How do I keep spawning the bullet while the game is running? PYGAME

Question

I want to make a Flappy Bird clone in python. However, I don't know how to keep spawning the bullet without pausing the game.

here my code:

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            exit(0)
            
    pygame.time.delay(16)
    keys = pygame.key.get_pressed()
    dy += grv
    bird.y += dy

    if keys[pygame.K_SPACE] == False:
        canFlap = True
    
    if keys[pygame.K_SPACE] & canFlap:
        dy = -7
        canFlap = False
    
    win.fill((200,200,200))
    bird.draw(win)
    update()