间到！","时间到！") def GetSource(): get_window = Tkinter.Toplevel(root) get_window.title('Source File?') Tkinter.Entry(get_window, width=30, textvariable=source).pack() Tkinter.Button(get_window, text="Change", command=lambda: update_specs()).pack() root = Tk()root.title("Countdown")lbl1 = Label()lbl1.pack(fill=BOTH, expand=1)app = App(root)root.mainloop()

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。