Код цикла фор

for i in events:
        if i.type == pygame.KEYDOWN:
            if i.key == pygame.K_LEFT:
                lr = "LEFT"
            elif i.key == pygame.K_RIGHT:
                lr = "RIGHT"
        if i.type == pygame.KEYUP:
            if i.key == pygame.K_RIGHT and lr == 'RIGHT':
                lr = "STOP"
            elif i.key == pygame.K_LEFT and lr == 'LEFT':
                lr = "STOP"

if lr == "LEFT":
    х -= 3
elif lr == "RIGHT":
    х += 3