I have a method like so
def update_count(target, value, initiator):
target.count = len(target.collection)
However, I have three decorator functions I wish to apply it to
@event.listens_for(MyClass.collection, 'append')
@event.listens_for(MyClass.collection, 'remove')
@event.listens_for(MyClass.collection, 'set')
Instead of copying the whole method below each decorator, what is a pythonic way to pass update_count to each of the event.listens_for decorator methods as a reference?
Simplest:
@event.listens_for(MyClass.collection, 'append')
@event.listens_for(MyClass.collection, 'remove')
@event.listens_for(MyClass.collection, 'set')
def update_count(target, value, initiator):
target.count = len(target.collection)
i.e, just put the decorators one after the other before def.
Of course, this may cause overhead, e.g if each decorator wraps the decorated function into another -- but if you can't fix the decorator, then you can't avoid that overhead. If you can change the decorator, then a listen_multi variant thereof, that takes all events being listened for in a single gulp, might no doubt offer much better performance.
