Observer pattern thoughts

[Thomas Heller]

george young <gry at ll.mit.edu> writes:

> I'm using an observer pattern as part of a
> model-view-presenter/controller GUI app.  I had simply grabbed
> someone's source file with observer/observable classes and crunched
> along, inheriting from these classes and using register, notify, etc.
> But it seems to me that the classic Observable (adapted from type-anal
> C++):

[...]

> is unnecessarily restrictive and inflexible for python code.

Patrick O'Brian (sp?) has a nice recipe in the ActiveState Python
cookbook called dispatcher.py, which I'm using with great success.
Newer sources are maintained as part of PyCrust, which is now part of
wxPython.

Thomas