import win32api,win32gui,win32confrom pynput.keyboard import Listener

def clickLeftCur():
    win32api.mouse_event(win32con.MOUSEEVENTF_LEFTDOWN|win32con.MOUSEEVENTF_LEFTUP, 0, 0)

def press(key):
      if(key.char=='2'):
          n=0
          while n<500:
              clickLeftCur()
              n+=1

with Listener(on_press = press) as listener:
　　 listener.join()