python实时得到鼠标的位置

#先下载pyautogui库，pip install pyautoguiimport os,timeimport pyautogui as pagtry:    while True:            print "Press Ctrl-C to end"            x,y = pag.position() #返回鼠标的坐标            posStr="Position:"+str(x).rjust(4)+','+str(y).rjust(4)            print posStr#打印坐标            time.sleep(0.2)            os.system('cls')#清楚屏幕except  KeyboardInterrupt:    print 'end....'