EventDispatcher Component

EventDispatcher implements a lightweight version of the Observer design pattern.

from pymfony.component.event_dispatcher import EventDispatcher;
from pymfony.component.event_dispatcher import Event;

dispatcher = EventDispatcher();

def func(event):
    assert isinstance(event, Event);

    # ...

dispatcher.addListener('event_name', func);

dispatcher.dispatch('event_name');

Resources

You can run the unit tests with the following command:

$ cd path/to/pymfony/component/yaml/
$ curl -O https://raw.github.com/pypa/virtualenv/master/virtualenv.py
$ python virtualenv.py vendor
$ vendor/bin/pip install -r requirements.txt -e . nose
$ vendor/bin/nosetests