#finalPyPong.pyimport pygame,sysclass MyBallClass(pygame.sprite.Sprite):    def __init__(self,image_file,speed,location=[0,0]):        pygame.sprite.Sprite.__init__(self)        self.image = pygame.image.load(image_file)        self.rect = self.image.get_rect()        self.rect.left,self.rect.top = location        self.speed = speed    def move(self):        global points,score_text        self.rect = self.rect.move(self.speed)        if self.rect.left < 0 or self.rect.right > screen.get_width():            self.speed[0] = -self.speed[0]            if self.rect.top < screen.get_height():                hit_wall.play()        if self.rect.top <=0 :            self.speed[1] = -self.speed[1]            points = points + 1            score_text = font.render(str(points),1,(0,0,0))            get_point.play()class MyPaddleClass(pygame.sprite.Sprite):    def __init__(self,location=[0,0]):        pygame.sprite.Sprite.__init__(self)        image_surface = pygame.surface.Surface([100,20])        image_surface.fill([0,0,0])        self.image = image_surface.convert()        self.rect = self.image.get_rect()        self.rect.left,self.rect.top = locationpygame.init()pygame.mixer.init()pygame.mixer.music.load("bg_music.mp3")pygame.mixer.music.set_volume(0.3)pygame.mixer.music.play(-1)hit = pygame.mixer.Sound("hit_paddle.wav")hit.set_volume(0.4)new_life = pygame.mixer.Sound("new_life.wav")new_life.set_volume(0.5)splat = pygame.mixer.Sound("splat.wav")splat.set_volume(0.6)hit_wall = pygame.mixer.Sound("hit_wall.wav")hit_wall.set_volume(0.4)get_point = pygame.mixer.Sound("get_point.wav")get_point.set_volume(0.2)bye = pygame.mixer.Sound("game_over.wav")bye.set_volume(0.6)screen = pygame.display.set_mode([640,480])clock = pygame.time.Clock()myBall = MyBallClass("wackyball.bmp",[12,6],[50,50])ballGroup = pygame.sprite.Group(myBall)paddle = MyPaddleClass([270,400])lives = 3points = 0font = pygame.font.Font(None,50)score_text = font.render(str(points),1,(0,0,0))textpos = [10,10]done = Falsewhile 1:    clock.tick(30)    screen.fill([255,255,255])    for event in pygame.event.get():        if event.type == pygame.QUIT:            sys.exit()        elif event.type == pygame.MOUSEMOTION:            paddle.rect.centerx = event.pos[0]    if pygame.sprite.spritecollide(paddle,ballGroup,False):        hit.play()        myBall.speed[1] = -myBall.speed[1]    myBall.move()    if not done:        screen.blit(myBall.image,myBall.rect)        screen.blit(paddle.image,paddle.rect)        screen.blit(score_text,textpos)        for i in range(lives):            width = screen.get_width()            screen.blit(myBall.image,[width-40*i,20])        pygame.display.flip()    if myBall.rect.top >= screen.get_rect().bottom:        if not done:            splat.play()        lives = lives - 1        if lives <= 0:            if not done:                pygame.time.delay(1000)                bye.play()            final_text1 = "Game Over"            final_text2 = "Your final socre is: " + str(points)            ft1_font = pygame.font.Font(None,70)            ft1_surf = font.render(final_text1,1,(0,0,0))            ft2_font = pygame.font.Font(None,50)            ft2_surf = font.render(final_text2,1,(0,0,0))            screen.blit(ft1_surf,[screen.get_width()/2 - ft1_surf.get_width()/2,100])            screen.blit(ft2_surf,[screen.get_width()/2 - ft2_surf.get_width()/2,200])            pygame.display.flip()            done = True            pygame.mixer.music.fadeout(2000)        else:            pygame.time.delay(1000)            new_life.play()            myBall.rect.topleft = [50,50]            screen.blit(myBall.image,myBall.rect)            pygame.display.flip()            pygame.time.delay(1000)