近期学习python，遇到了这个难题，请各路大神帮我解答一下？

运行的时候出现这个问题：

相关代码如下：
alien__invasion.py

settings.py

ship.py

game__functions.py

import sys

import pygame

from bullet import Bullet

def check_keydown_events(event,ai_settings,screen,ship,bullets):
#响应按键
if event.key == pygame.K_RIGHT:
ship.moving_right = True
elif event.key == pygame.K_LEFT:
ship.moving_left = True
elif event.key == pygame.K_SPACE:
fire_bullet(ai_settings,screen,ship,bullets)

def check_keyup_events(event,ship):
#响应松开
if event.key == pygame.K_RIGHT:
ship.moving_right = False
elif event.key == pygame.K_LEFT:
ship.moving_left = False

def check_events(event,ai_settings,screen,ship,bullets):
#响应按键和鼠标操作
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()

        elif event.type == pygame.KEYDOWN:
            check_keydown_events(event,ai_settings,screen,ship,bullets)

        elif event.type == pygame.KEYUP:
            check_keyup_events(event,ship)

        elif event.key == pygame.K_q:
            sys.exit()

def update_screen(ai_settings,screen,ship,alien,bullets):
#更新屏幕上的图像
#每次循环时都重绘屏幕
screen.fill(ai_settings.bg_color)
for bullet in bullets:
bullet.draw_bullet()
ship.blitme()
alien.blitme()

    #让最近绘制的屏幕可见
    pygame.display.flip()

def update_bullets(bullets):
#更新子弹的位置
bullets.update()
#删除已消失的子弹
for bullet in bullets.copy():
if bullet.rect.bottom <= 0:
bullets.remove(bullet)

def fire_bullet(ai_settings,screen,ship,bullets):
#创建一颗子弹，并将其加入到编组bullet中
if len(bullets) < ai_settings.bullets_allowed:
new_bullet = Bullet(ai_settings,screen,ship)
bullets.add(new_bullet)

bullets.py

alien.py

异常显示你使用的 get_events 的方法少了一个参数，建议去找找相关 API 的调用过程修正一下参数。