evee
Summary
This is a port for Python v3.6+ of the Symfony Event Dispatcher.
This event dispatcher follows a pattern called the "Mediator" pattern.
In software engineering, the mediator pattern defines an object that encapsulates how a set of objects interact. This pattern is considered to be a behavioral pattern due to the way it can alter the program's running behavior.
Install
pip install evee
Usage
Dispatching simple events
from evee import EventDispatcher
from evee import Event
def pre_foo(self, event: Event, event_name: str):
print("pre_foo was called")
def post_foo(self, event: Event, event_name: str):
print("post_foo was called")
dispatcher = EventDispatcher()
dispatcher.add_listener('pre.foo', pre_foo)
dispatcher.add_listener('post.foo', post_foo)
dispatcher.dispatch('pre.foo')
print('Doo Foo work')
dispatcher.dispatch('post.foo')
