当我尝试从属性调用方法时出现此错误：
_vm.url不是函数
当我尝试调用函数时
import pygame as pg
pg.init()
screen = pg.display.set_mode((640, 480))
clock = pg.time.Clock()
FONT = pg.font.Font(None, 40)
BLUE = pg.Color('dodgerblue1')
class Score(pg.sprite.Sprite):
def __init__(self, pos):
super(Score, self).__init__()
self.lives = 3
self.score = 0
self.rect = pg.Rect(pos, (1, 1))
self.update_image()
def update_image(self):
height = FONT.get_height()
# Put the rendered text surfaces into this list.
text_surfaces = []
for txt in ('lives {}'.format(self.lives),
'score {}'.format(self.score)):
text_surfaces.append(FONT.render(txt, True, BLUE))
# The width of the widest surface.
width = max(txt_surf.get_width() for txt_surf in text_surfaces)
# A transparent surface onto which we blit the text surfaces.
self.image = pg.Surface((width, height*2), pg.SRCALPHA)
for y, txt_surf in enumerate(text_surfaces):
self.image.blit(txt_surf, (0, y*height))
# Get a new rect (if you maybe want to make the text clickable).
self.rect = self.image.get_rect(topleft=self.rect.topleft)
def main():
score = Score((100, 100))
all_sprites = pg.sprite.Group(score)
done = False
while not done:
for event in pg.event.get():
if event.type == pg.QUIT:
done = True
elif event.type == pg.KEYDOWN:
if event.key == pg.K_s:
# Increment the score and update the image.
# It would be nicer to turn the score into a
# property and update the image automatically.
score.score += 1
score.update_image()
all_sprites.update()
screen.fill((30, 30, 30))
all_sprites.draw(screen)
pg.display.flip()
clock.tick(30)
if __name__ == '__main__':
main()
pg.quit()
<a :href="url(item)" class="link">
{{ item.label }}
</a>
我做错了什么？