Python用Tkinter的Frame实现眼睛护士的倒计时黑色屏幕

import Tkinter,time

class MyFrame(Tkinter.Frame):

    def __init__(self):

        Tkinter.Frame.__init__(self)

        self.grid()

        self.canvas = Tkinter.Canvas(self, bg='black',width=self.winfo_screenwidth(),height=self.winfo_screenheight())

        self.canvas.pack()

        self.top = self.winfo_toplevel()

#       self.top.update_idletasks()

        self.top.overrideredirect(True)

        self.exitButton=Tkinter.Button(self,text='Exit',command=self.doExit)

        self.exitButton.pack()

        self.Label1=Tkinter.Label(self,text='Hello')

        self.Label1.pack()

        self.exitButton.config()

#       self.pack(fill='both')

        self.trickit()

        app.mainloop()

    def doExit(self):

        pather=self.winfo_parent()

        pather.quit()

        self.quit()

    def trickit(self,num):

        for j in range(num,,-):

            self.Label1["text"]=j

            self.update()

            time.sleep()

        self.doExit()

import Tkinter,sys,time

class BeBig():

    root=Tkinter.Tk()

    Label1=Tkinter.Label(root,text=time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time())))

    def beBig(self):

        self.root.minsize(self.root.winfo_screenwidth(), self.root.winfo_screenheight())

        #self.root.geometry('300x200-100-100')

        self.root.config(bg='black')

        self.Label1.pack()

        topTitle=self.root.winfo_toplevel()

        topTitle.overrideredirect(True)

        self.trickit()

        self.root.mainloop()

    def trickit(self,num):

        for j in range(num,,-):

            self.Label1["text"]=j

            self.root.update()

            time.sleep()

        self.root.destroy()

beBig=BeBig()

beBig.beBig()