import pygame import sys # Some constants that we use in the program BACKGROUND_COLOR = (255, 255, 255) SCREEN_SIZE = (500, 500) # Screen size is 500 x 500 # Start pygame pygame.init() window = pygame.display.set_mode(SCREEN_SIZE) pygame.display.set_caption("Hello world") # The main loop will run until the QUIT event is triggered # this event will be triggered by closing the window while True: for event in pygame.event.get(): if event.type == pygame.QUIT: pygame.quit() sys.exit() # Fill the screen with the background color and update the screen window.fill(BACKGROUND_COLOR) pygame.display.flip()