第一个pygame程序

import pygameimport sysfrom pygame.locals import *white = 255, 255, 255blue = 0, 0, 255pygame.init()screen = pygame.display.set_mode((600, 500))myfont = pygame.font.Font(None, 60)textImage = myfont.render("Hello Pygame", True, white)while True:    for event in pygame.event.get():        if event.type in (QUIT, KEYDOWN):            sys.exit()    screen.fill(blue)    screen.blit(textImage, (100, 100))    pygame.display.update()