xxxxxxxxxx
running = True
while running:
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
if running == False:
pygame.quit()
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import ., sys #import sys
while .: #your loop
for event in pygame.event.get(): #user exit programm
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()