text: import pygame
  from pygame.sprite import Sprite
  
  class Alien(Sprite):
  
      def __init__(self, ai_game):
          super().__init__()
          self.screen=ai_game.screen
          self.settings=ai_game.settings
  
          self.image=pygame.image.load('images/pngaaa.com-476369.bmp')
          self.rect=self.image.get_rect()
  
          self.rect.x=self.rect.width
          self.rect.y=self.rect.height
  
          self.x=float(self.rect.x)
      
      def update(self):
          #self.x+=self.settings.alien_speed
          self.x+=(self.settings.alien_speed * self.settings.fleet_direction)
          self.rect.x=self.x
      
      def check_edges(self):
          screen_rect=self.screen.get_rect()
          if self.rect.right >= screen_rect.right or self.rect.left <=0:
              return True
          
  