>>> import pyglet
>>> window = pyglet.window.Window()
Traceback (most recent call last):
  File "<pyshell#1>", line 1, in <module>
    window = pyglet.window.Window()
  File "C:\Python33\lib\site-packages\pyglet\window\win32\__init__.py", line 131, in __init__
    super(Win32Window, self).__init__(*args, **kwargs)
  File "C:\Python33\lib\site-packages\pyglet\window\__init__.py", line 504, in __init__
    config = screen.get_best_config(template_config)
  File "C:\Python33\lib\site-packages\pyglet\canvas\base.py", line 147, in get_best_config
    configs = self.get_matching_configs(template)
  File "C:\Python33\lib\site-packages\pyglet\canvas\win32.py", line 33, in get_matching_configs
    configs = template.match(canvas)
  File "C:\Python33\lib\site-packages\pyglet\gl\win32.py", line 25, in match
    return self._get_arb_pixel_format_matching_configs(canvas)
  File "C:\Python33\lib\site-packages\pyglet\gl\win32.py", line 98, in _get_arb_pixel_format_matching_configs
    nformats, pformats, nformats)
  File "C:\Python33\lib\site-packages\pyglet\gl\lib_wgl.py", line 95, in __call__
    result = self.func(*args, **kwargs)
  File "C:\Python33\lib\site-packages\pyglet\gl\lib.py", line 63, in MissingFunction
    raise MissingFunctionException(name, requires, suggestions)
pyglet.gl.lib.MissingFunctionException: wglChoosePixelFormatARB is not exported by the available OpenGL driver.  ARB_pixel_format is required for this functionality.