Observer implementations

[Mike C. Fletcher]

Tobias Weber wrote:
...
> No time to reinvent the wheel
>
> I'd still need to know how to weakref a classmethod
>   
See PyDispatcher for code to do this.

PyDispatcher, at least, is not abandoned, it would be more accurate to 
say "finished".  I use it in OpenGLContext (extensively), but I haven't 
had to change anything in a rather long time.  It pretty much just works.

Enjoy,
Mike

-- 
________________________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://www.vrplumber.com
  http://blog.vrplumber.com