[PyGame] Terrible Sprite controls, need help.

[michael1789]

I'm running the event loop you posted.

while run:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False
 
    delta = clock.tick(60)
    keys = pygame.key.get_pressed()
    window.fill(pygame.Color('black'))
    ship.update(keys, delta)
 
    pygame.display.flip()