gistfile1.py

from collections import defaultdict
class Manager(object):
    def __init__(self):
        self.triggers = defaultdict(list) # event: [func, ]
        
    def register(self, *events):
        def register_for_event(func):
            for event in events:
                self.triggers[event.lower()].append(func)
            return func
        
        return register_for_event
    
    def trigger_event(self, event, *args):
        for trig in self.triggers[event.lower()]:
            trig(*args)

manager = Manager()

class MyClass(object):
    def __init__(self):
        self.text = "Testing"
    
    @manager.register("TEST")    
    def test(self, something):
        print self.text, something
        
klass = MyClass()
manager.trigger_event("TEST", "1 2 and 3")