context configure and clock schedule

 #-*- coding:gbk -*-
import pyglet

platform=pyglet.window.get_platform()
display=platform.get_default_display()
screen=display.get_default_screen()

template=pyglet.gl.Config(alpha_size=8)
config=screen.get_best_config(template)
context=config.create_context(None)
window=pyglet.window.Window(context=context)

image=pyglet.image.load(‘splash.png‘)
sprite=pyglet.sprite.Sprite(image)
sprite.dx=10.0

@window.event
def on_draw():
    """
    draw the window and widget
    """
    window.clear()
    sprite.draw()

def update(dt):
    """
    update  every 1/60.0 seconds
    """
    sprite.y+=sprite.dx*dt
    sprite.x+=sprite.dx*dt
pyglet.clock.schedule_interval(update,1/60.0)

pyglet.app.run()