Sample for event.py (improved) http://emptypage.jp/notes/pyevent.en.html

event_sample_2.py

#!/usr/bin/env python
"""Sample script which uses event.py (improved). """


import event


class Publisher(object):
    
    # Set event object in class declaration.
    evt_foo = event.Event('here comes foo')
    
    def foo(self):
        # Do some actions and fire event.
        self.evt_foo()


# Event handler may be a function or a instance method etc.
# Every handler must accept two arguments; a sender and an event-specific 
# parameter.
def handle_foo(sender, earg):
    print 'foo!'


if __name__ == '__main__':
    
    pub = Publisher()
    # Add event handler
    pub.evt_foo += handle_foo
    # This will cause Publiser.evt_foo event.
    pub.foo()