python实现倒计时小工具

#!/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()

# 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()