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今天用python的tkinter模块写了个小时钟，界面很简单，而且是单线程的，拖动窗口时时间不能刷新（以后改进吧）。

运行环境：Python2

from Tkinter import *import timeimport mathimport threaddef drawclock(canvas):    x = 200    y = 200    width = 150 + 10    for i in range(0,12):        arc = 2.0 * math.pi / 12 * i        new_x = x + width * math.sin(arc)        new_y = y - width * math.cos(arc)        canvas.create_text(new_x,new_y,text = str(i))def drawpointer(canvas,hour,minute,second):    x = 200    y = 200    hour_width = 70    minute_width = 90    second_width = 120    hour_arc = 2.0 * math.pi * hour / 12    minute_arc = 2.0 * math.pi * minute / 60    second_arc = 2.0 * math.pi * second / 60    canvas.create_line(x,y,x+hour_width * math.sin(hour_arc),y-hour_width*math.cos(hour_arc))    canvas.create_line(x,y,x+minute_width*math.sin(minute_arc),y - minute_width*math.cos(minute_arc))    canvas.create_line(x,y,x+second_width*math.sin(second_arc),y - second_width*math.cos(second_arc))def showtime(app,canvas):    while 1:        mytime = ''        localtime = time.localtime()        # hour        hour = localtime[3]        # minute        minute = localtime[4]        # second        second = localtime[5]        mytime = str(hour) + ':' + str(minute) + ':' + str(second)        #print mytime        canvas.create_rectangle(0,0,400,400,fill='white')        canvas.create_oval(50,50,350,350)        canvas.create_text(200,380,text=str(mytime),fill='red')        drawclock(canvas)        drawpointer(canvas,hour,minute,second)        app.update()        time.sleep(1)def main():    app = Tk()    #set the size of the window    app.wm_maxsize(400,400)    app.wm_minsize(400,400)    app.wm_title('Python Clock')    canvas = Canvas(app,width=400,height=400)    canvas.pack()    thread.start_new_thread(showtime,(app,canvas))    app.mainloop()if __name__ == "__main__":        main()

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