python实现的简单窗口倒计时界面实例

本文实例讲述了python实现的简单窗口倒计时界面。分享给大家供大家参考。具体分析如下：

下面的代码通过Tkinter制作windows窗口界面，然后时间了一个简单的倒计时功能，代码可以直接运行

    # Countdown using Tkinter 
    from Tkinter import *
    import time
    import tkMessageBox
    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="Start",command=self.start)
      self.hi_there.pack(side=LEFT)
      self.button = Button(frame,text="QUIT",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):
       lbl1["text"] = k
       root.update()
       time.sleep(1)
      lbl1.config(bg='red')
      lbl1.config(fg='white')
      lbl1["text"] = "Time up!"
      tkMessageBox.showinfo("Time up!","Time up!")
     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()

希望本文所述对大家的Python程序设计有所帮助。