pySwastik

import pygame

# skeleton demonstration script for maintaining and displaying a count of active lives

pygame.init()
clock = pygame.time.Clock()
FPS = 60

surface = pygame.display.set_mode((500, 500))

ctr_lives = 3           # start with 3 lives
nextime = 10            # First addition of a life will be after 10 seconds
while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
        if event.type == pygame.KEYDOWN:        # Down Arrow pressed?
            if ctr_lives:                       # If we have any lives ...
                ctr_lives -= 1                  # ... Lose 1 life
    surface.fill((110, 0, 220))
    xpos = 10                                   # x position for life-blob #1
    for _ in range(ctr_lives):                  # Draw a blob for each life we currently have
        heart = pygame.Rect(xpos, 30, 20, 20)
        pygame.draw.rect(surface, 'red', heart)
        xpos += 29                              # compute x position for next life-blob
    time = int(pygame.time.get_ticks() / 1000)
    if time == nextime:         # Is it time to add a life?
        ctr_lives += 1          # - yes
        nextime += 10           # - compute time for next life addition

    clock.tick(FPS)
    pygame.display.update()