如何在Python中使用pygame的mouse鼠标事件？

'''
pygame.mouse.get_pressed - get the state of the mouse buttons get the state of the mouse buttons
pygame.mouse.get_pos - get the mouse cursor position get the mouse cursor position
pygame.mouse.get_rel - get the amount of mouse movement get the amount of mouse movement
pygame.mouse.set_pos - set the mouse cursor position set the mouse cursor position
pygame.mouse.set_visible - hide or show the mouse cursor hide or show the mouse cursor
pygame.mouse.get_focused - check if the display is receiving mouse input check if the display is receiving mouse input
pygame.mouse.set_cursor - set the image for the system mouse cursor set the image for the system mouse cursor
pygame.mouse.get_cursor - get the image for the system mouse cursor get the image for the system mouse cursor
'''

#pygame mouse
import os, pygame
from pygame.locals import *
from sys import exit
from random import *
__author__ = {'name' : 'Hongten',
    'mail' : 'hongtenzone@foxmail.com',
    'Version' : '1.0'}
if not pygame.font:print('Warning, Can not found font!')
pygame.init()
screen = pygame.display.set_mode((255, 255), 0, 32)
screen.fill((255,255,255))
font = pygame.font.Font('data\\font\\TORK____.ttf', 20)
text = font.render('Cliked Me please!!!', True, (34, 252, 43))
mouse_x, mouse_y = 0, 0
while 1:
 for event in pygame.event.get():
  if event.type == QUIT:
   exit()
  elif event.type == MOUSEBUTTONDOWN:
   pressed_array = pygame.mouse.get_pressed()
   for index in range(len(pressed_array)):
    if pressed_array[index]:
     if index == 0:
      print('Pressed LEFT Button!')
     elif index == 1:
      print('The mouse wheel Pressed!')
     elif index == 2:
      print('Pressed RIGHT Button!')
  elif event.type == MOUSEMOTION:
   #return the X and Y position of the mouse cursor
   pos = pygame.mouse.get_pos()
   mouse_x = pos[0]
   mouse_y = pos[1]
 screen.fill((mouse_x, mouse_y, 0))  
 screen.blit(text, (40, 100))
 pygame.display.update()