Load external font and does not show font in the window

[ATARI_LIVE]

Ummm... I was trying for clock here the code:

import pyglet
from pyglet import clock
from time import strftime

pyglet.font.add_file('/home/pi/.fonts/digital-7.ttf')
window = pyglet.window.Window()
window.set_fullscreen(False)

while True:
    time_now=strftime('%H:%M:%S %P')
    label = pyglet.text.Label(time_now,
                            font_name='Digital-7',
                            font_size=300,
                            x=window.width//2, y=window.height//2,
                            anchor_x='center', anchor_y='center')

@window.event
def on_draw():
    window.clear()
    label.draw()

pyglet.app.run()

Can do that?