Help - pygame facebook - M. Otsmane - complete

import pygame
pygame.init()
screen = pygame.display.set_mode((1080,720))

background = pygame.image.load('assets/bg.jpg').convert()

class Player(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.health = 100
        self.maxhealt = 100
        self.attack = 8
        self.velocity = 5
        self.image = pygame.image.load('assets/player.png').convert_alpha()
        self.rect = self.image.get_rect()
        self.rect.x = 400
        self.rect.y = 500

    def move_right(self):
        self.rect.x += self.velocity

    def move_left(self):
        self.rect.x -= self.velocity

    def update(self):
        # for future use. Here you can add automatic movement / animation / collision detection......
        pass

# ---- PLAYER CLASS DONE -------

player = Player() #Creating a playerobject



while running:
    screen.blit(background,(0,-200))

    player.update() #for future use, for instance animation
    player.draw()

    pressed = pygame.key.get_pressed()

    if pressed[pygame.K_LEFT]:
        game.player.move_left()
    if pressed[pygame.K_RIGHT]:
        game.player.move_right()

    pygame.display.flip()


   for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
            pygame.quit()