这是一个pygame解决方案。只需将随机字母和颜色传递给Font.render，然后将返回的表面变白。为了使它居中，我调用了曲面的get_rect方法并将参数txt的中心screen_rect作为center参数传递。请注意，您不能为每个字母选择不同的颜色。为此，您可能必须渲染几个“一个字母”的曲面，然后将它们组合起来。
-文本变化非常快（每帧（30 fps）），我不确定是否会引起癫痫发作，因此我添加了一个计时器，每10帧才更新一次文本。如果要提高更新速度，请小心。
import sys
from random import choice, randrange
from string import ascii_letters
import pygame as pg
def random_letters(n):
"""Pick n random letters."""
return ''.join(choice(ascii_letters) for _ in range(n))
def main():
info = pg.display.Info()
screen = pg.display.set_mode((info.current_w, info.current_h), pg.FULLSCREEN)
screen_rect = screen.get_rect()
font = pg.font.Font(None, 45)
clock = pg.time.Clock()
color = (randrange(256), randrange(256), randrange(256))
txt = font.render(random_letters(randrange(5, 21)), True, color)
timer = 10
done = False
while not done:
for event in pg.event.get():
if event.type == pg.KEYDOWN:
if event.key == pg.K_ESCAPE:
done = True
timer -= 1
# Update the text surface and color every 10 frames.
if timer <= 0:
timer = 10
color = (randrange(256), randrange(256), randrange(256))
txt = font.render(random_letters(randrange(5, 21)), True, color)
screen.fill((30, 30, 30))
screen.blit(txt, txt.get_rect(center=screen_rect.center))
pg.display.flip()
clock.tick(30)
if __name__ == '__main__':
pg.init()
main()
pg.quit()
sys.exit()
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